Air filter element, fresh air module and air conditioner

Abstract

The utility model relates to the technical field of fresh air exchange, and discloses an air filter element which comprises a first filter element part and a second filter element part which are arranged side by side in the longitudinal direction of the air filter element, and the first filter element part and the second filter element part are arranged in a staggered mode in the thickness direction of the air filter element, so that a space formed by the first filter element part and the second filter element part in a staggered mode serves as an air non-filtering flow path area. The air filter element provided by the embodiment of the utility model is different from a common flat plate type air filter element form of an existing fresh air module, and the two filter element parts are arranged in the thickness direction of the air filter element in a staggered manner, so that a space formed by the two filter element parts in a staggered manner can be used as an air non-filtering flow path area; the air non-filtering flow path area can serve as a flow path of indoor dirty air, and the indoor dirty air does not flow through the air filter element, so that the influence of indoor dirty air filtering on the service life of the air filter element can be effectively reduced. The utility model further discloses the fresh air module and the air conditioner.

Description

Technical Field

[0001] The present application relates to the technical field of fresh air ventilation, for example, to an air filter element, a fresh air module and an air conditioner. Background Art

[0002] As people pay more and more attention to air quality issues, users have higher and higher requirements for air quality in daily living rooms such as living rooms and bedrooms. There are many factors that lead to the decline of indoor air quality, such as formaldehyde, benzene, and ammonia air pollutants volatilized from indoor decoration materials, or the indoor air is not circulated due to the doors and windows being closed at night, which will accumulate a large amount of harmful gases such as carbon dioxide and formaldehyde. Such air quality problems will more or less affect the health of users in the room, such as inducing users to feel chest tightness, shortness of breath, dry mouth, and difficulty breathing.

[0003] In response to the above situation, the "fresh air air conditioner" product came into being. Fresh air air conditioners are based on traditional air conditioner models and add fresh air modules, air duct components and other components. The fan is used to draw fresh air from the outdoor side into the indoor environment to improve the indoor air quality. In the relevant product design, a fresh air module solution with dual functions of outdoor fresh air and indoor exhaust is also provided. The fresh air module can use the fan impeller to drive the outdoor fresh air and indoor polluted air to flow into the fresh air module respectively, and send the outdoor fresh air into the indoor environment, and exhaust the indoor polluted air to the outdoor environment, thereby greatly accelerating the ventilation efficiency of the indoor and outdoor.

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

[0005] In the above product solution, the fresh air module housing is equipped with an air filter, which can cover the outdoor fresh air flow path and the indoor polluted air flow path, so that the outdoor fresh air and indoor polluted air can be filtered through the air filter respectively. However, in actual product application, it is found that since the indoor polluted air is eventually discharged to the outdoor environment, it is not necessary to filter the indoor polluted air; since the indoor polluted air is mixed with a lot of pollutants, the air flow path design of the above fresh air module will accelerate the consumption of the service life of the air filter, resulting in an increase in the cost of consumables of the fresh air module.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide an air filter element, a fresh air module and an air conditioner to solve the technical problem that the air filter element used in the existing fresh air module needs to filter indoor polluted air, which affects the service life.

[0009] According to the first aspect of the present application, an air filter element is provided, comprising a first filter element portion and a second filter element portion arranged side by side along the longitudinal direction of the air filter element, and the first filter element portion and the second filter element portion are staggered along the thickness direction of the air filter element so that the space formed by the staggered arrangement of the two serves as an air non-filter flow path area.

[0010] In some optional embodiments, the air filter element further comprises a filter element frame, and the filter element frame comprises:

[0011] The first frame is structured with a receiving groove for receiving the first filter element;

[0012] The second frame is structured with a receiving groove for receiving the second filter element;

[0013] The first frame and the second frame are arranged side by side in the longitudinal direction, and the adjacent sides of the first frame and the second frame are fixedly connected in an interlaced manner.

[0014] In some optional embodiments, the first frame and the second frame are an integrally formed structure.

[0015] In some optional embodiments, the first filter element portion and the second filter element portion satisfy the following relationship:

[0016] T1 ≥ T2, and / or, F1 ≤ F2;

[0017] Wherein, T1 is the thickness of the first filter element, T2 is the thickness of the second filter element; F1 is the filtration rate of the first filter element, and F2 is the filtration rate of the second filter element.

[0018] According to a second aspect of the present application, there is also provided a fresh air module, comprising:

[0019] The module housing has an air inlet cavity and a fan cavity for air flow to flow through, and the fan cavity accommodates an impeller for driving air to flow through the module housing;

[0020] The air filter element as shown in any one of the embodiments of the first aspect is arranged in the air inlet cavity and is configured to filter the air flowing through the air inlet cavity; wherein the second filter element portion is located on a side away from the fan cavity;

[0021] An outdoor air outlet is provided on the wall of the air inlet cavity on the windward side of the air filter element;

[0022] The indoor return air port is opened on the cavity wall of the air inlet cavity on the leeward side of the air filter element and corresponds to the air non-filtering flow path area so that the indoor return air does not flow through the air filter element and enters the fan cavity.

[0023] In some optional embodiments, the windward surface of the air filter element is spaced apart from the cavity wall of the air inlet cavity.

[0024] In some optional embodiments, the air inlet chamber further has one or more shielding members, which are arranged on the peripheral side of the air non-filtering flow path area to close the air leakage gap between the air filter element and the air inlet chamber.

[0025] In some optional embodiments, the indoor return air outlet is opened on the bottom wall of the air inlet cavity;

[0026] The air inlet cavity is provided with a slideway assembly for defining a pulling track of the air filter element. The slideway assembly includes a first track and a second track. The first track is provided on the upper side of the air filter element, and the second track is provided on the lower side of the air filter element. The interval between the first track and the second track is configured as a pulling space for the air filter element.

[0027] Among them, the first track extends toward the air filter element to block the air leakage gap between the upper side of the air filter element and the air inlet chamber, and / or the second track is spaced apart from the air filter element to form an escape space for air to flow from the indoor return air outlet to the air non-filtering flow path area.

[0028] In some optional embodiments, the air non-filtering flow path region is configured such that the flow path area gradually expands from the indoor return air outlet.

[0029] According to a third aspect of the present application, there is also provided an air conditioner, comprising:

[0030] air conditioner body; and,

[0031] A fresh air module as shown in any embodiment of the aforementioned second aspect.

[0032] The air filter element, fresh air module and air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0033] The air filter provided in the disclosed embodiment is different from the flat-plate air filter commonly used in existing fresh air modules. Its two filter parts are staggered along the thickness direction of the air filter, so that the space formed by the staggered arrangement of the two can be used as an air non-filtering flow path area. In this way, after the air filter is assembled to the fresh air module, the air non-filtering flow path area can be used as a flow path for indoor polluted air, and the indoor polluted air does not flow through the air filter, thereby effectively reducing the influence of indoor polluted air filtration on the service life of the air filter.

[0034] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0036] Figure 1 is a schematic diagram of the overall structure of a fresh air module provided by an embodiment of the present disclosure;

[0037] Figure 1a is a schematic diagram of the disassembled structure of a fresh air module provided in one embodiment of the present disclosure;

[0038] Figure 2 is a schematic diagram of the overall structure of a module housing provided by an embodiment of the present disclosure;

[0039] Figure 2a is a schematic diagram of disassembling a module housing provided by an embodiment of the present disclosure at a first viewing angle;

[0040] Figure 2b is a schematic diagram of disassembling a module housing provided by an embodiment of the present disclosure at a second viewing angle;

[0041] Figure 3a is a schematic diagram of the cross-sectional structure of an air inlet cavity provided by an embodiment of the present disclosure;

[0042] Figure 3b is a schematic diagram of the disassembled structure of the air inlet chamber provided in one embodiment of the present disclosure;

[0043] Figure 3c is a schematic structural diagram of an air outlet cavity wall provided by an embodiment of the present disclosure;

[0044] Figure 3d is a schematic diagram of the assembly of a partition plate provided by an embodiment of the present disclosure;

[0045] Figure 3e is a structural schematic diagram of a partition plate provided by another embodiment of the present disclosure;

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

[0047] Figure 4a is a schematic diagram of the disassembled structure of an air filter element provided in one embodiment of the present disclosure;

[0048] Figure 4b is an external schematic diagram of an air inlet cavity provided by another embodiment of the present disclosure;

[0049] Figure 4c is a schematic diagram of the structure of a slot provided by an embodiment of the present disclosure;

[0050] Figure 4d is a schematic structural diagram of an air outlet cavity wall provided by another embodiment of the present disclosure;

[0051] Figure 4e is a structural schematic diagram of an air filter element provided in yet another embodiment of the present disclosure (viewing angle 1);

[0052] Figure 4f is a structural schematic diagram of an air filter element provided by another embodiment of the present disclosure (viewing angle 2);

[0053] Figure 4g is a top view of an air filter element provided by an embodiment of the present disclosure;

[0054] Figure 4h is a structural schematic diagram of a filter element frame provided by an embodiment of the present disclosure;

[0055] Figure 4i 1 is a schematic diagram of the assembly of an air filter element and a module housing provided in an embodiment of the present disclosure (viewing angle 1);

[0056] Figure 4j 1 is a schematic diagram of the assembly of an air filter element and a module housing provided by an embodiment of the present disclosure (viewing angle 2);

[0057] Figure 5 is a structural schematic diagram of a fan chamber provided by an embodiment of the present disclosure;

[0058] Figure 5a is a schematic diagram of the disassembled structure of a fan chamber provided in an embodiment of the present disclosure;

