Fresh air machine

Abstract

The invention relates to the technical field of fresh air equipment, and discloses a fresh air machine, after a filter screen is installed, the installation of the filter screen can be completed by directly blocking an installation opening through a sealing cover, and if the filter screen needs to be disassembled, only the sealing cover needs to be taken down from the installation opening, and then the filter screen can be taken out. According to the arrangement, the flow of disassembling and assembling the filter screen by a user is simpler and more convenient, and the user experience is improved.

Description

Technical Field

[0001] This application relates to the field of fresh air equipment technology, such as a fresh air ventilator. Background Technology

[0002] As society develops, users have increasingly higher demands for quality of life. In summer and winter, users often keep doors and windows closed for extended periods, leading to stale indoor air and increased carbon dioxide levels. Therefore, users often install fresh air systems to treat outdoor air before introducing it indoors, thus improving indoor air quality. To further enhance the user experience, these systems are often equipped with filters to further filter the incoming fresh air and improve indoor air quality.

[0003] In related technologies, after a period of use, the filters of a fresh air system need to be replaced or cleaned in a timely manner to ensure the filtration effect. To facilitate user installation and removal of the filters, existing fresh air systems generally have multiple clips around the filter to secure it to the casing.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] In existing air purifiers that use multiple clips to secure the filter, multiple clips need to be fixed to the periphery of the filter after installation. When removing the filter, multiple clips need to be removed one by one before the filter can be removed. This makes the process of installing and removing the filter cumbersome and results in a poor user experience.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a fresh air system where the filter can be installed directly by sealing the installation opening with a sealing cap. To remove the filter, simply remove the sealing cap from the installation opening. This design simplifies the filter installation and removal process, improving the user experience.

[0009] This disclosure provides a fresh air ventilator including: a housing, a sealing plate, a filter, and a sealing cover. The housing has an internal air duct; the sealing plate is installed on the housing, located on one side of the air duct, and has an installation opening; the filter is installed in the air duct through the installation opening; the sealing cover includes a cover body and a protrusion, the protrusion being located on the side of the cover body facing the installation opening; wherein the installation opening and the protrusion are correspondingly provided with a snap-fit ​​portion and a snap-fit ​​mating portion; when the cover body is engaged with the installation opening, the snap-fit ​​mating portion of the protrusion engages with the snap-fit ​​portion of the installation opening.

[0010] In some embodiments, the inner wall of the mounting opening is provided with a slot; the protrusion is provided with a snap-fit ​​protrusion corresponding to the slot; wherein, when the snap-fit ​​protrusion is embedded in the slot, the sealing cover snaps onto the sealing plate.

[0011] In some embodiments, the sealing plate is configured with an elastic material at the position corresponding to the mounting opening; the snap-fit ​​protrusion of the protrusion is configured with an elastic material.

[0012] In some embodiments, the housing is further provided with a mounting plate located on one side of the sealing plate, and the mounting plate has a slot on the side facing the sealing plate; the sealing plate and the mounting plate have corresponding edges with inserts; wherein, when the inserts are inserted into the slots, the sealing plate is fixed to the mounting plate.

[0013] In some embodiments, the housing is provided with a plurality of mounting plates, and at least one mounting plate is provided on the left and right sides of the sealing plate, respectively.

[0014] In some embodiments, the height of the mounting plate is a first height, and the height of the sealing plate is a second height; wherein the first height is less than or equal to 2 / 3 of the second height.

[0015] In some embodiments, the air duct is provided with a guide groove, the position of which corresponds to the installation opening; wherein the filter screen can slide along the guide groove to be installed in the air duct.

[0016] In some embodiments, the housing further includes a limiting sidewall located on the other side of the air duct relative to the sealing plate; wherein the two sides of the filter screen can respectively abut against the sealing cover and the limiting sidewall.

[0017] In some embodiments, the distance between the sealing cap and the limiting sidewall is less than the length of the filter screen; the sealing cap is configured as an elastic material.

[0018] In some embodiments, the housing includes a fresh air inlet, an exhaust air inlet, a supply air inlet, and a return air inlet. The fresh air inlet and the exhaust air inlet are located on the first side of the air duct, and the supply air inlet and the return air inlet are located on the second side of the air duct. The fresh air unit includes multiple filters, and at least one filter is provided on the first side and the second side of the air duct, respectively.

[0019] The fresh air ventilator provided in this disclosure embodiment can achieve the following technical effects:

[0020] This disclosure provides a fresh air unit including: a housing, a sealing plate, a filter, and a sealing cover.

