Fresh air module and air conditioner

Abstract

This disclosure relates to a fresh air module and an air conditioner. The fresh air module includes an air inlet housing with an air inlet channel formed therein; an air outlet volute connected to the air inlet housing, with an air outlet channel formed therein, communicating with the air inlet channel; a fan assembly located within the air outlet volute for driving airflow from the air inlet channel to the air outlet channel; and a guide structure formed around the connection between the air outlet channel and the air inlet channel, wherein the portion of the guide structure near the air outlet of the air outlet volute is recessed toward the air outlet of the air outlet volute. This allows for an appropriate increase in the airflow demand at the air outlet of the air outlet volute, thereby mitigating the backflow of airflow at the air outlet of the air outlet volute.

Description

Technical Field

[0001] This disclosure relates to the field of air conditioners, and more particularly to a fresh air module and an air conditioner. Background Technology

[0002] In related technologies, due to people's high requirements for indoor air quality, air conditioner technology that includes fresh air modules is also constantly developing. During the operation of the fresh air module, airflow can enter the fresh air module through ventilation ducts. The fresh air module is then processed through filtration and other means before delivering fresh air into the room, thereby improving indoor air quality.

[0003] However, without enlarging the openings in the wall, the current air conditioner's ventilation duct has a small diameter and a high air velocity. When this high-velocity airflow enters the fresh air module through the ventilation duct, it cannot diffuse evenly, resulting in uneven air pressure distribution within the intake housing. This causes airflow recirculation as it flows from the intake duct to the outlet duct. For example, the air pressure near the outlet vent within the intake housing is lower than in other areas, leading to more severe airflow recirculation in this region. Summary of the Invention

[0004] To overcome the problems existing in the related technologies, this disclosure provides a fresh air module and an air conditioner that can appropriately increase the airflow demand at the air outlet of the air outlet volute, thereby alleviating the backflow of airflow at the air outlet of the air outlet volute.

[0005] According to a first aspect of the present disclosure, a fresh air module is provided, the fresh air module comprising:

[0006] An air inlet housing, wherein an air inlet channel is formed inside the air inlet housing;

[0007] An air outlet volute is connected to the air inlet housing, and an air outlet channel is formed inside the air outlet volute, which is connected to the air inlet channel;

[0008] A fan assembly, located inside the outlet volute, is used to drive airflow from the inlet channel to the outlet channel;

[0009] A flow guide structure is formed around the connection between the air outlet channel and the air inlet channel. The portion of the flow guide structure near the air outlet of the air outlet volute is recessed toward the air outlet of the air outlet volute.

[0010] In some embodiments, the flow guiding structure is formed by connecting at least two flow guiding portions, with the flow guiding portion near the air outlet of the air outlet volute being recessed toward the air outlet of the air outlet volute.

[0011] In some embodiments, each of the flow guides is an arc-shaped structure, and the axes of each flow guide are the same.

[0012] In some embodiments, the fresh air module includes:

[0013] The volute tongue is located at the air outlet of the air outlet volute.

[0014] The axial radius of the guide section near the volute tongue is greater than the axial radius of the guide section away from the volute tongue, and the axial radius of each guide section is smaller than the radius of the impeller of the wind turbine assembly.

[0015] In some embodiments, the central angle of the guide portion near the air outlet of the air outlet volute is greater than or equal to 10 degrees and less than or equal to 180 degrees.

[0016] In some embodiments, the connection between two adjacent guide sections has a preset curvature;

[0017] The preset curvature is determined based on the curvature of two adjacent guide sections.

[0018] In some embodiments, two adjacent flow guides include:

[0019] First guide section;

[0020] The second guide section has the preset curvature at one end where it is connected to the first guide section.

[0021] The axial radius of the second guide section is smaller than that of the first guide section.

[0022] In some embodiments, the fresh air module includes;

[0023] A connector, located between two adjacent flow guides, is used to establish a connection between the two adjacent flow guides, wherein the connector has the preset curvature.

