Window type fresh air ventilator and exhaust module thereof

Abstract

The utility model provides a window type fresh air ventilator and an exhaust module thereof, and the exhaust module of the window type fresh air ventilator comprises a side shell, two end seals, an exhaust fan and an air valve assembly, the shell extends in the preset direction, and ports are formed in the two ends, in the preset direction, of the shell. The two end seals are arranged at the two ends, in the preset direction, of the shell correspondingly, and the shell and the end seals form an exhaust cavity in a surrounding mode. The side shell of the exhaust module of the window type fresh air ventilator can be manufactured by adopting an extrusion forming process, the length of the side shell is cut according to the number of actual internal fans or actual installation environment requirements, and then the two ends of the side shell are sealed through the end seals, so that the whole shell of the exhaust module is simpler and more flexible to form, the application range is wider, and the service life of the exhaust module is prolonged. The cost can be well saved; the air valve assembly is simple in structure and convenient to open and close; and the electric connector on the end seal is convenient for the exhaust module to be directly butted with the electric connector of the window type fresh air ventilator when the exhaust module is mounted, so that the plug-and-play function can be realized, the wiring trouble is reduced, and the installation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, specifically to a window-type fresh air unit and its exhaust module. Background Technology

[0002] With the development of the domestic economy, the concept of fresh air has become deeply rooted in people's hearts, and more and more residents have the need to install fresh air systems. However, the proportion of existing houses equipped with fresh air systems was not high in the past. Traditional fresh air units, due to their construction difficulty and construction cost, greatly limited the development of the fresh air industry. In addition, combined with the current situation of domestic real estate development, fewer and fewer new buildings are being built, and the future market will be one of improving existing housing stock.

[0003] However, due to the diverse environments of old building renovations, the size needs to be adjusted according to the actual situation. Currently, the exhaust module of the window-type fresh air unit is usually formed by injection molding based on the on-site installation environment and the length or number of internal fans. Every time a fan is added or removed or the length of the fan is changed, the outer shell needs to be re-molded accordingly, which results in high R&D costs and low flexibility in matching the outer shell with the internal fans. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings and deficiencies in the existing technology and provide a window-type fresh air unit and its exhaust module.

[0005] One embodiment of this utility model provides an exhaust module for a window-type fresh air system, comprising:

[0006] A side shell, which extends along a predetermined direction, and has ports at both ends in the predetermined direction;

[0007] Two end seals are respectively disposed at both ends of the side shell in a predetermined direction and correspondingly close the port. At least one end seal is provided with a fastener for assembly with the body of the window-type fresh air unit. The side shell and the end seals surround to form an exhaust cavity, which has an air inlet and an air outlet.

[0008] One or more exhaust fans are provided, and the exhaust fans are disposed in the exhaust cavity. When there are multiple exhaust fans, the multiple exhaust fans are arranged sequentially along the preset direction.

[0009] A damper assembly is provided at the exhaust port for opening and closing the exhaust port.

[0010] In some alternative embodiments, the side shell includes a first shell and a second shell connected to each other, both of which extend in the preset direction. The port is formed between the first shell and the second shell, and two end caps are respectively connected to the two ends of the first shell in the preset direction and to the two ends of the second shell in the preset direction.

[0011] In some optional embodiments, the first housing is provided with locking grooves on both sides, and the second housing is provided with locking parts on both sides, the locking parts corresponding to and locking with the locking grooves.

[0012] In some optional embodiments, the side shell further includes a support partition extending along the preset direction. The support partition is disposed between the first shell and the second shell and is connected to the first shell and the second shell respectively. The support partition is located in the exhaust cavity and divides the exhaust cavity into a first air cavity and a second air cavity. The support partition is provided with a communication port connecting the first air cavity and the second air cavity. The exhaust fan is disposed in the second air cavity, and the air inlet of the exhaust fan is connected to the communication port.

[0013] In some alternative embodiments, a first support portion, a second support portion, and a mounting portion are formed on the support partition. The first support portion abuts against the first housing, and the second support portion abuts against the second housing. Both the first support portion and the second support portion extend along the preset direction, and the exhaust fan is mounted on the mounting portion.