[0021] The internal structure of the casing includes an air duct. A sealing plate is installed on the casing, located on one side of the air duct, and has an installation opening. The filter is installed inside the air duct through the installation opening. The sealing cover includes a cover body and a protrusion, with the protrusion located on the side of the cover body facing the installation opening. The installation opening and the protrusion are respectively provided with a snap-fit ​​part and a snap-fit ​​engagement part. When the cover body is engaged with the installation opening, the snap-fit ​​engagement part of the protrusion engages with the snap-fit ​​part of the installation opening. This allows the user to first insert the filter directly into the air duct through the installation opening of the sealing plate, then fasten the sealing cover into the installation opening, and engage the snap-fit ​​part of the sealing cover with the snap-fit ​​part of the installation opening to complete the filter installation. When the user needs to remove the filter, they can first remove the sealing cover directly from the installation opening, and then remove the filter from the air duct through the installation opening to remove the filter. This design simplifies the filter installation and removal process and improves the user experience.

[0022] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0024] Figure 1 This is a schematic diagram of the structure of a fresh air unit provided in an embodiment of this disclosure;

[0025] Figure 2 This is a schematic diagram of the internal structure of a housing provided in an embodiment of this disclosure;

[0026] Figure 3 This is another schematic diagram of the internal structure of the housing provided in this embodiment;

[0027] Figure 4 This is a schematic diagram of the structure of a sealing plate provided in an embodiment of this disclosure;

[0028] Figure 5 This is a schematic diagram of the structure of a sealing cap provided in an embodiment of this disclosure;

[0029] Figure 6 This is a schematic diagram of the structure of an installation plate provided in an embodiment of this disclosure.

[0030] Figure label:

[0031] 10: Housing; 101: Fresh air inlet; 102: Exhaust air outlet; 103: Supply air outlet; 104: Return air outlet; 11: Air duct; 12: Mounting plate; 121: Slot; 13: Side plate; 14: Filter; 15: Guide groove; 16: Total heat exchange module; 17: Limiting side wall;

[0032] 20: Sealing plate; 21: Mounting opening; 22: Slot; 23: Insert strip;

[0033] 30: Sealing cap; 31: Cap body; 32: Protrusion; 321: Snap-fit ​​protrusion. Detailed Implementation

[0034] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0035] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0036] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0037] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0038] Unless otherwise stated, the term "multiple" means two or more.

[0039] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0040] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0042] Existing fresh air systems typically use physical filtration to purify the air, and the filters need to be replaced after a period of use to maintain purification efficiency. However, current fresh air equipment uses a multi-clip design for filter replacement, which has significant drawbacks: firstly, the replacement operation is inconvenient, and the multi-clip design makes the process of disassembling and installing the filter cumbersome, time-consuming, and laborious for users.

[0043] like Figures 1 to 6 As shown in the figure, this embodiment of the present disclosure provides a fresh air system. After installing the filter 14, the installation opening 21 can be directly sealed by the sealing cover 30 to complete the installation of the filter 14. If it is necessary to remove the filter 14, simply remove the sealing cover 30 from the installation opening 21 to remove the filter 14. This design makes the process of installing and removing the filter 14 more convenient for users and improves the user experience.

[0044] like Figures 1 to 6As shown, this embodiment of the present disclosure provides a fresh air blower including: a housing 10, a sealing plate 20, a filter 14, and a sealing cover 30. The housing 10 has an internal air duct 11; the sealing plate 20 is installed on the housing 10, located on one side of the air duct 11, and has an installation opening 21; the filter 14 is installed in the air duct 11 through the installation opening 21; the sealing cover 30 includes a cover body 31 and a protrusion 32, the protrusion 32 being located on the side of the cover body 31 facing the installation opening 21; wherein the installation opening 21 and the protrusion 32 are correspondingly provided with a snap-fit ​​portion and a snap-fit ​​mating portion; when the cover body 31 is engaged with the installation opening 21, the snap-fit ​​mating portion of the protrusion 32 engages with the snap-fit ​​portion of the installation opening 21.