[0059] Figure 5b is a cross-sectional schematic diagram of a fan cavity provided by an embodiment of the present disclosure;

[0060] Figure 5c is a schematic structural diagram of a fan volute provided in an embodiment of the present disclosure;

[0061] Figure 5d is a structural schematic diagram of a first volute air outlet provided in an embodiment of the present disclosure;

[0062] Figure 5e is a schematic structural diagram of a second volute air outlet provided in an embodiment of the present disclosure;

[0063] Figure 6 is a schematic structural diagram of an impeller provided in one embodiment of the present disclosure;

[0064] Figure 7 is a schematic diagram of the airflow direction in the fan cavity provided by an embodiment of the present disclosure;

[0065] Figure 8 is a schematic diagram of an axial projection of a partition plate provided by an embodiment of the present disclosure relative to a volute of a fan;

[0066] Fig. 9 is a schematic diagram of an outdoor air outlet of a module housing provided in an embodiment of the present disclosure;

[0067] Fig.10 is a schematic diagram of an indoor return air outlet of a module housing provided by an embodiment of the present disclosure;

[0068] Fig.11 is a schematic diagram of a second side wall of the air inlet cavity provided by an embodiment of the present disclosure;

[0069] Fig.12 is a schematic structural diagram of a fresh air duct provided by an embodiment of the present disclosure;

[0070] Fig.12a is a structural schematic diagram of an air duct body provided by an embodiment of the present disclosure;

[0071] Figure 12b is a cross-sectional schematic diagram of an air duct body provided by an embodiment of the present disclosure;

[0072] Fig.12c is a cross-sectional schematic diagram of an air duct body provided by another embodiment of the present disclosure;

[0073] Fig.13 is a schematic structural diagram of a pipe joint provided by an embodiment of the present disclosure;

[0074] Fig.14 is a cross-sectional schematic diagram of a pipe joint provided in one embodiment of the present disclosure;

[0075] Fig.15 It is a schematic diagram of the assembly of a pipe joint, a module housing, and an air outlet switching part provided in an embodiment of the present disclosure;

[0076] Fig.16 is a structural schematic diagram of an integrated switch unit provided in an embodiment of the present disclosure;

[0077] Fig.16a is a schematic diagram of assembling an integrated switch unit and a module housing provided by an embodiment of the present disclosure;

[0078] Fig.17a is a schematic diagram of a windshield provided by an embodiment of the present disclosure being located at a first sliding position;

[0079] Fig.17b is a schematic diagram of a windshield provided by an embodiment of the present disclosure being located at a second sliding position;

[0080] Fig.17cis a schematic diagram of a windshield provided by an embodiment of the present disclosure being located at a third sliding position;

[0081] Fig.18 is a structural schematic diagram of an air outlet switching unit provided in an embodiment of the present disclosure;

[0082] Fig.18a is a schematic cross-sectional structure diagram of an air outlet switching unit provided in one embodiment of the present disclosure;

[0083] Fig.18b is a schematic diagram of the disassembled structure of an air outlet switching unit provided in an embodiment of the present disclosure;

[0084] Fig.19 is a structural schematic diagram of a wind blocking assembly provided by an embodiment of the present disclosure;

[0085] Fig.19a is a structural schematic diagram of a wind blocking block provided by an embodiment of the present disclosure;

[0086] Fig.19b It is a schematic diagram of the assembly of the wind blocking motor and the switching housing provided by an embodiment of the present disclosure;

[0087] Fig.20a is a schematic diagram of a wind blocking block provided by an embodiment of the present disclosure being located at a first rotation position;

[0088] Fig.20b is a schematic diagram of a wind blocking block provided by an embodiment of the present disclosure being located at a second rotation position;

[0089] Fig.21 is an external schematic diagram of a switching housing provided by an embodiment of the present disclosure;

[0090] Fig.22a is a schematic diagram of the airflow direction of the air inlet cavity in a fresh air mode provided by an embodiment of the present disclosure;

[0091] Figure 22b It is a schematic diagram of the airflow direction of the fan cavity and the air outlet switching part in the fresh air mode provided by an embodiment of the present disclosure;

[0092] Fig.22c This is a schematic diagram of the airflow direction of the fresh air duct in the fresh air mode provided by an embodiment of the present disclosure;

[0093] Fig.23a is a schematic diagram of the airflow direction of the air inlet cavity in a two-way air exchange mode provided by an embodiment of the present disclosure;

[0094] Figure 23b It is a schematic diagram of the airflow direction of the fan cavity and the air outlet switching part in a two-way air exchange mode provided by an embodiment of the present disclosure;

[0095] Fig.23cThis is a schematic diagram of the airflow direction of the fresh air duct in a two-way air exchange mode provided by an embodiment of the present disclosure;

[0096] Fig.24 is a schematic diagram of the external structure of an air conditioner provided by an embodiment of the present disclosure;

[0097] Fig.24a It is a schematic diagram of the internal structure of an air conditioner provided in one embodiment of the present disclosure.

[0098] Reference numerals:

[0099] 1. Fresh air module;

[0100] 10. Module housing; 11. Air inlet cavity; 1111. First side wall; 1112. Second side wall; 1113. Third side wall; 1114. Fourth side wall; 1115. External cavity wall; 1116. Air outlet cavity wall; 112. Air inlet cavity 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 portion; 1212. Second volute portion; 122. Impeller; 1221. Hub; 1222. Blade; 1223. Air inlet channel; 123. Volute air inlet; 124. First volute outlet outlet; 1241, first extension section; 1242, first volute tongue section; 125, second volute air outlet; 1251, second extension section; 1252, second volute tongue section; 126, impeller driver; 13, first air outlet duct; 14, air filter element; 141, filter element partition strip; 142, first filter element section; 143, second filter element section; 144, filter element frame; 1441, first frame; 1442, second frame; 15, partition plate; 151, first arc plate section; 152, second arc plate section; 153, middle arc plate section; 154, first partition plate; 155, second partition plate; 16, partition rib; 171, first track; 172, second track; 18, sealing plate;

[0101] 20. Fresh air duct; 21. Air duct body; 211. First air duct body channel; 212. Second air duct body channel; 213. Air duct partition; 22. Pipe joint; 221. First joint channel; 222. Second joint channel; 223. Joint partition; 231. First air duct channel; 2311. First fresh air outlet; 232. Second air duct channel; 2321. Second fresh air outlet; 2322. Branch pipe port;

[0102] 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 blocking block; 321. central rotating shaft; 322. air blocking baffle; 3221. arc-shaped plate; 3222. supporting plate; 33. air blocking motor; 331. fixing ear plate;

[0103] 40. Integrated switch unit; 41. Wind shield; 42. Baffle rack; 43. Integrated drive motor; 44. Integrated gear;

[0104] 51. First indoor air outlet; 52. Second indoor air outlet;

[0105] 6. Air conditioner; 61. Indoor unit casing; 611. First casing air outlet; 612. Second casing air outlet; 613. Casing return air outlet; 62. Indoor heat exchanger. DETAILED DESCRIPTION

[0106] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0107] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0108] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0109] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0110] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0111] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0112] The present application provides a fresh air module 1, which can be applied to air conditioning equipment such as air conditioners (such as wall-mounted air conditioners), fresh air fans, humidifiers, etc., so as to controllably realize the functions of separately introducing outdoor fresh air, separately exhausting indoor polluted air, and / or simultaneously introducing outdoor fresh air and exhausting indoor polluted air, thereby improving indoor air quality and enhancing environmental comfort.

[0113] like Figure 1 and 1a As shown, the fresh air module 1 mainly includes components such as a module housing 10, a fresh air duct 20 and an air outlet switching unit 30. The module housing 10 is internally constructed with an air cavity that limits the airflow path, and can be used as a space for accommodating components such as an air filter element 14 and a fan impeller 122. Here, the module housing 10 is provided with an indoor air outlet for communicating with the indoor side, and an outdoor air outlet 114 for communicating 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 is used as an air outlet for the fresh air module 1 to supply air to the indoor side, and the indoor return air outlet 113 is used as an air outlet for air to flow back from the indoor side to the fresh air module 1; the outdoor air outlet 114 is used as an air outlet for the fresh air module 1 to exhaust air to the outdoor side or for the outdoor side to transport fresh air to the fresh air module 1. The fresh air duct 20 extends from the indoor side to the outdoor side, and serves as a through-wall passage for introducing outdoor fresh air and / or exhausting indoor polluted air. The fresh air duct 20 is connected to the air cavity of the module housing 10, thereby jointly defining an outdoor fresh air introduction path and / or an indoor polluted air exhaust path. The air outlet switching unit 30 is provided on the air outlet side of the module housing 10, and is used to define the air outlet direction of at least part of the airflow flowing through the module housing 10, and the at least part of the airflow includes outdoor fresh air or indoor polluted air, and the air outlet direction includes flowing to the indoor side or the outdoor side, thereby realizing the functions of introducing outdoor fresh air and / or exhausting outdoor polluted air.

[0114] In some optional embodiments, combined with Figure 2 , 2a As shown in FIG. 2b, the air cavity of the module housing 10 includes an air inlet cavity 11 and a fan cavity 12, and the air inlet cavity 11 is connected to the fan cavity 12, 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 components such as a partition component and an air filter element 14, and the air inlet cavity 11 is connected to one or more of an indoor air outlet and an outdoor air outlet 114. The fan cavity 12 can be used to accommodate components such as an impeller 122, and the fan cavity 12 is connected to one or more of an indoor air outlet and an outdoor air outlet 114.