[0024] In some embodiments, at least a portion of the outer wall of the air inlet housing is recessed toward the air outlet volute to form a recessed portion;

[0025] The recessed portion is located near the air outlet of the air outlet volute.

[0026] In some embodiments, the fresh air module includes:

[0027] A filter assembly, located between the air inlet channel and the air outlet channel, is configured to filter the airflow flowing through the air inlet channel to the air outlet channel.

[0028] According to a second aspect of the present disclosure, an air conditioner is provided, comprising:

[0029] Air conditioner indoor unit;

[0030] The outdoor unit of the air conditioner is used in conjunction with the indoor unit of the air conditioner;

[0031] The indoor unit of the air conditioner includes: the fresh air module described in any one of the first aspects above.

[0032] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0033] In this embodiment, the fresh air module includes an air inlet housing, an air outlet volute, a fan assembly, and a flow guide structure. An air inlet channel is formed inside the air inlet housing; an air outlet channel is formed inside the air outlet volute and connected to the air inlet housing, while the air outlet channel is connected to the air inlet channel; the fan assembly is located inside the air outlet volute and is used to drive airflow from the air inlet channel to the air outlet channel; the flow guide structure is formed around the connection between the air outlet channel and the air inlet channel, and the portion of the flow guide structure near the air outlet of the air outlet volute is recessed toward the air outlet of the air outlet volute.

[0034] Because the air pressure distribution inside the air inlet housing is uneven, and the air pressure at the air outlet near the air outlet volute is lower than that at other locations inside the air inlet housing, airflow backflow occurs significantly in this area. In this embodiment of the present disclosure, by setting the part of the air guide structure near the air outlet volute to be recessed towards the air outlet volute, the airflow demand at the air outlet volute can be appropriately increased, thereby alleviating the backflow of airflow at the air outlet volute.

[0035] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0036] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0037] Figure 1 This is a schematic diagram of the exploded structure of a fresh air module according to an exemplary embodiment. Figure 1 ;

[0038] Figure 2 This is a three-dimensional structural schematic diagram of an air outlet volute according to an exemplary embodiment;

[0039] Figure 3 This is a schematic cross-sectional structure of an air outlet volute according to an exemplary embodiment. Figure 1 ;

[0040] Figure 4 This is a schematic cross-sectional structure of an air outlet volute according to an exemplary embodiment. Figure 2 ;

[0041] Figure 5 This is a schematic cross-sectional structure of an air outlet volute according to an exemplary embodiment. Figure 3 ;

[0042] Figure 6 This is a schematic diagram of the internal structure of an air outlet volute according to an exemplary embodiment. Figure 1 ;

[0043] Figure 7 This is a schematic diagram of the internal structure of an air outlet volute according to an exemplary embodiment. Figure 2 ;

[0044] Figure 8 This is a schematic diagram of the internal structure of an air outlet volute according to an exemplary embodiment. Figure 3 ;

[0045] Figure 9 This is a schematic diagram of the structure of an air inlet housing according to an exemplary embodiment;

[0046] Figure 10 This is a schematic diagram of the exploded structure of a fresh air module according to an exemplary embodiment. Figure 2 . Detailed Implementation

[0047] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0048] Figure 1 This is a schematic diagram of the exploded structure of a fresh air module according to an exemplary embodiment. Figure 1 ,like Figure 1 As shown, the fresh air module includes:

[0049] An air inlet housing 101, wherein an air inlet channel is formed inside the air inlet housing 101;

[0050] An air outlet volute 102 is connected to the air inlet housing 101. An air outlet channel is formed inside the air outlet volute 102, and the air outlet channel is connected to the air inlet channel.

[0051] The fan assembly, located inside the air outlet volute 102, is used to drive airflow from the air inlet channel to the air outlet channel;

[0052] A flow guide structure 104 is formed around the connection between the air outlet channel and the air inlet channel. The portion of the flow guide structure 104 near the air outlet of the air outlet volute 102 is recessed toward the air outlet of the air outlet volute 102.

