Fresh air module and air conditioner

Abstract

The application relates to the technical field of indoor fresh air exchange, and discloses a fresh air module, which comprises a module shell, an air inlet cavity and a fan cavity are constructed in the module shell, the fan cavity is internally provided with a rotatable impeller, a separation component is arranged in the air inlet cavity and is used for separating the air inlet cavity into a first air inlet cavity and a second air inlet cavity, an air outlet group comprises a first air outlet and a second air outlet, the first air outlet corresponds to the first air inlet cavity, the second air outlet corresponds to the second air inlet cavity, the airflow of the first air inlet cavity is deviated to flow to the first air outlet and the airflow of the second air inlet cavity is deviated to flow to the second air outlet when the fan cavity rotates downwards, and the separation component is movably arranged in the air inlet cavity and can be controlled to adjust the relative position with the air inlet cavity so as to change the cavity space of the first air inlet cavity and the second air inlet cavity. The disclosed embodiment can adjust the air volume of the two air inlet cavities. The application further discloses an air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of indoor fresh air replacement, for example to a fresh air module and an air conditioner. BACKGROUND

[0002] With the increasing attention to air quality, users have higher and higher requirements for air quality in living rooms, bedrooms and other daily indoor environments. There are many factors that can cause the decline of indoor air quality, for example, formaldehyde, benzene and ammonia air pollutants volatilized from indoor decoration materials, or a large amount of carbon dioxide, formaldehyde and other harmful gases accumulated in the indoor environment due to the closed doors and windows at night. Such air quality problems will more or less affect the health of users in the indoor environment, such as inducing users to have chest tightness, shortness of breath, dry mouth, dry throat, and other discomfort symptoms.

[0003] One of the effective methods to solve the above air quality problems is to maintain the ventilation between indoor and outdoor environments, and to introduce fresh outdoor air into the indoor environment to increase the oxygen content and reduce the concentration of air pollutants. In this case, the "fresh air conditioner" product emerges as the times require. The fresh air conditioner is a product that adds a fresh air module and a fresh air pipe to the traditional air conditioner, and uses a fan to suck fresh outdoor air into the indoor environment to improve the indoor air quality.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] In the related product design, there is also a fresh air module scheme with outdoor fresh air and indoor exhaust air dual functions. The internal air cavity of the fresh air module is provided with an intermediate partition plate. The intermediate partition plate can separate the air cavity into an outdoor fresh air cavity and an indoor dirty air cavity, and enable the outdoor fresh air to be introduced into the indoor environment through the outdoor fresh air cavity, and the indoor dirty air to be discharged to the outdoor environment through the indoor dirty air cavity. However, the intermediate partition plate is in the form of a fixed partition plate, and the outdoor fresh air cavity and the indoor dirty air cavity are also fixed cavity volumes. Therefore, the outdoor fresh air volume and the indoor dirty air volume of the fresh air module cannot be adjusted.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important components or to delineate the protection scope of these embodiments, but as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide a fresh air module and an air conditioner to solve the technical problem that the fresh air module in the related art is designed in a separate cavity, so that the fresh air volume and the dirty air volume cannot be adjusted according to different use requirements.

[0009] According to the embodiments of the first aspect of the present disclosure, a fresh air module is provided, comprising:

[0010] a module housing, which is internally structured with an air inlet cavity and a fan cavity for airflow to flow through; the fan cavity is internally provided with a rotatable impeller; the air inlet cavity is internally provided with a partition component, which is used to separate the air inlet cavity into a first sub-air inlet cavity and a second sub-air inlet cavity;

[0011] an air outlet group, comprising a first air outlet and a second air outlet; the first air outlet corresponds to the first sub-air inlet cavity, and the second air outlet corresponds to the second sub-air inlet cavity; in the fan cavity rotates downward, at least part of the airflow of the first sub-air inlet cavity is deviated to flow to the first air outlet, and at least part of the airflow of the second sub-air inlet cavity is deviated to flow to the second air outlet;

[0012] wherein the partition component is movably arranged in the air inlet cavity, and can be controlled to adjust the relative position with the air inlet cavity to change the cavity volume of the first sub-air inlet cavity and the second sub-air inlet cavity.

[0013] In some optional embodiments, the partition component is pivotally connected to the air inlet cavity to rotatably adjust the relative position with the air inlet cavity.

[0014] In some optional embodiments, the partition component comprises:

[0015] a movable partition plate, which is pivotally connected to the air inlet cavity, and the movable partition plate and at least one part of the cavity wall of the air inlet cavity together form the first sub-air inlet cavity, and the movable partition plate and at least another part of the cavity wall of the air inlet cavity together form the second sub-air inlet cavity;

[0016] a partition plate driver, which is drivingly connected to the movable partition plate, and is used to drive the movable partition plate to rotate around the shaft in the air inlet cavity to change the cavity volume of the first sub-air inlet cavity and the second sub-air inlet cavity which are surrounded by the movable partition plate.

[0017] In some optional embodiments, the partition component further comprises:

[0018] a first stationary partition plate, which is fixed in the air inlet cavity, and the movable partition plate, the first stationary partition plate and at least one part of the cavity wall of the air inlet cavity together form the first sub-air inlet cavity;

[0019] and / or a second stationary partition plate, which is fixed in the air inlet cavity, and the movable partition plate, the second stationary partition plate and at least another part of the cavity wall of the air inlet cavity together form the second sub-air inlet cavity.

[0020] In some optional embodiments, the movable partition plate has a first outer plate end and a second outer plate end located at the longitudinal two ends of the movable partition plate.

[0021] The first static partition plate comprises a first circular arc segment extending along a rotating outer periphery of a first outer plate end of the movable partition plate, and the first outer plate end of the movable partition plate is slidably abutted against an inner plate surface of the first circular arc segment; and / or the second static partition plate comprises a second circular arc segment extending along a rotating outer periphery of a second outer plate end of the movable partition plate, and the second outer plate end of the movable partition plate is slidably abutted against an inner plate surface of the second circular arc segment.

[0022] In some optional embodiments, the movable partition plate is a straight plate or a non-straight plate.

[0023] In some optional embodiments, the fresh air module further comprises an air inlet group, which comprises:

[0024] a first air inlet, which is arranged on a cavity wall corresponding to the first sub-air inlet cavity, and is used to introduce outdoor fresh air into the first sub-air inlet cavity;

[0025] a second air inlet, which is arranged on a cavity wall corresponding to the second sub-air inlet cavity, and is used to introduce indoor dirty air into the second sub-air inlet cavity.

[0026] In some optional embodiments, the first air outlet is used to output the outdoor fresh air from the first sub-air inlet cavity to the indoor side;

[0027] and / or, the second air outlet is used to discharge the indoor dirty air from the second sub-air inlet cavity to the outdoor side, or output the indoor dirty air from the second sub-air inlet cavity to the indoor side after filtering.

[0028] In some optional embodiments, the fresh air module further comprises a fresh air pipe, which has a first pipe channel and a second pipe channel;

[0029] wherein one end of the first pipe channel is connected to the first air inlet, and the other end extends to the outdoor side and is connected to the outdoor side, so as to introduce the outdoor fresh air into the first sub-air inlet cavity; and one end of the second pipe channel is connected to the second air outlet, and the other end extends to the outdoor side and is connected to the outdoor side, so as to discharge the indoor dirty air to the outdoor side.

[0030] According to the embodiments of the second aspect of the present application, an air conditioner is provided, comprising an air conditioner body and a fresh air module according to any one of the embodiments of the first aspect.

[0031] The fresh air module and the air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0032] In the embodiments of the present disclosure, the separation component is movably arranged in the air inlet cavity, so that during the movement of the separation component, the cavity space of the first sub-air inlet cavity and the second sub-air inlet cavity formed by the separation component can be changed, thereby adjusting the fresh air inlet amount and the dirty air exhaust amount of the first sub-air inlet cavity and the second sub-air inlet cavity.

[0033] The foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to be limiting of the application. BRIEF DESCRIPTION OF DRAWINGS

[0034] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the application as defined by the claims and their equivalents. Identical reference numbers in the figures designate similar elements. The figures are not necessarily to scale, and the size of the elements in the figures can be exaggerated for illustrative purposes. In the figures:

[0035] Figure 1 is a schematic diagram of the overall structure of a fresh air module according to an embodiment of the present disclosure;

[0036] Figure 1a is a schematic diagram of the exploded structure of a fresh air module according to an embodiment of the present disclosure;

[0037] Figure 2 is a schematic diagram of the overall structure of a module housing according to an embodiment of the present disclosure;

[0038] Figure 2a is a schematic diagram of the exploded structure of a module housing according to an embodiment of the present disclosure, from view angle one;

[0039] Figure 2b is a schematic diagram of the exploded structure of a module housing according to an embodiment of the present disclosure, from view angle two;

[0040] Figure 3a is a schematic diagram of the cross-sectional structure of an air inlet cavity according to an embodiment of the present disclosure;

[0041] Figure 3b is a schematic diagram of the exploded structure of an air inlet cavity according to an embodiment of the present disclosure;

[0042] Figure 3c is a schematic diagram of the structure of an air outlet cavity wall according to an embodiment of the present disclosure;

[0043] Figure 3d is a schematic diagram of the assembly of a partition plate according to an embodiment of the present disclosure;

[0044] Figure 3e is a schematic diagram of the structure of a partition plate according to another embodiment of the present disclosure;

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

[0046] Figure 4a is a schematic diagram of the exploded structure of an air filter element according to an embodiment of the present disclosure;

[0047] Figure 4b is a schematic diagram of the external structure of an air inlet cavity according to another embodiment of the present disclosure;

[0048] Figure 4c is a structural schematic diagram of a slot provided by an embodiment of the present disclosure;

[0049] Figure 4d is a structural schematic diagram of a wall of an air outlet cavity provided by another embodiment of the present disclosure;

[0050] Figure 5 is a structural schematic diagram of a fan cavity provided by an embodiment of the present disclosure;

[0051] Figure 5a is a disassembled structural schematic diagram of a fan cavity provided by an embodiment of the present disclosure;

[0052] Figure 5b is a cross-sectional schematic diagram of a fan cavity provided by an embodiment of the present disclosure;

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

[0054] Figure 5d is a structural schematic diagram of a first volute air outlet provided by an embodiment of the present disclosure;

