Air outlet switching mechanism for fresh air module, fresh air module and air conditioner

Abstract

The application relates to the technical field of indoor fresh air replacement, and discloses an air outlet switching mechanism for a fresh air module, which comprises a switching shell, a switching air cavity, a switching air inlet, a first switching air outlet and a second switching air outlet which are in communication with the switching air cavity, and a wind blocking assembly which comprises a wind blocking block and a wind blocking motor and is in driving connection with the wind blocking block and is configured to drive the wind blocking block to move between a first rotating position and a second rotating position; when the wind blocking block is located at the first rotating position, the first switching air outlet is shielded, and the switching air inlet and the second switching air outlet are in communication; and when the wind blocking block is located at the second rotating position, the second switching air outlet is shielded, and the switching air inlet and the first switching air outlet are in communication. The air outlet switching mechanism disclosed in the embodiment of the application can effectively reduce the number of air outlet ports of the fresh air module and reduce the structural complexity of the fresh air module. The application further discloses a fresh air module and an air conditioner.

Description

Technical Field

[0001] This application relates to the field of indoor air exchange technology, such as an air outlet switching mechanism for a fresh air module, a fresh air module, and an air conditioner. Background Technology

[0002] As people pay increasing attention to air quality, users are demanding higher standards for air quality in their living rooms, bedrooms, and other everyday spaces. Many factors can cause indoor air quality to decline. These include air pollutants such as formaldehyde, benzene, and ammonia emitted from interior decoration materials, or the accumulation of harmful gases like carbon dioxide and formaldehyde due to poor air circulation caused by closed doors and windows at night. These air quality problems can affect the health of residents to varying degrees, causing discomfort such as chest tightness, shortness of breath, dry mouth, and difficulty breathing.

[0003] One effective way to solve the aforementioned air quality problems is to maintain ventilation between indoors and outdoors, bringing fresh outdoor air into the indoor environment to increase the oxygen content and reduce the concentration of air pollutants. In this context, "fresh air conditioning" products have emerged. Fresh air conditioning systems add fresh air modules and ductwork to traditional air conditioning units, using a fan to draw fresh outdoor air into the indoor environment, thereby improving indoor air quality.

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

[0005] In related product designs, a fresh air module solution is also provided. This module can achieve two air supply methods: introducing fresh air into the room and expelling stale air to the outside. Since the air supply directions of the two methods are completely opposite, existing fresh air modules need to have multiple independent air outlet ports (and ducts) on the module's outlet side to serve as the outlet paths for different air supply methods. This leads to problems such as an excessive number of ports and structural complexity in the fresh air module.

[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 an air outlet switching mechanism for a fresh air module, a fresh air module, and an air conditioner, to solve the technical problem of complex structural design for different air outlet paths in the related art.

[0009] According to an embodiment of the first aspect of this application, an air outlet switching mechanism for a fresh air module is provided, comprising:

[0010] The switching housing has an internal structure including a switching air chamber, a switching air inlet, a first switching air outlet, and a second switching air outlet that communicate with the switching air chamber.

[0011] The air block assembly includes an air block block and an air block motor, wherein the air block block is rotatably disposed within a switching air chamber; the air block motor is drivenly connected to the air block block and is configured to drive the air block block to move between at least a first rotation position and a second rotation position.

[0012] Specifically, when the wind block is in the first rotation position, it blocks the first switching air outlet, and the switching air inlet is connected to the second switching air outlet; and when the wind block is in the second rotation position, it blocks the second switching air outlet, and the switching air inlet is connected to the first switching air outlet.

[0013] In some alternative embodiments, the switching air inlet, the first switching air outlet, and the second switching air outlet are arranged at intervals on the switching housing along the outer periphery of the rotation axis of the air block.

[0014] In some optional embodiments, the switching air cavity includes a circular cavity with arc-shaped openings on its outer periphery corresponding to the switching air inlet, the first switching air outlet, and the second switching air outlet, respectively.

[0015] The air block includes:

[0016] The central rotating shaft is coaxially located at the center of the circular cavity and is connected to the air plug motor drive.

[0017] The windproof baffle is fixedly connected to the central rotating shaft. The windproof baffle is constructed as an arc-shaped plate extending along the circumference of the circular cavity, and the curvature of the windproof baffle is greater than or equal to the curvature of each arc-shaped opening, so that any arc-shaped opening can be blocked during rotation.

[0018] In some alternative embodiments, the wind block also includes a support plate for connecting the central pivot and the wind block baffle.

[0019] The support plate is constructed as a fan-shaped sheet extending radially along the circular cavity, with its arc edge fixedly connected to the wind block baffle and its arc center fixedly connected to the central rotating shaft.

[0020] In some alternative embodiments, there is one support plate, which is fixed to one end of the central pivot.

[0021] There are two support plates, which are symmetrically fixed at both ends of the central rotating shaft.

[0022] In some alternative embodiments, the motor housing of the air block motor is provided with a fixing lug, and the fixing lug has screw holes; the outer wall of the circular cavity is provided with a fixing seat, and the air block motor is assembled into the circular cavity through the fixing lug and the fixing seat.

[0023] According to an embodiment of the second aspect of this application, a fresh air module is provided, including the air outlet switching mechanism as described in any of the embodiments of the first aspect above.

[0024] In some alternative embodiments, the fresh air module includes:

[0025] The module housing has an air inlet cavity and a second indoor air outlet located on the air outlet side of the air inlet cavity;

[0026] The sewage duct has an indoor outlet on the indoor side and an outdoor outlet on the outdoor side;

[0027] The switching air inlet of the air outlet switching mechanism is connected to the air outlet side of the air inlet chamber, the first switching air outlet is connected to the indoor pipe opening of the sewage duct, and the second switching air outlet is connected to the second indoor air outlet.

[0028] In some alternative embodiments, the exhaust duct and the indoor air outlet are spaced apart;

[0029] The switching air chamber also includes an expansion chamber that extends from the circular chamber toward the sewage duct to connect the indoor duct opening of the circular chamber and the sewage duct.

[0030] According to an embodiment of the third aspect of this application, an air conditioner is provided, including an air conditioning unit; and a fresh air module as described in any of the embodiments of the second aspect above.

[0031] The air outlet switching mechanism, fresh air module, and air conditioner provided in this disclosure can achieve the following technical effects:

[0032] The air outlet switching mechanism for the fresh air module in this embodiment has two switching air outlets and a shared switching air inlet. The switching air inlet can be used to connect to the air outlet side of the fresh air module, and the two switching air outlets can be used to connect to different air outlet paths. Thus, by switching the air plug assembly, the switching air inlet can be connected to one of the two switching air outlets. The shared switching air inlet design effectively reduces the number of air outlet ports on the fresh air module, lowering the structural complexity of the fresh air module.

[0033] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0034] 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:

[0035] Figure 1 This is a schematic diagram of the overall structure of a fresh air module provided in one embodiment of the present disclosure;

[0036] Figure 1a This is a schematic diagram of the disassembled structure of a fresh air module provided in an embodiment of this disclosure;

[0037] Figure 2 This is a schematic diagram of the overall structure of the module housing provided in an embodiment of this disclosure;

[0038] Figure 2a This is a disassembled schematic diagram of the module housing provided in one embodiment of the present disclosure from a first-view perspective;

[0039] Figure 2b This is a disassembled schematic diagram of the module housing provided in one embodiment of the present disclosure from a second perspective;

[0040] Figure 3a This is a schematic cross-sectional view of the air inlet cavity provided in an embodiment of the present disclosure;

[0041] Figure 3b This is a schematic diagram of the disassembled structure of the air inlet cavity provided in an embodiment of this disclosure;

[0042] Figure 3c This is a schematic diagram of the structure of the air outlet cavity wall provided in one embodiment of the present disclosure;

[0043] Figure 3d This is an assembly diagram of a partition plate provided in one embodiment of the present disclosure;

[0044] Figure 3e This is a schematic diagram of the structure of a partition plate provided in yet another embodiment of this disclosure;

[0045] Figure 4 This is a schematic diagram of the structure of an air filter element provided in an embodiment of the present disclosure;

[0046] Figure 4a This is a schematic diagram of the disassembled structure of an air filter element provided in an embodiment of this disclosure;

[0047] Figure 4b This is an external schematic diagram of the air inlet cavity provided in yet another embodiment of this disclosure;

[0048] Figure 4c This is a schematic diagram of the structure of a slot provided in an embodiment of the present disclosure;

[0049] Figure 4d This is a schematic diagram of the structure of the air outlet cavity wall provided in another embodiment of this disclosure;

[0050] Figure 5 This is a schematic diagram of the structure of a fan cavity provided in an embodiment of this disclosure;

[0051] Figure 5a This is a schematic diagram of the disassembled structure of the fan cavity provided in an embodiment of this disclosure;

[0052] Figure 5b This is a cross-sectional schematic diagram of a fan cavity provided in an embodiment of this disclosure;

[0053] Figure 5c This is a schematic diagram of the structure of a fan volute provided in an embodiment of the present disclosure;

[0054] Figure 5d This is a schematic diagram of the structure of the first volute air outlet provided in an embodiment of this disclosure;

[0055] Figure 5e This is a schematic diagram of the structure of the second volute air outlet provided in an embodiment of this disclosure;

[0056] Figure 6 This is a schematic diagram of the structure of an impeller provided in an embodiment of this disclosure;

[0057] Figure 7 This is a schematic diagram of the airflow direction inside the fan cavity provided in an embodiment of the present disclosure;

[0058] Figure 8 This is a schematic diagram of the axial projection of the partition plate relative to the direction of the fan casing according to an embodiment of the present disclosure;

[0059] Figure 9 This is a schematic diagram of the outdoor air vent of a module housing provided in one embodiment of the present disclosure;

[0060] Figure 10 This is a schematic diagram of the indoor return air vent of the module housing provided in an embodiment of this disclosure;

[0061] Figure 11 This is a schematic diagram of the second sidewall of the air inlet cavity provided in an embodiment of the present disclosure;

[0062] Figure 12 This is a schematic diagram of the structure of a fresh air duct provided in one embodiment of the present disclosure;

[0063] Figure 13 This is a schematic diagram of the structure of a duct body provided in an embodiment of this disclosure;

[0064] Figure 13a This is a cross-sectional schematic diagram of a duct body provided in an embodiment of this disclosure;

[0065] Figure 13b This is a cross-sectional schematic diagram of the duct body provided in yet another embodiment of this disclosure;

[0066] Figure 14 This is a schematic diagram of the structure of a pipe fitting provided in an embodiment of this disclosure;

[0067] Figure 14a This is a cross-sectional schematic diagram of a pipe fitting provided in an embodiment of this disclosure;

[0068] Figure 15 This is an assembly diagram of the pipe connector, module housing, and air outlet switching part provided in one embodiment of the present disclosure;

[0069] Figure 16 This is a schematic diagram of the structure of an integrated switching unit provided in an embodiment of this disclosure;

[0070] Figure 16a This is an assembly diagram of the integrated switch unit and the module housing provided in an embodiment of the present disclosure;

[0071] Figure 17a This is a schematic diagram of a wind deflector in a first sliding position according to an embodiment of the present disclosure;

[0072] Figure 17b This is a schematic diagram of a wind deflector in a second sliding position according to an embodiment of the present disclosure;