[0053] The fresh air module provided in this embodiment can filter airflow before introducing it into the room to refresh polluted indoor air, and can also exhaust polluted indoor air to the outside to ensure indoor air quality. It is suitable not only for small spaces such as apartments, villas, and offices, but also for public places with high traffic or relatively enclosed spaces such as internet cafes, karaoke bars, computer rooms, hotels, shopping malls, factories, office buildings, restaurants, banks, classrooms, and hospital wards.

[0054] In this embodiment, the fresh air module includes an air inlet housing 101, an air outlet volute 102, a fan assembly, and a flow guiding structure 104, wherein the air inlet housing 101 and the air outlet volute 102 are connected. Here, the air outlet volute 102 can be regarded as an airflow channel, which can collect the airflow flowing out from the impeller of the fan assembly and guide the airflow to the air outlet of the air outlet volute 102; the material and shape of the air outlet volute 102 can be set according to the actual situation, and are not limited in this embodiment.

[0055] In some embodiments, the air inlet housing 101 and the air outlet volute 102 can be fixedly connected by means of threaded connection, welding connection, adhesive bonding, heat fusion connection, or electrofusion connection. Different connection methods can be selected depending on the materials of the air inlet housing 101 and the air outlet volute 102. For example, when the air inlet housing 101 and the air outlet volute 102 are made of steel, threaded connection and welding connection can be used to establish the connection between them. As another example, when the air inlet housing 101 and the air outlet volute 102 are made of plastic, such as polyethylene (PE), threaded connection, adhesive bonding, heat fusion connection, or electrofusion connection can be used to establish the connection between them.

[0056] Here, an air inlet channel is formed inside the air inlet housing 101, and an air outlet channel is formed inside the air outlet volute 102. The air inlet channel and the air outlet channel are interconnected. The fan assembly is located inside the air outlet volute 102 and can drive the airflow through the air inlet channel of the air inlet housing 101 to the air outlet channel and into the air outlet volute 102.

[0057] It should be noted that, due to the uneven airflow distribution inside the air inlet housing 101, there may be an air pressure imbalance in multiple different areas within the air inlet housing 101. Furthermore, since the airflow demand in the air outlet volute 102 is limited, and the air inlet channel of the air inlet housing 101 and the air outlet channel of the air outlet volute 102 are interconnected, the airflow in the air outlet volute 102 will flow back into the air inlet housing 101, and the airflow in the air outlet volute 102 will accumulate at the air outlet of the air outlet volute 102, resulting in severe airflow backflow at the air outlet of the air outlet volute 102.

[0058] In this embodiment, the flow guiding structure 104 is formed around the connection between the air outlet channel and the air inlet channel, and the portion of the flow guiding structure 104 near the air outlet of the air outlet volute 102 is recessed towards the air outlet of the air outlet volute 102. Here, the shape of the flow guiding structure 104 can correspond to the shape of the air inlet of the air outlet volute. For example, if the air inlet of the air outlet volute 102 is circular, the shape of the flow guiding structure 104 is also circular; or, for another example, if the air inlet of the air outlet volute 102 is square, the shape of the flow guiding structure 104 is also square. The flow guiding structure 104 can also be referred to as a flow guiding ring formed around the connection between the air outlet channel and the air inlet channel.

[0059] In some embodiments, the portion of the flow guiding structure 104 near the air outlet of the air outlet volute 102 is recessed toward the air outlet of the air outlet volute 102. The air inlet of the air outlet volute 102 can maintain its own structure unchanged, and the change in the flow guiding structure 104 can also improve the backflow problem.

[0060] In other embodiments, when the location of the airflow guiding structure 104 changes, the shape of the air inlet of the air outlet volute 102 can be adaptively changed according to the change of the airflow guiding structure 104, so that the air outlet volute 102 and the airflow guiding structure 104 are more compatible, the airflow guiding structure 104 can be more properly installed in the air outlet volute 102, and it can be better applied to the fresh air module.