[0115] Optionally, the air inlet cavity 11 is located upstream of the wind path relative to the fan cavity 12, that is, the fan cavity 12 is located on the wind outlet side of the air inlet cavity 11, so that the flow direction of air from the air inlet cavity 11 to the fan cavity 12 is defined in the module housing 10. Alternatively, the air inlet cavity 11 is located downstream of the wind path relative to the fan cavity 12, that is, the air inlet cavity 11 is located on the wind outlet side of the fan cavity 12, so that the flow direction of air from the fan cavity 12 to the air inlet cavity 11 is defined in the module housing 10. Hereinafter, the former "the air inlet cavity 11 is located upstream of the wind path of the fan cavity 12" structure is mainly used as an example for explanation.

[0116] In some embodiments, in combination Figures 3a to 3e As shown, the air inlet chamber 11 includes a first sub-air inlet chamber 115 and a second sub-air inlet chamber 116, and the two are separated and arranged, and the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 respectively form a relatively independent air path, and the air flowing into the air inlet chamber 11 is divided into the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116, and is continuously transported to the fan chamber 12 along the respective air paths. Optionally, a partition component is provided in the air inlet chamber 11, and the partition component is used to separate the air inlet chamber 11 into the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116.

[0117] Optionally, the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 can circulate air from the same wind source, for example, the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 are used to convey outdoor fresh air from the outdoor side at the same time, or are used to convey indoor polluted air from the indoor side at the same time. Alternatively, the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 can circulate air from different wind sources, for example, one of the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 is used to convey outdoor fresh air from the outdoor side, and the other is used to convey indoor polluted 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 chambers convey air from different wind sources, so as to block or slow down the mixing of air in different clean states.

[0118] Optionally, the overall outer contour of the air inlet cavity 11 is 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 FIG. Figure 3a and 3b . Among them, the wall surfaces of the outer cavity wall 1115 and the air outlet cavity wall 1116 are parallel and spaced apart from each other, 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 peripheral 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 are jointly arranged to form the aforementioned air inlet cavity 11. Here, the two lateral sides (long sides) of each of the first side wall 1111, the second side wall 1112, the third side wall 1113 and the fourth side wall 1114 are respectively connected to the corresponding side sides of the outer cavity wall 1115 and the air outlet cavity wall 1116, and the two longitudinal sides (short sides) are respectively connected to the short sides of other adjacent side walls.

[0119] In an embodiment, in combination Figure 3c As shown, an air inlet cavity outlet 112 is provided on the air outlet cavity wall 1116, and the air inlet cavity 11 is connected to the fan cavity 12 through the air inlet cavity outlet 112. In this embodiment, the opening position and coverage range of the air inlet cavity outlet 112 should at least cover the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116, so that the air flowing through the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 can flow to the fan cavity 12 through the air inlet cavity outlet 112.

[0120] In some optional embodiments, combined with Figure 3a and 3b As shown, the partition component includes a partition plate 15, which is arranged inside the air inlet cavity 11 and extends from one side wall of the air inlet cavity 11 to another opposite side wall. 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 partitions arranged front and back in space, namely the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 mentioned above.

[0121] Exemplary, combined Figure 3c and 3dAs shown, the first sub-air inlet chamber 115 is located in the front space area of ​​the air inlet chamber 11, and is formed by the third side wall 1113, the front side of the partition plate 15, and the outer cavity wall 1115, the air outlet cavity wall 1116, the first side wall 1111 and the second side wall 1112, each of which is close to the front side; the second sub-air inlet chamber 116 is located in the rear space area of ​​the air inlet chamber 11, and is formed by the fourth side wall 1114, the back side of the partition plate 15, and the outer cavity wall 1115, the air outlet cavity wall 1116, the first side wall 1111 and the second side wall 1112, each of which is close to the rear side.

[0122] 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 sub-air outlet and a second sub-air outlet. The first sub-air inlet cavity 115 is connected to the first sub-air outlet, and the second sub-air inlet cavity 116 is connected to the second sub-air outlet.

[0123] Optionally, from the perspective of the longitudinal cross-section of the partition plate 15, the plate body line shape of the partition plate 15 is constructed as a straight line, a curve, a broken line, etc., or a plate body form composed of one or more straight lines, and / or, one or more curves. Here, the plate body line shape of the partition plate 15 can be adjusted according to factors such as the cavity volume distribution and wind resistance in the air inlet chamber 11. For example, in the case where the cavity volume of the first sub-air inlet chamber 115 is required to be greater than the cavity volume of the second sub-air inlet chamber 116, the partition plate 15 can be constructed as a curve or broken line with the plate surface protruding toward the second sub-air inlet chamber 116 to increase the space actually allocated to the first sub-air inlet chamber 115. Alternatively, in the case where the cavity volumes of the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 are required to be approximately equal, the partition plate 15 can be constructed as a straight line and set at the midline position of the air inlet chamber 11 to achieve equal distribution of the space of the two sub-air inlet chambers 11.

[0124] In some further optional embodiments, the fresh air module 1 further includes an air filter element 14, which can be used to filter and purify the air flowing through the fresh air module 1 to reduce the content of air pollutants such as dust and PM2.5 in the air.

[0125] Optionally, the air filter element 14 is disposed in one of the air inlet chamber 11 and the fan chamber 12. Figure 4 , 4aAs shown in FIG4b, the air filter 14 is disposed in the air inlet chamber 11, and can absorb and intercept air pollutants when the air flows through the air inlet chamber 11. This can not only effectively improve the air quality, but also reduce the wear of the fan impeller 122 caused by large particles such as gravel entering the fan chamber 12. In this embodiment, the air filter 14 is arranged close to the air outlet chamber wall 1116 of the air inlet chamber 11 to better fit and cover the air outlet 112 of the air inlet chamber, so that most of the air flowing to the air outlet 112 of the air inlet chamber can pass through the air filter 14 for purification and filtration.

[0126] The air filter 14 itself has an adsorption saturation limit. After the fresh air module 1 has been used for a long time, the air filter 14 gradually reaches its upper limit of adsorption capacity. At this time, the air filter 14 needs to be cleaned and replaced in time. In this way, in this embodiment, the air filter 14 is detachably arranged in the fresh air module 1, so that the user can disassemble and assemble the air filter 14 by himself when necessary. Optionally, the air filter 14 is retractably arranged in the air inlet chamber 11, and the user can pull out the dirty air filter 14 from the fresh air chamber, or push the brand new air filter 14 into the fresh air chamber.

[0127] Optionally, a socket 117 is provided on the outer wall of the air inlet chamber 11, and the air filter element 14 can be moved into / out of the air inlet chamber 11 via the socket 117. Here, in combination with the above-mentioned embodiment, the outer wall on which the socket 117 can be provided is 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 chamber 11. Figure 4b As shown, the third side wall 1113 of the air inlet chamber 11 is provided with the socket 117, and the third side wall 1113 is the side wall of the air inlet chamber 11 close to the front side and facing the user, so the position of the socket 117 allows the user to perform the pulling operation more conveniently. In this embodiment, the shape and size of the socket 117 are adapted to the cross-sectional shape and size of the air filter element 14.

[0128] In the above embodiment, the plate body of the partition plate 15 extends horizontally from the outer cavity wall 1115 to the air outlet cavity wall 1116, so the air filter element 14 inserted into the air inlet cavity 11 is also on the horizontal covering path of the plate body. In order to avoid the structural interference between the partition plate 15 and the air filter element 14, the partition plate 15 is provided with a slot 118 for the air filter element 14 to be pulled out. The slot 118 can be used to make the partition plate 15 avoid the air filter element 14, so that the two can be arranged in the air inlet cavity 11 without interfering with each other. Figure 4c shown.

[0129] 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 lateral length of the air filter element 14. This ensures that the slot 118 does not block the movement of air in / out.

[0130] In some optional embodiments, the slot 118 is formed by being recessed along the axial direction of the air inlet cavity 11 from a side surface of the partition plate 15 corresponding to the air outlet cavity wall 1116, such as Figure 4c In the embodiment, the slot 118 is adapted to the cross-sectional shape of the air filter element 14 to reduce the air leakage gap formed between the edge of the slot 118 and the air filter element 14. Exemplarily, the cross-sectional shape of the air filter element 14 is rectangular, and accordingly, the slot 118 is also configured as a rectangular groove.

[0131] Optionally, the groove 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 groove 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 be prevented from being too large to affect the structural strength of the partition plate 15 itself. At the same time, since the air inside the air filter element 14 circulates freely and has no spatial separation effect, limiting the groove depth of the slot 118 can also reduce the adverse effect of the air filter element 14 on the spatial separation effect of the air inlet chamber 11. Exemplarily, the groove depth of the slot 118 is l, and the axial length of the partition plate 15 is L, then the size design requirement of l≤L / 2 needs to be met.

[0132] In some embodiments, the air outlet cavity wall 1116 of the air inlet cavity 11 is provided with a partition rib 16, which is formed by protruding from the wall surface of the air outlet cavity wall 1116 toward the side of the outer cavity wall 1115, and can be cooperated with the partition plate 15 to form a slot 118. Figure 4d shown.

[0133] Combination Figure 4c and 4d The slot 118 provided on the partition plate 15 corresponds to one lateral side and two 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 closeness of the air filter element 14 and one side of the air outlet cavity wall 1116, reduce the air leakage gap, and further enhance the spatial separation effect of the air inlet cavity 11 body.