[0073] Figure 17c This is a schematic diagram of a wind deflector in a third sliding position according to an embodiment of the present disclosure;

[0074] Figure 18 This is a schematic diagram of the structure of an air outlet switching unit provided in an embodiment of the present disclosure;

[0075] Figure 18a This is a cross-sectional structural schematic diagram of an air outlet switching section provided in an embodiment of this disclosure;

[0076] Figure 18b This is a disassembled structural diagram of the air outlet switching unit provided in an embodiment of the present disclosure;

[0077] Figure 19 This is a schematic diagram of the structure of a windblock assembly provided in an embodiment of this disclosure;

[0078] Figure 19a This is a schematic diagram of the structure of an air block provided in an embodiment of this disclosure;

[0079] Figure 19b This is an assembly diagram of the airlock motor and the switching housing provided in one embodiment of the present disclosure;

[0080] Figure 20a This is a schematic diagram of the air block in a first rotational position according to an embodiment of the present disclosure;

[0081] Figure 20b This is a schematic diagram of the air block in a second rotational position according to an embodiment of the present disclosure;

[0082] Figure 21 This is an external schematic diagram of a switching housing provided in an embodiment of this disclosure;

[0083] Figure 21a This is a cross-sectional schematic diagram of a switching housing provided in an embodiment of this disclosure;

[0084] Figure 22 This is an assembly diagram of the air outlet switching unit, module housing, and fresh air duct provided in an embodiment of this disclosure;

[0085] Figure 23a This is a schematic diagram of the airflow direction of the air inlet cavity in a new air mode provided in an embodiment of this disclosure;

[0086] Figure 23b This is a schematic diagram of the airflow direction of the blower chamber and the air outlet switching section in a new wind mode provided in an embodiment of this disclosure;

[0087] Figure 23c This is a schematic diagram of the airflow direction of the fresh air duct in a fresh air mode provided in an embodiment of this disclosure;

[0088] Figure 24a This is a schematic diagram of the airflow direction of the air inlet cavity in a bidirectional ventilation mode according to an embodiment of the present disclosure;

[0089] Figure 24b This is a schematic diagram of the airflow direction of the fan chamber and the air outlet switching section in a bidirectional ventilation mode provided in an embodiment of the present disclosure;

[0090] Figure 24c This is a schematic diagram of the airflow direction of the fresh air duct in a bidirectional ventilation mode provided in an embodiment of this disclosure;

[0091] Figure 25a This is a schematic diagram of the airflow direction of the air inlet cavity in the full return air mode provided in an embodiment of this disclosure;

[0092] Figure 25b This is a schematic diagram of the airflow direction of the fan chamber and the air outlet switching section in a full return air mode provided in an embodiment of this disclosure;

[0093] Figure 25c This is a schematic diagram of the airflow direction of the fan chamber and the air outlet switching section in a full return air mode provided in another embodiment of this disclosure;

[0094] Figure 25d yes Figure 25c A schematic diagram of the airflow direction of the fresh air duct in the embodiment;

[0095] Figure 26 This is a schematic diagram of the external structure of an air conditioner provided in an embodiment of the present disclosure;

[0096] Figure 26a This is a schematic diagram of the internal structure of an air conditioner provided in one embodiment of the present disclosure.

[0097] Figure label:

[0098] 1. Fresh air module;

[0099] 10. Module housing; 11. Air inlet cavity; 1111. First side wall; 1112. Second side wall; 1113. Third side wall; 1114. Fourth side wall; 1115. Outer cavity wall; 1116. Air outlet cavity wall; 112. Air outlet of air inlet cavity; 113. Indoor return air inlet; 114. Outdoor air outlet; 115. First sub-air inlet cavity; 116. Second sub-air inlet cavity; 117. Socket; 118. Slot; 12. Fan cavity; 121. Fan volute; 1211. First volute section; 1212. Second volute section; 122. Impeller; 1221. Hub; 1222. Blade; 12 3. Volute air inlet; 124. First volute air outlet; 1241. First outer extension section; 1242. First volute tongue section; 125. Second volute air outlet; 1251. Second outer extension section; 1252. Second volute tongue section; 13. First air outlet duct; 14. Air filter element; 141. Filter element separator; 142. First filter element part; 143. Second filter element part; 15. Divider plate; 151. First arc plate section; 152. Second arc plate section; 153. Middle arc plate section; 154. First partition plate; 155. Second partition plate; 16. Divider rib; 171. First track; 172. Second track;

[0100] 20. Fresh air duct; 21. Duct body; 211. First duct body channel; 212. Second duct body channel; 213. Duct partition; 22. Pipe connector; 221. First connector channel; 222. Second connector channel; 223. Connector partition; 231. First duct channel; 2311. First fresh air outlet; 232. Second duct channel; 2321. Second fresh air outlet; 2322. Branch pipe outlet;

[0101] 30. Air outlet switching section; 31. Switching housing; 311. Switching air inlet; 312. First switching air outlet; 313. Second switching air outlet; 314. Circular cavity; 315. Fixing base; 32. Air block; 321. Central rotating shaft; 322. Air block baffle; 3221. Arc-shaped plate; 3222. Support plate; 33. Air block motor; 331. Fixing ear plate;

[0102] 40. Integrated switch unit; 41. Wind deflector; 42. Deflector rack; 43. Integrated drive motor; 44. Integrated gear;

[0103] 51. First indoor air outlet; 52. Second indoor air outlet;

[0104] 6. Air conditioner; 61. Indoor unit casing; 611. First casing air outlet; 612. Second casing air outlet; 613. Casing return air outlet; 62. Indoor heat exchanger. Detailed Implementation

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0111] This application provides a fresh air module 1, which can be applied to air conditioning equipment such as air conditioners (such as wall-mounted air conditioners), fresh air units, and dehumidifiers, so as to controllably realize the functions of separately introducing outdoor fresh air and separately expelling indoor stale air, and / or simultaneously introducing outdoor fresh air and expelling indoor stale air, thereby improving indoor air quality and enhancing environmental comfort.

[0112] like Figure 1 and 1a As shown, the fresh air module 1 mainly includes components such as a module housing 10, a fresh air duct 20, and an air outlet switching unit 30. The module housing 10 has an internal air cavity that defines the airflow path and serves as a space for accommodating components such as the air filter 14 and the fan impeller 122. The module housing 10 has an indoor air outlet for communication with the indoor side and an outdoor air outlet 114 for communication with the outdoor side. The indoor air outlet includes an indoor air outlet and / or an indoor return air outlet 113. The indoor air outlet serves as the outlet for supplying air from the fresh air module 1 to the indoor side, and the indoor return air outlet 113 serves as the outlet for air to return from the indoor side to the fresh air module 1. The outdoor air outlet 114 serves as the outlet for exhausting air from the fresh air module 1 to the outdoor side or for supplying fresh air from the outdoor side to the fresh air module 1. The fresh air duct 20 extends from the indoor side to the outdoor side, serving as a through-wall channel for introducing outdoor fresh air and / or exhausting indoor stale air. The fresh air duct 20 is connected to the air cavity of the module housing 10, thereby jointly defining the outdoor fresh air introduction path and / or the indoor stale air exhaust path. The air outlet switching unit 30 is located on the air outlet side of the module housing 10, used to define the air outlet direction of at least a portion of the airflow passing through the module housing 10. This at least a portion of the airflow includes outdoor fresh air or indoor stale air, and its outlet direction includes flowing towards the indoor side or the outdoor side, thereby enabling the functions of introducing outdoor fresh air and / or exhausting outdoor stale air.

[0113] In some alternative embodiments, combined with Figure 2 , 2aAs shown in Figure 2b, the air cavity of the module housing 10 includes an air inlet cavity 11 and a fan cavity 12, and the air inlet cavity 11 is connected to the fan cavity 12, allowing air to flow between the air inlet cavity 11 and the fan cavity 12. The air inlet cavity 11 can be used to house components such as a partition component and an air filter 14, and is connected to one or more of an indoor air vent and an outdoor air vent 114. The fan cavity 12 can be used to house components such as an impeller 122, and is connected to one or more of an indoor air vent and an outdoor air vent 114.

[0114] Optionally, the air inlet cavity 11 is located upstream of the air path relative to the fan cavity 12, meaning the fan cavity 12 is located on the air outlet side of the air inlet cavity 11, thus defining the airflow direction from the air inlet cavity 11 to the fan cavity 12 within the module housing 10. Alternatively, the air inlet cavity 11 is located downstream of the air path relative to the fan cavity 12, meaning the air inlet cavity 11 is located on the air outlet side of the fan cavity 12, thus defining the airflow direction from the fan cavity 12 to the air inlet cavity 11 within the module housing 10. The following explanation will primarily use the former structure, where the air inlet cavity 11 is located upstream of the fan cavity 12, as an example.

[0115] In some embodiments, combined with Figures 3a to 3e As shown, the air inlet cavity 11 includes a first sub-air inlet cavity 115 and a second sub-air inlet cavity 116, which are separated from each other. The first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 form relatively independent air paths. The air flowing into the air inlet cavity 11 is diverted to the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116, and continues to be delivered to the fan cavity 12 along their respective air paths. Optionally, the air inlet cavity 11 is provided with a partition component, which is used to divide the air inlet cavity 11 into the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116.

[0116] Optionally, the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 can each circulate air from the same air source. For example, the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 can simultaneously supply fresh outdoor air from the outside side, or simultaneously supply stale indoor air from the inside side. Alternatively, the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 can each circulate air from different air sources. For example, one of the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 can supply fresh outdoor air from the outside side, and the other can supply stale indoor air from the inside side. Here, the separating component can at least be used to separate the airflow paths when the two sub-air inlet chambers 11 supply air from different air sources, blocking or slowing down the mixing of air in different clean states.

[0117] Optionally, the overall outer contour of the air inlet cavity 11 has a flat cavity structure, which includes an outer cavity wall 1115, an air outlet cavity wall 1116, a first side wall 1111, a second side wall 1112, a third side wall 1113, and a fourth side wall 1114, as shown below. Figure 3a and 3b The outer cavity wall 1115 and the air outlet cavity wall 1116 are parallel and spaced apart. The first side wall 1111, the second side wall 1112, the third side wall 1113, and the fourth side wall 1114 are respectively located on the outer periphery of the space between the outer cavity wall 1115 and the air outlet cavity wall 1116. The outer cavity wall 1115, the air outlet cavity wall 1116, the first side wall 1111, the second side wall 1112, the third side wall 1113, and the fourth side wall 1114 together form the aforementioned air inlet cavity 11. Here, the two transverse sides (long sides) of each of the first side wall 1111, the second side wall 1112, the third side wall 1113, and the fourth side wall 1114 are connected to the corresponding sides of the outer cavity wall 1115 and the air outlet cavity wall 1116, respectively, and the two longitudinal sides (short sides) are connected to the short sides of the adjacent other side walls.

[0118] In an embodiment, the first sidewall 1111 and the second sidewall 1112 are disposed opposite to each other, and the third sidewall 1113 and the fourth sidewall 1114 are disposed opposite to each other. For example, in combination with Figure 2b and 3b As shown, the first sidewall 1111 is located at the top of the air inlet cavity 11, and is configured as the top surface of the air inlet cavity 11; the second sidewall 1112 is located at the bottom of the air inlet cavity 11, and is configured as the bottom surface of the air inlet cavity 11; the third sidewall 1113 is located at the front of the air inlet cavity 11, and is configured as the front side surface of the air inlet cavity 11; the fourth sidewall 1114 is located at the rear of the air inlet cavity 11, and is configured as the rear side surface of the air inlet cavity 11. In this example, the outer cavity wall 1115 serves as the left side surface of the air inlet cavity 11, and the air outlet cavity wall 1116 serves as the right side surface of the air inlet cavity 11.