[0061] In some embodiments, taking a circular structure as an example, a section of the guide structure near the air outlet of the air outlet volute 102 can be recessed towards the air outlet of the air outlet volute 102, meaning the axial radius of this section of the guide structure is greater than the axial radius of the initial guide structure. In other embodiments, taking a square structure as an example, a section of the guide structure near the air outlet of the air outlet volute 102 can be recessed towards the air outlet of the air outlet volute 102, meaning the distance from the center point of this section of the guide structure to the center point of the guide structure is greater than the distance from the center point of the initial guide structure to the center point of the guide structure. The shape of the guide structure 104 can be adaptively adjusted according to the application scenario and the device used, and is not limited here.

[0062] Because the air pressure distribution inside the air inlet housing 101 is uneven, and the air pressure at the air outlet near the air outlet volute 102 inside the air inlet housing 101 is lower than the air pressure at other locations inside the air inlet housing 101, the airflow backflow in this area is quite severe. In this embodiment of the present disclosure, by setting the part of the air outlet near the air outlet volute 102 on the guide structure 104 to be recessed toward the air outlet volute 102, the airflow demand at the air outlet volute 102 can be appropriately increased, thereby alleviating the backflow of airflow at the air outlet volute 102.

[0063] In some embodiments, the flow guiding structure 104 is formed by connecting at least two flow guiding portions, and the flow guiding portion near the air outlet of the air outlet volute 102 is recessed toward the air outlet of the air outlet volute 102.

[0064] In some embodiments, in the airflow guiding structure 104, the airflow guiding portion near the air outlet of the air outlet volute 102 can be recessed toward the air outlet of the air outlet volute 102, while the other airflow guiding portions away from the air outlet of the air outlet volute 102 can remain unchanged.

[0065] In other embodiments, in the airflow guiding structure 104, the airflow guiding portion near the air outlet of the air outlet volute 102 can be recessed toward the air outlet of the air outlet volute 102, and other airflow guiding portions away from the air outlet of the air outlet volute 102 can be adaptively adjusted according to the distance between the airflow guiding portion and the air outlet of the air outlet volute.

[0066] Taking the circular structure of the airflow guide 104 as an example, the axial radius of each airflow guide can correspond to the distance between each airflow guide and the air outlet of the air outlet volute 102. Here, the distance between each airflow guide and the air outlet of the air outlet volute 102 can be the distance from the midpoint of each airflow guide to the air outlet of the air outlet volute 102. For example, at locations where the distance between the air outlet volute 102 and the air outlet of the air outlet volute 102 is relatively close, the axial radius of the airflow guide can be appropriately increased to increase the airflow demand of the air outlet volute 102 at that location; at locations where the distance between the air outlet volute 102 and the air outlet of the air outlet volute 102 is relatively far, the axial radius of the airflow guide can be appropriately decreased to reduce the airflow demand of the air outlet volute 102 at that location.

[0067] In this embodiment of the disclosure, the structure of each flow guide in the flow guide structure 104 can be adapted to reduce the situation of airflow backflow.

[0068] Figure 2 This is a three-dimensional structural schematic diagram of an air outlet volute according to an exemplary embodiment, such as... Figure 2 As shown, each of the flow guides is an arc-shaped structure, and the axes of each flow guide are the same.

[0069] In this embodiment, each guide section is an arc-shaped structure with the same axis, and the axis of each guide section is the same as the axis of the fan assembly. Here, the fan assembly is located inside the outlet volute 102 and is used to drive the airflow from the inlet channel to the outlet channel, while the guide structure 104 is formed around the connection between the outlet channel and the inlet channel, such as... Figure 2 As shown, the impeller 202 of the wind turbine assembly is located below the flow guide structure 104, and the axis of the flow guide structure 104 coincides with the axis of the impeller 202 of the wind turbine assembly, that is, the axis of the flow guide structure 104 is the same as the axis of the wind turbine assembly.

[0070] In the related technology, the flow guiding structure 104 is circular. In this embodiment, each flow guiding part is set as an arc-shaped structure with the same axis. This ensures that the changes of each flow guiding part are all based on the basic circle and are adjusted accordingly. Each flow guiding part is set according to a specific axis, ensuring that the flow guiding structure 104 formed by each flow guiding part can be applied to the fresh air module and can improve the problem of airflow backflow in the air outlet volute 102.