[0014] In some optional embodiments, the first housing is provided with a plurality of first limiting grooves extending along the preset direction, and the side of the first support portion is limited and engaged with the first limiting grooves; and / or,

[0015] The second housing is provided with a plurality of second limiting grooves extending along the preset direction, and the side of the second support portion is limited and engaged with the second limiting grooves.

[0016] In some alternative embodiments, at least one of the fasteners or at least one of the end seals is provided with an electrical connector, which is electrically connected to the exhaust fan and the damper assembly, respectively.

[0017] In some optional embodiments, the exhaust chamber has multiple exhaust ports, which are arranged sequentially along the preset direction;

[0018] The damper assembly includes a damper plate and a damper drive module. The damper plate has multiple ventilation openings and is movably disposed within the exhaust chamber. The damper drive module is driven and connected to the damper plate. The damper plate can move relative to the exhaust opening to an open or closed position under the drive of the damper drive module. When the damper plate is in the open position, the exhaust opening communicates with the interior of the exhaust chamber through the ventilation openings. When the damper plate is in the closed position, the damper plate closes the exhaust opening.

[0019] In some optional embodiments, the exhaust cavity is provided with a sliding groove extending along the preset direction, and the air valve plate is slidably engaged with the sliding groove;

[0020] The air valve drive module includes an air valve drive motor and a crank. A connecting groove is provided on the air valve plate. The extension direction of the connecting groove is not parallel to the preset direction. The air valve drive motor is driven to one end of the crank, and the other end of the crank is rotatably connected to the connecting groove and can slide along the connecting groove.

[0021] Another embodiment of this utility model provides a window-type fresh air unit, including: an exhaust module of a window-type fresh air unit as described above.

[0022] Compared to existing technologies, the side shell of the exhaust module of the window-type fresh air unit of this utility model can be manufactured using an extrusion molding process. The length can be cut according to the actual number and length of the internal fans or the actual installation environment requirements. Then, the two ends of the side shell are sealed by end seals, making the overall shell of the exhaust module simpler and more flexible, with a wider range of applications and better cost savings. The air valve assembly has a simple structure and is easy to open and close. The electrical connector on the end seal allows the exhaust module to be directly connected to the electrical connector of the window-type fresh air unit during installation, enabling plug-and-play functionality, reducing wiring hassles, and facilitating installation.

[0023] To provide a clearer understanding of this invention, the specific embodiments of this invention will be described below in conjunction with the accompanying drawings. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the exhaust module of a window-type fresh air unit according to an embodiment of the present invention;

[0025] Figure 2 This is a cross-sectional view of the exhaust module of a window-type fresh air unit according to an embodiment of the present invention;

[0026] Figure 3 An exploded view of the exhaust module of a window-type fresh air unit according to an embodiment of the present invention;

[0027] Figure 4This is a schematic diagram of the side shell structure according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of a support partition according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of a damper assembly according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Side shell; 11. Port; 12. First shell; 121. Locking groove; 13. Second shell; 131. Locking part; 132. Second limiting groove; 14. Support partition; 141. First support part; 142. Second support part; 143. Mounting part; 144. Connecting port; 20. End seal; 21. Fixing component; 30. Exhaust fan; 40. Air valve assembly; 41. Air valve plate; 411. Ventilation port; 412. Connecting groove; 42. Air valve drive module; 43. Air valve drive motor; 44. Crank; 50. Exhaust chamber; 51. Air inlet; 52. Exhaust port; 53. First air chamber; 54. Second air chamber; 55. Slide groove. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. In the description of the present utility model, unless otherwise stated, "a plurality of" means two or more, and "a number" means one or more. In addition, unless otherwise stated, 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.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In the description of this utility model, references to terms such as "one embodiment," "some alternative implementations," or "some optional embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this 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.