[0045] Specifically, the housing 10 has an internal air duct 11, and the housing 10 is equipped with a fresh air inlet 101 and an air outlet. The fresh air unit can introduce outdoor fresh air into the air duct 11 through the fresh air inlet 101 and deliver the fresh air to the room through the air outlet to improve indoor air quality. A filter 14 is installed in the air duct 11 at positions corresponding to the fresh air inlet 101 and / or the air outlet to filter the fresh air delivered to the room, further improving indoor air quality. A sealing plate 20 is installed on the housing 10 and located on one side of the air duct 11. The sealing plate 20 has an installation opening 21, the size of which is greater than or equal to the cross-sectional area of ​​the filter 14, allowing the user to insert or remove the filter 14 from the air duct 11 through the installation opening 21. The sealing cover 30 includes a cover body 31 and a protrusion 32, the protrusion 32 being provided corresponding to the installation opening 21, and the size of the cover body 31 being larger than the size of the installation opening 21. In this way, after the user inserts the filter 14 into the air duct 11 through the installation opening 21, the protrusion 32 of the sealing cover 30 can be directly inserted into the installation opening 21. At this time, the snap-fit ​​part of the protrusion 32 engages with the snap-fit ​​part of the installation opening 21 to fix the sealing cover 30 at the installation opening 21, and the cover body 31 of the sealing cover 30 can completely block the installation opening 21 to achieve a seal on the air duct 11. When the user needs to remove the filter 14, the user can directly apply force to the sealing cover 30 to disengage the snap-fit ​​part of the protrusion 32 from the snap-fit ​​part of the installation opening 21, and then pull the sealing cover 30 out of the installation opening 21, and then remove the filter 14 from the air duct 11 through the installation opening 21. This design makes the process of removing and installing the filter 14 more convenient and improves the user experience.

[0046] Understandably, existing fresh air systems that use multiple clips to fix the filter 14 typically leave a gap between the installation opening 21 and the filter 14 for easy installation, which prevents the air duct 11 from achieving an effective seal. However, the fresh air system provided in this application, after the filter 14 is installed, seals the installation opening 21 with the sealing cap 30, resulting in a significantly better seal for the air duct 11 compared to existing clip-fixing systems.

[0047] In the above embodiment, the filter screen 14 is configured as a rectangular plate filter screen 14, the mounting opening 21 is configured as a rectangular opening with a size larger than the cross-sectional area of ​​the filter screen 14, and the shape of the cover body 31 and the protrusion 32 of the sealing cover 30 corresponds to the mounting opening 21.

[0048] Optionally, the fresh air unit also includes a total heat exchange module 16, which is installed inside the air duct 11. The sealing plate 20 is positioned corresponding to the total heat exchange module 16, and the size of the sealing plate 20 is greater than or equal to the cross-sectional area of ​​the total heat exchange module 16. This allows the sealing plate 20 to limit the movement of the total heat exchange module 16. Simultaneously, the installation opening 21 is located on one side of the total heat exchange module 16 to prevent interference between the filter 14 and the total heat exchange module 16.

[0049] Optionally, the fresh air unit also includes a side plate 13. After the filter 14, sealing plate 20 and sealing cover 30 are installed, the side plate 13 can be fastened to the outside of the sealing plate 20 to further ensure the airtightness of the air duct 11 and protect the internal structure of the fresh air unit.

[0050] like Figures 4 to 5 As shown, in some embodiments, the inner wall of the mounting opening 21 is provided with a slot 22; the protrusion 32 is provided with a snap-fit ​​protrusion 321 corresponding to the slot 22; wherein, when the snap-fit ​​protrusion 321 is embedded in the slot 22, the sealing cover 30 is snapped onto the sealing plate 20.

[0051] Specifically, the inner wall of the mounting opening 21 is provided with a groove 22, and the peripheral wall of the protrusion 32 is provided with a snap-fit ​​protrusion 321. Thus, when the protrusion 32 is inserted into the mounting opening 21, the snap-fit ​​protrusion 321 embeds into the groove 22, thereby snapping the sealing cover 30 into the mounting opening 21. When the user applies force outward to the sealing cover 30, the snap-fit ​​protrusion 321 disengages from the groove 22, at which point the user can remove the sealing cover 30 from the mounting opening 21. The shapes of the groove 22 and the snap-fit ​​protrusion 321 can be customized according to the user's actual needs, as long as it allows the sealing cover 30 to snap into the mounting opening 21.

[0052] Optionally, the peripheral wall of the protrusion 32 is provided with a plurality of snap-fit ​​protrusions 321, and at least one snap-fit ​​protrusion 321 is provided on the left, right, upper and lower sides of the protrusion 32. The inner wall of the mounting opening 21 is provided with a plurality of slots 22 corresponding to the plurality of snap-fit ​​protrusions 321. In this way, after the protrusion 32 is inserted into the mounting opening 21, the plurality of snap-fit ​​protrusions 321 can be respectively embedded in the plurality of slots 22 to enhance the stability of the sealing cover 30 snapping into the mounting opening 21.