[0071] Figure 3 This is a schematic cross-sectional structure of an air outlet volute according to an exemplary embodiment. Figure 1 ,like Figure 3 As shown, the fresh air module includes:

[0072] The volute tongue 105 is located at the air outlet of the air outlet volute 102;

[0073] The axial radius of the guide portion near the volute tongue 105 is greater than the axial radius of the guide portion away from the volute tongue 105, and the axial radius of each guide portion is smaller than the radius of the impeller 202 of the wind turbine assembly.

[0074] Here, the volute tongue 105 is located at the air outlet of the outlet volute 102, and its function is to prevent airflow from circulating within the outlet volute 102. Among the various guide sections, the axial radius of the guide section closer to the volute tongue 105 is larger than the axial radius of the guide section farther from the volute tongue 105, and the axial radius of each guide section is smaller than the radius of the impeller 202 of the fan assembly. The guide structure 104 can be formed by connecting at least two guide sections, and the axial radius of the guide section closer to the volute tongue 105 is larger than the axial radius of the other guide sections.

[0075] In some embodiments, the flow guiding structure 104 may be formed by connecting two flow guiding portions. For example... Figure 3 As shown, the flow guiding structure 104 is formed by connecting the third flow guiding part 301 and the fourth flow guiding part 302. The third flow guiding part 301 is close to the volute tongue 105, and the fourth flow guiding part 302 is far away from the volute tongue 105. The axial radius r1 of the third flow guiding part is greater than the axial radius r2 of the fourth flow guiding part.

[0076] In some embodiments, the flow guiding structure 104 may be formed by connecting four flow guiding parts. Figure 4 This is a schematic cross-sectional structure of an air outlet volute according to an exemplary embodiment. Figure 2 ,like Figure 4 As shown, the flow guiding structure 104 is formed by connecting the fifth flow guiding section 401, the sixth flow guiding section 402, the seventh flow guiding section 403, and the eighth flow guiding section 404. The fifth flow guiding section 401 is close to the volute tongue 105, while the sixth flow guiding section 402, the seventh flow guiding section 403, and the eighth flow guiding section 404 are far from the volute tongue 105. The axial radius r3 of the fifth flow guiding section is greater than the axial radius r4 of the sixth flow guiding section, the axial radius r3 of the fifth flow guiding section is greater than the axial radius r5 of the seventh flow guiding section, and the axial radius r3 of the fifth flow guiding section is greater than the axial radius r6 of the eighth flow guiding section.

[0077] In this embodiment, since airflow often backflows at the air outlet of the air outlet volute 102, i.e., at the volute tongue 105 of the air outlet volute 102, setting the axial radius of the guide portion near the volute tongue 105 to be larger than the axial radius of the guide portion away from the volute tongue 105 can increase the airflow volume at the guide portion near the volute tongue 105, better alleviating the problem of airflow backflow at the volute tongue 105 of the air outlet volute 102. Furthermore, since the axial radius of each guide portion is smaller than the radius of the impeller 202 of the fan assembly, the suction force of the impeller 202 of the fan assembly on the airflow can be guaranteed, avoiding the situation of increased noise or reduced airflow.

[0078] Figure 5 This is a schematic cross-sectional structure of an air outlet volute according to an exemplary embodiment. Figure 3 ,like Figure 5 As shown, the central angle 501 of the guide portion of the air outlet near the air outlet volute is greater than or equal to 10 degrees and less than or equal to 180 degrees.

[0079] Here, the central angle 501 of the guide portion near the air outlet of the air outlet volute can be defined as greater than or equal to 10 degrees and less than or equal to 180 degrees. It should be noted that, since this embodiment improves the situation where there is a lot of backflow at the air outlet of the air outlet volute 102, the axial radius of the guide portion near the air outlet of the air outlet volute 102 is larger than the axial radius of the guide portions at other locations. The guide portion near the air outlet of the air outlet volute 102 needs to cover the location of the air outlet of the air outlet volute 102, that is, the air outlet of the air outlet volute 102 is within the range corresponding to the central angle 501 of the guide portion near the air outlet of the air outlet volute 102.