[0036] Please see Figures 1 to 4 One embodiment of this utility model provides an exhaust module for a window-type fresh air unit, including: a side shell 10, two end seals 20, a plurality of exhaust fans 30 and a damper assembly 40;

[0037] The side shell 10 extends along a preset direction, and both ends of the side shell 10 in the preset direction are provided with ports 11;

[0038] Two end seals 20 are respectively disposed at both ends of the side shell 10 in a preset direction and corresponding to the closed port 11. At least one end seal 20 is provided with a fastener 21 for assembly with the body of the window-type fresh air unit. The side shell 10 and the end seals 20 surround to form an exhaust cavity 50. The exhaust cavity 50 has an air inlet 51 and an air outlet 52. In this embodiment, the air inlet 51 and the air outlet 52 are disposed on the side shell 10, and both end seals 20 are provided with fasteners 21.

[0039] Exhaust fans 30 are installed inside exhaust chambers 50. When there are multiple exhaust fans 30, they are arranged in a predetermined direction within the exhaust chambers 50, thus facilitating the arrangement of each exhaust fan 30 while meeting airflow requirements. The number of exhaust fans 30 and the length of different exhaust fans 30 will affect the required length of the side shell 10. Preferably, the exhaust fans 30 are cross-flow fans.

[0040] The air valve assembly 40 is located at the exhaust port 52 and is used to open and close the exhaust port 52. When the exhaust port 52 is closed, it can prevent external dust, insects and other pollutants from entering the exhaust chamber 50.

[0041] The side shell 10 can be manufactured using a profile extrusion process. The required length can be cut according to actual needs. The length cut does not affect the structure of the end of the side shell 10. Therefore, the end seal 20 can match side shells 10 of different lengths. Thus, there is no need to change the structure of the end seal 20 and perform multiple mold openings.

[0042] Similarly, since the fastener 21 is arranged on the end seal 20, it will not be affected by the length of the side shell 10 and will not need to change the structure, which is conducive to cost reduction.

[0043] The air inlet 51 is connected to the indoor environment, and the air outlet 52 is connected to the outdoor environment. When exhausting air, the exhaust fan 30 is started, and the airflow enters the exhaust chamber 50 from the air inlet 51 and then exits from the air outlet 52.

[0044] In some optional embodiments, the side shell 10 includes a first shell 12 and a second shell 13 connected to each other. Both the first shell 12 and the second shell 13 extend in a predetermined direction. A port 11 is formed between the first shell 12 and the second shell 13. Two end seals 20 are respectively connected to the two ends of the first shell 12 in the predetermined direction and to the two ends of the second shell 13 in the predetermined direction. Dividing the side shell 10 into two parts, the first shell 12 and the second shell 13, helps to reduce the molding difficulty and facilitates the extrusion molding of the first shell 12 and the second shell 13. Moreover, dividing it into two parts allows for the pre-installation of the structure to be installed into the exhaust cavity 50 before connecting the first shell 12 and the second shell 13. This is especially convenient when the side shell 10 is relatively long, making it easier to assemble the internal structure of the exhaust cavity 50.

[0045] In some optional embodiments, the first housing 12 is provided with locking grooves 121 on both sides, and the second housing 13 is provided with locking parts 131 on both sides. The locking parts 131 are locked and engaged with the locking grooves 121, thereby realizing the connection between the first housing 12 and the second housing 13. Of course, the connection method of the first housing 12 and the second housing 13 is not limited to this. Those skilled in the art can also choose other suitable connection methods based on the teachings of this utility model. For example, the first housing 12 and the second housing 13 can be connected by welding, adhesive bonding, thread locking, etc.