[0134] In the embodiment, the separation rib 16 is consistent with the linear shape of the separation plate 15, and the positions in the axial direction overlap. In this way, the air flow path of the "separation plate 15-separation rib 16" part will not form an additional protrusion, and the flow path is smooth and smooth, avoiding the impact of wind resistance on the air. Exemplarily, the extension line shape of the separation plate 15 is a straight line, and the separation rib 16 is also adaptively constructed as a straight convex rib form; or, the extension line shape of the separation plate 15 is an arc line, and the separation rib 16 is adaptively constructed as an arc line convex rib form.

[0135] In some other optional embodiments, the slot 118 is a channel structure hollowed out along the thickness direction of the partition plate 15. Here, the slot 118 is opened in the middle of the partition plate 15 or near the side of the air outlet cavity wall 1116, and is formed through the thickness direction of the partition plate 15.

[0136] In this embodiment, the slot 118 includes a first slot edge, a second slot edge, a third slot edge and a fourth slot edge. Among them, the first slot edge is located at a side position close to the first side wall 1111, the second slot edge is located at a side position close to the second side wall 1112, the third slot edge is located at a side position close to the outer cavity wall 1115, and the fourth slot edge is located at a side position close to the air outlet cavity wall 1116. The four slot edges are jointly arranged to form the slot 118 for inserting the air filter element 14. Compared with the form in which the partition plate 15 and the partition rib 16 are jointly arranged to form the slot 118 in the previous embodiment, the present embodiment does not need to set the partition rib 16 on the air outlet cavity wall 1116, which simplifies the structure of the air inlet cavity 11.

[0137] In some embodiments, an elastic seal is provided on the inner periphery of the slot 118, and the elastic seal can be used to block the assembly gap between the slot 118 and the air filter element 14 to reduce the amount of air leakage in the assembly gap. Optionally, the elastic seal is provided on at least one side of the inner periphery of the slot 118. For example, for Figure 4c In the illustrated slot 118 form, the elastic seal may be disposed 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 .

[0138] Optionally, the elastic sealing member may be a rubber strip, a wool strip, etc. Furthermore, the elastic sealing member may be fixedly connected to the inner periphery of the slot 118 by gluing, clamping, etc.

[0139] In some other optional embodiments, in order to make the air filter 14 move in / out of the air inlet chamber 11 more smoothly, the present application uses a slide assembly in the air inlet chamber 11 to limit the pulling trajectory of the air filter 14. The slide assembly can be used to limit the movement path of the air filter 14 relative to the air inlet chamber 11.

[0140] Optionally, the slide assembly includes a first track 171 and a second track 172, and the interval between the first track 171 and the second track 172 is configured as a pull-out space for the air filter element 14. Figure 3c and 4d As shown, the first track 171 is provided on the air outlet cavity wall 1116 and is extended and formed along the pulling direction. The first track 171 is located on the upper side of the air inlet cavity outlet 112, and is used to limit the position above the air filter element 14. The second track 172 is provided on the air outlet cavity wall 1116 and is extended and formed parallel to the first track 171. The second track 172 is located on the lower side of the air inlet cavity outlet 112, and is used to limit the position below the air filter element 14. The first track 171 and the second track 172 are arranged in parallel, and through the cooperation of the first track 171 and the second track 172, the air filter element 14 can be pulled and moved along the straight track defined by the two tracks.

[0141] Exemplary, combined Figure 4d As shown, the first track 171 is a first guide strip protruding from the air outlet cavity wall 1116 toward the outer cavity wall 1115, and the first guide strip extends longitudinally from the third side wall 1113 to the fourth side wall 1114, that is, extends 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 cavity wall 1116 toward the outer cavity wall 1115, and the second guide strip is also extended longitudinally from the third side wall 1113 to the fourth side wall 1114. After the air filter element 14 is inserted into the air inlet cavity 11 from the socket 117 of the third side wall 1113, the top surface of the air filter element 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 can reduce the occurrence of the problem of movement and dislocation of the air filter element 14.

[0142] In the above embodiments, the types of the air filter element 14 include, but are not limited to, a primary filter element, a high-efficiency filter element, an activated carbon filter element, etc. Those skilled in the art can select a suitable filter element type according to actual purification requirements, and this application does not limit this.

[0143] In some other optional embodiments, in order to further enhance the spatial separation effect of the air inlet chamber 11, a filter element separation bar 141 is provided inside the air filter element 14, and the filter element separation bar 141 separates the filter element into two filter element parts corresponding to two air inlet partitions (sub-air inlet chambers 11). Here, the filter element separation bar 141 can play a role in blocking the air from flowing between the two filter element parts, such as Figure 4a shown.

[0144] Here, the overall outer contour of the filter element partition strip 141 is in the form of a flat strip, which extends horizontally from the side of the air filter element 14 close to the partition plate 15 to the side close to the partition rib 16, and vertically extends from the top surface of the air filter element 14 to the bottom surface.

[0145] Combination Figure 4a As shown, the filter element partition bar 141 divides the air filter element 14 into a first filter element part 142 and a second filter element part 143. The first filter element part 142 is located on the side corresponding to the first sub-air inlet chamber 115, and can be used to filter and purify the air flowing through the first sub-air inlet chamber 115; the second filter element part 143 is located on the side corresponding to the second sub-air inlet chamber 116, and can be used to filter and purify the air flowing through the second sub-air inlet chamber 116. Due to the separation effect of the filter element partition bar 141, the air flowing through the first filter element part 142 will not flow to the second filter element part 143, and similarly, the air flowing through the second filter element part 143 will not flow to the first filter element part 142, thereby preventing the air of the two sub-air inlet chambers 11 from mixing in the air filter element 14.

[0146] Optionally, the filter element partition strip 141 is consistent with the linear shape of the partition plate 15, and the positions in the axial direction overlap. In this way, the air flow path jointly formed by the "partition plate 15-filter element partition strip 141-partition rib 16" will not form additional protrusions, the flow path is smooth and smooth, and the air flow resistance is effectively reduced. Exemplarily, if the extension line shape of the partition plate 15 is a straight line, the filter element partition strip 141 is also constructed as a straight strip; or, if the extension line shape of the partition plate 15 is an arc line, the filter element partition strip 141 is also constructed as an arc line strip. Here, the thickness of the partition plate 15, the filter element partition strip 141 and the partition rib 16 are basically the same to ensure the smoothness of the plane of the air flow path.

[0147] In some other optional embodiments, combined with Figure 4e and Figure 4f As shown, the first filter element part 142 and the second filter element part 143 of the air filter element 14 are arranged side by side along its longitudinal direction, and the two filter element parts are staggered along the thickness direction of the air filter element 14, so that the space formed by the staggered two parts can be used as the non-filtering air flow path area.

[0148] Compared with the air filter element 14 style shown in the previous embodiment, the space formed by the two filter element parts is used as the air non-filtering flow path area. In this way, after the air filter element 14 is assembled to the fresh air module, the air non-filtering flow path area can be used as the flow path of the indoor polluted air, and the indoor polluted air does not flow through the air filter element 14. Figure 4i and Figure 4j As shown, the influence of indoor dirty air filtration on the service life of the air filter element 14 can be effectively reduced.

[0149] In this embodiment, the air filter 14 also has a filter frame 144, which is used to construct a accommodating space for accommodating one or more filter parts of the air filter 14, and can play a role in supporting and protecting the filter parts, so as to reduce the extrusion deformation problem of the air filter 14 caused by other components of the fresh air module 1 and maintain the flatness of the air filter 14.

[0150] Specifically, if Figure 4h As shown, the filter element frame 144 at least includes a first frame 1441 and a second frame 1442. The first frame 1441 is configured with a receiving groove for accommodating the first filter element 142, and the first filter element 142 is placed in the first frame 1441; and the second frame 1442 is configured with a receiving groove for accommodating the second filter element 143, and the second filter element 143 is placed in the second frame 1442. Here, in order to realize the staggered arrangement of the two filter elements mentioned above, the first frame 1441 and the second frame 1442 are arranged side by side along the longitudinal direction of the filter element frame 144, and the two alternately adjacent sides are staggered and fixedly connected to each other, so that the first frame 1441 and the second frame 1442 can stagger to form the aforementioned air non-filtering flow path area. Here, the adjacent sides of the first filter element 142 and the second filter element 143 are the filter element partition strips 141 in the previous embodiment.

[0151] Optionally, the first frame body 1441 and the second frame body 1442 of the filter element frame 144 are an integrally formed structure, thereby ensuring a high connection strength between the two frames.

[0152] In some optional embodiments, since the module housing 10 of the fresh air module has thickness specification requirements, in order to avoid the air filter element 14 with the above-mentioned staggered filter element configuration being unable to be placed in the socket of the air inlet chamber 11, the first filter element portion 142 and the second filter element portion 143 need to satisfy the following relationship, such as Figure 4g As shown:

[0153] T1 ≥ T2;

[0154] Wherein, T1 is the thickness of the first filter element portion 142 , and T2 is the thickness of the second filter element portion 143 .

[0155] For example, if the overall thickness of a certain air filter element 14 is 20 mm, the thickness T1 of the first filter element portion 142 is 15 mm, and the thickness T2 of the second filter element portion 143 is 5 mm. Thus, in this embodiment, by reducing the thickness of the second filter element portion 143, the overall thickness of the air filter element 14 is reduced, thereby ensuring that the air filter element 14 as a whole can meet the assembly size requirements.