[0080] When the central angle 501 of the guide section near the air outlet of the air outlet volute is less than 10 degrees, the area of ​​the large-radius guide section is too small, and the effect of improving the backflow of airflow at the air outlet of the air outlet volute 102 is not good; when the central angle 501 of the guide section near the air outlet of the air outlet volute is greater than 180 degrees, the area of ​​the large-radius guide section is too large, and the effect of improving the backflow of airflow at the air outlet of the air outlet volute 102 is not obvious.

[0081] In this embodiment, the central angle 501 of the guide portion near the air outlet of the air outlet volute is set to a range of 10 degrees to 180 degrees, which can better improve the situation where there is a lot of backflow at the air outlet of the air outlet volute 102.

[0082] In some embodiments, the connection between two adjacent guide sections has a preset curvature;

[0083] The preset curvature is determined based on the curvature of two adjacent guide sections.

[0084] Here, the connection between two adjacent air guides has a preset curvature, which can be determined based on the curvature of the two adjacent air guides. When two adjacent air guides are connected to each other, the curvature of the air guides themselves may prevent a smooth connection at the joint, which may cause airflow obstruction when passing through the joint, affecting the airflow in the fresh air module.

[0085] In this embodiment of the disclosure, the connection between two adjacent guide sections is set to have a preset curvature, that is, the connection between two adjacent guide sections is smoothed, so that when the airflow flows through the guide structure 104, the obstruction encountered by the airflow at the connection between the two adjacent guide sections can be reduced, and the smooth flow of the airflow in the outlet volute 102 can be guaranteed.

[0086] Figure 6 This is a schematic diagram of the internal structure of an air outlet volute according to an exemplary embodiment. Figure 1 ,like Figure 6 As shown, two adjacent flow guides include:

[0087] First guide section 601;

[0088] The second guide section 602 has the preset curvature at one end connected to the first guide section 601.

[0089] Wherein, the axial radius r7 of the second guide section is smaller than the axial radius r8 of the first guide section.

[0090] Here, two adjacent guide sections include a first guide section 601 and a second guide section 602. The edges of the first guide section 601 and the second guide section 602 are in contact with each other. Since the guide structure 104 includes two guide sections, the edges at both ends of the first guide section 601 and the second guide section 602 are in contact with each other, thus forming the guide structure 104 together. The axial radius r8 of the first guide section is larger than the axial radius r7 of the second guide section. The end of the second guide section 602 that is connected to the first guide section 601 has a preset curvature, that is, the end of the second guide section 602 that is connected to the first guide section 601 forms a shape with a preset curvature for smooth connection with the first guide section 601.

[0091] In some embodiments, at the end where the second guide portion 602 is connected to the first guide portion 601, a portion of the structure of the second guide portion 602 may overlap with the first guide portion 601. Figure 7 This is a schematic diagram of the internal structure of an air outlet volute according to an exemplary embodiment. Figure 2 ,like Figure 7 As shown, the flow guiding structure 104 includes a first flow guiding section 601 and a second flow guiding section 602, which are connected to each other. The axial radius r8 of the first flow guiding section is larger than the axial radius r7 of the second flow guiding section. The end of the second flow guiding section 602 connected to the first flow guiding section 601 has a preset curvature, and part of the structure of the second flow guiding section 602 overlaps with that of the first flow guiding section 601. This enhances the stability of the connection between the first flow guiding section 601 and the second flow guiding section 602.

[0092] By directly setting the end of the second guide section 602 connected to the first guide section 601 to a shape with a preset curvature, the second guide section 602 and the first guide section 601 can be directly connected, saving the materials required for connection using other components.

[0093] Figure 8 This is a schematic diagram of the internal structure of an air outlet volute according to an exemplary embodiment. Figure 3 ,like Figure 8 As shown, the fresh air module includes:

[0094] A connector 801 is located between two adjacent flow guides and is used to establish a connection between the two adjacent flow guides, wherein the connector has the preset curvature.