[0055] Figure 5e is a structural schematic diagram of a second volute air outlet provided by an embodiment of the present disclosure;

[0056] Figure 6 is a structural schematic diagram of an impeller provided by an embodiment of the present disclosure;

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

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

[0059] Figure 9 is an outdoor air outlet schematic diagram of a module shell provided by an embodiment of the present disclosure;

[0060] Figure 10 is an indoor return air outlet schematic diagram of a module shell provided by an embodiment of the present disclosure;

[0061] Figure 11 is a second side wall schematic diagram of an air inlet cavity provided by an embodiment of the present disclosure;

[0062] Figure 12 is a structural schematic diagram of a fresh air duct provided by an embodiment of the present disclosure;

[0063] Figure 13 is a structural schematic diagram of a duct body provided by an embodiment of the present disclosure;

[0064] Figure 13a is a cross-sectional view of a duct body according to an embodiment of the present disclosure;

[0065] Figure 13b is a cross-sectional view of a duct body according to another embodiment of the present disclosure;

[0066] Figure 14 is a structural view of a pipe joint according to an embodiment of the present disclosure;

[0067] Figure 14a is a cross-sectional view of a pipe joint according to an embodiment of the present disclosure;

[0068] Figure 15 is an assembly view of a pipe joint, a module shell and an air outlet switching part according to an embodiment of the present disclosure;

[0069] Figure 16 is a structural view of an integrated switch part according to an embodiment of the present disclosure;

[0070] Figure 16a is an assembly view of an integrated switch part and a module shell according to an embodiment of the present disclosure;

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

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

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

[0074] Figure 18 is a structural view of an air outlet switching part according to an embodiment of the present disclosure;

[0075] Figure 18a is a cross-sectional structural view of an air outlet switching part according to an embodiment of the present disclosure;

[0076] Figure 18b is a disassembled structural view of an air outlet switching part according to an embodiment of the present disclosure;

[0077] Figure 19 is a structural view of a wind blocking assembly according to an embodiment of the present disclosure;

[0078] Figure 19a is a structural view of a wind blocking block according to an embodiment of the present disclosure;

[0079] Figure 19bis an assembly schematic diagram of the wind blocking motor and the switching shell provided by an embodiment of the present disclosure;

[0080] Figure 20a is a schematic diagram of the wind blocking block in a first rotating position provided by an embodiment of the present disclosure;

[0081] Figure 20b is a schematic diagram of the wind blocking block in a second rotating position provided by an embodiment of the present disclosure;

[0082] Figure 21 is an external schematic diagram of the switching shell provided by an embodiment of the present disclosure;

[0083] Figure 21a is a cross-sectional schematic diagram of the switching shell provided by an embodiment of the present disclosure;

[0084] Figure 21b is an assembly schematic diagram of the air outlet switching part, the module shell and the fresh air pipe provided by an embodiment of the present disclosure;

[0085] Figure 22a is an external structural schematic diagram of the fresh air module provided by another embodiment of the present disclosure;

[0086] Figure 22b is a perspective view one cross-sectional view of the fresh air module provided by another embodiment of the present disclosure;

[0087] Figure 22c is a perspective view two cross-sectional view of the fresh air module provided by another embodiment of the present disclosure;

[0088] Figure 22d is a cooperation schematic diagram of the movable baffle and the baffle driver provided by another embodiment of the present disclosure;

[0089] Figure 22e is a state schematic diagram of the movable baffle in a first position provided by another embodiment of the present disclosure;

[0090] Figure 22f is a state schematic diagram of the movable baffle in a second position provided by another embodiment of the present disclosure;

[0091] Figure 22g is a cooperation schematic diagram of the first baffle, the second baffle and the baffle driver provided by another embodiment of the present disclosure;

[0092] Figure 22h is a perspective view three cross-sectional view of the fresh air module provided by another embodiment of the present disclosure;

[0093] Figure 23a is a schematic diagram of the air flow direction of the air inlet cavity in the all fresh air mode provided by an embodiment of the present disclosure;

[0094] Figure 23bis a schematic diagram of airflow flow direction of the fan cavity and the air outlet switching part in the new air mode provided by an embodiment of the present disclosure;

[0095] Figure 23c is a schematic diagram of airflow flow direction of the fresh air pipe in the new air mode provided by an embodiment of the present disclosure;

[0096] Figure 24a is a schematic diagram of airflow flow direction of the fresh air pipe in the new air mode provided by an embodiment of the present disclosure;

[0097] Figure 24b is a schematic diagram of airflow flow direction of the fresh air pipe in the new air mode provided by an embodiment of the present disclosure;

[0098] Figure 24c is a schematic diagram of airflow flow direction of the fresh air pipe in the new air mode provided by an embodiment of the present disclosure;

[0099] Figure 25a is a schematic diagram of airflow flow direction of the fresh air pipe in the new air mode provided by an embodiment of the present disclosure;

[0100] Figure 25b is a schematic diagram of airflow flow direction of the fresh air pipe in the new air mode provided by an embodiment of the present disclosure;

[0101] Figure 25c is a schematic diagram of airflow flow direction of the fresh air pipe in the new air mode provided by an embodiment of the present disclosure;

[0102] Figure 25d is Figure 25c is a schematic diagram of airflow flow direction of the fresh air pipe in the new air mode provided by an embodiment of the present disclosure;

[0103] Figure 26 is a schematic diagram of the external structure of the air conditioner provided by an embodiment of the present disclosure;

[0104] Figure 26a is a schematic diagram of the internal structure of the air conditioner provided by an embodiment of the present disclosure.

[0105] Reference signs:

[0106] 1, fresh air module;

[0107] 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 inlet cavity air outlet; 113, indoor return air outlet; 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 part; 1212, second volute part; 122, impeller; 1221, hub; 1222, blade; 1223, air inlet channel; 123, volute air inlet; 124, first volute air outlet; 1241, first extension segment; 1242, first volute tongue segment; 125, second volute air outlet; 1251, second extension segment; 1252, second volute tongue segment; 126, impeller driver; 13, first air outlet duct; 14, air filter element; 141, filter element partition strip; 142, first filter element part; 143, second filter element part; 15, partition plate; 151, first arc plate segment; 152, second arc plate segment; 153, intermediate arc plate segment; 154, first partition plate; 155, second partition plate; 16, partition rib; 171, first track; 172, second track;

[0108] 181, movable partition; 182, partition driver; 183, first stationary partition; 1831, first straight plate segment; 1832, first circular arc segment; 184, second stationary partition; 1841, second straight plate segment; 1842, second circular arc segment; 191, first partition plate; 1911, avoidance groove; 192, second partition plate;

[0109] 20, fresh air duct; 21, duct body; 211, first duct body channel; 212, second duct body channel; 213, duct partition plate; 22, pipe joint; 221, first joint channel; 222, second joint channel; 223, joint partition plate; 231, first duct channel; 2311, first fresh air outlet; 232, second duct channel; 2321, second fresh air outlet; 2322, branch pipe outlet;

[0110] 30, air outlet switching part; 31, switching housing; 311, switching air inlet; 312, first switching air outlet; 313, second switching air outlet; 314, circular cavity; 315, fixing seat; 32, air block; 321, central rotating shaft; 322, air block baffle; 3221, arc plate; 3222, support plate; 33, air block motor; 331, fixing lug plate;

[0111] 40, integrated switch part; 41, air baffle; 42, baffle rack; 43, integrated drive motor; 44, integrated gear;

[0112] 51, first indoor air outlet; 52, second indoor air outlet;

[0113] 6, air conditioner; 61, indoor unit shell; 611, first shell air outlet; 612, second shell air outlet; 613, shell air return; 62, indoor heat exchanger. DETAILED DESCRIPTION

[0114] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are for reference only and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, through multiple details, a sufficient understanding of the disclosed embodiments is provided. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0115] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0116] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. And, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0117] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0118] The term "and / or" is a descriptive term that refers to an association between items that can or can not be present. For example, A and / or B means that A or B, or both can be present.

[0119] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0120] The present application provides a fresh air module 1, which can be applied to air conditioning equipment such as wall-mounted air conditioners, fresh air machines, and humidifying machines, to achieve the functions of introducing outdoor fresh air alone, discharging indoor dirty air alone, and / or introducing outdoor fresh air and discharging indoor dirty air at the same time, thereby improving indoor air quality and enhancing environmental comfort.

[0121] As shown in Figure 1 and 1a , the fresh air module 1 mainly includes a module shell 10, a fresh air pipe 20, and an air outlet switching part 30. The module shell 10 is internally structured with an air cavity defining an airflow path, and can serve as a space for accommodating air filter elements 14, fan impellers 122, and the like. Here, the module shell 10 is provided with 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 being an air outlet through which the fresh air module 1 sends air to the indoor side, and the indoor return air outlet 113 being an air outlet through which air flows from the indoor side to the fresh air module 1. The outdoor air outlet 114 is an air outlet through which the fresh air module 1 discharges air to the outdoor side or the outdoor side delivers fresh air to the fresh air module 1. The fresh air pipe 20 extends from the indoor side to the outdoor side, and serves as a through-wall passage for introducing outdoor fresh air and / or discharging indoor dirty air. The fresh air pipe 20 is in communication with the air cavity of the module shell 10, thereby jointly defining an outdoor fresh air introduction path and / or an indoor dirty air discharge path. The air outlet switching part 30 is arranged at the air outlet side of the module shell 10, and is used to define the air outlet flow direction of at least part of the airflow flowing through the module shell 10. The at least part of the airflow includes outdoor fresh air or indoor dirty air, and the air outlet flow direction includes flowing to the indoor side or the outdoor side, thereby achieving the functions of introducing outdoor fresh air and / or discharging outdoor dirty air.

[0122] In some optional embodiments, in combination with Figure 2 , 2aAs shown in Figs. 2a and 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 in communication with the fan cavity 12, and air can flow between the air inlet cavity 11 and the fan cavity 12. The air inlet cavity 11 can be used to accommodate a partition component, an air filter 14, and the like, and the air inlet cavity 11 is in communication with one or more of the indoor air outlet, the outdoor air outlet 114. The fan cavity 12 can be used to accommodate an impeller 122 and the like, and the fan cavity 12 is in communication with one or more of the indoor air outlet, the outdoor air outlet 114.