[0156] In some other optional embodiments, in order to ensure the filtering effect of the second filter element 143, the first filter element 142 and the second filter element 143 need to satisfy the following relationship:

[0157] F1≤F2;

[0158] Among them, F1 is the filtration rate of the first filter element 142, and F2 is the filtration rate of the second filter element 143. Here, the filtration rate is used to characterize the ability of the filter element to filter tiny particles and impurities. The larger the filtration rate value, the higher its filtering ability.

[0159] For example, the filtration rate F1 of the first filter element 142 of a certain air filter element 14 is 80%, and the filtration rate F2 of the second filter element 143 is 90%. In this way, by using the second filter element 143 with a stronger filtering effect, the present embodiment can make up for the loss of filtering capacity caused by the small thickness of the second filter element 143, thereby ensuring that the air can still be better filtered when flowing through the second filter element 143.

[0160] In the aforementioned embodiment, taking the fresh air module 1 as a reference object, the second filter element portion 143 corresponds to one side of the second sub-air inlet chamber 116, and is located on the side of the second sub-air inlet chamber 116 away from the fan chamber 12. Therefore, the non-filtered air flow area is substantially formed by the side of the second filter element portion 143 corresponding to the fan chamber 12, the side wall of the module housing 10, and the partition plate 15.

[0161] Correspondingly, the outdoor air vent 114 for outdoor fresh air to enter is provided on the cavity wall of the air inlet cavity 11 located on the windward side of the air filter 14, so that the outdoor fresh air can simultaneously flow through the first filter element part 142 and the second filter element part 143 of the air filter 14. Also, the indoor return air vent 113 for indoor polluted air to flow in is provided on the cavity wall of the air inlet cavity 11 located on the leeward side of the air filter 14, and corresponds to the air non-filtering flow path area, so that the indoor return air can directly enter the air inlet cavity 11 without flowing through the air filter 14, and then flow to the fan cavity 12, and the indoor polluted air can be discharged to the outdoor environment without being filtered.

[0162] In the embodiment, in order to ensure that outdoor fresh air can flow into the first filter element part 142 and the second filter element part 143 of the air filter element 14, the windward surface of the air filter element 14 is spaced apart from the cavity wall of the air inlet cavity 11, so that the interval space between the windward surface of the air filter element 14 and the cavity wall of the air inlet cavity 11 is used as the path for air to flow from the outdoor air outlet to the air filter element 14. In this embodiment, the cavity wall of the air inlet cavity 11 corresponding to the windward surface of the air filter element 14 is the outer cavity wall 1115 of the aforementioned module housing 10.

[0163] Optionally, the distance between the windward surface of the air filter element 14 and the wall of the air inlet chamber 11 is 5 mm to 30 mm.

[0164] In some optional embodiments, the air inlet chamber 11 further has one or more shielding members, which are arranged on the peripheral side of the air non-filtering flow path area to close the air leakage gap between the air filter element 14 and the air inlet chamber 11.

[0165] Optionally, the shielding member includes a sealing plate 18 extending from the inner cavity wall (first side wall 1111) of the module housing 10 to the upper surface of the filter element frame 144 of the air filter element 14, and the sealing plate 18 can be used to close the communication area between the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 at the upper part of the air filter element 14, such as Figure 4i As shown, the indoor return air flowing into the non-filtered air flow path area is prevented from flowing from this position to the first sub-air inlet chamber 115. Here, the position of one end of the corresponding filter element frame 144 of the sealing plate corresponds to the top position of the filter element partition bar 141. In this way, since the filter element partition bar 141 of the air filter element 14 is also a solid plate strip structure, air cannot pass through. Therefore, the sealing plate and the filter element partition bar 141 can jointly realize the separation and sealing of the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116.

[0166] Alternatively, the shielding member also includes a sealing plate 18 extending from the outer cavity wall 1115 of the module housing 10 to the windward surface of the filter element frame 144 of the air filter element 14. The sealing plate 18 can be used to close the gap between the first frame 1442 where the second filter element portion 143 is located and the outer cavity wall 1115, thereby preventing indoor return air flowing into the non-filtered air flow area from flowing from this position to the first sub-air inlet cavity 115.

[0167] In the present embodiment, a slide assembly is also used to implement the pulling, disassembling and assembling operations of the air filter 14. Accordingly, the first track of the pulling assembly extends toward the air filter 14, that is, the first track 171 is extended from the air outlet cavity wall 1116 of the module housing toward the outer cavity wall. The track plate surface of the first track 171 can block the air leakage gap between the upper side of the air filter 14 and the air inlet cavity, thereby further improving the sealing effect of the non-filtering air flow area.

[0168] Alternatively, the second track 172 of the slide assembly located at the lower part of the space is spaced apart from the air filter element 14 to form an escape space for air to flow from the indoor return air outlet 113 to the air non-filtering flow area, thereby preventing the second track 172 from affecting the return air area and return air volume of the indoor return air, while also ensuring the normal sliding and pulling operation of the slide assembly and the air filter element 14.

[0169] In some optional embodiments, the non-filtered air flow path region is constructed so that the flow path area gradually expands from the indoor return air port 113, which can reduce the air intake resistance of the indoor return air and improve the exhaust efficiency of the indoor polluted air.

[0170] Specifically, the filter element partition bar 141 of the air filter element 14 is configured to extend obliquely from one end close to the indoor return air outlet 113 toward the first sub-air inlet chamber 115. In this way, the distance between the end of the filter element partition bar 141 away from the indoor return air outlet 113 and the cavity wall of the module housing 10 is greater than the distance between the end close to the indoor return air outlet 113 and the cavity wall of the module housing 10, and the air non-filtering flow path area presents a shape of gradually expanding from the indoor return air outlet 113. Optionally, the filter element partition bar 141 is obliquely extended along a straight line, an arc or other irregular line shape.

[0171] In some other optional embodiments, combined with Figures 5 to 5e As shown, the fan chamber 12 includes a fan volute 121 and an impeller 122. The impeller 122 is rotatably disposed inside the fan volute 121, and is used to rotate to generate a driving wind force to drive air to flow through the module housing 10. In this embodiment, the impeller 122 can at least drive air to flow from the air inlet chamber 11 to the fan chamber 12.

[0172] In an embodiment, the fan volute 121 is constructed as a detachable split structure, such as Figure 5c As shown, it includes a first volute portion 1211 and a second volute portion 1212. The detachable design can facilitate the installation / removal of the impeller 122 into / out of the fan volute 121, and is convenient for the assembly, replacement and maintenance of the fan volute 121. Here, the first volute portion 1211 is located on the side close to the air inlet chamber 11, and the second volute portion 1212 is located on the side of the air inlet chamber 11, and the two are assembled together to form the fan volute 121. Optionally, the first volute portion 1211 and the second volute portion 1212 can be fixed by means of snap connection, screw connection, riveting, etc., which has the advantages of firm connection and quick disassembly and assembly.

[0173] The fan volute 121 has a volute air inlet 123, which is used to communicate with the air inlet cavity outlet 112 of the air inlet cavity 11, so that air enters the fan volute 121 through the air inlet cavity outlet 112 and the volute air inlet 123 in sequence. In this embodiment, the volute air inlet 123 is provided on the first volute portion 1211, and the shape and size of the volute air inlet 123 are adapted to the air inlet cavity outlet 112. Exemplarily, the shape of the outlet of the air inlet cavity 11 is a circular air outlet, and accordingly, the volute air inlet 123 is also constructed in the form of a circular air outlet.

[0174] Optionally, the first volute portion 1211 and the air outlet cavity wall 1116 are an integrated structure, that is, the first volute portion 1211 and the air outlet cavity wall 1116 are two side surfaces of the same housing, the first volute portion 1211 is a side corresponding to the impeller 122, and the air outlet cavity wall 1116 is a side corresponding to the air filter element 14. In addition, the air inlet cavity outlet 112 of the air outlet cavity wall 1116 and the volute air inlet 123 of the first volute portion 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 can be simplified.

[0175] 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 constructed as an annular structure, and its internal space is used as an air inlet channel 1223 of the impeller 122, and the air inlet channel 1223 is formed by extending along the axial direction of the impeller 122. There are two hubs 1221, which are coaxially spaced, 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 constructed as a strip-shaped sheet structure, a first end of which is fixed to one of the hubs 1221, and the other end is fixedly connected to the other hub 1221. From the axial projection direction of the hub 1221, each blade 1222 is arranged at equal intervals along the outer circumference of the hub 1221, and is inclined relative to the outer circumference of the hub 1221, so that after the air enters the air inlet channel axially from the impeller 122, it is driven by the blades 1222 to diffuse radially outward and enter the shell space of the fan volute 121.

[0176] In the embodiment, the plurality of blades 1222 are evenly arranged along the outer circumference and together form an air inlet channel 1223 .

[0177] Optionally, the impeller 122 has a first rotation direction or a second rotation direction, and the first rotation direction is 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 that the airflow flows in a clockwise direction, and the second rotation direction is that the airflow flows in a counterclockwise direction.

[0178] In some of the optional embodiments described above, the fresh air module further includes an impeller driver 126 , which is drivingly connected to the impeller 122 and is used to drive the impeller 122 to rotate in the fan chamber 12 .

[0179] 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 supply air to different directions, respectively, to achieve a multi-angle and wide range air supply effect.

[0180] Optionally, the first indoor air outlet 51 is used to supply air to one of the front, rear, top, bottom, left or right sides of the fresh air module 1, and the second indoor air outlet 52 is used to supply air to another of the front, rear, top, bottom, left or right sides of the fresh air module 1. Figure 5 and 5a In the illustrated embodiment, the first indoor air outlet 51 is used to supply air in a forward and upward direction, and the second indoor air outlet 52 is used to supply air in a downward and forward direction.