[0095] Here, adjacent flow guides are separated, meaning they do not contact each other, but are connected by a connector, thus establishing a connection between adjacent flow guides. The connector has a preset curvature. By using a connector to establish the connection between adjacent flow guides, if adjustment is needed for a specific flow guide in the flow guide structure 104, the adjustment can be completed by replacing that single flow guide and the connector, without needing to adjust multiple flow guides in the flow guide structure 104.

[0096] Figure 9 This is a schematic diagram of the structure of an air inlet housing according to an exemplary embodiment, such as... Figure 9 As shown, at least a portion of the outer wall of the air inlet housing 101 is recessed toward the air outlet volute 102, forming a recessed portion 901;

[0097] The recessed portion 901 is located near the air outlet of the air outlet volute 102.

[0098] In this embodiment of the present disclosure, driven by the fan assembly inside the air outlet volute 102, the external airflow flows into the air inlet housing 101 through the air inlet of the air inlet housing 101 and flows circumferentially in the air inlet channel of the air inlet housing 101; the airflow distribution is less and the air pressure is lower in the area inside the air inlet housing 101 near the air outlet of the air outlet volute 102, and there is a large air pressure difference between this area and other areas of the air inlet housing 101, making it easier for airflow to backflow in this area.

[0099] In order to compensate for the low pressure area inside the air inlet housing 101, in this embodiment of the present disclosure, a recess 901 can be formed on the outer wall of the air inlet housing 101, and the position of the recess 901 corresponds to the low pressure area of ​​the air inlet housing 101, that is, the recess 901 is close to the air outlet of the air outlet volute 102.

[0100] In this embodiment, since the recessed portion 901 of the air inlet housing 101 is recessed towards the air outlet volute 102, the flow space available for airflow at the location of the recessed portion 901 is reduced. With the airflow distribution inside the air inlet housing 101 remaining unchanged, by reducing the flow space in the low-pressure area, the air pressure in the low-pressure area is increased, thereby reducing the air pressure difference between the low-pressure area and other areas inside the air inlet housing 101. This reduces the backflow of airflow at the air outlet of the air outlet volute 102, thereby improving the working efficiency of the fan assembly.

[0101] Figure 10 This is a schematic diagram of the exploded structure of a fresh air module according to an exemplary embodiment. Figure 2 ,like Figure 10 As shown, the fresh air module includes:

[0102] The filter assembly 1001 is located between the air inlet channel and the air outlet channel and is configured to filter the airflow flowing through the air inlet channel to the air outlet channel.

[0103] In this embodiment of the present disclosure, the filter assembly 1001 is disposed between the air inlet channel and the air outlet channel, so that the airflow flowing into the air inlet channel through the air inlet of the air inlet housing 101 will flow through the filter assembly 1001 as it flows toward the air outlet volute 102. The filter assembly 1001 can be used to filter the airflow flowing through the air inlet channel to the air outlet channel.

[0104] It should be noted that there are certain impurities such as dust, dust mites, and particulate matter in the air. The filter component 1001 can filter the air transmitted by the air inlet housing 101 before transmitting it to the air outlet housing 102. In this way, the quality of the airflow flowing out of the air outlet of the air outlet housing 102 can be improved, thereby improving the air quality of the space where the fresh air module is located.

[0105] In some embodiments, the filter assembly 1001 may include a filter screen and a mounting structure for fixing the filter screen.

[0106] The filter screen can filter, remove dust, or disinfect the air, thereby improving the cleanliness of the air entering the fresh air module. In some embodiments, the filter screen can be an electrostatic precipitator, a high-efficiency particulate air filter (HEPA filter), an activated carbon filter, etc., and no specific limitation is made here. Here, the filter screen is a detachable structure, and as a consumable, it can be replaced according to the user's needs to ensure the filtration effect on outdoor air.