[0046] Please see Figure 2 , Figure 4 and Figure 5In some optional embodiments, the side shell 10 further includes a support partition 14 extending along a preset direction. The support partition 14 is disposed between the first shell 12 and the second shell 13 and is connected to the first shell 12 and the second shell 13 respectively. The support partition 14 can support between the first shell 12 and the second shell 13, thereby preventing the first shell 12 and the second shell 13 from bending and deforming. It also helps to simplify the structure of the first shell 12 and the second shell 13 and reduce the molding difficulty. The support partition 14 can also be manufactured by profile extrusion process. The first shell 12, the second shell 13 and the support partition 14 can all be cut to appropriate lengths according to actual needs. The supporting partition 14 is located inside the exhaust chamber 50, dividing the exhaust chamber 50 into a first air chamber 53 and a second air chamber 54. The supporting partition 14 has a connecting port 144 that connects the first air chamber 53 and the second air chamber 54. The exhaust fan 30 is located inside the second air chamber 54, with its air inlet connected to the connecting port 144. When the exhaust fan 30 is started, it drives the airflow in the first air chamber 53 to enter the second air chamber 54 through the connecting port 144, and then discharges it from the exhaust port 52. It should be noted that the supporting partition 14 can be extruded separately. Alternatively, the supporting partition 14 can be integrally formed with the first housing 12 or the second housing 13. Or, the supporting partition 14 can also be connected to the first housing 12 and / or the second housing 13 through welding, adhesive bonding, threaded fastening, or other methods.

[0047] In addition, the exhaust fan 30 has its outlet facing the exhaust port 52, and a sealing element extending in a preset direction is provided on the side of the exhaust fan 30 away from the connection port 144. The sealing element is located on the side of the exhaust fan 30 away from the connection port 144 and abuts against the inner wall of the second air chamber 54 to prevent the airflow from flowing back from the exhaust fan 30 to the inner wall of the second air chamber 54 away from the exhaust port 52 after being blown out from the exhaust fan 30.

[0048] In some optional embodiments, a first support portion 141, a second support portion 142, and a mounting portion 143 are formed on the support partition 14. The first support portion 141 abuts against the first housing 12, and the second support portion 142 abuts against the second housing 13. Both the first support portion 141 and the second support portion 142 extend along a preset direction. The first support portion 141 provides stable support on the first housing 12, preventing the first housing 12 from being recessed towards the exhaust cavity 50. The second support portion 142 provides stable support on the second housing 13, preventing the second housing 13 from being recessed towards the exhaust cavity 50. The exhaust fan 30 is mounted on the mounting portion 143, facilitating the installation of the exhaust fan 30. This allows the weight of the exhaust fan 30 to be distributed to the first housing 12 and the second housing 13 through the support partition 14, preventing the exhaust fan 30 from being directly mounted on the first housing 12 or the second housing 13, thus avoiding the first housing 12 or the second housing 13 bearing the load alone.

[0049] In some optional embodiments, the first housing 12 is provided with a plurality of first limiting grooves extending along a preset direction, and the side of the first support portion 141 is limited and engaged with the first limiting grooves, thereby limiting the position of the first support portion 141 and preventing the first support portion 141 from shifting; and / or, the second housing 13 is provided with a plurality of second limiting grooves 132 extending along a preset direction, and the side of the second support portion 142 is limited and engaged with the second limiting grooves 132, thereby limiting the position of the second support portion 142 and preventing the second support portion 142 from shifting. In this embodiment, the side of the second support portion 142 is limited and engaged with the second limiting grooves 132, and the first support portion 141 is connected to the first housing 12 by a threaded locking method. During installation, the support partition 14, the exhaust fan 30, the air valve assembly 40, and other structures are pre-assembled on the second housing 13, and then the first housing 12 and the second housing 13 are connected, thereby facilitating the assembly of the overall structure.

[0050] In some alternative embodiments, at least one fastener 21 or at least one end cap 20 is provided with an electrical connector (not shown). The electrical connector is electrically connected to the exhaust fan 30 and the damper assembly 40, respectively. When the exhaust module of the window-type fresh air unit is assembled onto the body of the window-type fresh air unit, the fastener 21 is fixed to the body of the window-type fresh air unit. The electrical connector is then plugged into the socket or plug of the window-type fresh air unit, so that the exhaust fan 30 and the damper assembly 40 are electrically connected to the body of the window-type fresh air unit. This reduces the hassle of wiring, achieves a plug-and-play effect, and is easy to install. In this embodiment, the electrical connector is mounted on the fixing member 21. Since the fixing member 21 is directly connected to the main body of the window-type fresh air unit, the structure near the fixing member 21 is the most stable, allowing the electrical connector to be inserted more stably. The electrical connector can be selected to be mounted on one side of the fixing member 21 according to the specific structure of the window-type fresh air unit, so that the electrical connector can be easily inserted into the corresponding structure when the fixing member 21 is connected to the main body of the window-type fresh air unit. In addition, in this embodiment, a circuit board is also provided on the fixing member 21, and the exhaust fan 30 and the air valve assembly 40 are connected to the electrical connector through the circuit board. The circuit board can be provided with drive circuits, control circuits, etc., to facilitate power supply and control of the exhaust fan 30 and the air valve assembly 40. Moreover, the fact that the circuit board is on the fixing member rather than inside the exhaust cavity 50 also facilitates maintenance.