[0123] Optionally, the air inlet cavity 11 is upstream of the fan cavity 12 in the air path, that is, the fan cavity 12 is located on the air outlet side of the air inlet cavity 11, thereby defining an air flow direction in the module housing 10 from the air inlet cavity 11 to the fan cavity 12. Alternatively, the air inlet cavity 11 is downstream of the fan cavity 12 in the air path, that is, the air inlet cavity 11 is located on the air outlet side of the fan cavity 12, thereby defining an air flow direction in the module housing 10 from the fan cavity 12 to the air inlet cavity 11. Hereinafter, the former structure in which the air inlet cavity 11 is upstream of the fan cavity 12 in the air path will be mainly described as an example.

[0124] In some embodiments, in combination with Figures 3a to 3e As shown in Figs. 2a and 2b, the air inlet cavity 11 includes a first sub-air inlet cavity 115 and a second sub-air inlet cavity 116, and the two are arranged separately, and the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 form a relatively independent air path respectively, and the air flowing into the air inlet cavity 11 is divided into the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116, and continues to be transported to the fan cavity 12 along the respective air paths. Optionally, a partition component is arranged in the air inlet cavity 11, and the partition component is used to separate the air inlet cavity 11 into the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116.

[0125] Optionally, the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 can respectively flow the air from the same air source, for example, the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 are simultaneously used to transport outdoor fresh air from the outdoor side, or simultaneously used to transport indoor dirty air from the indoor side. Alternatively, the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 can respectively flow the air from different air sources, for example, one of the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 is used to transport outdoor fresh air from the outdoor side, and the other is used to transport indoor dirty air from the indoor side. Here, the partition component can at least be used to separate the air paths when the two sub-air inlet cavities 11 transport air from different air sources, and to block or slow down the mixing of air with different cleanliness states.

[0126] Optionally, the overall outer profile of the air inlet cavity 11 is in 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 in Figure 3a and 3b . Wherein, the wall faces of 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 arranged on the outer circumferential side of the spacing space between the outer cavity wall 1115 and the air outlet cavity wall 1116, and 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 transverse two sides (long sides) of each side wall of the first side wall 1111, the second side wall 1112, the third side wall 1113 and the fourth side wall 1114 are respectively connected with the corresponding side of the outer cavity wall 1115 and the air outlet cavity wall 1116, and the longitudinal two sides (short sides) are respectively connected with the short sides of the adjacent other side walls.

[0127] In an embodiment, the first side wall 1111 and the second side wall 1112 are oppositely arranged, and the third side wall 1113 and the fourth side wall 1114 are oppositely arranged. For example, in combination with Figure 2b and 3b , the first side wall 1111 is arranged at the top position of the air inlet cavity 11, which is configured as the top surface of the air inlet cavity 11; the second side wall 1112 is arranged at the bottom position of the air inlet cavity 11, which is configured as the bottom surface of the air inlet cavity 11; the third side wall 1113 is arranged at the front side position of the air inlet cavity 11, which is configured as the front side surface of the air inlet cavity 11; and the fourth side wall 1114 is arranged at the rear side position of the air inlet cavity 11, which is configured as the back side surface of the air inlet cavity 11. In this example, the outer cavity wall 1115 is the left side surface of the air inlet cavity 11, and the air outlet cavity wall 1116 is the right side surface of the air inlet cavity 11.

[0128] Optionally, one or more of the first side wall 1111, the second side wall 1112, the third side wall 1113 and the fourth side wall 1114 are straight plate surfaces, for example, the third side wall 1113 and the fourth side wall 1114 shown in Figure 3a and 3b . Alternatively, one or more of the first side wall 1111, the second side wall 1112, the third side wall 1113 and the fourth side wall 1114 are non-straight plate surfaces, for example, the plate surfaces of the first side wall 1111 and the second side wall 1112 shown in Figure 2b and 3b are plate surface forms composed of multiple straight surface parts and / or arc surface parts.

[0129] In the embodiment, part of the side wall is designed in a non-linear plate form, which can realize the close cooperation of the air inlet cavity 11 and other components of the fresh air module 1, so as to reduce the number of air leakage gaps and reduce the air path resistance. For example, the arc surface part of the first side wall 1111 is adapted to the volute curve of the fan cavity 12, so that it is more closely connected with the corresponding position of the fan cavity 12, and the air tightness is better.

[0130] In some optional embodiments, the first side wall 1111, the second side wall 1112, the third side wall 1113, the fourth side wall 1114 and the outer cavity wall 1115 are integrated structures, thereby reducing the existence of air leakage gaps and improving the sealing of the air inlet cavity 11.

[0131] In the embodiment, in combination with Figure 3c As shown in the figure, the air inlet cavity outlet 112 is provided on the air outlet cavity wall 1116, and the air inlet cavity 11 is connected with the fan cavity 12 through the air inlet cavity outlet 112. In the embodiment, the air inlet cavity outlet 112 is at least covered on 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 cavity outlet 112.

[0132] Optionally, the air inlet cavity outlet 112 is configured in a regular shape such as a circle, an ellipse, a square or a trapezoid, or other irregular shapes. Here, the specific shape and size of the air inlet cavity outlet 112 can be set according to actual needs, and the present application does not limit this.

[0133] Further optionally, the air inlet cavity outlet 112 is provided with an air outlet grille, which can not only intercept large-volume sundries such as stones, paper balls and lint, but also has the effect of isolation and protection, so that the user's fingers will not be mistakenly inserted into the fan cavity 12 when replacing the air filter element 14, preventing being cut by the impeller 122 blade 1222.

[0134] Illustratively, the air outlet grille includes one or more circumferential grille bars and one or more radial grille bars. The plurality of circumferential grille bars are coaxially arranged and gradually increase in radius, and the plurality of circumferential grille bars are arranged on the same plane in a radial direction from inside to outside, and the plane is the plane where the air inlet cavity outlet 112 is located. And one end of each radial grille bar is connected to the central axis of the air inlet cavity outlet 112, and the other end extends radially outward, and the plurality of radial grille bars are arranged in a radial direction at the air inlet cavity outlet 112, and intersect with the circumferential grille bars. In this way, the circumferential grille bars and the radial grille bars are staggered and arranged, and together realize the function of interception and filtration.

[0135] In some optional embodiments, in combination with Figure 3a and3b As shown, the partition component includes a partition plate 15 arranged inside the air inlet cavity 11 and extending from one side wall to the opposite side wall of the air inlet cavity 11. Optionally, the plate body of 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 plate body of the partition plate 15 extends transversely 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 sub-zones arranged in front and back, that is, the first air inlet sub-cavity 115 and the second air inlet sub-cavity 116.

[0136] For example, in combination with Figure 3c and 3d As shown, the first air inlet sub-cavity 115 is located in the front side space region of the air inlet cavity 11, which 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 respectively near the front side of the wall surface; the second air inlet sub-cavity 116 is located in the rear side space region of the air inlet cavity 11, which 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 respectively near the rear side of the wall surface.

[0137] In the embodiment, the plate body extends transversely to the air outlet cavity wall 1116, which also divides the air inlet cavity air outlet 112 into a first air outlet sub-cavity and a second air outlet sub-cavity. Among them, the first air inlet sub-cavity 115 is connected to the first air outlet sub-cavity, and the second air inlet sub-cavity 116 is connected to the second air outlet sub-cavity.

[0138] Optionally, from the perspective of the longitudinal section of the partition plate 15, the plate body line shape of the partition plate 15 is configured as a straight line shape, a curved line shape, a broken line shape, or a plate body form spliced by one or more straight line shapes and / or one or more curved line shapes. Here, the plate body line shape of the partition plate 15 can be adjusted according to the cavity volume distribution, air resistance and other factors in the air inlet cavity 11, for example, in the case where the cavity volume of the first air inlet sub-cavity 115 is required to be larger than that of the second air inlet sub-cavity 116, the partition plate 15 can be configured as a curved or broken line line shape with the plate surface protruding towards the second air inlet sub-cavity 116, to increase the actual space allocated to the first air inlet sub-cavity 115. Or, in the case where the cavity volumes of the first air inlet sub-cavity 115 and the second air inlet sub-cavity 116 are required to be approximately equal, the partition plate 15 can be configured as a straight line shape and arranged at the center line position of the air inlet cavity 11, to achieve equal distribution of space for the two air inlet sub-cavities 11.

[0139] In an 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 outdoor fresh air volume delivered to the indoor side via the first sub-air inlet cavity 115 is greater than the outdoor polluted air volume delivered to the outdoor side via the second sub-air inlet cavity 116, thereby achieving a positive pressure air supply effect.

[0140] In yet some optional embodiments, the fresh air module 1 further comprises 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 dust, PM2.5 and other air pollutants in the air.

[0141] Optionally, the air filter 14 is arranged in one of the air inlet cavity 11 and the fan cavity 12. For example, as shown in Figs. Figure 4 4a and 4b, the air filter 14 is arranged in the air inlet cavity 11, which can adsorb and intercept air pollutants when the air flows through the air inlet cavity 11. In this way, not only can the air quality be effectively improved, but also the problem of fan impeller 122 wear caused by the entry of sand and other large particles into the fan cavity 12 can be reduced. In the present embodiment, the air filter 14 is arranged close to the air outlet cavity wall 1116 of the air inlet cavity 11 to better fit and cover the air outlet 112 of the air inlet cavity, so that most of the airflow flowing to the air outlet 112 of the air inlet cavity can pass through the air filter 14 for purification and filtration.

[0142] The air filter 14 itself has a limitation on adsorption saturation. After the fresh air module 1 is used for a long time, the air filter 14 gradually reaches its upper limit of adsorption capacity, at which time the air filter 14 needs to be cleaned and replaced in time. In this embodiment, the air filter 14 is detachably arranged in the fresh air module 1, so that the user can perform self-dismantling operation on the air filter 14 when needed. Optionally, the air filter 14 is pullably arranged in the air inlet cavity 11, and the user can pull out the air filter 14 in a dirty state from the fresh air cavity, or push the air filter 14 in a brand-new state into the fresh air cavity.