[0119] Optionally, one or more of the first sidewall 1111, the second sidewall 1112, the third sidewall 1113, and the fourth sidewall 1114 are straight plate surfaces, for example... Figure 3a and 3b The third sidewall 1113 and the fourth sidewall 1114 shown are both straight plate surfaces. Alternatively, one or more of the first sidewall 1111, the second sidewall 1112, the third sidewall 1113, and the fourth sidewall 1114 may be non-straight plate surfaces, for example... Figure 2b and 3b The first sidewall 1111 and the second sidewall 1112 shown are plate surfaces composed of multiple straight surface parts and / or curved surface parts spliced ​​together.

[0120] In this embodiment, some sidewalls are designed as non-linear plate surfaces, which allows for a tighter fit between the air inlet cavity 11 and other components of the fresh air module 1, thereby reducing the number of air leakage gaps and lowering airflow resistance. For example, the arc-shaped portion of the first sidewall 1111 is adapted to the volute curve of the fan cavity 12, making its connection with the corresponding position of the fan cavity 12 tighter and improving airtightness.

[0121] In some alternative embodiments, the first sidewall 1111, the second sidewall 1112, the third sidewall 1113, the fourth sidewall 1114 and the outer cavity wall 1115 are an integral structure, thereby reducing the existence of air leakage gaps and improving the sealing performance of the air inlet cavity 11.

[0122] In the embodiments, combined with Figure 3c As shown, an air inlet outlet 112 is provided on the air outlet cavity wall 1116, and the air inlet cavity 11 is connected to the fan cavity 12 through the air inlet outlet 112. In this embodiment, the location and coverage of the air inlet outlet 112 should at least cover the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116, so that the air flowing through the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 can flow to the fan cavity 12 through the air inlet outlet 112.

[0123] Optionally, the air inlet outlet 112 is constructed as a regular shape such as circular, elliptical, square, or trapezoidal, or other irregular shapes. Here, the specific shape and size of the air inlet outlet 112 can be set according to actual needs, and this application does not impose any restrictions on this.

[0124] Alternatively, the air inlet 112 is provided with an air outlet grille, which can not only intercept large debris (such as stones, paper balls, lint, etc.), but also provide isolation and protection, so that when the user replaces the air filter 14, their fingers will not be accidentally inserted into the fan cavity 12, and they will be cut by the blades 1222 of the impeller 122.

[0125] For example, the air outlet grille includes one or more circumferential grille strips and one or more radial grille strips. The circumferential grille strips are coaxially arranged with gradually increasing radii, and are radially spaced from the inside out on the same plane, which is the plane where the air inlet outlet 112 is located. Each radial grille strip has one end connected to the central axis of the air inlet outlet 112, and the other end extending radially outward. The radial grille strips are radially spaced at the air inlet outlet 112 and intersect with the circumferential grille strips. Thus, the circumferential and radial grille strips are arranged alternately to achieve the function of interception and filtration.

[0126] In some alternative embodiments, combined with Figure 3a and3b As shown, the partition component includes a partition plate 15, which is disposed inside the air inlet cavity 11 and extends from one side wall of the air inlet cavity 11 to the other opposite side wall. Optionally, the partition plate 15 extends longitudinally from the first side wall 1111 to the second side wall 1112, that is, the longitudinal top end of the partition plate 15 is connected to the first side wall 1111 and the longitudinal bottom end is connected to the second side wall 1112; at the same time, the partition plate 15 extends laterally from the outer cavity wall 1115 to the air outlet cavity wall 1116. Thus, the air inlet cavity 11 is divided into two air inlet sections arranged front and back in space, namely the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 mentioned above.

[0127] For example, in combination Figure 3c and 3d As shown, the first sub-air inlet cavity 115 is located in the front space area of ​​the air inlet cavity 11, and is formed by the third side wall 1113, the front side of the partition plate 15, and the outer cavity wall 1115, the air outlet cavity wall 1116, the first side wall 1111 and the second side wall 1112, each of which are located near the front side. The second sub-air inlet cavity 116 is located in the rear space area of ​​the air inlet cavity 11, and is formed by the fourth side wall 1114, the back side of the partition plate 15, and the outer cavity wall 1115, the air outlet cavity wall 1116, the first side wall 1111 and the second side wall 1112, each of which are located near the rear side.

[0128] In this embodiment, the plate extends laterally to the air outlet wall 1116, which also divides the air inlet outlet 112 into a first sub-air outlet and a second sub-air outlet. The first sub-air inlet 115 is connected to the first sub-air outlet, and the second sub-air inlet 116 is connected to the second sub-air outlet.

[0129] Optionally, from the longitudinal cross-sectional view of the partition plate 15, the plate shape of the partition plate 15 can be constructed as a straight line, a curve, a broken line, or a plate form composed of one or more straight lines and / or one or more curved segments. Here, the plate shape of the partition plate 15 can be adjusted according to factors such as the cavity volume distribution and wind resistance within the air inlet cavity 11. For example, if the cavity volume of the first sub-air inlet cavity 115 needs to be greater than that of the second sub-air inlet cavity 116, the partition plate 15 can be constructed as a curved or broken line shape with its plate surface protruding from the second sub-air inlet cavity 116 to increase the space actually allocated to the first sub-air inlet cavity 115. Alternatively, if the cavity volumes of the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 need to be approximately equal, the partition plate 15 can be constructed as a straight line and positioned at the centerline of the air inlet cavity 11 to achieve an equal distribution of space between the two sub-air inlet cavities 11.

[0130] In one embodiment, the cavity volume of the first sub-air inlet cavity 115 is greater than or equal to the cavity volume of the second sub-air inlet cavity 116, so that in the bidirectional air exchange mode, the volume of outdoor fresh air delivered to the room through the first sub-air inlet cavity 115 is greater than the volume of outdoor stale air delivered to the outside through the second sub-air inlet cavity 116, thereby achieving a positive pressure air supply effect.

[0131] In some alternative embodiments, the fresh air module 1 further includes an air filter 14, which can be used to filter and purify the air flowing through the fresh air module 1 to reduce the content of air pollutants such as dust and PM2.5 in the air.

[0132] Optionally, the air filter 14 is disposed in either the air inlet chamber 11 or the fan chamber 12. For example, combined with Figure 4 , 4a As shown in Figure 4b, the air filter 14 is disposed in the air inlet chamber 11, and it can adsorb and intercept air pollutants as the airflow flows through the air inlet chamber 11. This not only effectively improves air quality, but also reduces the wear of the fan impeller 122 caused by large particles such as sand and gravel entering the fan chamber 12. In this embodiment, the air filter 14 is arranged close to the air outlet wall 1116 of the air inlet chamber 11 to better fit and cover the air outlet 112 of the air inlet chamber, so that most of the airflow flowing to the air outlet 112 of the air inlet chamber can be purified and filtered by the air filter 14.

[0133] The air filter 14 itself has an adsorption saturation limit. After prolonged use, the air filter 14 gradually reaches its maximum adsorption capacity, at which point it needs to be cleaned and replaced promptly. Therefore, in this embodiment, the air filter 14 is detachably installed in the fresh air module 1, allowing the user to easily install and remove it as needed. Optionally, the air filter 14 can be pulled out of the air inlet chamber 11, allowing the user to remove a dirty air filter 14 from the fresh air chamber or push a brand-new air filter 14 into it.

[0134] Optionally, an inlet 117 is provided on the outer wall of the air inlet cavity 11, through which the air filter element 14 can be moved into / out of the air inlet cavity 11. Referring to the previous embodiment, the outer wall for which the inlet 117 is located can be one of the outer cavity wall 1115, the first side wall 1111, the second side wall 1112, the third side wall 1113, and the fourth side wall 1114 of the air inlet cavity 11. Figure 4b As shown, the insertion port 117 is provided on the third side wall 1113 of the air inlet cavity 11. The third side wall 1113 is the side wall of the air inlet cavity 11 near the front and facing the user, so the position of the insertion port 117 allows the user to perform a pull-out operation more conveniently. In this embodiment, the shape and size of the insertion port 117 are adapted to the cross-sectional shape and size of the air filter element 14.

[0135] In the previous embodiment, the partition plate 15 extends laterally from the outer cavity wall 1115 to the air outlet cavity wall 1116. Therefore, the air filter 14 inserted into the air inlet cavity 11 is also on its lateral coverage path. To avoid structural interference between the partition plate 15 and the air filter 14, this embodiment also provides a slot 118 on the partition plate 15 for the air filter 14 to be pulled out. Using this slot 118, the partition plate 15 can avoid the air filter 14, allowing them to be arranged in the air inlet cavity 11 without interference. Figure 4c As shown.

[0136] Optionally, the vertical height of the slot 118 is greater than or equal to the vertical length of the air filter 14, and / or the axial width of the slot 118 is greater than or equal to the lateral length of the air filter 14. This ensures that the slot 118 does not obstruct the movement of air in and out.

[0137] In some alternative embodiments, the slot 118 is recessed along the axial direction of the air inlet cavity 11 from one side of the corresponding air outlet cavity wall 1116 of the partition plate 15, such as... Figure 4c The image shows an approximately U-shaped slot. In an embodiment, the slot shape of the slot 118 is adapted to the cross-sectional shape of the air filter element 14 to reduce the air leakage gap formed between the edge of the slot 118 and the air filter element 14. For example, the cross-sectional shape of the air filter element 14 is rectangular, and correspondingly, the slot shape of the slot 118 is also constructed as a rectangular groove.

[0138] Optionally, the groove depth of slot 118 is less than or equal to half the axial length of partition plate 15. For example, the groove depth of slot 118 can be set to 1 / 3, 1 / 4, etc., of the axial length of partition plate 15. This ensures that the groove size is not too large and affects the structural strength of partition plate 15 itself. At the same time, since the air filter 14 has free airflow and does not have a spatial separation function, limiting the groove depth of slot 118 can also reduce the adverse effect of air filter 14 on the spatial separation effect of air inlet cavity 11. For example, if the groove depth of slot 118 is l and the axial length of partition plate 15 is L, then the dimensional design requirement of I ≤ L / 2 must be met.

[0139] In some embodiments, the air outlet wall 1116 of the air inlet cavity 11 is provided with a partition rib 16. The partition rib 16 protrudes from the wall surface of the air outlet wall 1116 toward the outer cavity wall 1115, and can cooperate with the partition plate 15 to form a slot 118. Figure 4d As shown.

[0140] Combination Figure 4c and 4dThe slots 118 formed in the partition plate 15 correspond to one horizontal side and two vertical sides of the air filter element 14, and the partition ribs 16 correspond to the other horizontal side of the air filter element 14. In this way, the partition ribs 16 can effectively enhance the tightness of the fit between the air filter element 14 and one side of the air outlet cavity wall 1116, reduce the air leakage gap, and further improve the spatial separation effect of the air inlet cavity 11.