[0051] In some optional embodiments, the exhaust cavity 50 has multiple exhaust ports 52, which are arranged sequentially along a preset direction. The design of multiple exhaust ports 52 helps to increase the air volume while avoiding the situation where the structural strength of the side shell 10 is insufficient due to the excessive area of ​​a single exhaust port 52.

[0052] Please see Figure 6The specific structure of the damper assembly 40 can be selected according to actual needs. For example, the damper assembly 40 includes a damper plate 41 and a damper drive module 42. The damper plate 41 is provided with multiple ventilation openings 411. The damper plate 41 is movably disposed in the exhaust cavity 50. The damper drive module 42 is drivenly connected to the damper plate 41. The damper plate 41 can move relative to the exhaust port 52 to an open or closed position under the drive of the damper drive module 42. When the damper plate 41 is in the open position, the exhaust port 52 communicates with the interior of the exhaust cavity 50 through the ventilation openings 411. When the damper plate 41 is in the closed position, the damper plate 41 closes the exhaust port 52, thereby preventing outdoor airflow, dust, insects, etc. from entering the exhaust cavity 50 from the exhaust port 52. Of course, the damper assembly 40 can also adopt other structures. For example, the damper assembly 40 includes a rotating plate and a rotating drive motor. The rotating plate is rotatably engaged with the side shell 10, and the opening and closing of the exhaust port 52 is realized by rotation.

[0053] In some optional embodiments, the exhaust cavity 50 is provided with a sliding groove 55 extending in a preset direction. The damper plate 41 is slidably engaged with the sliding groove 55, so that the damper plate 41 can move along the preset direction. In this embodiment, the sliding groove 55 is formed between the first housing 12 and the second housing 13. When installing, the damper plate 41 can be assembled with the second housing 13 first, and then the first housing 12 is installed into the second housing 13 so that the damper plate 41 is exactly in the sliding groove 55, which facilitates installation.

[0054] The damper drive module 42 includes a damper drive motor 43 and a crank 44. A connecting groove 412 is provided on the damper plate 41. The extension direction of the connecting groove 412 is not parallel to the preset direction. The damper drive motor 43 is driven to one end of the crank 44, and the other end of the crank 44 is rotatably connected to the connecting groove 412 and can slide along the connecting groove 412. The damper drive motor 43 drives the crank 44 to rotate, so that the crank 44 slides along the connecting groove 412. When the crank 44 slides along the connecting groove 412, it will drive the damper plate 41 to move along the slide groove 55, thereby realizing the opening and closing of the exhaust port 52 of the damper plate 41. Of course, the structure of the air valve drive module 42 is not limited to this. Those skilled in the art can also choose other suitable structures based on the teachings of this utility model. For example, the air valve drive module 42 can be a screw drive module, a rotary motor translation drive module, a belt translation drive module, a cylinder translation drive module, or a linear motor translation drive module, etc. The specific installation method with the air valve plate 41 is a technology known to those skilled in the art and will not be described in detail here.

[0055] It should also be noted that since some structures formed on the side shell 10 can extend along a preset direction or be arranged sequentially along a preset direction, such as the slide groove 55 and the exhaust port 52, these structures can be pre-formed on the side shell 10 before the side shell 10 is cut, or the side shell 10 can be processed after the side shell 10 is cut, which makes the operation more convenient.