[0181] In some optional embodiments, the module housing 10 further includes a first air outlet duct 13, which is connected to the module housing 10 and is located at the air outlet side of the air inlet cavity 11 (fan cavity 12), and is used to construct a first indoor air outlet 51 as an air outlet path, and the air outlet airflow of the air inlet cavity 11 (fan cavity 12) can be transported to the external environment through the first air outlet duct 13. Similarly, the module housing 10 further includes a second air outlet duct, which is connected to the module housing 10 and is located at the air outlet side of the air inlet cavity 11 (fan cavity 12), and is used to construct a second indoor air outlet 52 as an air outlet path, and the air outlet airflow of the air inlet cavity 11 (fan cavity 12) can be transported to the external environment through the second air outlet duct.

[0182] In the above embodiment, the actual air supply direction can be adjusted by changing the extension direction of the first air outlet duct 13 (and the second air outlet duct) or the direction of the air outlet end of the duct. For example, in the above embodiment, the first indoor air outlet 51 is used to supply air to the front and upper direction, and the corresponding first air outlet duct 13 can be extended and formed in the front and upper direction, and its air outlet end faces the front and upper direction.

[0183] Here, the fan chamber 12 is arranged on the air outlet side of the air inlet chamber 11, and the first indoor air outlet 51 and the second indoor air outlet 52 are respectively connected to the fan chamber 12 through the fan chamber 12. In the embodiment, the first indoor air outlet 51 and the second indoor air outlet 52 are respectively connected to the outer peripheral shell wall of the fan volute 121, wherein the first indoor air outlet is connected to the top position of the outer peripheral shell wall, and the second indoor air outlet 52 is connected to the bottom position of the outer peripheral shell wall. When the impeller 122 rotates downward in the fan chamber 12, the air located upstream of the first indoor air outlet 51 will preferentially and concentratedly flow to the first indoor air outlet 51, as shown in FIG. Figure 7 and the air located upstream of the second indoor air outlet 52 will preferentially flow to the second indoor air outlet 52, such as Figure 7 The airflow is shown by the dashed arrows.

[0184] In some embodiments, in combination Figure 5b and 5cAs shown, 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 of the outer peripheral shell wall of the fan volute 121, and is used to connect 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 via the first volute air outlet 124. The second volute air outlet 125 is provided at the bottom of the outer peripheral shell wall of the fan volute 121, and is used to connect 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 via the second volute air outlet 125.

[0185] exist Figure 7 The impeller 122 shown rotates downward for the first time, and the first indoor air outlet 51 is set corresponding to the first sub-air inlet chamber 115, and is located in the middle and downstream of the rotation direction of the impeller 122, that is, the airflow from the first sub-air inlet chamber 115 to the fan volute 121 is located in the middle and upstream of the first indoor air outlet 51, so that the airflow flowing through the first sub-air inlet chamber 115 will deviate to flow toward the first indoor air outlet 51, so that most of this part of the airflow is sent out through the first indoor air outlet 51. Similarly, the second indoor air outlet 52 is set corresponding to the second sub-air inlet chamber 116, and is located in the middle and downstream of the rotation direction of the impeller 122, that is, the airflow from the second sub-air inlet chamber 116 to the fan volute 121 is located in the middle and upstream of the second indoor air outlet 52, so that the airflow flowing through the second sub-air inlet chamber 116 will deviate to flow toward the second indoor air outlet 52, so that most of this part of the airflow is sent out through the second indoor air outlet 52.

[0186] In this embodiment, the first volute air outlet 124 includes a first extension section 1241 away from the volute axis and a first volute tongue section 1242 close to the volute axis. The first extension section 1241 and the first volute tongue section 1242 are arranged relatively spaced apart, and the space between the two is used as an airflow channel. Figure 5d Similarly, the second volute air outlet 125 includes a second extension section 1251 away from the volute axis and a second volute tongue section 1252 close to the volute axis. The second extension section 1251 and the second volute tongue end are arranged opposite to each other, and the space between the two serves as an airflow channel, as shown in FIG. Figure 5e Optionally, the range of the first sub-air inlet cavity 115 conveying airflow to the fan cavity 12 is mainly the covering part of the second volute tongue segment 1252 to the first volute tongue segment 1242 in the first downward rotation direction, as shown in FIG. Figure 8 The range of the second sub-air inlet chamber 116 conveying airflow to the fan chamber 12 is mainly the covering part of the first volute tongue segment 1242 to the second volute tongue segment 1252 in the first downward rotation, such as Figure 8 The B range area is shown in FIG.

[0187] In order to realize the division of the two air delivery coverage areas mentioned above, correspondingly, in the axial projection of the partition plate 15 relative to 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 section 1242, and the longitudinal second end (longitudinal bottom end) extends to the shell wall close to the second volute tongue section 1252, as shown in FIG. Figure 8 shown.

[0188] In this embodiment, the plate body of the partition plate 15 is longitudinally extended in a curve, and the direction of the curve corresponds to the air outlet direction of the first volute air outlet 124 and the second volute air outlet 125, thereby reducing the wind resistance of air flowing through the plate surface of the partition plate 15 and reducing wind pressure loss.

[0189] Combination Figure 3e As shown, the partition plate 15 includes a first arc plate segment 151, a second arc plate segment 152 and an intermediate arc plate segment 153. In the axial projection of the partition plate 15 relative to the 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 by extending along the curvature of the first volute tongue segment 1242 of the fan volute 121 toward the axis of the fan volute 121. 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 by extending along the curvature of the second volute tongue segment 1252 of the fan volute 121 toward the axial direction of the fan volute 121. The two ends of the middle arc plate segment 153 are respectively connected to the first arc plate segment 151 and the extending ends of the second arc plate segment toward the axis, that is, respectively connected to the lower end of the first arc plate segment 151 and the upper end of the second arc plate segment 152 .

[0190] In this embodiment, combined with Figure 8 As shown, the extension direction of the first arc plate segment 151 is adapted to the first volute tongue segment 1242, and the extension direction of the second arc plate segment 152 is adapted to the second volute tongue segment 1252, so that the airflow is smoother in the process of flowing through the air inlet cavity 11, the fan cavity 12 and finally being diverted to the first volute air outlet 124 and the second volute air outlet 125, thereby reducing the resistance effect of the cavity wall on the airflow flow.

[0191] Optionally, the extension curve of the first arc segment can be a curve trajectory with the same curvature as the first volute tongue segment 1242, or a curve trajectory with an acute angle to the curve of the first volute tongue segment 1242. Similarly, the extension curve of the second arc segment can be a curve trajectory with the same curvature as the second volute tongue segment 1252, or a curve trajectory with an acute angle to the curve of the second volute tongue segment 1252. In addition, the curve trajectories of the first arc plate segment 151 and the second arc plate segment 152 each have a tendency to bend and extend toward the axis of the fan volute 121, but do not necessarily point to the axis. Another option is that the middle arc plate segment 153 is adapted to the linear trajectory of the filter element partition strip 141 of the air filter element 14.

[0192] Optionally, the first arc plate segment 151 , the second arc plate segment 152 and the middle arc plate segment 153 adopt an integrated structure, so that there are no air leakage gaps between the plate segments of the partition plate 15 , thereby improving the sealing performance of the air inlet chamber 11 .

[0193] It should be understood that the extension direction of the partition plate 15 and the longitudinal end point settings in this embodiment are mainly set according to the opening positions of the two indoor air outlets, the rotation direction of the impeller 122 and other factors. For example, the two indoor air outlets in the embodiment are respectively located at the upper and lower sides of the fan chamber 12, so the partition plate 15 as a whole also extends vertically. When the arrangement position of the indoor air outlet changes, such as changing to front and rear side air outlets, the extension direction of the partition plate 15 must also be adaptively adjusted. Therefore, other deformation adjustment schemes for the opening position of the indoor air outlet and the form of the partition plate 15 by those skilled in the art based on the technical concept disclosed in this application and combined with the actual air supply needs should also be covered within the protection scope of this application.

[0194] In some optional embodiments, combined with Fig. 9 As shown, the module housing 10 has an outdoor air outlet 114 connecting the air inlet chamber 11 and the outdoor side. Specifically, the outdoor air outlet 114 is connected to at least one of the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116, so that the outdoor fresh air in the outdoor environment can be introduced into at least one of the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116.

[0195] Here, the number of sub-air inlet chambers 11 connected to the outdoor air outlet 114 is dynamically adjusted according to the working state of the fresh air module 1. For example, in the fresh air mode, the outdoor air outlet 114 is connected to the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 at the same time. In the two-way air exchange mode, the outdoor air outlet 114 is only connected to one of the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116, and the other is not connected.

[0196] Optionally, the outdoor air vent 114 is provided 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 facilitate the switching and adjustment of various connection forms. For example, the outdoor air vent 114 can be provided on the outer cavity wall 1115, the first side wall 1111 or the second side wall 1112. Here, the common point of the outer cavity wall 1115, the first side wall 1111 or the second side wall 1112 is that at least part 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 part of the wall surface is located on the side adjacent to the second sub-air inlet cavity 116. Exemplarily, in combination Fig. 9 As shown, the outdoor air inlet is opened on the second side wall 1112 of the air inlet chamber 11, and is located on a side close to the first sub-air inlet chamber 115. In this embodiment, the fresh air mode is in the two-way air exchange mode, and the outdoor air inlet 114 is connected to the first sub-air inlet chamber 115, and is not connected to the second sub-air inlet chamber 116.