[0053] Optionally, the peripheral wall of the protrusion 32 is provided with a strip-shaped annular snap-fit ​​protrusion 321, and the inner wall of the mounting opening 21 is provided with an annular groove 22 corresponding to the snap-fit ​​protrusion 321. In this way, after the protrusion 32 is inserted into the mounting opening 21, the annular snap-fit ​​protrusion 321 can be embedded in the annular groove 22 to enhance the stability of the sealing cover 30 snapping into the mounting opening 21.

[0054] In some embodiments, the sealing plate 20 is configured with an elastic material at the position corresponding to the mounting opening 21; the snap-fit ​​protrusion 321 of the protrusion 32 is configured with an elastic material.

[0055] Specifically, the user can push the sealing cap 30 into the mounting opening 21, at which point the snap-fit ​​protrusion 321 or the mounting opening 21 undergoes elastic deformation, allowing the snap-fit ​​protrusion 321 to embed into the slot 22. Alternatively, the user can apply an outward pressure to the sealing cap 30, at which point the snap-fit ​​protrusion 321 or the mounting opening 21 undergoes elastic deformation, allowing the snap-fit ​​protrusion 321 to disengage from the slot 22. Furthermore, configuring the corresponding positions of the sealing plate 20 and the mounting opening 21, as well as the snap-fit ​​protrusion 321 of the protrusion 32, as elastic materials allows for better adaptation to different manufacturing tolerances, further enhancing the sealing effect.

[0056] In the above embodiments, the sealing plate 20 may be configured entirely of an elastic material, or only the portion corresponding to the mounting opening 21 may be configured of an elastic material. Similarly, the protrusion 32 may be configured entirely of an elastic material, or only the snap-fit ​​protrusion 321 may be configured of an elastic material.

[0057] Optionally, the sealing plate 20 is configured with EPP (expanded polypropylene) material at the position corresponding to the mounting opening 21; the snap-fit ​​protrusion 321 of the protrusion 32 is configured with EPP material.

[0058] like Figures 2 to 6 As shown, in some embodiments, the housing 10 is further provided with a mounting plate 12, which is located on one side of the sealing plate 20, and the mounting plate 12 is provided with a slot 121 on the side facing the sealing plate 20; the sealing plate 20 and the mounting plate 12 are provided with inserts 23 on their corresponding edges; wherein, when the inserts 23 are inserted into the slots 121, the sealing plate 20 is fixed to the mounting plate 12.

[0059] Specifically, the mounting plate 12 is located on one side of the sealing plate 20. The shape of the mounting plate 12 corresponds to the shape of the sealing plate 20, and a slot 121 is provided on the edge of the mounting plate 12 facing the sealing plate 20. A strip 23 is provided on the sealing plate 20 corresponding to the slot 121, and the strip 23 can be inserted into the slot 121 through the opening. Thus, when the user needs to install the sealing plate 20, the strip 23 of the sealing plate 20 can be inserted into the slot 121 of the mounting plate 12 to fix the sealing plate 20 to the housing 10; when the user needs to remove the sealing plate 20, the strip 23 of the sealing plate 20 can be directly pulled out from the slot 121 of the mounting plate 12 to remove the sealing plate 20 from the housing 10. This configuration allows the sealing plate 20 to be detachably installed on the housing 10, facilitating user installation and removal of the sealing plate 20. Meanwhile, by using the insertion strip 23 and the slot 121 to install the sealing plate 20 onto the housing 10, the sealing performance between the sealing plate 20 and the mounting plate 12 can be effectively improved.

[0060] like Figure 2 As shown, in some embodiments, the housing 10 is provided with a plurality of mounting plates 12, and at least one mounting plate 12 is provided on the left and right sides of the sealing plate 20, respectively.

[0061] Specifically, the housing 10 is provided with a left mounting plate 12 and a right mounting plate 12, which are located on the left and right sides of the sealing plate 20, respectively. A strip 23 is provided along the left edge of the sealing plate 20 corresponding to the left mounting plate 12, and a strip 23 is also provided along the right edge of the sealing plate 20 corresponding to the right mounting plate 12. This allows the user to insert the strip 23 on the left side of the sealing plate 20 into the slot 121 of the left mounting plate 12 to limit the left half of the sealing plate 20, and to insert the strip 23 on the right side of the sealing plate 20 into the slot 121 of the right mounting plate 12 to limit the right half of the sealing plate 20. This arrangement allows for simultaneous limiting of both the left and right halves of the sealing plate 20 via the left and right mounting plates 12, improving the stability of the sealing plate 20 after installation.