[0143] Optionally, a socket 117 is arranged on the outer side wall of the air inlet cavity 11, and the air filter 14 can be moved in and out of the air inlet cavity 11 via the socket 117. Here, in combination with the foregoing embodiments, the outer side wall on which the socket 117 is arranged 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. As shown in Fig. Figure 4b As shown in Fig. 4b, the socket 117 is arranged on the third side wall 1113 of the air inlet cavity 11, and the third side wall 1113 is the side wall of the air inlet cavity 11 close to the front side and facing the user, so that the socket 117 is positioned to make it more convenient for the user to perform pulling operation. In the present embodiment, the shape and size of the socket 117 are adapted to the cross-sectional shape and size of the air filter 14. ​

[0144] In the foregoing embodiment, the plate body of the partition plate 15 extends in the transverse direction from the outer cavity wall 1115 to the air outlet cavity wall 1116, and thus the air filter element 14 inserted into the air inlet cavity 11 also covers the path in the transverse direction of the plate body. In order to avoid the structural interference between the partition plate 15 and the air filter element 14, the present embodiment further has a slot 118 for the air filter element 14 to be pulled out, which can make the partition plate 15 avoid the air filter element 14 and arrange them in the air inlet cavity 11 without affecting each other, as shown in Figure 4c .

[0145] Optionally, the vertical height of the slot 118 is greater than or equal to the vertical length of the air filter element 14, and / or the axial width of the slot 118 is greater than or equal to the transverse length of the air filter element 14. In this way, it can be ensured that the slot 118 does not block the air in / out.

[0146] In some optional embodiments, the slot 118 is a side surface of the partition plate 15 corresponding to the air outlet cavity wall 1116, which is recessed in the axial direction of the air inlet cavity 11, as shown in Figure 4c . In the embodiment, the slot type of the slot 118 is matched with the cross-sectional shape of the air filter element 14 to reduce the air leakage gap formed by the edges 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 the slot type of the slot 118 is also configured as a rectangular groove.

[0147] Optionally, the slot depth of the slot 118 is less than or equal to 1 / 2 of the axial length of the partition plate 15. For example, the slot depth of the slot 118 is set to 1 / 3, 1 / 4, etc. of the axial length of the partition plate 15. Here, the slot size can not be too large to affect the structural strength of the partition plate 15, and at the same time, since the air inside the air filter element 14 flows freely and has no space separation effect, limiting the slot depth of the slot 118 can also reduce the adverse effect of the air filter element 14 on the space separation effect of the air inlet cavity 11. For example, the slot depth of the slot 118 is l, and the axial length of the partition plate 15 is L, which needs to meet the size design requirement of l≤L / 2.

[0148] In some embodiments, the air outlet cavity wall 1116 of the air inlet cavity 11 is provided with a partition rib 16, which is protruded from the wall surface of the air outlet cavity wall 1116 towards the outer cavity wall 1115, which can cooperate with the partition plate 15 to form the slot 118, as shown in Figure 4d .

[0149] In combination with Figure 4c and 4dThe slot 118 formed in the partition plate 15 corresponds to the lateral side and the longitudinal sides of the air filter element 14, and the partition rib 16 corresponds to the other lateral side of the air filter element 14. In this way, the partition rib 16 can substantially enhance the close fit of the air filter element 14 to one side of the air outlet cavity wall 1116, reduce the air leakage gap, and further improve the space partitioning effect of the air inlet cavity 11.

[0150] In an embodiment, the partition rib 16 is linearly consistent with the partition plate 15, and the positions of the partition rib 16 and the partition plate 15 coincide in the axial direction. In this way, the air flow path of the “partition plate 15-partition rib 16” part does not form an additional protrusion, and the flow path is smooth, avoiding the wind resistance effect on the air. For example, if the extension line of the partition plate 15 is linear, the partition rib 16 is also adaptively configured in the form of a linear protrusion. Alternatively, if the extension line of the partition plate 15 is arc-shaped, the partition rib 16 is adaptively configured in the form of an arc-shaped protrusion.

[0151] In yet some alternative embodiments, the slot 118 is a channel structure formed in the thickness direction of the partition plate 15. Here, the slot 118 is formed in the middle of the partition plate 15 or the portion close to one side of the air outlet cavity wall 1116, and is formed through in the thickness direction of the partition plate 15.

[0152] In the present 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 at a position close to the first side wall 1111, the second slot edge is located at a position close to the second side wall 1112, the third slot edge is located at a position close to the outer cavity wall 1115, and the fourth slot edge is located at a position close to the air outlet cavity wall 1116. The four slot edges collectively form the slot 118 for inserting the air filter element 14. Compared with the form in which the slot 118 is collectively formed by the partition plate 15 and the partition rib 16 in the previous embodiment, the present embodiment does not need to provide the partition rib 16 on the air outlet cavity wall 1116, thereby simplifying the structure of the air inlet cavity 11.

[0153] In some embodiments, an elastic sealing member is provided on the inner circumferential edge of the slot 118, which can be used to block the assembly gap between the slot 118 and the air filter element 14, so as to reduce the air leakage amount of the assembly gap. Optionally, the elastic sealing member is provided on at least one inner circumferential edge of the slot 118. For example, for the slot 118 shown in the form of a U-shaped slot, the elastic sealing member can be provided on any slot edge of the U-shaped slot, and / or on the edge of the partition rib 16 corresponding to the air filter element 14. Figure 4c

[0154] Optionally, the elastic sealing member can be of a rubber strip, wool strip, or the like. The elastic sealing member can be fixedly connected to the inner circumferential edge of the slot 118 by means of gluing, clamping, or the like.

[0155] ​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.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] Here, the filter core partition strip 141 is in the form of a flat plate, with its lateral direction extending from the side close to the partition plate 15 to the side close to the partition rib 16 along the air filter core 14, and its longitudinal direction extending from the top surface to the bottom surface of the air filter core 14.

[0161] In combination Figure 4a As shown, the filter core partition strip 141 divides the air filter core 14 into a first filter core portion 142 and a second filter core portion 143. The first filter core portion 142 is located on the side corresponding to the first sub-air inlet cavity 115, and can be used to filter and purify the air flowing through the first sub-air inlet cavity 115; the second filter core portion 143 is located on the side corresponding to the second sub-air inlet cavity 116, and can be used to filter and purify the air flowing through the second sub-air inlet cavity 116. Due to the partitioning effect of the filter core partition strip 141, the air flowing through the first filter core portion 142 will not flow to the second filter core portion 143, and similarly, the air flowing through the second filter core portion 143 will not flow to the first filter core portion 142, thereby avoiding the mixing of the air of the two sub-air inlet cavities 11 in the air filter core 14.

[0162] Optionally, the filter core partition strip 141 is consistent with the linear shape of the partition plate 15, and is located in the axial direction. In this way, the air flow path formed by the partition plate 15, the filter core partition strip 141, and the partition rib 16 will not form an additional protrusion, and the flow path will be smooth, effectively reducing the air flow resistance. For example, if the extension linear shape of the partition plate 15 is in the form of a straight line, then the filter core partition strip 141 is also constructed in the form of a straight line plate; or, if the extension linear shape of the partition plate 15 is in the form of an arc line, then the filter core partition strip 141 is also constructed in the form of an arc line plate. Here, the thickness of the partition plate 15, the filter core partition strip 141, and the partition rib 16 is substantially the same, so as to ensure the smoothness of the air flow path plane.

[0163] In yet other embodiments, in combination Figures 5 to 5e As shown, the fan cavity 12 includes a fan volute 121 and an impeller 122, which is rotatably arranged inside the fan volute 121 and is used to rotate to generate driving air flow through the module housing 10. In this embodiment, the impeller 122 can at least drive the air to flow from the air inlet cavity 11 to the fan cavity 12.

[0164] In an embodiment, the fan volute 121 is constructed in a detachable split structure, such as Figure 5cAs shown, the fan volute 121 includes a first volute part 1211 and a second volute part 1212, and the detachable design can facilitate the impeller 122 to be loaded into or removed from the fan volute 121, and facilitate the assembly and replacement and maintenance of the fan volute 121. Here, the first volute part 1211 is located on one side close to the air inlet cavity 11, and the second volute part 1212 is located on one side of the air inlet cavity 11, and the two are combined to form the fan volute 121. Optionally, the first volute part 1211 and the second volute part 1212 can be fixed by clamping, screwing, riveting and the like, and have the advantages of firm connection and quick disassembly and assembly.

[0165] The fan volute 121 has a volute air inlet 123 for communicating with the air outlet 112 of the air inlet cavity 11, so that air enters the fan volute 121 through the air outlet 112 of the air inlet cavity 11 and the volute air inlet 123 in sequence. In this embodiment, the volute air inlet 123 is formed on the first volute part 1211, and the shape and size of the volute air inlet 123 are adapted to the air outlet 112 of the air inlet cavity 11. For example, the outlet of the air inlet cavity 11 is a circular air outlet, and correspondingly, the volute air inlet 123 is also configured in the form of a circular air outlet.

[0166] Optionally, the first volute part 1211 and the air outlet cavity wall 1116 are integrated, that is, the first volute part 1211 and the air outlet cavity wall 1116 are respectively on two side surfaces of the same housing, the first volute part 1211 is on one side corresponding to the impeller 122, and the air outlet cavity wall 1116 is on one side corresponding to the air filter element 14. Moreover, the air outlet 112 of the air inlet cavity wall 1116 and the volute air inlet 123 of the first volute part 1211 are also integrated into the same air outlet. In this way, the number of components of the module housing 10 can be reduced, and the overall structure is simplified.

[0167] In some embodiments, in combination Figure 6 As shown, the impeller 122 includes a hub 1221 and a plurality of blades 1222. The hub 1221 is configured in the form of a ring structure, and the internal space thereof is used as an air inlet channel 1223 of the impeller 122, which is formed in the axial direction of the impeller 122. The number of hubs 1221 is two, and they are coaxially and spaced apart, and the space between the two hubs 1221 is used as a space for accommodating a plurality of blades 1222. Here, each blade 1222 is configured in the form of a strip-shaped sheet structure, and one end thereof is fixed to one of the hubs 1221 and the other end is fixedly connected to the other hub 1221. From the projection direction of the axis of the hub 1221, each blade 1222 is arranged at equal intervals along the outer circumferential line of the hub 1221 and is arranged obliquely relative to the outer circumferential line of the hub 1221, so that after the air enters the air inlet channel in the axial direction of the impeller 122, it is driven by the blades 1222 to diffuse radially outward, and enters the housing space of the fan volute 121.