[0141] In this embodiment, the dividing rib 16 has the same linear shape as the dividing plate 15 and their positions coincide in the axial direction. This prevents additional protrusions in the airflow path between the dividing plate 15 and the dividing rib 16, ensuring a smooth and unobstructed flow and avoiding air resistance. For example, if the extending line of the dividing plate 15 is straight, the dividing rib 16 is adaptively constructed as a straight rib; or, if the extending line of the dividing plate 15 is curved, the dividing rib 16 is adaptively constructed as a curved rib.

[0142] In some alternative embodiments, the slot 118 is a channel structure formed by hollowing out along the thickness direction of the partition plate 15. Here, the slot 118 is formed in the middle of the partition plate 15 or on the side near the air outlet wall 1116, and it is formed through the partition plate 15 along the thickness direction.

[0143] In this embodiment, the slot 118 includes a first slot edge, a second slot edge, a third slot edge, and a fourth slot edge. The first slot edge is located near the first sidewall 1111, the second slot edge is located near the second sidewall 1112, the third slot edge is located near the outer cavity wall 1115, and the fourth slot edge is located near the air outlet cavity wall 1116. These four slot edges together form the slot 118 into which the air filter element 14 is inserted. Compared to the previous embodiment where the partition plate 15 and the partition rib 16 together form the slot 118, this embodiment eliminates the need for the partition rib 16 on the air outlet cavity wall 1116, simplifying the structure of the air inlet cavity 11.

[0144] In some embodiments, an elastic seal is provided on the inner periphery of the slot 118. The elastic seal can be used to seal the assembly gap between the slot 118 and the air filter 14, thereby reducing air leakage from the assembly gap. Optionally, the elastic seal is provided on the inner periphery of at least one side of the slot 118. For example, for... Figure 4c In the form of the slot 118 shown, the resilient seal can be provided on any edge of the U-shaped slot, and / or on the edge of the corresponding air filter element 14 of the partition rib 16.

[0145] Optionally, the resilient seal can be made of rubber strips, wool strips, or other similar materials. Furthermore, the resilient seal can be fixedly connected to the inner periphery of the slot 118 by means of adhesive bonding, snap-fitting, or other methods.

[0146] In some alternative embodiments, in order to make the air filter 14 move into / out of the air inlet cavity 11 more smoothly, the present application includes a slide assembly in the air inlet cavity 11 to define the pull-out trajectory of the air filter 14, the slide assembly being used to define the movement path of the air filter 14 relative to the air inlet cavity 11.

[0147] Optionally, the slide assembly includes a first track 171 and a second track 172, the interval between the first track 171 and the second track 172 being configured as a pull-out space for the air filter 14. Wherein, combined with Figure 3c and 4d As shown, the first track 171 is provided on the air outlet cavity wall 1116 and extends in the pulling direction. The first track 171 is located above the air inlet outlet 112 of the air inlet cavity and is used to limit the movement of the air filter element 14 above. The second track 172 is provided on the air outlet cavity wall 1116 and extends parallel to the first track 171. The second track 172 is located below the air inlet outlet 112 of the air inlet cavity and is used to limit the movement of the air filter element 14 below. The parallel arrangement of the first track 171 and the second track 172 allows the air filter element 14 to be pulled and moved along the straight trajectory defined by the two tracks.

[0148] For example, in combination Figure 4d As shown, the first track 171 is a first guide strip protruding from the air outlet wall 1116 toward the outer cavity wall 1115. This first guide strip extends longitudinally from the third side wall 1113 to the fourth side wall 1114, that is, from the front side of the air inlet cavity 11 to the back side. Similarly, the second track 172 is also a second guide strip protruding from the air outlet wall 1116 toward the outer cavity wall 1115, and this second guide strip also extends longitudinally from the third side wall 1113 to the fourth side wall 1114. After the air filter 14 is inserted into the air inlet cavity 11 through the insertion port 117 of the third side wall 1113, the top surface of the air filter 14 abuts against the lower surface of the first guide strip, and the bottom surface abuts against the upper surface of the second guide strip, which reduces the occurrence of misalignment of the air filter 14.

[0149] In the foregoing embodiments, the air filter element 14 may optionally be of the type including, but not limited to, a pre-filter, a high-efficiency filter, and an activated carbon filter. Those skilled in the art can select the appropriate filter type according to actual purification needs, and this application does not impose any limitations on this.

[0150] In some alternative embodiments, to further enhance the spatial separation effect of the air inlet cavity 11, a filter element separator 141 is provided inside the air filter element 14. The filter element separator 141 divides the filter element into two filter element portions corresponding to the two air inlet partitions (sub-air inlet cavities 11). Here, the filter element separator 141 can prevent air from flowing between the two filter element portions, such as... Figure 4a As shown.

[0151] Here, the overall outer contour of the filter element separator 141 is in the form of a flat strip. Its horizontal direction extends from the side of the air filter element 14 near the separator plate 15 to the side near the separator rib 16, and its vertical direction extends from the top surface of the air filter element 14 to the bottom surface.

[0152] Combination Figure 4a As shown, the filter element separator 141 divides the air filter element 14 into a first filter element portion 142 and a second filter element portion 143. The first filter element portion 142 is located on one side corresponding to the first sub-inlet chamber 115, and it is used to filter and purify the air flowing through the first sub-inlet chamber 115. The second filter element portion 143 is located on one side corresponding to the second sub-inlet chamber 116, and it is used to filter and purify the air flowing through the second sub-inlet chamber 116. Due to the separating effect of the filter element separator 141, air flowing through the first filter element portion 142 will not flow to the second filter element portion 143, and similarly, air flowing through the second filter element portion 143 will not flow to the first filter element portion 142, thereby preventing the air from the two sub-inlet chambers 11 from mixing in the air filter element 14.

[0153] Optionally, the filter element separator 141 has the same linear shape as the separator plate 15, and their positions coincide in the axial direction. In this way, the airflow path formed by the separator plate 15, filter element separator 141, and separator rib 16 will not form any additional protrusions, resulting in a smooth and unobstructed flow path and effectively reducing airflow resistance. For example, if the extension line of the separator plate 15 is straight, the filter element separator 141 is also constructed as a straight strip; or, if the extension line of the separator plate 15 is curved, the filter element separator 141 is also constructed as a curved strip. Here, the thickness of the separator plate 15, filter element separator 141, and separator rib 16 is basically the same to ensure the smoothness of the airflow path plane.

[0154] In some alternative embodiments, combined with Figures 5 to 5e As shown, the fan chamber 12 includes a fan volute 121 and an impeller 122. The impeller 122 is rotatably disposed inside the fan volute 121 and is used to generate driving force to drive airflow through the module housing 10. In this embodiment, the impeller 122 can at least drive air from the air inlet chamber 11 to the fan chamber 12.

[0155] In this embodiment, the fan casing 121 is configured as a detachable, modular structure, such as... Figure 5cAs shown, it includes a first volute portion 1211 and a second volute portion 1212. The detachable design allows for easy insertion and removal of the impeller 122 from the fan volute 121, facilitating assembly, replacement, and maintenance of the fan volute 121. Here, the first volute portion 1211 is located on the side near the air inlet cavity 11, and the second volute portion 1212 is located on the side of the air inlet cavity 11; the two together form the fan volute 121. Optionally, the first volute portion 1211 and the second volute portion 1212 can be fixed by snap-fit, screw-fit, riveting, etc., offering advantages such as strong connection and quick assembly / disassembly.

[0156] The fan volute 121 has a volute inlet 123, which communicates with the inlet outlet 112 of the inlet chamber 11, so that air enters the fan volute 121 sequentially through the inlet outlet 112 and the volute inlet 123. In this embodiment, the volute inlet 123 is formed on the first volute portion 1211, and the shape and size of the volute inlet 123 are adapted to the inlet outlet 112. For example, the outlet of the inlet chamber 11 is a circular air outlet, and correspondingly, the volute inlet 123 is also constructed as a circular air outlet.

[0157] Optionally, the first volute portion 1211 and the air outlet wall 1116 are an integral structure, meaning that the first volute portion 1211 and the air outlet wall 1116 are on opposite sides of the same housing, with the first volute portion 1211 corresponding to the impeller 122 and the air outlet wall 1116 corresponding to the air filter element 14. Furthermore, the air inlet outlet 112 of the air outlet wall 1116 and the volute inlet 123 of the first volute portion 1211 are also integrated into a single air outlet. This reduces the number of components in the module housing 10 and simplifies the overall structure.

[0158] In some embodiments, combined with Figure 6 As shown, the impeller 122 includes a hub 1221 and multiple blades 1222. The hub 1221 is constructed as a ring structure, and its internal space serves as the air inlet channel for the impeller 122. There are two hubs 1221, which are coaxially spaced apart, and the space between the two hubs 1221 serves as the space for accommodating the multiple blades 1222. Here, each blade 1222 is constructed as a strip-shaped structure, with its first end fixed to one of the hubs 1221 and its other end fixedly connected to the other hub 1221. Viewed from the axial projection direction of the hub 1221, each blade 1222 is equally spaced along the outer circumference of the hub 1221 and is inclined relative to the outer circumference of the hub 1221, so that after the air enters the air inlet channel axially from the impeller 122, it is driven by the blades 1222 to diffuse radially outward and enter the casing space of the fan volute 121.

[0159] Optionally, the impeller 122 has a first rotation direction or a second rotation direction, the first rotation direction and the second rotation direction being opposite in direction. In the axial direction from the air inlet chamber 11 to the fan chamber 12, the first rotation direction is that the airflow flows in a clockwise direction, and the second rotation direction is that the airflow flows in a counterclockwise direction.

[0160] In some optional embodiments, the module housing 10 has a first indoor air outlet 51 and / or a second indoor air outlet 52. The first indoor air outlet 51 and the second indoor air outlet 52 can be used to deliver air in different directions to achieve a multi-angle, wide-range air delivery effect.

[0161] Optionally, the first indoor air outlet 51 is used to supply air to one of the following directions: front, rear, top, bottom, left, or right of the fresh air module 1, and the second indoor air outlet 52 is used to supply air to the other of the following directions: front, rear, top, bottom, left, or right of the fresh air module 1. Figure 5 and 5a In the illustrated embodiment, the first indoor air outlet 51 is used to deliver air in a forward and upward direction, and the second indoor air outlet 52 is used to deliver air in a downward and forward direction.

[0162] In some alternative embodiments, the module housing 10 further includes a first air outlet duct 13 connected to the module housing 10 and located on the air outlet side of the air inlet cavity 11 (fan cavity 12). This first air outlet duct 13 forms a first indoor air outlet 51 as an air outlet path, through which the airflow from the air inlet cavity 11 (fan cavity 12) can be transported to the external environment. Similarly, the module housing 10 also includes a second air outlet duct connected to the module housing 10 and located on the air outlet side of the air inlet cavity 11 (fan cavity 12). This second air outlet duct forms a second indoor air outlet 52 as an air outlet path, through which the airflow from the air inlet cavity 11 (fan cavity 12) can be transported to the external environment.

[0163] In the above embodiments, the actual air supply direction can be adjusted by changing the extension direction of the first air outlet duct 13 (and the second air outlet duct) or the orientation of the air outlet end of the duct. For example, in the previous embodiment, the first indoor air outlet 51 is used to supply air in the forward and upward direction, so the corresponding first air outlet duct 13 can be extended in the forward and upward direction, and its air outlet end faces the forward and upward direction.