[0197] Optionally, the shape of the outdoor air outlet 114 is constructed in a circular, rectangular, square or other form, which is not limited in the present application.

[0198] In some alternative embodiments, combined with Fig.10 As shown, the module housing 10 has an indoor return air port 113 connecting the air inlet chamber 11 and the indoor side. Specifically, the indoor return air port 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 the indoor polluted air in the indoor side environment can be introduced into at least one of the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116.

[0199] Here, the number of sub-air inlet chambers 11 connected to the indoor return air outlet 113 is dynamically adjusted according to the working state of the fresh air module 1. For example, in the two-way air exchange mode, the indoor return air outlet 113 is only connected to one of the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116, and the other is not connected; in the full return air mode, the indoor return air outlet 113 is connected to the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 at the same time.

[0200] Optionally, the indoor return air vent 113 is provided 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 facilitate the switching and adjustment of various connection forms. For example, the indoor return air vent 113 can be provided on the outer cavity wall 1115, the first side wall 1111 or the second side wall 1112. Here, the common point of the outer cavity wall 1115, the first side wall 1111 or the second side wall 1112 is that at least part 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 part of the wall surface is located on the side adjacent to the second sub-air inlet cavity 116. Exemplarily, in combination Fig.11As shown, the indoor return air vent 113 is opened on the second side wall 1112 of the air inlet chamber 11 (the bottom wall of the air inlet chamber 11), and is located on a side close to the second sub-air inlet chamber 116. In this embodiment, the fresh air mode is in the two-way air exchange mode, and the indoor return air vent 113 is connected to the second sub-air inlet chamber 116, and is not connected to the first sub-air inlet chamber 115.

[0201] Optionally, the shape of the indoor return air outlet 113 is constructed in a circular, rectangular, square or other form, which is not limited in the present application.

[0202] In some optional embodiments, the fresh air module 1 further includes a return air switch unit, which is arranged at the indoor return air outlet 113, and the return air switch unit is used to controllably close or open the indoor return air outlet 113. Optionally, the return air switch unit is configured to at least close the indoor return air outlet 113 in the fresh air mode, so that the indoor polluted air on the indoor side will not be introduced into the air inlet chamber 11 in the fresh air mode; and open the indoor return air outlet 113 in the two-way air exchange mode, so that the indoor polluted air on the indoor side flows into the air inlet chamber 11 through the indoor return air outlet 113 under the drive of the negative pressure wind force of the impeller 122.

[0203] Here, the return air switch unit includes a return air damper and a first driver, and the return air damper is connected to the first driver so that the return air damper is driven to close or open the indoor return air outlet 113. Here, the return air damper can close or open the indoor return air outlet 113 in a transverse or flipping manner.

[0204] In an optional embodiment, the outdoor air vent 114 and the indoor return air vent 113 are both disposed on the second side wall 1112 of the air inlet chamber 11 and are respectively located on both sides of the partition plate 15, wherein the outdoor air vent 114 is located on the side of the partition plate 15 corresponding to the first sub-air inlet chamber 115, and the indoor return air vent 113 is located on the side of the partition plate 15 corresponding to the second sub-air inlet chamber 116. Fig.11 shown.

[0205] In some other optional embodiments, combined with Fig.12 As shown, the fresh air duct 20 includes an air duct body 21 and a pipe joint 22. The air duct body 21 extends from the indoor side to the outdoor side, and the pipe joint 22 is arranged on the indoor side end of the air duct body 21, which is used to connect the air duct body 21 and the module housing 10. In this embodiment, the pipe joint 22 is used to connect the air duct body 21 and the outdoor air outlet 114 and the air outlet switching part 30.

[0206] Here, the air duct body 21 has a long cylindrical tube body, and the inner space of the tube body is configured as an air flow channel. The air flow channel can be used as an inflow channel for outdoor fresh air and / or an exhaust channel for indoor polluted air, and the air flow can flow from one end of the air duct body 21 to the other end.

[0207] In an embodiment, the fresh air duct 20 has a first air duct channel 231 and a second air duct channel 232 which are separated from each other and are used to connect the outdoor air outlet 114 and the outdoor side. The outdoor fresh air can be introduced from the outdoor side to the outdoor air outlet 114 of the module housing 10 by the first air duct channel 231 and the second air duct channel 232 respectively.

[0208] Exemplary, combined Fig.12a As shown, a duct partition 213 is provided inside the duct body 21. The duct partition 213 is formed by extending longitudinally along the duct body 21, and divides the duct body 21 into two relatively independent duct body 21 channels, including a first duct body channel 211 and a second duct body channel 212. Similarly, a joint partition 223 is also provided inside the pipe joint 22. The joint partition 223 is formed by extending along the pipeline direction of the pipe joint 22, specifically extending from one end of the pipe joint 22 connected to the duct body 21 to one end connected to the outdoor air outlet 114, and divides the pipe joint 22 into two relatively independent joint channels, including a first joint channel 221 and a second joint channel 222. At the same time, the joint partition 223 corresponds to the position of the duct partition 213, so that the first duct body channel 211 and the first joint channel 221 together constitute the first duct channel 231, and the second duct body channel 212 and the second joint channel 222 together constitute the second duct channel 232. Fig.13 and Fig.14 Optionally, the outdoor air outlet 114 of the module housing 10 is also provided with a partition, which can be used to divide the outdoor air outlet 114 into independent air inlet paths corresponding to the two joint channels of the pipe joint 22 .

[0209] Optionally, the duct partition plate 213 divides the duct body 21 into two duct body channels with the same channel cross-sectional area. For example, if the duct body 21 has a circular cross-sectional area, the duct partition plate 213 is formed by extending along a radial line of the duct body 21 in the cross-sectional view. Figure 12b As shown. In this way, in this embodiment, the two air duct body channels can achieve the air supply effect of equal air volume delivery. For example, in the two-way air exchange mode, the two air duct body channels respectively deliver outdoor fresh air and indoor polluted air, and the outdoor fresh air intake volume is basically the same as the indoor polluted air exhaust volume, ensuring the stability of the indoor air pressure during the operation of the fresh air module 1.

[0210] Alternatively, the duct baffle 213 divides the duct body 21 into two duct body channels with different channel cross-sectional areas. For example, if the duct body 21 has a circular cross-sectional area, the duct baffle 213 is formed by extending in a straight line direction at an angle to the radial line of the duct body 21 in the cross-sectional view. Fig.12cAs shown. Alternatively, the air duct partition 213 is a non-linear partition, such as an arc-shaped plate, a folded-line plate, etc., which can also achieve unequal division of the air duct body 21 space. In this way, in this embodiment, the two air duct body 21 channels can achieve an air supply effect of unequal air volume delivery. For example, in the two-way air exchange mode, the cross-sectional area of ​​the first air duct body channel 211 is larger than the cross-sectional area of ​​the second air duct body channel 212, so that the outdoor fresh air intake volume corresponding to the first air duct body channel 211 is larger than the indoor dirty air exhaust volume corresponding to the second air duct body channel 212, so that a positive pressure air supply effect can be achieved for the indoor environment.

[0211] In some other embodiments, the indoor end of the first air duct channel 231 is defined as a first fresh air outlet 2311 , and the indoor end of the second air duct channel 232 is divided into a second fresh air outlet 2321 and a branch outlet 2322 .

[0212] 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 via the second fresh air outlet 2321 .

[0213] Furthermore, the branch pipe opening 2322 is connected between the indoor air outlet and the air outlet side of the air inlet chamber 11, and can be used to direct at least part of the air output from the air outlet side of the air inlet chamber 11 to flow to the second air duct channel 232 via the branch pipe opening 2322, and then discharge the part of the air to the outdoor side. In combination with the previous embodiment, the fan chamber 12 is located on the air outlet side of the air inlet chamber 11, and the branch pipe opening 2322 is connected between the volute air outlet of the fan chamber 12 and the indoor air outlet of the module housing 10, so that the air output from the volute air outlet can flow to one or both of the indoor air outlet and the branch pipe opening 2322. Fig.15 As shown, the branch pipe opening 2322 is arranged adjacent to the lower portion of the module housing 10 , and thus in order to save the length of the pipeline consumables, the branch pipe opening 2322 is connected between the second volute air outlet 125 of the fan chamber 12 and the second indoor air outlet 52 of the module housing 10 .

[0214] exist Fig.13 In the illustrated embodiment, the first fresh air outlet pipe opening 2311 , the second fresh air outlet pipe opening 2321 and the branch pipe opening 2322 are arranged on the pipe joint 22 of the fresh air pipe 20 .

[0215] In some optional embodiments, the fresh air module 1 further includes an air duct switch unit, which is disposed at the position of the second fresh air outlet 2321, and the air duct switch unit is used to controllably open or close the second fresh air outlet 2321. Optionally, the air duct switch unit is configured to at least open the second fresh air outlet 2321 in the fresh air mode, so that the second air duct channel 232 is connected to the outdoor air outlet 114, and the outdoor fresh air can flow into the air inlet cavity 11; and close the second fresh air outlet 2321 in the two-way air exchange mode, so that the second air duct channel 232 is blocked from the outdoor air outlet 114.

[0216] Here, the air duct switch unit includes an air duct baffle and a second driver, and the air duct baffle is drivingly connected to the second driver, so that the air duct baffle is driven to close or open the second fresh air outlet 2321.