[0168] In embodiments, the plurality of blades 1222 are evenly arranged along the outer circumferential line, and collectively form the air inlet channel 1223.

[0169] Optionally, the impeller 122 has a first rotation direction or a second rotation direction, the first rotation direction being opposite to the second rotation direction. In the axial direction from the air inlet cavity 11 to the fan cavity 12, the first rotation direction is clockwise, and the second rotation direction is counterclockwise.

[0170] In the foregoing optional embodiments, the fresh air module further comprises an impeller driver 126, which is in driving connection with the impeller 122, and is used to drive the impeller 122 to rotate in the fan cavity 12.

[0171] In some optional embodiments, the module housing 10 is provided with 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 send air to different directions respectively, so as to achieve a multi-angle and wide-range air sending effect.

[0172] Optionally, the first indoor air outlet 51 is used to send air to one of the front side, the rear side, the top side, the bottom side, the left side or the right side of the fresh air module 1, and the second indoor air outlet 52 is used to send air to another of the front side, the rear side, the top side, the bottom side, the left side or the right side of the fresh air module 1. Figure 5 and 5a In the illustrated embodiments, the first indoor air outlet 51 is used to send air to the front-up direction, and the second indoor air outlet 52 is used to send air to the down-front direction.

[0173] In some optional embodiments, the module housing 10 further comprises a first air outlet duct 13, which is connected to the module housing 10 and located at the air outlet side of the air inlet cavity 11 (the fan cavity 12), and is used to form the first indoor air outlet 51 as an air outlet path, through which the air outlet flow of the air inlet cavity 11 (the fan cavity 12) can be delivered to the external environment. Similarly, the module housing 10 further comprises a second air outlet duct, which is connected to the module housing 10 and located at the air outlet side of the air inlet cavity 11 (the fan cavity 12), and is used to form the second indoor air outlet 52 as an air outlet path, through which the air outlet flow of the air inlet cavity 11 (the fan cavity 12) can be delivered to the external environment.

[0174] In the above embodiments, by changing the extension direction of the first air outlet duct 13 (and the second air outlet duct) or the orientation of the duct air outlet end, the actual air sending direction can be adjusted. For example, in the foregoing embodiments, the first indoor air outlet 51 is used to send air to the front-up direction, and the corresponding first air outlet duct 13 can be extended and formed towards the front-up direction, and the duct air outlet end thereof faces the front-up direction.

[0175] Here, the fan cavity 12 is provided at the air outlet side of the air inlet cavity 11, and the first indoor air outlet 51 and the second indoor air outlet 52 are respectively communicated with the fan cavity 12 through the fan cavity 12. In the embodiment, the first indoor air outlet 51 and the second indoor air outlet 52 are respectively communicated with the outer peripheral shell wall of the fan volute 121, wherein the first indoor air outlet is communicated with the top position of the outer peripheral shell wall, and the second indoor air outlet 52 is communicated with the bottom position of the outer peripheral shell wall. In the fan cavity 12, the impeller 122 rotates downward, and the air located upstream of the rotation direction of the first indoor air outlet 51 will preferentially and concentratedly flow to the first indoor air outlet 51, as shown by the solid arrow airflow in Figure 7 , and the air located upstream of the rotation direction of the second indoor air outlet 52 will preferentially and concentratedly flow to the second indoor air outlet 52, as shown by the dashed arrow airflow in Figure 7 .

[0176] In some embodiments, as shown in Figure 5b and 5c , the fan volute 121 is provided with a first volute air outlet 124 and a second volute air outlet 125. The first volute air outlet 124 is provided at the top position of the outer peripheral shell wall of the fan volute 121, and is used to communicate the fan volute 121 and the first indoor air outlet 51, so that at least part of the airflow in the fan volute 121 is transported to the first indoor air outlet 51 through the first volute air outlet 124. The second volute air outlet 125 is provided at the bottom position of the outer peripheral shell wall of the fan volute 121, and is used to communicate the fan volute 121 and the second indoor air outlet 52, so that at least part of the airflow in the fan volute 121 is transported to the second indoor air outlet 52 through the second volute air outlet 125.

[0177] In the first rotation direction of the impeller 122 shown in Figure 7 , the first indoor air outlet 51 is arranged corresponding to the first sub-air inlet cavity 115 and located in the middle and lower reaches of the rotation flow direction of the impeller 122, that is, the airflow flowing into the fan volute 121 from the first sub-air inlet cavity 115 is located in the middle and upper reaches of the first indoor air outlet 51, so that the airflow flowing through the first sub-air inlet cavity 115 will flow to the first indoor air outlet 51, and most of the airflow will be sent out through the first indoor air outlet 51. Similarly, the second indoor air outlet 52 is arranged corresponding to the second sub-air inlet cavity 116 and located in the middle and lower reaches of the rotation flow direction of the impeller 122, that is, the airflow flowing into the fan volute 121 from the second sub-air inlet cavity 116 is located in the middle and upper reaches of the second indoor air outlet 52, so that the airflow flowing through the second sub-air inlet cavity 116 will flow to the second indoor air outlet 52, and most of the airflow will be sent out through the second indoor air outlet 52.

[0178] In the embodiment, the first volute air outlet 124 comprises a first outer extension segment 1241 away from the volute axis and a first volute tongue segment 1242 close to the volute axis, the first outer extension segment 1241 and the first volute tongue segment 1242 are oppositely spaced, and the spacing space between the two is used as an air flow passage, as shown in Figure 5d Similarly, the second volute air outlet 125 comprises a second outer extension segment 1251 away from the volute axis and a second volute tongue segment 1252 close to the volute axis, the second outer extension segment 1251 and the second volute tongue segment 1252 are oppositely spaced, and the spacing space between the two is used as an air flow passage, as shown in Figure 5e Optionally, the first sub-air inlet cavity 115 delivers air flow to the fan cavity 12 mainly in the coverage of the second volute tongue segment 1252 to the first volute tongue segment 1242 in the first rotation direction, as shown in the A range area in Figure 8 Similarly, the second sub-air inlet cavity 116 delivers air flow to the fan cavity 12 mainly in the coverage of the first volute tongue segment 1242 to the second volute tongue segment 1252 in the first rotation direction, as shown in the B range area in Figure 8 Similarly, the second sub-air inlet cavity 116 delivers air flow to the fan cavity 12 mainly in the coverage of the first volute tongue segment 1242 to the second volute tongue segment 1252 in the first rotation direction, as shown in the B range area in

[0179] To achieve the division of the two air delivery coverage areas mentioned above, correspondingly, in the axial projection of the partition plate 15 relative to the direction of the fan volute 121, the longitudinal first end (longitudinal top end) of the partition plate 15 extends to the shell wall close to the first volute tongue segment 1242, and the longitudinal second end (longitudinal bottom end) extends to the shell wall close to the second volute tongue segment 1252, as shown in Figure 8 .

[0180] In the embodiment, the plate body of the partition plate 15 extends in a curve, and the curve direction corresponds to the air outlet direction of the first volute air outlet 124 and the second volute air outlet 125, so as to reduce the air resistance during the air flow through the plate surface of the partition plate 15 and reduce the wind pressure loss.

[0181] As shown in Figure 3e , the partition plate 15 comprises a first arc plate segment 151, a second arc plate segment 152, and an intermediate arc plate segment 153. Among them, in the axial projection of the partition plate 15 relative to the direction of the fan volute 121, the upper end of the first arc plate segment 151 extends to the shell wall close to the first volute tongue segment 1242, and the lower end is formed in extension along the curve direction of the first volute tongue segment 1242 of the fan volute 121 towards the axis of the fan volute 121. And, also in the axial projection of the partition plate 15 relative to the direction of the fan volute 121, the lower end of the second arc plate segment 152 extends to the shell wall close to the second volute tongue segment 1252, and the upper end is formed in extension along the curve direction of the second volute tongue segment 1252 of the fan volute 121 towards the axis of the fan volute 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 152 towards the axis, that is, the lower end of the first arc plate segment 151 and the upper end of the second arc plate segment 152 are respectively connected.

[0182] In the present embodiment, in combination 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 more smooth in the process of flowing through the air inlet cavity 11, the fan cavity 12 and finally being divided into the first volute air outlet 124 and the second volute air outlet 125, and the resistance influence caused by the cavity wall on the airflow flow is reduced.

[0183] Optionally, the extension curve of the first arc segment can be a curve track with the same curvature as the first volute tongue segment 1242, or a curve track with an acute angle included angle with the curve of the first volute tongue segment 1242. Similarly, the extension curve of the second arc segment can be a curve track with the same curvature as the second volute tongue segment 1252, or a curve track with an acute angle included angle with the curve of the second volute tongue segment 1252. In addition, the curve track of the first arc plate segment 151 and the second arc plate segment 152 respectively has a tendency to bend and extend towards the axis of the fan volute 121, rather than necessarily pointing to the axis.

[0184] Optionally, the first arc plate segment 151, the second arc plate segment 152 and the intermediate arc plate segment 153 adopt an integrated structure, so that there is no air leakage gap between the plate segments of the partition plate 15, and the sealing performance of the air inlet cavity 11 is improved.

[0185] It should be understood that the extension direction of the partition plate 15 and the setting position of the longitudinal two end points in the present embodiment are mainly set according to factors such as the opening position of the two indoor air outlets and the rotation direction of the impeller 122. For example, in the embodiment, the two indoor air outlets are respectively located at the upper and lower sides of the fan cavity 12, so the partition plate 15 also extends vertically as a whole. When the arrangement position of the indoor air outlet is changed, such as front and rear air outlets, the extension direction of the partition plate 15 also needs to be adaptively adjusted. Therefore, based on the technical concept disclosed in the present application, other deformation adjustment schemes of the indoor air outlet opening position and the form of the partition plate 15 according to the actual air supply needs should also be covered within the protection scope of the present application.

[0186] In still some embodiments not shown in the drawings, the partition member comprises a first partition portion and / or a second partition portion.

[0187] The first partition portion is arranged in the air inlet passage 1223, and is used to divide the air inlet passage 1223 into a first air inlet region and a second air inlet region. The airflow in the first air inlet region is inclined to flow to the first volute air outlet 124, and the airflow in the second air inlet region is inclined to flow to the second volute air outlet 125.