[0164] Here, the fan chamber 12 is located on the air outlet side of the air inlet chamber 11, and the first indoor air outlet 51 and the second indoor air outlet 52 are respectively connected to the fan chamber 12 through the fan chamber 12. In this embodiment, the first indoor air outlet 51 and the second indoor air outlet 52 are respectively connected to the outer peripheral shell wall of the fan volute 121, wherein the first indoor air outlet is connected to the top position of the outer peripheral shell wall, and the second indoor air outlet 52 is connected to the bottom position of the outer peripheral shell wall. When the impeller 122 rotates downwards inside the fan chamber 12, the air upstream of the first indoor air outlet 51 will preferentially concentrate and flow towards the first indoor air outlet 51, such as... Figure 7 The solid arrows shown indicate airflow; and the air swirling upstream of the second indoor air outlet 52 will preferentially concentrate and flow towards the second indoor air outlet 52, as... Figure 7 The dashed arrows in the image show the airflow.

[0165] In some embodiments, combined with Figure 5b and 5c As shown, the fan casing 121 has a first casing outlet 124 and a second casing outlet 125. The first casing outlet 124 is located at the top of the outer peripheral wall of the fan casing 121, connecting the fan casing 121 and the first indoor air outlet 51, so that at least a portion of the airflow within the fan casing 121 is transported to the first indoor air outlet 51 via the first casing outlet 124. The second casing outlet 125 is located at the bottom of the outer peripheral wall of the fan casing 121, connecting the fan casing 121 and the second indoor air outlet 52, so that at least a portion of the airflow within the fan casing 121 is transported to the second indoor air outlet 52 via the second casing outlet 125.

[0166] exist Figure 7 The impeller 122 is shown rotating downwards in the first direction. The first indoor air outlet 51 is positioned corresponding to the first sub-inlet chamber 115 and is located in the middle to lower reaches of the impeller 122's rotation direction. This means the airflow flowing into the fan casing 121 from the first sub-inlet chamber 115 is located in the middle to upper reaches of the first indoor air outlet 51. Consequently, the airflow passing through the first sub-inlet chamber 115 is biased towards the first indoor air outlet 51, resulting in most of this airflow being discharged through the first indoor air outlet 51. Similarly, the second indoor air outlet 52 is positioned corresponding to the second sub-inlet chamber 116 and is located in the middle to lower reaches of the impeller 122's rotation direction. This means the airflow flowing into the fan casing 121 from the second sub-inlet chamber 116 is located in the middle to upper reaches of the second indoor air outlet 52. Consequently, the airflow passing through the second sub-inlet chamber 116 is biased towards the second indoor air outlet 52, resulting in most of this airflow being discharged through the second indoor air outlet 52.

[0167] In this embodiment, the first volute outlet 124 includes a first outer extension 1241 away from the volute axis and a first volute tongue 1242 close to the volute axis. The first outer extension 1241 and the first volute tongue 1242 are spaced apart from each other, and the space between them serves as an airflow channel. Figure 5d As shown. Similarly, the second volute outlet 125 includes a second outer extension 1251 away from the volute axis and a second volute tongue 1252 close to the volute axis. The second outer extension 1251 and the second volute tongue are spaced apart from each other, and the space between them serves as an airflow channel, such as... Figure 5e As shown. Optionally, the range by which the first sub-inlet chamber 115 delivers airflow to the fan chamber 12 mainly covers the portion of the second volute tongue section 1252 to the first volute tongue section 1242 in the first spiral direction, such as... Figure 8 The area A shown in the diagram. The range from which the second sub-inlet chamber 116 delivers airflow to the fan chamber 12 mainly covers the portion from the first volute tongue section 1242 to the second volute tongue section 1252 in the first spiral direction, such as... Figure 8 The B range area is shown in the figure.

[0168] To achieve the division of the two air supply coverage areas mentioned above, correspondingly, in the axial projection of the partition plate 15 relative to the fan casing 121, the first longitudinal end (longitudinal top end) of the partition plate 15 extends to the casing wall near the first volute tongue section 1242, and the second longitudinal end (longitudinal bottom end) extends to the casing wall near the second volute tongue section 1252, as shown below. Figure 8 As shown.

[0169] In this embodiment, the partition plate 15 is formed by extending the plate body in a curved shape in the longitudinal direction, and the curvature of the curve corresponds to the air outlet direction of the first volute air outlet 124 and the second volute air outlet 125, thereby reducing the wind resistance and wind pressure loss during the airflow process through the partition plate 15.

[0170] Combination Figure 3e As shown, the partition plate 15 includes a first arc plate segment 151, a second arc plate segment 152, and an intermediate arc plate segment 153. In the axial projection of the partition plate 15 relative to the fan casing 121, the upper end of the first arc plate segment 151 extends to the casing wall near the first volute tongue segment 1242, and the lower end extends along the curvature of the first volute tongue segment 1242 toward the axis of the fan casing 121. Similarly, in the axial projection of the partition plate 15 relative to the fan casing 121, the lower end of the second arc plate segment 152 extends to the casing wall near the second volute tongue segment 1252, and the upper end extends along the curvature of the second volute tongue segment 1252 toward the axial direction of the fan casing 121. The two ends of the intermediate arc plate segment 153 are respectively connected to the extension ends of the first arc plate segment 151 and the second arc plate segment towards the axis, that is, respectively connected to the lower end of the first arc plate segment 151 and the upper end of the second arc plate segment 152.

[0171] In this embodiment, combined with Figure 8 As shown, the extension direction of the first arc plate segment 151 is adapted to the first volute tongue segment 1242, and the extension direction of the second arc plate segment 152 is adapted to the second volute tongue segment 1252, so that the airflow is smoother and more unobstructed as it flows through the air inlet cavity 11, the fan cavity 12 and finally splits to the first volute outlet 124 and the second volute outlet 125, reducing the resistance effect of the cavity wall on the airflow.

[0172] Optionally, the extended curve of the first arc segment can be a curve trajectory with the same curvature as the first volute tongue segment 1242, or a curve trajectory that forms an acute angle with the curve of the first volute tongue segment 1242. Similarly, the extended curve of the second arc segment can be a curve trajectory with the same curvature as the second volute tongue segment 1252, or a curve trajectory that forms an acute angle with the curve of the second volute tongue segment 1252. In addition, the curve trajectories of the first arc plate segment 151 and the second arc plate segment 152 each have a tendency to bend and extend towards the axis of the fan casing 121, rather than necessarily pointing towards that axis.

[0173] Optionally, the first arc plate segment 151, the second arc plate segment 152, and the middle arc plate segment 153 adopt an integrated structure, so that there are no air leakage gaps between the segments of the partition plate 15, thus improving the sealing performance of the air inlet cavity 11.

[0174] It should be understood that the extension direction of the partition plate 15 and the setting position of its two longitudinal endpoints in this embodiment are mainly determined based on factors such as the opening position of the two indoor air outlets and the rotation direction of the impeller 122. For example, in this embodiment, the two indoor air outlets are located on the upper and lower sides of the fan cavity 12, respectively, so the partition plate 15 extends vertically as a whole. When the arrangement position of the indoor air outlets changes, such as changing to front and rear side air outlets, the extension direction of the partition plate 15 must also be adjusted accordingly. Therefore, other modifications and adjustments to the opening position of the indoor air outlets and the form of the partition plate 15 based on the technical concept disclosed in this application and in combination with actual air supply needs should also be included within the protection scope of this application.

[0175] In some alternative embodiments, combined with Figure 9 As shown, the module housing 10 has an outdoor air vent 114 that connects the air inlet cavity 11 and the outdoor side. Specifically, the outdoor air vent 114 is connected to at least one of the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116, so that fresh outdoor air in the outdoor environment can be introduced into at least one of the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116.

[0176] Here, the number of sub-inlet cavities 11 connected to the outdoor air vent 114 is dynamically adjusted according to the working status of the fresh air module 1. For example, in the fresh air mode, the outdoor air vent 114 is connected to the first sub-inlet cavity 115 and the second sub-inlet cavity 116 at the same time. In the bidirectional air exchange mode, the outdoor air vent 114 is only connected to one of the first sub-inlet cavity 115 and the second sub-inlet cavity 116, and the other is not connected.

[0177] Optionally, the outdoor air vent 114 is formed on the cavity wall of the air inlet cavity 11 adjacent to the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116, so as to allow for switching and adjustment with various communication forms. For example, the outdoor air vent 114 may be formed on the outer cavity wall 1115, the first side wall 1111, or the second side wall 1112. Here, the common feature of the outer cavity wall 1115, the first side wall 1111, or the second side wall 1112 is that at least a portion of the wall surface of each side wall is located on the side adjacent to the first sub-air inlet cavity 115, and at least another portion of the wall surface is located on the side adjacent to the second sub-air inlet cavity 116. For example, in combination with Figure 9 As shown, the outdoor air inlet is located on the second side wall 1112 of the air inlet cavity 11, and is situated on the side closest to the first sub-air inlet cavity 115. In this embodiment, the fresh air mode is in a bidirectional ventilation mode, and the outdoor air inlet 114 is connected to the first sub-air inlet cavity 115 but not to the second sub-air inlet cavity 116.

[0178] Optionally, the shape of the outdoor air vent 114 may be constructed as a circle, rectangle, square, etc., and this application does not impose any restrictions on this.

[0179] In some alternative embodiments, combined with Figure 10 As shown, the module housing 10 has an indoor return air vent 113 that connects the air inlet chamber 11 and the indoor side. Specifically, the indoor return air vent 113 is connected to at least one of the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116, so that indoor stale air in the indoor environment can be introduced into at least one of the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116.

[0180] Here, the number of sub-inlet cavities 11 connected to the indoor return air vent 113 is dynamically adjusted according to the working status of the fresh air module 1. For example, in the bidirectional ventilation mode, the indoor return air vent 113 is only connected to one of the first sub-inlet cavities 115 and the second sub-inlet cavities 116, and the other is not connected; in the full return air mode, the indoor return air vent 113 is connected to both the first sub-inlet cavities 115 and the second sub-inlet cavities 116.

[0181] Optionally, the indoor return air vent 113 is formed on the cavity wall of the air inlet cavity 11 adjacent to the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116, so as to allow for switching and adjustment with various communication forms. For example, the indoor return air vent 113 may be formed on the outer cavity wall 1115, the first side wall 1111, or the second side wall 1112. Here, the common feature of the outer cavity wall 1115, the first side wall 1111, or the second side wall 1112 is that at least a portion of the wall surface of each side wall is located on the side adjacent to the first sub-air inlet cavity 115, and at least another portion of the wall surface is located on the side adjacent to the second sub-air inlet cavity 116. For example, in combination with Figure 11 As shown, the indoor return air vent 113 is located on the second side wall 1112 of the air inlet cavity 11, and is situated on the side closest to the second sub-air inlet cavity 116. In this embodiment, the fresh air mode is in the bidirectional ventilation mode, and the indoor return air vent 113 is connected to the second sub-air inlet cavity 116 but not to the first sub-air inlet cavity 115.

[0182] Optionally, the shape of the indoor return air vent 113 may be constructed as a circle, rectangle, square, etc., and this application does not impose any restrictions on this.