[0062] like Figure 2 As shown, in some embodiments, the height of the mounting plate 12 is a first height, and the height of the sealing plate 20 is a second height; wherein the first height is less than or equal to 2 / 3 of the second height.

[0063] Specifically, the height of the mounting plate 12 is less than or equal to 2 / 3 of the height of the sealing plate 20, and the upper end of the slot 121 of the mounting plate 12 has an opening. This allows the sealing plate 20 to be placed on top of the mounting plate 12 first, and then pushed downwards. At this time, the insert 23 of the sealing plate 20 slides into the slot 121 from the opening at the upper end of the slot 121 and slides along the slot 121. This design makes it easier for the user to fix the sealing plate 20 to the mounting plate 12. At the same time, making the height of the mounting plate 12 less than or equal to 2 / 3 of the height of the sealing plate 20 also reduces the material required for the housing 10.

[0064] Optionally, the height of the mounting plate 12 is greater than or equal to one-third of the height of the sealing plate 20 to ensure the stability of the sealing plate 20 after it is fixed to the mounting plate 12. For example, the first height can be two-thirds, one-half, or one-third of the second height.

[0065] like Figure 3 As shown, in some embodiments, the air duct 11 is provided with a guide groove 15, the position of which corresponds to the installation opening 21; wherein, the filter screen 14 can slide along the guide groove 15 to be installed in the air duct 11.

[0066] Specifically, a guide groove 15 is provided inside the air duct 11 at a position corresponding to the installation opening 21, and the guide groove 15 is perpendicular to the sealing plate 20. When installing the filter screen 14, one end of the filter screen 14 can be inserted into the guide groove 15 through the installation opening 21, and then the filter screen 14 can be slid along the guide groove 15 into the air duct 11 to complete the installation. When removing the filter screen 14, it can be directly pulled out through the installation opening 21, at which point the filter screen 14 slides out of the air duct 11 along the guide groove 15. This design allows the filter screen 14 to slide along the guide groove 15, providing clear guidance for its installation, making the installation of the filter screen 14 more convenient and accurate, while also ensuring the positional accuracy of the filter screen 14 after installation and improving the filtration effect.

[0067] like Figure 3 As shown, in some embodiments, the housing 10 further includes a limiting sidewall 17, which is located on the other side of the air duct 11 relative to the sealing plate 20; wherein, the two sides of the filter screen 14 can respectively abut against the sealing cover 30 and the limiting sidewall 17.

[0068] Specifically, the side wall of the housing 10 facing away from the sealing plate 20 forms a limiting sidewall 17. An air duct 11 is constructed between the sealing plate 20 and the limiting sidewall 17, and the limiting sidewall 17 and the sealing plate 20 are perpendicular to each other. When the filter screen 14 is installed in the air duct 11 and the sealing cover 30 is fastened to the installation opening 21, the two sides of the filter screen 14 abut against the sealing cover 30 and the limiting sidewall 17, respectively. With this configuration, the limiting sidewall 17 and the sealing cover 30 of the housing 10 can be used to limit the filter screen 14 on both sides, ensuring that the filter screen 14 is fixed in position within the air duct 11, preventing the filter screen 14 from shaking or shifting under the impact of airflow, thereby ensuring the normal operation and filtration effect of the fresh air unit.

[0069] In some embodiments, the distance between the sealing cap 30 and the limiting sidewall 17 is less than the length of the filter screen 14; the sealing cap 30 is configured as an elastic material.

[0070] Specifically, the distance between the sealing cover 30 and the limiting sidewall 17 is less than the length of the filter screen 14 and the sealing cover 30 is made of elastic material. On the one hand, the elastic deformation of the sealing cover 30 can make the filter screen 14 more tightly installed. On the other hand, it can further enhance the limiting effect on the filter screen 14 and prevent the filter screen 14 from loosening in the air duct 11.

[0071] Understandably, existing fresh air systems that use multiple clips to fix the filter 14 suffer from difficulties in ensuring a tight fit between the filter 14 and the equipment, easily leading to gaps that allow unfiltered air to enter the room directly, reducing purification efficiency and failing to meet users' air quality requirements. The fresh air system provided in this application, however, achieves a tight fit between the sealing cover 30 and the filter 14, ensuring the filter 14 adheres closely to the casing 10 and thus improving sealing.