[0188] In this embodiment, a partition component is provided in the air inlet channel 1223 of the impeller 122 of the fan cavity 12. This partition component can divide the air inlet channel 1223 into two air inlet areas, which can effectively reduce the mixing of airflow between the two air inlet areas, so that the air in each part of the two air inlet areas can be more biased towards the corresponding air outlet for air delivery, thereby enhancing the air diversion and air delivery effect of the fresh air module 1.

[0189] Optionally, the first partition includes a first partition plate, the plate extending longitudinally from one side of the impeller 122 axis blade 1222 to the other side of the axis blade 1222, with the longitudinal ends of the first partition plate spaced apart from the inner edges of the corresponding blades 1222. This not only reduces the air leakage gap between the longitudinal ends of the first partition plate and the inner edges of the blades 1222, thus reducing airflow mixing between the first and second air inlet areas, but also prevents structural interference between the first partition plate and the impeller 122, which could lead to collisions, deformation, or damage between the first partition plate and the blades 1222.

[0190] In this embodiment, the air inlet channel 1223 extends axially along the impeller 122, so the air entering the air inlet channel 1223 is also vortexed and diverted to the air outlet side by the blades 1222 in the entire axial direction. Correspondingly, the first partition plate extends laterally from the air inlet side of the air inlet channel 1223 along the impeller 122 axially, so as to cover the axial extension range of the air inlet channel 1223 and improve the partitioning effect of the internal space of the air inlet channel 1223.

[0191] Optionally, the first partition can be a straight plate or a non-straight plate. Further, the non-straight plate includes curved, polygonal, or other shapes, or a plate form composed of one or more straight segments and / or one or more curved segments spliced ​​together.

[0192] In some embodiments, a second partition is disposed within the air inlet cavity 11, dividing the air inlet cavity 11 into a first sub-air inlet cavity 115 and a second sub-air inlet cavity 116. The first sub-air inlet cavity 115 corresponds to a first air inlet region, so that the airflow from the first sub-air inlet cavity 115 flows towards the first air inlet region, and the second sub-air inlet cavity 116 corresponds to a second air inlet region, so that the airflow from the second sub-air inlet cavity 116 flows towards the second air inlet region. Thus, through the cooperation of the second partition and the first partition, the fresh airflow and the stale airflow maintain a separated airflow path as they flow through the air inlet cavity and the fan cavity, improving the air distribution effect.

[0193] In this embodiment, the second partition includes a second partition plate, the plate extending longitudinally from one side wall of the air inlet cavity 11 to the other side wall. Optionally, the second partition plate is as described above. Figures 3a to 3e The partition plate shown in the embodiment is illustrated.

[0194] Alternatively, the extension trajectory of the second partition plate is consistent with that of the first partition plate to ensure the consistency and smoothness of the partition surface formed by the second and first partition plates from the air inlet cavity 11 to the fan cavity 12. Here, the extension lengths of the second and first partition plates may be the same or different. For example, if the cavity space of the air inlet cavity 11 is larger than the diameter of the air inlet channel 1223, the extension length of the first partition plate will be shorter than that of the second partition plate. In this case, the extension trajectory of the first partition plate is partially consistent with that of the second partition plate.

[0195] In some embodiments, the second partition and the first partition are integrally formed, which can effectively ensure the stability of the connection between the two partitions and prevent the formation of additional air leakage gaps between them.

[0196] In some embodiments, the fresh air module further includes an air outlet group, which includes a first air outlet and a second air outlet. Here, the air outlet group is located within the fan cavity 12 of the fresh air module, with the first air outlet corresponding to a first air inlet area and the second air outlet corresponding to a second air inlet area. Due to the separation effect of the second partition plate and the downward rotation of the fan cavity, the airflow in the first air inlet area is biased towards the first air outlet, and the airflow in the second air inlet area is biased towards the second air outlet. Optionally, the first air outlet is the first volute air outlet 124 in the preceding embodiment, and the second air outlet is the second volute air outlet 125.

[0197] In some alternative embodiments, at least a portion of the impeller driver 126 is located within the air inlet channel 1223 of the impeller 122. Correspondingly, the first partition plate is formed with a clearance groove to avoid the impeller driver 126, thereby preventing the first partition plate from interfering with the impeller driver 126 during rotation.

[0198] Here, the clearance groove is spaced apart from the impeller driver 126, and the gap between the edge of the groove and the impeller driver 126 is minimized as much as possible while avoiding contact, so as to improve the airtightness and reduce the mixing of airflow between the two air intake areas in the air intake channel 1223 through the gap.

[0199] 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.

[0200] 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.

[0201] 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, combined 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.

[0202] 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.

[0203] 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.

[0204] 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.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] 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.

[0209] 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.

[0210] 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.

[0211] 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.

[0212] 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.

[0213] 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.

[0214] 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.

[0215] 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.

[0216] 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.

[0217] 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.

[0218] 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.

[0219] 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.

[0220] 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.

[0221] 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.

[0222] Here, the duct switch includes a duct baffle and a second actuator. The duct baffle is driven to connect with the second actuator, so that the duct baffle is driven to close or open the second fresh air outlet 2321.

[0223] 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.

[0224] 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.

[0225] 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.

[0226] 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.

[0227] 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.

[0228] 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.

[0229] 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.

[0230] 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.

[0231] 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.

[0232] 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.

[0233] 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.

[0234] 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.

[0235] 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.

[0236] 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.

[0237] Combination Figure 18b As shown, the air outlet switching unit 30 includes a switching housing 31 and an air plug assembly.

[0238] 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.

[0239] 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.

[0240] 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.

[0241] 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.

[0242] 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.

[0243] 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.

[0244] 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.

[0245] 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.

[0246] 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.

[0247] 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.

[0248] The partition plate 15 shown in the previous embodiment is fixed in the internal space of the air inlet cavity 11. The relative position of the partition plate 15 and the cavity of the air inlet cavity 11 is immutable, which makes the cavity space of the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 basically fixed. This limits the application range of the fresh air module and cannot meet certain enhanced functional needs of users. For example, when the air quality difference between indoor and outdoor environments is not large, but the temperature difference is large, some users may want to appropriately reduce the outdoor fresh air input to reduce the disturbance of outdoor fresh air to indoor temperature. In view of the above, in some alternative embodiments, the partition component provided in the fresh air module 1 is designed to be movable, so that the partition component can move relative to the inner cavity of the module shell 10. During the movement, the cavity space of the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 is changed, thereby achieving the effect of changing the outdoor fresh air volume delivered by the first sub-air inlet cavity 115 and / or the indoor stale air volume delivered by the second sub-air inlet cavity 116.

[0249] In some embodiments, the partition component is movably disposed within the air inlet cavity 11 of the module housing 10, and its relative position to the air inlet cavity 11 can be controlled to change the cavity space of the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116. In this embodiment of the present disclosure, the fresh air module 1 has the partition component movably disposed within the air inlet cavity 11, so that during the movement of the partition component, the cavity space of the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 formed by its partition can be changed, thereby achieving the effect of adjusting the fresh air intake volume and the stale air exhaust volume.

[0250] Optionally, the separation component can be adjusted relative to the air inlet cavity 11 by rotating, sliding, or other means.

[0251] Here, the air inlet outlet 112 is located on the air outlet wall 1116. This separating component divides the air inlet outlet 112 into a first sub-outlet and a second sub-outlet. The first sub-outlet and the second sub-outlet correspond to the first sub-inlet 115 and the second sub-inlet 116, respectively, serving as the paths for the airflow from each sub-inlet to the fan chamber 12. Thus, during the rotation, sliding, or other operations of the separating component relative to the inlet 11, the relative position of the separating component and the air inlet outlet 112 can be changed, altering the boundary between the separating component and the first and second sub-outlets. This, in turn, changes the outdoor fresh air volume of the first sub-inlet 115 and / or the indoor stale air volume of the second sub-inlet 116.

[0252] Specifically, in some alternative embodiments, combined with Figures 22a to 22c As shown, the partition component is pivotally connected to the air inlet cavity 11, allowing it to rotate relative to the air inlet cavity 11, thereby adjusting its relative position to the air inlet cavity 11. In this embodiment, the partition component includes a movable partition 181 and a partition driver 182, which can drive the movable partition 181 to rotate within the air inlet cavity 11.

[0253] Here, the movable baffle 181 is pivotally connected to the air inlet cavity 11, and its plane of rotation is parallel to the wall surface of the air outlet cavity wall 1116. Optionally, the movable baffle 181 is pivotally connected to another cavity wall of the air inlet cavity 11 opposite to the air outlet cavity wall 1116, namely the outer cavity wall 115 in the previous embodiment, which has a through hole for the motor shaft to pass through. The baffle actuator 182 includes a baffle drive motor and a motor shaft, such as Figure 22d As shown, the partition drive motor is fixed to the outer wall of the outer cavity wall, and its motor shaft extends into the air inlet cavity 11 through the above-mentioned through hole and is fixedly connected to the movable partition 181, so that the partition drive motor can drive the movable partition 181 to rotate through the rotation of the motor.

[0254] In this embodiment, the partition drive motor is a bidirectional rotating motor type, which can selectively drive the partition 181 to rotate in a clockwise or counterclockwise direction.

[0255] In this embodiment, similar to the partition plate shown in the previous embodiment, the movable partition 181 surrounds at least a portion of the cavity wall of the air inlet cavity 11 to form a first sub-air inlet cavity 115, and surrounds at least another portion of the cavity wall of the air inlet cavity 11 to form a second sub-air inlet cavity 116. Thus, when the movable partition 181 rotates axially within the air inlet cavity 11, it can change the cavity space of the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 it surrounds.

[0256] In an optional embodiment, the longitudinal ends of the movable partition 181 extend to the side walls of their corresponding air inlet chambers 11, such as the first side wall 1111 and the second side wall 1112 of the air inlet chamber 11 in this embodiment. Here, the longitudinal ends of the movable partition 181 are defined as the first outer plate end and the second outer plate end, respectively. Also, the lateral sides of the movable partition 181 extend to the side walls of their corresponding air inlet chambers 11, such as the air outlet wall 1116 and the outer cavity wall 1115 of the air inlet chamber 11 in this embodiment. Here, the longitudinal ends and lateral side walls of the movable partition 181 are spaced apart from their respective side walls to allow for rotation, preventing the side walls of the air inlet chamber 11 from obstructing the rotation of the movable partition 181.