[0183] In some optional embodiments, the fresh air module 1 further includes a return air switch unit disposed at the indoor return air inlet 113, which is used to controllably close or open the indoor return air inlet 113. Optionally, the return air switch unit is configured to close the indoor return air inlet 113 at least in the fresh air mode, so that indoor stale air on the indoor side will not be introduced into the air intake cavity 11 in the fresh air mode; and to open the indoor return air inlet 113 in the bidirectional ventilation mode, so that indoor stale air on the indoor side flows into the air intake cavity 11 through the indoor return air inlet 113 under the drive of the negative pressure wind force of the impeller 122.

[0184] Here, the return air switch includes a return air damper and a first driver. The return air damper is driven to connect with the first driver, so that the return air damper is driven to close or open the indoor return air vent 113.

[0185] Optionally, a return air baffle is slidably disposed at the indoor return air vent 113 relative to the second sidewall 1112. A first rack is provided on one side of the return air baffle, and the first rack extends longitudinally along the side. The first driver includes a first drive motor and a first gear, the first gear being sleeved on the drive shaft of the first drive motor and meshing with the first rack. In this way, by controlling the bidirectional rotation of the first drive motor, the return air baffle is driven by the cooperation of the first gear and the first rack to move towards or away from the indoor return air vent 113. When moving towards the indoor return air vent 113, the return air baffle can cover the indoor return air vent 113 to close it; and when moving away from the indoor return air vent 113, the return air baffle disengages from the position covering the indoor return air vent 113 to open it.

[0186] Alternatively, the return air damper is pivotally connected to one side edge of the indoor return air vent 113. The first actuator includes a first drive motor and a pivot shaft, on which the return air damper is mounted. Thus, by controlling the first drive motor to rotate the return air damper, the indoor return air vent 113 can be closed or opened.

[0187] In an optional embodiment, both the outdoor air vent 114 and the indoor return air vent 113 are disposed on the second sidewall 1112 of the air inlet cavity 11 and are located on both sides of the partition plate 15, wherein the outdoor air vent 114 is located on one side of the partition plate 15 corresponding to the first sub-air inlet cavity 115, and the indoor return air vent 113 is located on one side of the partition plate 15 corresponding to the second sub-air inlet cavity 116, as shown below. Figure 11 As shown.

[0188] In some alternative embodiments, combined with Figure 12 As shown, the fresh air duct 20 includes a duct body 21 and a pipe connector 22. The duct body 21 extends from the indoor side to the outdoor side, and the pipe connector 22 is disposed on the indoor end of the duct body 21, which is used to connect the duct body 21 and the module housing 10. In this embodiment, the pipe connector 22 is used to connect the duct body 21 to the outdoor air outlet 114 and the air outlet switching part 30.

[0189] In this embodiment, the fresh air duct 20 has a first duct channel 231 and a second duct channel 232 that are separated from each other and connect the outdoor air outlet 114 and the outdoor side. Outdoor fresh air can be introduced from the outdoor side to the outdoor air outlet 114 of the module housing 10 through the first duct channel 231 and the second duct channel 232 respectively.

[0190] For example, in combination Figure 13As shown, a duct partition 213 is provided inside the duct body 21. This partition 213 extends longitudinally along the duct body 21 and divides it into two relatively independent duct body channels: a first duct body channel 211 and a second duct body channel 212. Similarly, a connector partition 223 is also provided inside the pipe joint 22. This partition 223 extends along the pipe direction of the connector 22, specifically from one end of the connector 22 connecting to the duct body 21 to the end connecting to the outdoor air outlet 114, and divides the connector 22 into two relatively independent connector channels: a first connector channel 221 and a second connector channel 222. The connector partition 223 corresponds to the duct partition 213, such that the first duct body channel 211 and the first connector channel 221 together constitute the first duct channel 231, and the second duct body channel 212 and the second connector channel 222 together constitute the second duct channel 232. Optionally, the outdoor air vent 114 of the module housing 10 is also provided with a separator, which can be used to divide the outdoor air vent 114 into independent air intake paths for the two connector channels of the corresponding pipe connector 22.

[0191] Optionally, the duct partition 213 divides the duct body 21 into two channels with the same cross-sectional area. For example, if the cross-section of the duct body 21 is circular, then in the cross-sectional view, the duct partition 213 extends along a radial line of the duct body 21. Figure 13a As shown. In this embodiment, the two duct bodies 21 channels can achieve the effect of equal air volume delivery. For example, in the bidirectional ventilation mode, the two duct bodies 21 channels respectively deliver outdoor fresh air and indoor stale air, and the outdoor fresh air intake volume is basically the same as the indoor stale air exhaust volume, ensuring the stability of indoor air pressure during the operation of the fresh air module 1.

[0192] Alternatively, the duct partition 213 divides the duct body 21 into two channels with different cross-sectional areas. For example, if the cross-section of the duct body 21 is circular, then from a cross-sectional perspective, the duct partition 213 extends along a straight line at an angle to the radial line of the duct body 21. Figure 13b As shown. Alternatively, the duct partition 213 can be a non-linear partition, such as an arc-shaped plate or a zigzag plate, which can also achieve uneven division of the space of the duct body 21. In this embodiment, the two duct body channels 21 can achieve an uneven air supply effect. For example, in the bidirectional ventilation mode, the cross-sectional area of ​​the first duct body channel 211 is larger than the cross-sectional area of ​​the second duct body channel 212, so that the outdoor fresh air intake corresponding to the first duct body channel 211 is greater than the indoor stale air exhaust corresponding to the second duct body channel 212. This can achieve a positive pressure air supply effect on the indoor environment.

[0193] In some other embodiments, the indoor end of the first duct channel 231 is defined as the first fresh air outlet 2311, and the indoor end of the second duct channel 232 is divided into the second fresh air outlet 2321 and the branch outlet 2322.

[0194] The first fresh air outlet 2311 and the second fresh air outlet 2321 are connected to the outdoor air outlet 114 of the module housing 10, so that the outdoor fresh air from the first fresh air outlet 2311 and the second air duct channel 232 flows to the outdoor air outlet 114 through the second fresh air outlet 2321.

[0195] Furthermore, the branch port 2322 connects the indoor air outlet and the air outlet side of the air inlet chamber 11. It can be used to direct at least a portion of the air output from the air outlet side of the air inlet chamber 11 to the second duct channel 232 via the branch port 2322, thereby discharging this portion of air to the outdoor side. In conjunction with the previous embodiment, since the fan chamber 12 is located on the air outlet side of the air inlet chamber 11, the branch port 2322 connects the volute air outlet of the fan chamber 12 and the indoor air outlet of the module housing 10. Thus, the air output from the volute air outlet can flow to one or both of the indoor air outlet and the branch port 2322. Figure 15 As shown, the branch port 2322 is located near the lower part of the module housing 10. Therefore, in order to save on the length of the pipe material, the branch port 2322 is connected between the second volute air outlet 125 of the fan cavity 12 and the second indoor air outlet 52 of the module housing 10.

[0196] exist Figure 14 and 14a In the illustrated embodiment, the first fresh air outlet 2311, the second fresh air outlet 2321, and the branch outlet 2322 are installed on the pipe joint 22 of the fresh air duct 20.

[0197] In some optional embodiments, the fresh air module 1 further includes a duct switch unit disposed at the location of the second fresh air outlet 2321. The duct switch unit is used to controllably open or close the second fresh air outlet 2321. Optionally, the duct switch unit is configured to open the second fresh air outlet 2321 at least in the fresh air mode, so that the second duct passage 232 is connected to the outdoor air outlet 114, allowing outdoor fresh air to flow into the air inlet chamber 11; and to close the second fresh air outlet 2321 in the bidirectional ventilation mode, so that the second duct passage 232 is blocked from the outdoor air outlet 114.

[0198] Here, the duct switch includes a duct baffle and a second actuator. The duct baffle is driven to be connected to the second actuator, so that the duct baffle is driven to close or open the second fresh air outlet 2321.

[0199] Optionally, the duct baffle is slidably disposed at the second fresh air outlet 2321 relative to the second sidewall 1112. A second rack is provided on one side of the duct baffle, and the second rack extends longitudinally along the side. The second driver includes a second drive motor and a second gear. The second gear is sleeved on the drive shaft of the second drive motor and meshes with the second rack. In this way, by controlling the bidirectional rotation of the second drive motor, the duct baffle is driven by the cooperation of the second gear and the second rack to move towards or away from the second fresh air outlet 2321. When moving towards the second fresh air outlet 2321, the duct baffle can cover the indoor return air vent 113 to close the second fresh air outlet 2321; and when moving away from the second fresh air outlet 2321, the duct baffle disengages from the position covering the second fresh air outlet 2321 to open the second fresh air outlet 2321.

[0200] Alternatively, the duct baffle is pivotally connected to one side edge of the second fresh air outlet 2321. The second actuator includes a second drive motor and a pivot shaft, on which the duct baffle is mounted. Thus, by controlling the second drive motor to rotate the duct baffle, the second fresh air outlet 2321 can be closed or opened.

[0201] In the previous text Figure 11 In the illustrated embodiment, since the outdoor air vent 114 (second fresh air outlet) and the indoor return air vent 113 are both located on the second side wall 1112 of the air inlet cavity 11 and are arranged adjacent to each other, the outdoor air vent 114 (second fresh air outlet) and the indoor return air vent 113 can share the same switching component in this embodiment. The same switching component can be used to simultaneously switch the closed / open state of the second fresh air outlet and the indoor return air vent 113, which can effectively simplify the number of switching components and the complexity of the module structure.

[0202] Specifically, combined Figure 16 and 16a As shown, the fresh air module 1 also includes an integrated switch 40, which is disposed on the second side wall 1112 where the outdoor air outlet 114 and the indoor return air outlet 113 are located, and is configured to at least open the second fresh air outlet 2321 and close the indoor return air outlet 113 in the fresh air mode; and close the second fresh air outlet 2321 and open the indoor return air outlet 113 in the bidirectional air exchange mode.

[0203] Combination Figure 16As shown, the integrated switch unit 40 includes a baffle plate 41 and an integrated driver. The baffle plate 41 is slidably disposed on the second side wall 1112 of the air inlet cavity 11. The integrated driver is drivably connected to the baffle plate 41 and is configured to at least drive the baffle plate 41 to move between a first sliding position and a second sliding position; wherein when the baffle plate 41 is in the first sliding position, the baffle plate 41 opens the first fresh air outlet 2311 and the second fresh air outlet 2321, and blocks the indoor return air vent 113, as shown. Figure 17a As shown; and when the wind deflector 41 is in the second sliding position, the wind deflector 41 blocks the second fresh air outlet 2321, and opens the indoor return air outlet 113 and the first fresh air outlet 2311, as shown. Figure 17b As shown. Here, the first sliding position is located on the second side wall 1112 near the second sub-air inlet 116, and the second sliding position is located on the second side wall 1112 near the first sub-air inlet 115.

[0204] Optionally, a baffle rack 42 is provided on one side (or side surface) of the wind deflector 41, and the baffle rack 42 extends longitudinally along that side. The integrated driver includes an integrated drive motor 43 and an integrated gear 44, with the integrated gear 44 sleeved on the drive shaft of the integrated drive motor 43 and meshing with the baffle rack 42. In this way, by controlling the bidirectional rotation of the integrated drive motor 43, the wind deflector 41 is moved to either a first sliding position or a second sliding position by the engagement of the integrated gear 44 and the baffle rack 42.