[0072] like Figures 1 to 3 As shown, in some embodiments, the housing 10 includes a fresh air inlet 101, an exhaust air outlet 102, a supply air outlet 103, and a return air outlet 104. The fresh air inlet 101 and the exhaust air outlet 102 are located on the first side of the air duct 11, and the supply air outlet 103 and the return air outlet 104 are located on the second side of the air duct 11. The fresh air unit includes a plurality of filters 14, and at least one filter 14 is provided on the first side and the second side of the air duct 11, respectively.

[0073] Specifically, the housing 10 is equipped with multiple air vents, and filters 14 are installed on both sides of the air duct 11, which can filter airflow from different directions, improve the air handling capacity of the fresh air unit, and meet the different air quality requirements of various usage scenarios.

[0074] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A fresh air ventilator, characterized in that, include: The casing (10) has an internal air duct (11); A sealing plate (20) is installed on the housing (10). The sealing plate (20) is located on one side of the air duct (11), and the sealing plate (20) is provided with an installation opening (21). The filter (14) is installed in the air duct (11) through the mounting opening (21); and, A sealing cap (30) includes a cap body (31) and a protrusion (32), the protrusion (32) being disposed on the side of the cap body (31) facing the mounting opening (21); The mounting opening (21) and the protrusion (32) are respectively provided with a snap-fit ​​part and a snap-fit ​​mating part; When the cover (31) is fastened to the mounting opening (21), the snap-fit ​​portion of the protrusion (32) snaps into the snap-fit ​​portion of the mounting opening (21).

2. The fresh air system according to claim 1, characterized in that, The inner wall of the mounting opening (21) is provided with a slot (22); and, The protrusion (32) is provided with a snap-fit ​​protrusion (321) corresponding to the slot (22); When the snap-fit ​​protrusion (321) is embedded in the snap-fit ​​groove (22), the sealing cover (30) snaps onto the sealing plate (20).

3. The fresh air system according to claim 2, characterized in that, The sealing plate (20) is configured with an elastic material at the position corresponding to the mounting opening (21); and / or, The snap-fit ​​protrusion (321) of the protrusion (32) is configured as an elastic material.

4. The fresh air system according to claim 1, characterized in that, The housing (10) is further provided with a mounting plate (12), which is located on one side of the sealing plate (20), and the mounting plate (12) has a slot (121) on the side facing the sealing plate (20); and, The sealing plate (20) and the mounting plate (12) are provided with inserts (23) along their corresponding edges; When the insert (23) is inserted into the slot (121), the sealing plate (20) is fixed to the mounting plate (12).

5. The fresh air system according to claim 4, characterized in that, The housing (10) is provided with a plurality of mounting plates (12), and at least one mounting plate (12) is provided on the left and right sides of the sealing plate (20).

6. The fresh air system according to claim 4, characterized in that, The height of the mounting plate (12) is a first height, and the height of the sealing plate (20) is a second height; Wherein, the first height is less than or equal to 2 / 3 of the second height.

7. The fresh air system according to claim 1, characterized in that, The air duct (11) is provided with a guide groove (15), and the position of the guide groove (15) corresponds to the installation opening (21); The filter (14) can slide along the guide groove (15) to be installed in the air duct (11).

8. The fresh air unit according to any one of claims 1 to 7, characterized in that, The housing (10) also includes a limiting sidewall (17), which is located on the other side of the air duct (11) relative to the sealing plate (20); The filter screen (14) can abut against the sealing cover (30) and the limiting sidewall (17) on both sides respectively.

9. The fresh air system according to claim 8, characterized in that, The distance between the sealing cap (30) and the limiting sidewall (17) is less than the length of the filter screen (14); and, The sealing cap (30) is configured as an elastic material.

10. The fresh air system according to any one of claims 1 to 7, characterized in that, The housing (10) includes a fresh air inlet (101), an exhaust air outlet (102), a supply air outlet (103), and a return air outlet (104). The fresh air inlet (101) and the exhaust air outlet (102) are located on the first side of the air duct (11), and the supply air outlet (103) and the return air outlet (104) are located on the second side of the air duct (11). The fresh air unit includes multiple filters (14), and at least one filter (14) is provided on the first side and the second side of the air duct (11).

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