[0056] The exhaust module of the above-mentioned window-type fresh air unit can be applied to the window-type fresh air unit, which includes: a main body and an exhaust module as described above, with the end cap 20 assembled on the main body by a fastener 21.

[0057] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An exhaust module of a window fresh air machine, characterized by, include: A side shell, which extends along a predetermined direction, and has ports at both ends in the predetermined direction; Two end seals are respectively disposed at both ends of the side shell in a predetermined direction and correspondingly close the port. At least one end seal is provided with a fastener for assembly with the body of the window-type fresh air unit. The side shell and the end seals surround to form an exhaust cavity, which has an air inlet and an air outlet. One or more exhaust fans are provided, and the exhaust fans are disposed in the exhaust cavity. When there are multiple exhaust fans, the multiple exhaust fans are arranged sequentially along the preset direction. A damper assembly is provided at the exhaust port for opening and closing the exhaust port.

2. The exhaust module of a window fresh air machine of claim 1, wherein: The side shell includes a first shell and a second shell that are connected to each other. Both the first shell and the second shell extend in the preset direction. The port is formed between the first shell and the second shell. The two end caps are respectively connected to the two ends of the first shell in the preset direction and to the two ends of the second shell in the preset direction.

3. The exhaust module of a window fresh air machine of claim 2, wherein: The first housing has locking grooves on both sides, and the second housing has locking parts on both sides, with the locking parts corresponding to and locking into the locking grooves.

4. The exhaust module of a window fresh air machine of claim 2, wherein: The side shell also includes a support partition extending along the preset direction. The support partition is disposed between the first shell and the second shell and is connected to the first shell and the second shell respectively. The support partition is located in the exhaust cavity and divides the exhaust cavity into a first air cavity and a second air cavity. The support partition is provided with a communication port connecting the first air cavity and the second air cavity. The exhaust fan is disposed in the second air cavity, and the air inlet of the exhaust fan is connected to the communication port.

5. The exhaust module of a window fresh air machine of claim 4, wherein: The support partition has a first support portion, a second support portion, and a mounting portion. The first support portion abuts against the first housing, and the second support portion abuts against the second housing. Both the first support portion and the second support portion extend along the preset direction, and the exhaust fan is mounted on the mounting portion.

6. The exhaust module of a window fresh air machine of claim 5, wherein: The first housing is provided with a plurality of first limiting grooves extending along the preset direction, and the side of the first support portion is limited and engaged with the first limiting grooves; and / or, The second housing is provided with a plurality of second limiting grooves extending along the preset direction, and the side of the second support portion is limited and engaged with the second limiting grooves.

7. The exhaust module of a window-type fresh air unit according to any one of claims 1 to 6, characterized in that: An electrical connector is provided on at least one of the fixing members or at least one of the end seals, and the electrical connector is electrically connected to the exhaust fan and the air valve assembly, respectively.

8. The exhaust module of a window fresh air machine according to any one of claims 1 to 6, characterized in that: The exhaust chamber has multiple exhaust ports, which are arranged sequentially along the preset direction. The damper assembly includes a damper plate and a damper drive module. The damper plate has multiple ventilation openings and is movably disposed within the exhaust chamber. The damper drive module is drivenly connected to the damper plate. The damper plate can move relative to the exhaust opening to an open or closed position under the drive of the damper drive module. When the damper plate is in the open position, the exhaust opening communicates with the interior of the exhaust chamber through the ventilation openings. When the damper plate is in the closed position, the damper plate closes the exhaust opening.

9. The exhaust module of a window fresh air machine of claim 8, wherein: The exhaust cavity is provided with a sliding groove extending along the preset direction, and the air valve plate is slidably engaged with the sliding groove; The air valve drive module includes an air valve drive motor and a crank. A connecting groove is provided on the air valve plate. The extension direction of the connecting groove is not parallel to the preset direction. The air valve drive motor is driven to one end of the crank, and the other end of the crank is rotatably connected to the connecting groove and can slide along the connecting groove.

10. A window fresh air machine characterized by, include: An exhaust module for a window-type fresh air unit as described in any one of claims 1 to 9.

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