[0205] In some alternative embodiments, the integrated driver is also configured to move toward or away from the third sliding position, where, when the baffle 41 is in the third sliding position, the baffle 41 completely blocks the outdoor air vent 114, thus both the first duct passage 231 and the second duct passage 232 are blocked from the air inlet cavity 11, while the indoor return air vent 113 is open. Figure 17c As shown.

[0206] exist Figure 17c In the middle, the third sliding position is located on the other side of the second sliding position, away from the first sliding position. When the wind deflector 41 is in the third sliding position, outdoor fresh air cannot be introduced into the air inlet cavity 11, and indoor air is only delivered to the air inlet cavity 11 through the indoor return air vent 113.

[0207] In some alternative embodiments, the partition 15 is a split structure, comprising a first partition 154 and a second partition 155 connected longitudinally along the plate body, such as... Figures 17a to 17cAs shown. Optionally, the first partition 154 is composed of the first arc plate segment 151 and the intermediate arc plate segment 153 in the previous embodiment, and the second partition 155 is composed of the second arc plate segment 152; or, the first partition 154 is composed of the first arc plate segment 151, and the second partition 155 is composed of the second arc plate segment 152 and the intermediate arc plate segment 153.

[0208] Here, the first partition 154 is fixed in the air inlet cavity 11. The second partition 155 is disposed on the baffle plate 41 of the integrated switch part 40, and the second partition 155 can slide synchronously with the baffle plate 41. In this embodiment, the bottom end of the second partition 155 is fixed to the side of the baffle plate 41 facing the air inlet cavity 11. Optionally, the second partition 155 and the baffle plate 41 are an integral structure, or the bottom end of the second partition 155 is fixed to the corresponding side of the baffle plate 41 by means of adhesive, welding or other methods.

[0209] Specifically, when the baffle plate 41 moves to the first sliding position, the first partition 154 and the second partition 155 are offset, and the second partition 155 moves into the cavity space of the second sub-air inlet cavity 116, so that the area originally separated and blocked by the second partition 155 is opened. In this way, the fresh air duct 20 is connected to both the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116, and outdoor fresh air can flow to both the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 at the same time. When the baffle plate 41 moves to the second sliding position, the first partition 154 and the second partition 155 are connected. The first partition 154 and the second partition 155 simultaneously serve to separate the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116, so that the fresh air duct 20 is only connected to the first sub-air inlet cavity 115 through the outdoor air outlet 114, and the fresh air duct 20 is blocked from the second sub-air inlet cavity 116.

[0210] Furthermore, when the wind deflector 41 moves to the third sliding position, the first partition 154 and the second partition 155 are offset, and the second partition 155 moves into the cavity space of the first sub-air inlet cavity 115, so that the area originally separated and blocked by the second partition 155 is opened. In this way, the indoor return air vent 113 is connected to both the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116, and indoor air can flow to both the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 at the same time.

[0211] In some alternative embodiments, combined with Figures 18 to 18b As shown in Figure 22, the fresh air module 1 also includes an air outlet switching part 30 (air outlet switching mechanism), which is located at the connection position of the branch pipe port 2322, the second indoor air outlet 52 and the air outlet side of the air inlet cavity 11. The air outlet switching part 30 can be used to switch in a controlled manner, so that the air outlet side of the air inlet cavity 11 is connected to one of the branch pipe port 2322 and the second indoor air outlet 52, while the other is blocked.

[0212] In conjunction with the previous embodiment, the fan cavity 12 is located on the air outlet side of the air inlet cavity 11, and the second indoor air outlet 52 is connected to the fan cavity 12. Therefore, in this embodiment, the air outlet switching unit 30 is configured to switch between at least a 100% fresh air state and a bidirectional air exchange state; wherein, in the 100% fresh air state, the air path between the fan cavity 12 and the second indoor air outlet 52 is connected, while the air path between the fan cavity 12 and the branch pipe 2322 is blocked; in the bidirectional air exchange state, the air path between the fan cavity 12 and the branch pipe 2322 is connected, while the air path between the fan cavity 12 and the second indoor air outlet 52 is blocked.

[0213] Combination Figure 18b As shown, the air outlet switching unit 30 includes a switching housing 31 and an air plug assembly.

[0214] The internal structure of the switching housing 31 includes a switching air chamber, a switching air inlet 311, a first switching air outlet 312, and a second switching air outlet 313 communicating with the switching air chamber. The switching housing 31 is installed on the fan volute 121, with the switching air inlet 311 connected to the second volute air outlet 125 of the fan volute 121. The first switching air outlet 312 is connected to the branch pipe 2322 of the second duct channel 232. The second switching air outlet 313 can be used as the "second indoor air outlet 52" mentioned above.

[0215] Optionally, the airlock assembly includes an airlock block 32 and an airlock motor 33, such as Figure 19 As shown. The air block 32 is rotatably disposed within the switching air chamber; the air block motor 33 is driven and connected to the air block 32, and is configured to at least drive the air block 32 to move between a first rotational position and a second rotational position. The first rotational position corresponds to a 100% fresh air state. When the air block 32 is in the first rotational position, it blocks the first switching air outlet 312 (branch pipe 2322), so that the switching air inlet 311 is only connected to the second switching air inlet 311 (second indoor air outlet 52), as shown. Figure 20a As shown. The second rotation position corresponds to the bidirectional ventilation state. When the air block 32 is in the second rotation position, it blocks the second switching air outlet 313 (second indoor air outlet 52), so that the switching air inlet 311 is only connected to the first switching air inlet 311 (branch pipe 2322), as shown. Figure 20b As shown.

[0216] In some alternative embodiments, the switching air inlet 311, the first switching air outlet 312, and the second switching air outlet 313 are arranged at intervals on the switching housing 31 along the outer periphery of the rotation axis of the air block 32. For example, combined with Figure 20a and 20bAs shown, the switching air inlet 311 is located on the upper side of the rotation axis, the first switching air outlet 312 is located on the right side of the rotation axis, and the second switching air outlet 313 is located on the lower left side of the rotation axis. This allows the air block 32 to switch between multiple preset rotation positions as it rotates around its rotation axis.

[0217] Optionally, the switching housing 31 includes a circular cavity 314, the outer periphery of which has arc-shaped openings corresponding to the switching air inlet 311, the first switching air outlet 312, and the second switching air outlet 313, respectively.

[0218] Combination Figure 18a and 21a As shown, the air block 32 includes a central rotating shaft 321 and an air block baffle 322. The central rotating shaft 321 is coaxially disposed at the center of the circular cavity 314 and is driven and connected to the air block motor 33, which is disposed on an axially outer side of the switching housing 31. The air block baffle 322 is fixedly connected to the central rotating shaft 321 so that the air block motor 33 can drive the air block baffle 322 to rotate within the circular cavity 314 through the central rotating shaft 321.

[0219] Optionally, the wind deflector 322 includes an arc-shaped plate 3221 and a support plate 3222. The arc-shaped plate 3221 extends along the circumference of the circular cavity 314, and the curvature of the arc-shaped plate 3221 is greater than or equal to the curvature of each arc-shaped opening, so that any arc-shaped opening can be blocked during rotation. The support plate 3222 is used to connect the central rotating shaft 321 and the wind deflector 322. It is constructed as a fan-shaped sheet whose surface extends radially from the central rotating shaft 321. The outer arc edge of the support plate 3222 is fixedly connected to the wind deflector 322, and the center of the arc is fixedly connected to the central rotating shaft 321. Figure 19a As shown.

[0220] In some optional embodiments, there is one support plate 3222, which is fixed to one end of the central rotating shaft 321, such as the left or right end of the central rotating shaft 321. A single support plate 3222 can effectively reduce the overall weight of the wind block baffle 322, thereby reducing the operating power consumption of the wind block motor 33. In some other optional embodiments, there are two support plates 3222, which are symmetrically fixed to both ends of the central rotating shaft 321. In this embodiment, the two support plates 3222 can provide support for the axial sides of the arc-shaped plate 3221, preventing the wind block baffle 322 from tilting under the action of wind pressure, and ensuring the wind blocking effect of the wind block baffle 322 in the switching air cavity.

[0221] Optionally, the motor housing of the airlock motor 33 is provided with a fixing lug 331, and the fixing lug 331 has screw holes, such as... Figure 19bAs shown; the outer wall of the circular cavity 314 is provided with a fixing seat 315, such as Figure 21 As shown, the wind-blocking motor 33 is assembled into the circular cavity 314 via a fixed ear plate 331 and a fixed base 315.

[0222] In some alternative embodiments, the second duct channel 232 can be replaced by another separate exhaust duct, that is, the first duct channel 231 serves as the fresh air duct 20 alone, used to supply fresh outdoor air to the indoor side; the exhaust duct replaces the second duct channel 232, which can at least be used to exhaust indoor stale air to the outdoor side. Here, the exhaust duct has an indoor inlet on the indoor side and an outdoor inlet on the outdoor side, wherein the indoor inlet is connected to the first switching outlet of the air supply switching mechanism. After the indoor stale air enters the module housing 10 from the indoor return air inlet 113, it flows sequentially through the air inlet chamber 11, the fan chamber 12, and the switching chamber before flowing to the exhaust duct, and is finally discharged to the outdoor side through the exhaust duct.

[0223] In this embodiment, the exhaust duct and the indoor air outlet are spaced a certain distance apart, and correspondingly, combined with Figure 18a As shown, the switching air chamber also includes an expansion cavity, which extends from the circular cavity 314 toward the sewage duct (second duct channel 232) to connect the circular cavity 314 and the indoor duct opening (branch opening 2322) of the sewage duct (second duct channel 232). The extension distance of the expansion cavity is adapted to the interval distance between the sewage duct and the indoor air outlet.

[0224] The following description, in conjunction with the various embodiments of the fresh air module 1 shown above, will explain several air exchange modes of the fresh air module 1 of this application. (Wherein, outdoor fresh air is indicated by solid arrows, and indoor stale air is indicated by dashed arrows.)

[0225] Optionally, the operating mode of the fresh air module 1 includes a 100% fresh air mode. In this mode, the fresh air module 1 supplies fresh outdoor air from the outdoor side to the indoor side. In this mode, the fresh air module 1 does not supply stale indoor air to the outdoor side. The 100% fresh air mode can supplement the indoor side with high-quality outdoor fresh air, thereby improving the indoor air quality.

[0226] In some embodiments, in the fresh air mode, outdoor fresh air is delivered to the indoor side via the fresh air duct 20, the air inlet chamber 11, the first indoor air outlet 51, and / or the second indoor air outlet 52. Specifically, in the fresh air mode, the impeller 122 is kept rotating in a set rotation direction (such as the first rotation direction); the baffle 41 of the control integrated switch 40 is moved to the first sliding position so that the indoor return air outlet 113 is blocked, and the first air duct channel 231 and the second air duct channel 232 of the fresh air duct 20 are both connected to the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 of the air inlet chamber 11; the air block 32 of the control air outlet switching mechanism is located in the first rotation position so that the second air duct channel 232 is blocked from the switching air chamber, and the fan chamber 12 is connected to the first indoor air outlet 51 and the second indoor air outlet 52.