[0107] In some embodiments, the mounting structure can be disposed within the air inlet housing 101 or the air outlet volute 102, and located between the air inlets of the air inlet housing 101 and the air outlet volute 102; here, the mounting structure can be a mounting groove disposed on the inner wall of the air inlet housing 101 or the air outlet volute 102 for inserting and installing the filter screen, thereby facilitating the installation and removal of the filter screen, and the filter assembly 1001 can be more conveniently applied to the fresh air module.

[0108] In this embodiment of the disclosure, the filter component 1001 can be used to filter the airflow entering the fresh air module, thereby improving the air quality of the space where the fresh air module is located.

[0109] This disclosure also provides an air conditioner, which includes an indoor unit and an outdoor unit used in conjunction with the indoor unit. The indoor unit includes a fresh air module, which can be the fresh air module described in any of the above embodiments.

[0110] It should be understood that the phrase "an embodiment" or "one embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this disclosure. Therefore, "in one embodiment" or "one embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of this disclosure, the sequence numbers of the above-described processes do not imply a sequential order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this disclosure. The sequence numbers of the above-described embodiments are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0111] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0112] In the several embodiments provided in this disclosure, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components may be combined, or integrated into another system, or some features may be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0113] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units. They may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.

[0114] In addition, each functional unit in the various embodiments of this disclosure can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0115] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0116] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A fresh air module, characterized in that, The fresh air module includes: An air inlet housing, wherein an air inlet channel is formed inside the air inlet housing; An air outlet volute is connected to the air inlet housing, and an air outlet channel is formed inside the air outlet volute, which is connected to the air inlet channel; A fan assembly, located inside the outlet volute, is used to drive airflow from the inlet channel to the outlet channel; A flow guiding structure is formed around the connection between the air outlet channel and the air inlet channel. The portion of the flow guiding structure near the air outlet of the air outlet volute is recessed toward the air outlet of the air outlet volute. At least a portion of the outer wall of the air inlet housing is recessed toward the air outlet volute, forming a recessed portion; wherein the recessed portion is close to the air outlet of the air outlet volute.

2. The fresh air module according to claim 1, characterized in that, The flow guiding structure is formed by connecting at least two flow guiding parts, and the flow guiding part near the air outlet of the air outlet volute is recessed toward the air outlet of the air outlet volute.

3. The fresh air module according to claim 2, characterized in that, Each of the aforementioned flow guides has an arc-shaped structure, and the axis of each of the aforementioned flow guides is the same.

4. The fresh air module according to claim 3, characterized in that, The fresh air module includes: The volute tongue is located at the air outlet of the air outlet volute. The axial radius of the guide section near the volute tongue is greater than the axial radius of the guide section away from the volute tongue, and the axial radius of each guide section is smaller than the radius of the impeller of the wind turbine assembly.

5. The fresh air module according to claim 3, characterized in that, The central angle of the guide section near the air outlet of the air outlet volute is greater than or equal to 10 degrees and less than or equal to 180 degrees.

6. The fresh air module according to claim 3, characterized in that, The connection between two adjacent flow guides has a preset curvature; The preset curvature is determined based on the curvature of two adjacent guide sections.

7. The fresh air module according to claim 6, characterized in that, The two adjacent flow guides include: First guide section; The second guide section has the preset curvature at one end where it is connected to the first guide section. The axial radius of the second guide section is smaller than that of the first guide section.

8. The fresh air module according to claim 6, characterized in that, The fresh air module includes: A connector, located between two adjacent flow guides, is used to establish a connection between the two adjacent flow guides, wherein the connector has the preset curvature.

9. The fresh air module according to claim 1, characterized in that, The fresh air module includes: A filter assembly, located between the air inlet channel and the air outlet channel, is configured to filter the airflow flowing through the air inlet channel to the air outlet channel.

10. An air conditioner, characterized in that, include: Air conditioner indoor unit; The outdoor unit of the air conditioner is used in conjunction with the indoor unit of the air conditioner; The indoor unit of the air conditioner includes: a fresh air module as described in any one of claims 1 to 9.

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