[0257] In conjunction with the preceding embodiments, an outdoor air vent 114 and an indoor return air vent 113 are spaced apart on the second sidewall 1112. The outdoor air vent 114 is used to supply fresh outdoor air to the first sub-intake chamber 115, and the indoor return air vent 113 is used to supply stale indoor air to the second sub-intake chamber 116. Optionally, the rotation range of the movable partition 181 is limited so that its longitudinal end corresponding to the second sidewall 1112 is always located between the outdoor air vent 114 and the indoor return air vent 113, so that the outdoor air vent 114 always corresponds to the first sub-intake chamber 115, and the indoor return air vent 113 always corresponds to the second sub-intake chamber 116.

[0258] Optionally, the air inlet cavity 11 is constructed as a cavity with an overall outer contour that is circular or approximately circular, and the rotation axis of the movable baffle 181 is located at the center of the air inlet cavity 11. In this way, the two longitudinal ends of the movable baffle 181 extend to the inner circumference of the air inlet cavity 11, and can be driven by the baffle driver 182 to rotate along the circumferential direction of the air inlet cavity 11.

[0259] Alternatively, the movable partition 181 can be a straight plate or a non-straight plate. Optionally, the non-straight plate includes curved, broken line, and other shapes, or a plate form composed of one or more straight segments and / or one or more curved segments spliced ​​together.

[0260] In some alternative embodiments, the partition further includes one or more stationary partitions that can cooperate with the movable partition 181 to jointly define the respective sub-inlet chambers and / or the rotation area where the movable partition 181 is located.

[0261] Specifically, combined Figure 22c As shown, the partition includes a first static partition 183 and / or a second static partition 184. Optionally, the first static partition 183 is disposed on the side wall of the air inlet cavity 11 where the outdoor air vent 114 and the indoor return air vent 113 are located, such as... Figure 22c The second sidewall 1112 extends into the air inlet cavity 11; the first static partition 183 serves to separate the outdoor air vent 114 and the indoor return air vent 113, thus confining the outdoor air vent 114 within the space of the first sub-air inlet cavity 115 and the indoor return air vent 113 within the space of the second sub-air inlet cavity 116. Alternatively, the second static partition 184 is disposed on the opposite sidewall to the sidewall where the first static partition 183 is located, such as... Figure 22c The first sidewall 1111 extends towards the inner side of the air inlet cavity 11; the second static partition 184 can separate the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116.

[0262] In this embodiment, the first static partition 183 and the second static partition 184 are spaced apart, and the rotation area of ​​the moving partition 181 is located in the space between them.

[0263] Thus, one side of the moving baffle 181, one side of the first stationary baffle 183, one side of the second stationary baffle 184, and at least a portion of the cavity wall of the air inlet cavity 11 jointly enclose to form a first sub-air inlet cavity 115; here, at least a portion of the cavity wall of the air inlet cavity 11 may include an outer cavity wall 1115, an air outlet cavity wall 1116, a first side wall 1111, a second side wall 1112, and a fourth side wall 1114. Furthermore, the other side of the moving baffle 181, the other side of the first stationary baffle 183, the other side of the second stationary baffle 184, and at least another portion of the cavity wall of the air inlet cavity 11 jointly enclose to form a second sub-air inlet cavity 116; here, at least a portion of the cavity wall of the air inlet cavity 11 may include an outer cavity wall, an air outlet cavity wall 1116, a first side wall 1111, a second side wall 1112, and a third side wall 1113.

[0264] Optional, combined Figure 22cAs shown, the first static partition 183 includes a first straight plate segment 1831 and a first arc segment 1832. One longitudinal end of the first straight plate segment 1831 is fixedly connected to the second sidewall 1112, and its fixed position is located between the outdoor air vent 114 and the indoor return air vent 113. The other end extends towards the inner side of the air inlet cavity 11. One end of the first arc segment 1832 is fixedly connected to the extended end of the first straight plate segment 1831, and the other end is a free end. The first arc segment 1832 extends along the rotational outer circumference of the first outer plate end of the movable partition 181, and the first outer plate end of the movable partition 181 slidably abuts against the inner plate surface of the first arc segment 1832. Alternatively, the end of the first arc segment 1832 connected to the first straight plate segment 1831 can continue to extend along the rotational outer circumference direction to expand the rotational range of the first outer plate end.

[0265] Similarly, combination Figure 22c As shown, the second static baffle 184 includes a second straight section 1841 and a second arc section 1842. One longitudinal end of the first straight section 1841 is fixedly connected to the first sidewall 1111, and the other end extends towards the inside of the air inlet cavity 11. One end of the second arc section 1842 is fixedly connected to the extended end of the second straight section 1841, and the other end is a free end. The second arc section 1842 extends along the rotational outer circumference of the second outer plate end of the movable baffle 181, and the second outer plate end of the movable baffle 181 slidably abuts against the inner plate surface of the second arc section 1842. Alternatively, the end of the second arc section 1842 that connects to the second straight section 1841 can continue to extend along the rotational outer circumference direction to expand the rotation range of the second outer plate end.

[0266] Optionally, the arc lengths of the first arc segment 1832 and the second arc segment 1842 are approximately equal.

[0267] In this embodiment, the rotation range of the movable partition 181 is limited to the angle range corresponding to the shortest arc length of the first arc segment 1832 and the second arc segment 1842. This ensures that the first outer plate end of the movable partition 181 can always abut against the first arc segment 1832 and the second outer plate end can always abut against the second arc segment 1842 during the rotation process.

[0268] In some embodiments, the fresh air module further includes an air inlet group, which includes a first air inlet and a second air inlet.

[0269] The first air inlet is located on the wall of the corresponding first sub-air inlet cavity 115, and is used to introduce fresh outdoor air into the first sub-air inlet cavity 115. Optionally, the first air inlet is the outdoor air outlet 114 in the previous embodiment, which is located on the second side wall 1112 of the air inlet cavity 11. The second air inlet is located on the wall of the corresponding second sub-air inlet cavity 116, and is used to introduce stale indoor air into the second sub-air inlet cavity 116. Optionally, the second air inlet is the indoor return air outlet 113 in the previous embodiment, which is located on the second side wall 1112 of the air inlet cavity 11.

[0270] In some other embodiments, the fresh air module further includes an air outlet group, which includes a first air outlet and a second air outlet.

[0271] Optionally, the air outlet group is located in the fan cavity 12 of the fresh air module, with the first air outlet corresponding to the first sub-inlet cavity 115 and the second air outlet corresponding to the second sub-inlet cavity 116. When the fan cavity rotates downwards, at least a portion of the airflow in the first sub-inlet cavity 115 is deflected towards the first air outlet, and at least a portion of the airflow in the second sub-inlet cavity 116 is deflected towards the second air outlet. In this embodiment, the first air outlet is used to output fresh outdoor air from the first sub-inlet cavity 115 to the indoor side; the second air outlet is used to discharge stale indoor air from the second sub-inlet cavity 116 to the outdoor side, or to filter stale indoor air and output it from the second sub-inlet cavity 116 to the indoor side.

[0272] Optionally, the first air outlet is the first volute air outlet 124, and the second air outlet is the second volute air outlet 125.

[0273] Optionally, the extended coverage area of ​​the first arc segment 1832 and the second arc segment 1842 is defined such that when the movable partition 181 rotates to a first position, the first position is where the first outer plate end of the movable partition 181 is located at the distal end of the first arc segment 1832 or the second outer plate end of the movable partition 181 is located at the distal end of the second arc segment 1842, such as... Figure 22e As shown, at least a portion of the cavity space of the second sub-inlet cavity 116 corresponds to the upstream air path of the first volute outlet 124, and at least a portion of the cavity space of the first sub-inlet cavity 115 corresponds to the upstream air path of the second volute outlet 125, such that a portion of the fresh airflow from the first sub-inlet cavity 115 is diverted to the second volute outlet 125, and then discharged to the outdoor side through the second volute outlet 125. Figure 22e The fresh airflow corresponding to area C1 in the middle; and part of the polluted airflow in the second sub-inlet chamber 116 will be diverted to the first volute outlet 124, such as Figure 22e The polluted airflow corresponding to area C2 in the middle.

[0274] Therefore, compared to the fixed partition form in the previous embodiment, a portion of the indoor polluted air is replaced by a portion of the outdoor fresh air and output to the indoor side. This replaced portion of the outdoor fresh air is then discharged back to the outdoor side, thus reducing the amount of outdoor fresh air output to the indoor side when the movable partition 181 is in the first position.

[0275] Further optionally, the extended coverage area of ​​the first arc segment 1832 and the second arc segment 1842 is defined such that when the movable partition 181 rotates to the second position, the first position is where the first outer plate end of the movable partition 181 is located near the end of the first arc segment 1832 or the second outer plate end of the movable partition 181 is located near the end of the second arc segment 1842, such as... Figure 22f As shown, all or most of the cavity space of the first sub-inlet cavity 115 corresponds to the upper and middle reaches of the air path of the first volute outlet 124, and all or most of the cavity space of the second sub-inlet cavity 116 corresponds to the upper and middle reaches of the air path of the second volute outlet 125, so that all or most of the fresh air flow of the first sub-inlet cavity 115 will be diverted to the first volute outlet 124, and all or most of the stale air flow of the second sub-inlet cavity 116 will be diverted to the second volute outlet 125.

[0276] Optionally, the proximal end of the first arc segment 1832 corresponds to the first volute segment 1242, and / or the proximal end of the second arc segment 1842 corresponds to the second volute segment 1252.

[0277] Therefore, compared to the first position of the movable partition 181, the amount of outdoor fresh air output to the indoor side is significantly increased when the movable partition 181 is in the second position, and its diversion and air supply effect is close to that of the fixed partition in the previous embodiment.

[0278] In this way, those skilled in the art can move the movable baffle 181 between the first and second positions and select the actual separation air supply position according to actual needs, so as to dynamically adjust the air volume output ratio of outdoor fresh air and indoor stale air. Specifically, when the movable baffle 181 moves from the first position to the second position, the proportion of fresh air output through the first volute outlet 124 gradually increases, and the proportion of stale air output through the second volute outlet 125 gradually increases. Conversely, when the movable baffle 181 moves from the second position to the first position, the proportion of fresh air output through the first volute outlet 124 gradually decreases, and the proportion of stale air output through the second volute outlet 125 gradually decreases.