[0227] In this way, when the impeller 122 rotates, it generates negative pressure suction on the air inlet chamber 11 side, attracting fresh outdoor air from the outside to flow into the indoor side through the first air duct channel 231 and the second air duct channel 232, and then entering the air inlet chamber 11 through the outdoor air outlet 114 of the module housing 10. Figure 23a and 23c The middle arrow indicates the airflow direction; subsequently, fresh outdoor air flows from the air inlet cavity 11 into the fan cavity 12, and then from the first indoor air outlet 51 and the second indoor air outlet 52, as shown... Figure 23b The middle arrow indicates the direction of airflow.

[0228] Alternatively, the operating mode of the fresh air module 1 includes a two-way ventilation mode. In this mode, the fresh air module 1 simultaneously supplies fresh outdoor air from the outdoor side to the indoor side, and simultaneously supplies stale indoor air from the indoor side to the outdoor side. This two-way ventilation mode allows for the simultaneous intake of fresh outdoor air into the indoor side and the exhaust of stale indoor air into the indoor side, thus achieving synchronous replacement of fresh and stale air and improving indoor air quality more quickly.

[0229] In some embodiments, in the bidirectional ventilation mode, it is divided into two flow paths: an outdoor fresh air flow path and an indoor exhaust air flow path. Specifically, in the bidirectional ventilation mode, the impeller 122 is kept rotating in a set rotation direction (such as the first rotation direction); the baffle 41 of the control integrated switch 40 is moved to the second sliding position so that the indoor return air vent 113 is open and the second fresh air outlet 2321 of the second duct channel 232 is blocked; the air block 32 of the control air outlet switching mechanism is located in the second rotation position so that the branch outlet 2322 of the second duct channel 232 is connected to the switching air chamber, and the switching air chamber is blocked from the second indoor air outlet 52, so that the fan chamber 12 is connected to the first indoor air outlet 51 and the second duct channel 232.

[0230] In this way, when the impeller 122 rotates, it generates a negative pressure suction on the air inlet chamber 11 side, attracting both fresh outdoor air from the outside and stale indoor air from the inside into the air inlet chamber 11 simultaneously. The fresh outdoor air flow path involves the fresh outdoor air being sequentially transported through the first duct channel 231, the first sub-air inlet chamber 115, and the fan chamber 12 to the first indoor air outlet 51, and then the fresh outdoor air is delivered into the indoor environment through the first indoor air outlet 51. Figure 24a and 24c The middle arrow indicates the airflow direction. The indoor exhaust airflow path includes the indoor stale air being sequentially transported through the indoor return air inlet 113, the second sub-inlet air chamber 116, and the fan chamber 12 to the second duct channel 232, and finally exhausted to the outdoor side through the second duct channel 232. Figure 24b and 24c The middle arrow indicates the direction of airflow.

[0231] Another optional operating mode for the fresh air module 1 includes a full return air mode. In full return air mode, the fresh air module 1 is used to supply at least a portion of the outdoor polluted air from the indoor side to the outdoor side, and / or to filter and purify at least a portion of the indoor polluted air before returning it to the indoor side. In this mode, the fresh air module 1 does not supply outdoor fresh air to the indoor side. This mode is suitable for situations where the outdoor ambient air quality is also poor, such as during smoggy weather.

[0232] In some embodiments, in the full return air mode, indoor stale air is delivered to the outdoor side via the indoor return air inlet 113, the air inlet chamber 11, the fan chamber 12, and the second duct passage 232 (sewage exhaust duct), and / or indoor stale air is returned to the indoor side via the indoor return air inlet 113, the air inlet chamber 11, the fan chamber 12, and the first indoor air outlet 51. Specifically, in the full return air mode, the impeller 122 is kept rotating in a set rotation direction (such as the first rotation direction); the baffle 41 of the control integrated switch 40 is moved to the third sliding position so that the outdoor air outlet 114 is blocked and the indoor return air outlet 113 is open; the air block 32 of the control air outlet switching mechanism is located in the first rotation position or the second rotation position.

[0233] In this way, when the impeller 122 rotates, it generates negative pressure suction on the air inlet side of the air inlet chamber 11, attracting indoor stale air from the indoor side into the air inlet chamber 11 through the indoor return air inlet 113 of the module housing 10, and then diverting it to the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116, as shown. Figure 25a The middle arrow indicates the airflow direction; whereby, the indoor stale air in the first sub-air inlet chamber 115, after being filtered and purified by the air filter element 14, flows into the fan chamber 12, and is then returned to the indoor environment from the first indoor air outlet 51, as shown. Figure 25b and 25c As shown.

[0234] The indoor stale air in the second sub-inlet chamber 116, after being filtered and purified by the air filter element 14, flows into the fan chamber 12 and is then delivered to the switching chamber. Here, with the air block 32 in the first rotating position, this portion of the indoor stale air is returned to the indoor environment from the second indoor air outlet 52, such as... Figure 25b As shown. When the air block 32 is in the second rotation position, this portion of the indoor stale air is discharged from the second air duct 232 to the outdoor environment, such as... Figure 25c and 25d As shown.

[0235] In some alternative embodiments, this application also provides an air conditioner 6, including an air conditioning unit and a fresh air module 1 as described in any of the preceding embodiments, such as... Figure 26 and 26a As shown.

[0236] Optional, combined Figure 26 and 26a As shown, the air conditioner 6 is a wall-mounted air conditioner. The air conditioner body includes an indoor unit casing 61 and a heat exchange component and a fresh air module 1 disposed inside the indoor unit casing 61. Optionally, the heat exchange component is disposed in the middle and one side space of the indoor unit casing 61, and the fresh air module 1 is disposed in the other side space of the indoor unit casing 61.

[0237] Here, the heat exchange components include an indoor heat exchange duct, an indoor heat exchanger 62, and a cross-flow fan. The indoor heat exchange duct has a heat exchange return air inlet and a heat exchange outlet. The indoor heat exchanger 62 and the indoor fan are disposed in the indoor heat exchange duct, wherein the indoor heat exchanger 62 is used to exchange heat with the return airflow flowing through the indoor heat exchanger duct. The indoor fan is used to rotate and generate aerodynamic force to drive the airflow through the indoor heat exchange duct.

[0238] Meanwhile, the indoor unit casing 61 is also provided with a first casing air outlet 611, a second casing air outlet 612, and a casing return air outlet 613. Specifically, the first indoor air outlet 51 of the fresh air module 1 corresponds to and is connected to the first casing air outlet 611, and the second indoor air outlet 52 corresponds to and is connected to the second casing air outlet 612. Thus, outdoor fresh air (or filtered indoor air) flowing through the fresh air module 1 can be delivered into the indoor environment through the first casing air outlet 611 and the second casing air outlet 612. Furthermore, the indoor return air outlet 113 of the fresh air module 1 corresponds to and is connected to the casing return air outlet 613, thus allowing indoor stale air to flow into the fresh air module 1 through the casing return air outlet 613.

[0239] 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 module, characterized in that, The system includes an air outlet switching mechanism, comprising: a switching housing having an internal switching air chamber, and a switching air inlet, a first switching air outlet, and a second switching air outlet communicating with the switching air chamber; and an air block assembly including an air block block and an air block motor, wherein the air block block is rotatably disposed within the switching air chamber; the air block motor is drivenly connected to the air block block and is configured to at least drive the air block block to move between a first rotation position and a second rotation position; wherein, when the air block block is in the first rotation position, it blocks the first switching air outlet, and the switching air inlet communicates with the second switching air outlet; and, when the air block block is in the second rotation position, it blocks the second switching air outlet, and the switching air inlet communicates with the first switching air outlet. It also includes a module housing, the air cavity of which includes an air inlet cavity and a fan cavity, and the air inlet cavity and the fan cavity are connected, allowing air to flow between the air inlet cavity and the fan cavity; the air inlet cavity includes a first sub-air inlet cavity and a second sub-air inlet cavity, which are separated from each other, and the first sub-air inlet cavity and the second sub-air inlet cavity each form a relatively independent air path, the air flowing into the air inlet cavity is diverted to the first sub-air inlet cavity and the second sub-air inlet cavity, and continues to be delivered to the fan cavity along their respective air paths; the air inlet cavity is provided with a partition component, which... The partition is used to divide the air inlet chamber into a first sub-air inlet chamber and a second sub-air inlet chamber to separate the air paths when the first sub-air inlet chamber and the second sub-air inlet chamber are supplying air from different air sources; the fan chamber is located on the air outlet side of the air inlet chamber, and the first indoor air outlet and the second indoor air outlet are respectively connected to the air inlet chamber through the fan chamber; the first indoor air outlet is set corresponding to the first sub-air inlet chamber and is located in the middle and lower reaches of the impeller rotation flow direction; the second indoor air outlet is set corresponding to the second sub-air inlet chamber and is located in the middle and lower reaches of the impeller rotation flow direction; The module housing also has an outdoor air vent and an indoor return air vent, wherein the outdoor air vent is located on one side of the corresponding first sub-air inlet of the partition component, and the indoor return air vent is located on one side of the corresponding second sub-air inlet of the partition component. In addition, the fresh air module also includes a sewage duct, which has an indoor duct opening on the indoor side and an outdoor duct opening on the outdoor side; wherein, the switching air inlet of the air outlet switching mechanism is connected to the air outlet side of the air inlet chamber, the first switching air outlet is connected to the indoor duct opening of the sewage duct, and the second switching air outlet is connected to the second indoor air outlet.

2. The fresh air module according to claim 1, characterized in that, The switching air inlet, the first switching air outlet, and the second switching air outlet are arranged at intervals on the outer periphery of the rotation axis of the air block.

3. The fresh air module according to claim 2, characterized in that, The switching air chamber includes a circular cavity with arc-shaped openings on its outer periphery corresponding to the switching air inlet, the first switching air outlet, and the second switching air outlet, respectively. The air block includes: The central rotating shaft is coaxially located at the center of the circular cavity and is connected to the air plug motor drive. The windproof baffle is fixedly connected to the central rotating shaft. The windproof baffle is constructed as an arc-shaped plate extending along the circumference of the circular cavity, and the curvature of the windproof baffle is greater than or equal to the curvature of each arc-shaped opening, so that any arc-shaped opening can be blocked during rotation.

4. The fresh air module according to claim 3, characterized in that, The air block also includes a support plate, which is used to connect the central rotating shaft and the air block baffle; The support plate is constructed as a fan-shaped sheet extending radially along the circular cavity, with its arc edge fixedly connected to the wind block baffle and its arc center fixedly connected to the central rotating shaft.

5. The fresh air module according to claim 4, characterized in that, There is one support plate, which is fixed to one end of the central rotating shaft; There are two support plates, which are symmetrically fixed at both ends of the central rotating shaft.

6. The fresh air module according to any one of claims 3 to 5, characterized in that, The motor housing of the air-block motor is equipped with a fixing lug, and the fixing lug has screw holes; the outer wall of the circular cavity is equipped with a fixing seat, and the air-block motor is assembled into the circular cavity through the fixing lug and the fixing seat.

7. The fresh air module according to claim 1, characterized in that, Sewage exhaust ducts and indoor air outlets are spaced apart; The switching air chamber also includes an expansion chamber that extends from the circular chamber toward the sewage duct to connect the indoor duct opening of the circular chamber and the sewage duct.

8. An air conditioner, characterized in that, include: Air conditioner unit; and, The fresh air module as claimed in any one of claims 1 to 7.

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