[0279] In the above embodiment, the air filter element 14 of the fresh air module 1 is arranged in a strip shape in the air inlet cavity 11, and it covers at least one of the first air inlet and the second air inlet, so as to filter and purify the airflow input from the first air inlet and / or the second air inlet.

[0280] exist Figure 22bIn this configuration, the air filter 14 is positioned near the second side wall 1112 of the air inlet cavity 11, so as to simultaneously cover the outdoor air inlet 114, which serves as the first air inlet, and the indoor return air inlet 113, which serves as the second air inlet.

[0281] In some alternative embodiments (not shown in the figures), the partition includes a movable partition and a partition driver, the partition driver being able to drive the movable partition to move laterally within the air inlet cavity.

[0282] Here, the movable partition is slidably disposed within the air inlet cavity, with its lateral movement plane parallel to the wall surface of the air outlet cavity. Optionally, one end of the movable partition is provided with a partition drive rack extending laterally. Correspondingly, the partition driver includes a partition drive motor and a partition drive gear. The partition drive gear and the partition drive rack mesh with each other, thereby enabling the partition drive motor to drive the movable partition to reciprocate along the longitudinal direction of the partition drive rack. Here, the longitudinal direction of the partition drive rack is parallel to the longitudinal direction of the first side wall and the second side wall.

[0283] In this embodiment, the partition drive motor is a bidirectional rotary motor type, capable of selectively moving the partition along either a first or second transverse direction. The first and second directions are opposite directions. Optionally, the first direction involves movement towards the side containing the third sidewall, and the second direction involves movement towards the side containing the fourth sidewall.

[0284] In this embodiment, similar to the partition plate shown in the previous embodiment, the movable partition plate is formed by enclosing at least a portion of the cavity wall of the air inlet cavity to form a first sub-air inlet cavity, and by enclosing at least another portion of the cavity wall of the air inlet cavity to form a second sub-air inlet cavity.

[0285] Alternatively, to ensure the airtightness between the two sub-inlet chambers during the lateral movement of the movable baffle, the inlet chamber can be constructed as a square cavity, or in other words, the interior of the inlet chamber is square, with the vertical length of the movable baffle matching the vertical length of the inlet chamber. This ensures that during the lateral sliding movement of the movable baffle, its longitudinal ends remain in contact with the opposite side walls of the inlet chamber, reducing potential air leakage gaps during the movement.

[0286] In this way, when the movable partition moves laterally within the air inlet cavity, it can alter the cavity space of the first and second sub-air inlets. For example, when the movable partition moves towards the third side wall, the cavity space of the first sub-air inlet and the diameter of its corresponding first sub-air outlet increase, while the cavity space of the second sub-air inlet and the diameter of its corresponding second sub-air outlet decrease. Alternatively, when the movable partition moves towards the fourth side wall, the cavity space of the first sub-air inlet and the diameter of its corresponding first sub-air outlet become smaller, while the cavity space of the second sub-air inlet and the diameter of its corresponding second sub-air outlet increase.

[0287] In conjunction with the previous embodiment, an outdoor air vent and an indoor return air vent are spaced apart on the second sidewall. The outdoor air vent is used to supply fresh outdoor air to the first sub-intake chamber, and the indoor return air vent is used to supply stale indoor air to the second sub-intake chamber. Optionally, the lateral movement range of the movable partition is limited so that its longitudinal end corresponding to the second sidewall is always located between the outdoor air vent and the indoor return air vent, so that the outdoor air vent always corresponds to the first sub-intake chamber, and the indoor return air vent always corresponds to the second sub-intake chamber.

[0288] In the above embodiments, the fresh air duct 20 is connected to the first air inlet to introduce fresh outdoor air into the first air inlet cavity 11; and the second air duct channel is connected to the second air outlet to exhaust indoor stale air to the outdoor side.

[0289] Optionally, the baffle plate form used to separate the air inlet channel 1223 of the impeller 122 shown in the previous embodiment can also be applied to the separation component in this embodiment, so that the separation component can not only dynamically adjust the space of the sub-air inlet cavity in the air inlet cavity 11 during the operation, but also dynamically adjust the channel space change of the air inlet channel 1223 in the fan cavity 12 accordingly, so as to enhance the diversion and air delivery effect of airflow from different sources.

[0290] In conjunction with the preceding embodiments, the first partition plate 191 of the separating component is disposed in the air inlet channel 1223 of the impeller 122, and the second partition plate 192 of the separating component is the movable partition plate 181 in this embodiment. The first partition plate 191 is fixed to the movable partition plate 181 and can move together with the movable partition plate 181, such as... Figure 22g As shown. Here, the first partition plate 191 is a design for a movable partition plate 181 that moves relative to the air inlet cavity 11 in a rotatable manner.

[0291] Optionally, the partition driver 182 can be driven to connect with the first partition 191 or the second partition 192 to drive the first partition 191 to rotate relative to the fan cavity and the second partition 192 to rotate relative to the air inlet cavity 11, so as to change the partition position of the first partition 191 relative to the air inlet channel 1223 and the partition position of the second partition 192 (moving partition 181) relative to the air inlet cavity 11.

[0292] In some alternative embodiments, at least a portion of the impeller driver 126 is located within the air inlet channel 1223 of the impeller 122. Correspondingly, the first partition plate 191 is formed with a clearance groove 1911 to avoid the impeller driver 126, thereby preventing positional interference between the first partition plate 191 and the impeller driver 126 during rotation. Figure 22h As shown.

[0293] Here, the clearance groove 1911 is spaced apart from the impeller driver 126, and the gap between the edge of the groove and the impeller driver 126 is minimized as much as possible while avoiding contact, so as to improve the airtightness and reduce the mixing of airflow between the two air intake areas in the air intake channel 1223 through the gap.

[0294] 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.)

[0295] 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.

[0296] 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.

[0297] 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.

[0298] 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.

[0299] 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.

[0300] 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.

[0301] 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.

[0302] 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.

[0303] 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.

[0304] 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.

[0305] 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.

[0306] 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.

[0307] Here, the heat exchange assembly includes an indoor heat exchange duct, an indoor heat exchanger 62, and an indoor 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 within 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.

[0308] 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.

[0309] 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, include: The module housing has an internal structure containing an air inlet chamber and a fan chamber for airflow; the fan chamber contains a rotatable impeller; the air inlet chamber contains a partition component for dividing the air inlet chamber into a first sub-air inlet chamber and a second sub-air inlet chamber. An air outlet assembly includes a first air outlet and a second air outlet; the first air outlet corresponds to a first sub-inlet chamber, and the second air outlet corresponds to a second sub-inlet chamber; when the fan chamber rotates downward, at least a portion of the airflow in the first sub-inlet chamber is deflected toward the first air outlet, and at least a portion of the airflow in the second sub-inlet chamber is deflected toward the second air outlet. The partition component is movably disposed within the air inlet cavity, and its relative position to the air inlet cavity can be controlled to change the cavity space of the first sub-air inlet cavity and the second sub-air inlet cavity.

2. The fresh air module according to claim 1, characterized in that, The partition component is pivotally connected to the air inlet cavity to rotatably adjust its relative position to the air inlet cavity.

3. The fresh air module according to claim 2, characterized in that, The partition components include: A movable partition is pivotally connected to the air inlet cavity. The movable partition and at least a portion of the cavity wall of the air inlet cavity form a first sub-air inlet cavity, and the movable partition and at least another portion of the cavity wall of the air inlet cavity form a second sub-air inlet cavity. A partition actuator, connected to a movable partition drive, is used to drive the movable partition to rotate axially within the air inlet cavity, thereby changing the cavity space of the first and second sub-air inlet cavities it encloses.

4. The fresh air module according to claim 3, characterized in that, The partition also includes: The first static baffle is fixed inside the air inlet cavity, and the dynamic baffle, the first static baffle, and at least a part of the cavity wall of the air inlet cavity together form the first sub-air inlet cavity; And / or, a second stationary baffle is fixed inside the air inlet cavity, and the moving baffle, the second stationary baffle, and at least another part of the cavity wall of the air inlet cavity together form a second sub-air inlet cavity.

5. The fresh air module according to claim 4, characterized in that, The movable partition has a first outer plate end and a second outer plate end located at both ends of its longitudinal direction; The first stationary partition includes a first arc segment that extends along the outer circumference of the first outer plate end of the movable partition, the first outer plate end of the movable partition slidably abutting against the inner plate surface of the first arc segment; and / or, the second stationary partition includes a second arc segment that extends along the outer circumference of the second outer plate end of the movable partition, the second outer plate end of the movable partition slidably abutting against the inner plate surface of the second arc segment.

6. The fresh air module according to claim 3, characterized in that, The movable partition can be a straight plate or a non-straight plate.

7. The fresh air module according to any one of claims 1 to 6, characterized in that, It also includes the air inlet assembly, which includes: The first air inlet is located on the cavity wall of the corresponding first sub-air inlet chamber, and is used to introduce fresh outdoor air into the first sub-air inlet chamber. The second air inlet is located on the cavity wall of the corresponding second sub-air inlet chamber, and is used to introduce indoor stale air into the second sub-air inlet chamber.

8. The fresh air module according to claim 7, characterized in that, The first air outlet is used to output fresh outdoor air from the first sub-air inlet to the indoor side; And / or, the second air outlet is used to discharge indoor polluted air from the second sub-air inlet to the outdoor side, or to filter indoor polluted air and output it from the second sub-air inlet to the indoor side.

9. The fresh air module according to claim 8, characterized in that, It also includes fresh air ducts, which have a first duct passage and a second duct passage; The first duct is connected at one end to the first air inlet and at the other end to the outside and connected to the outside, so as to introduce fresh outdoor air into the first sub-air inlet cavity; and the second duct is connected at one end to the second air outlet and at the other end to the outside and connected to the outside, so as to exhaust indoor stale air to the outside.

10. An air conditioner, characterized in that, include: Air conditioner unit; and, The fresh air module as described in any one of claims 1 to 9.

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