[0217] In the previous article Fig.11 In the illustrated embodiment, since the outdoor air outlet 114 (the second fresh air outlet pipe opening) and the indoor return air outlet 113 are both arranged on the second side wall 1112 of the air inlet chamber 11, and the two are arranged adjacent to each other, in this embodiment, the outdoor air outlet 114 (the second fresh air outlet pipe opening) and the indoor return air outlet 113 can share the same switch component, and the same switch component can be used to simultaneously realize the switching of the closed / open state of the second fresh air outlet pipe opening and the indoor return air outlet 113, which can effectively simplify the number of switch components and the complexity of the module structure.

[0218] Specifically, combined Fig.16 and 16a As shown, the fresh air module 1 also includes an integrated switch unit 40, which is arranged 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 pipe port 2321 and close the indoor return air outlet 113 in the fresh air mode; and close the second fresh air outlet pipe port 2321 and open the indoor return air outlet 113 in the two-way air exchange mode.

[0219] Combination Fig.16 As shown, the integrated switch unit 40 includes a windshield 41 and an integrated driver. The windshield 41 is slidably disposed on the second side wall 1112 of the air inlet chamber 11. The integrated driver is drivingly connected to the windshield 41, and is configured to at least drive the windshield 41 to move between a first sliding position and a second sliding position; when the windshield 41 is in the first sliding position, the windshield 41 opens the first fresh air outlet 2311 and the second fresh air outlet 2321, and blocks the indoor return air outlet 113, as shown in FIG. Fig.17a and the windshield 41 is in the second sliding position, the windshield 41 blocks the second fresh air outlet 2321, and open the indoor return air outlet 113 and the first fresh air outlet 2311, as Fig.17bHere, the first sliding position is located at a position of the second side wall 1112 close to the second sub-air inlet chamber 116 , and the second sliding position is located at a position of the second side wall 1112 close to the first sub-air inlet chamber 115 .

[0220] Optionally, a baffle rack 42 is provided on one side (or side) of the windshield 41, and the baffle rack 42 is formed along the longitudinal extension of the side. The integrated driver includes an integrated drive motor 43 and an integrated gear 44, and the integrated gear 44 is sleeved on the drive shaft of the integrated drive motor 43 and meshed with the baffle rack 42. In this way, by controlling the integrated drive motor 43 to rotate in both directions, the windshield 41 is driven by the cooperation of the integrated gear 44 and the baffle rack 42 to move to the first sliding position or the second sliding position.

[0221] In some other optional embodiments, the integrated drive is further configured to move closer to or away from the third sliding position. Here, when the wind shield 41 is in the third sliding position, the wind shield 41 completely blocks the outdoor air outlet 114, so that the first air duct channel 231 and the second air duct channel 232 are both in a blocked state with the air inlet cavity 11, and the indoor return air outlet 113 is in an open state. Fig.17c shown.

[0222] exist Fig.17c When the wind shield 41 is at 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 port 113.

[0223] In some optional embodiments, the partition plate 15 is a split structure, which includes a first partition plate 154 and a second partition plate 155 connected along the longitudinal direction of the plate body. Figures 17a to 17c Optionally, the first baffle 154 is composed of the first arc plate segment 151 and the middle arc plate segment 153 in the above embodiment, and the second baffle 155 is composed of the second arc plate segment 152; or, the first baffle 154 is composed of the first arc plate segment 151, and the second baffle 155 is composed of the second arc plate segment 152 and the middle arc plate segment 153.

[0224] Here, the first partition 154 is fixed in the air inlet cavity 11. The second partition 155 is arranged on the wind shield 41 of the integrated switch unit 40, and the second partition 155 can slide synchronously with the wind shield 41. In this embodiment, the bottom end of the second partition 155 is fixed to the side surface of the wind shield 41 facing the air inlet cavity 11. Optionally, the second partition 155 and the wind shield 41 are an integrated structure, or the bottom end of the second partition 155 is fixed to the corresponding side surface of the wind shield 41 by gluing, welding, etc.

[0225] Specifically, when the wind shield 41 moves to the first sliding position, the first partition 154 and the second partition 155 are staggered, and the second partition 155 moves into the cavity space of the second sub-air inlet chamber 116, so that the area originally separated and blocked by the second partition 155 is opened, so that the fresh air duct 20 is connected with both the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116, and the outdoor fresh air can flow to the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 at the same time. When the wind shield 41 moves to the second sliding position, the first partition 154 and the second partition 155 are connected, and the first partition 154 and the second partition 155 simultaneously play the role of separating the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116, so that the fresh air duct 20 is connected with the first sub-air inlet chamber 115 only through the outdoor air outlet 114, and the fresh air duct 20 is blocked from the second sub-air inlet chamber 116.

[0226] Furthermore, when the wind shield 41 moves to the third sliding position, the first partition 154 and the second partition 155 are staggered, and the second partition 155 moves to the cavity space of the first sub-air inlet chamber 115, so that the area originally separated and blocked by the second partition 155 is opened, so that the indoor return air outlet 113 is connected with the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116, and the indoor air can flow to the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 at the same time.

[0227] In some other optional 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 arranged at the connecting position of the branch pipe opening 2322, the second indoor air outlet 52 and the air outlet side of the air inlet chamber 11. The air outlet switching part 30 can be used for controlled switching so that the air outlet side of the air inlet chamber 11 is connected to one of the branch pipe opening 2322 and the second indoor air outlet 52, and the other is blocked.

[0228] In combination with the above embodiments, the fan cavity 12 is located at the air outlet side of the air inlet cavity 11, and the second indoor air outlet 52 is connected to the fan cavity 12. In this embodiment, the air outlet switching unit 30 is configured to be switchable at least between a fresh air state and a two-way air exchange state; wherein in the fresh air state, the air path of the fan cavity 12 and the second indoor air outlet 52 is connected, and the air path of the branch pipe port 2322 is blocked; in the two-way air exchange state, the air path of the fan cavity 12 and the branch pipe port 2322 is connected, and the air path of the second indoor air outlet 52 is blocked.

[0229] Combination Fig.18b As shown, the air outlet switching unit 30 includes a switching housing 31 and an air blocking assembly.

[0230] The switch housing 31 is internally structured with a switch air cavity, and a switch air inlet 311, a first switch air outlet 312, and a second switch air outlet 313 communicating with the switch air cavity. The switch housing 31 is mounted on the fan volute 121, and the switch air inlet 311 is connected to the second volute air outlet 125 of the fan volute 121, and the first switch air outlet 312 is connected to the branch pipe 2322 of the second air duct channel 232, and the second switch air outlet 313 can be used as the "second indoor air outlet 52" mentioned above.

[0231] Optionally, the wind blocking assembly includes a wind blocking block 32 and a wind blocking motor 33, such as Fig.19 As shown. The wind blocking block 32 is rotatably disposed in the switching air cavity; the wind blocking motor 33 is drivingly connected to the wind blocking block 32, and is configured to at least drive the wind blocking block 32 to move between a first rotation position and a second rotation position. The first rotation position corresponds to the fresh air state. When the wind blocking block 32 is in the first rotation position, it blocks the first switching air outlet 312 (branch pipe opening 2322), so that the switching air inlet 311 is only connected to the second switching air inlet 311 (second indoor air outlet 52). Fig.20a The second rotation position corresponds to the two-way air exchange state. When the wind blocking block 32 is in the second rotation position, it blocks the second switching air outlet 313 (the second indoor air outlet 52), so that the switching air inlet 311 is only connected to the first switching air inlet 311 (branch pipe port 2322). Fig.20b shown.

[0232] In some optional embodiments, the switch air inlet 311, the first switch air outlet 312 and the second switch air outlet 313 are arranged at intervals in the switch housing 31 along the circumferential direction of the rotation axis of the air blocking block 32. Fig.20a and 20b As shown, the switch air inlet 311 is located at the upper side of the rotation axis, the first switch air outlet 312 is located at the right side of the rotation axis, and the second switch air outlet 313 is located at the lower left side of the rotation axis. In this way, the air blocking block 32 can switch between multiple set rotation positions during the process of rotating around the outer circumference of its rotation axis.

[0233] Optionally, the switch housing 31 includes a circular cavity 314 , and the outer periphery of the circular cavity 314 has arc-shaped openings corresponding to the switch air inlet 311 , the first switch air outlet 312 , and the second switch air outlet 313 , respectively.

[0234] Combination Fig.18a and 18bAs shown, the wind blocking block 32 includes a central rotating shaft 321 and a wind blocking baffle 322. The central rotating shaft 321 is coaxially arranged at the center of the circular cavity 314 and is drivingly connected to the wind blocking motor 33, which is arranged at an axial outer side of the switching housing 31. The wind blocking baffle 322 is fixedly connected to the central rotating shaft 321, so that the wind blocking motor 33 can drive the wind blocking baffle 322 to rotate in the circular cavity 314 through the central rotating shaft 321.

[0235] Optionally, the wind blocking baffle 322 includes an arc plate 3221 and a support plate 3222. The arc plate 3221 is formed by extending along the circumference of the circular cavity 314, and the arc of the arc plate 3221 is greater than or equal to the arc of each arc opening, so that any arc opening can be blocked during the rotation process. The support plate 3222 is used to connect the central shaft 321 and the wind blocking baffle 322, and is constructed as a fan-shaped sheet body whose plate surface extends radially from the central shaft 321, the arc edge of the support plate 3222 is fixedly connected to the wind blocking baffle 322, and the arc center is fixedly connected to the central shaft 321, such as Fig.19a shown.

[0236] Optionally, the motor housing of the wind blocking motor 33 is provided with a fixing ear plate 331, and the fixing ear plate 331 is provided with a screw hole, such as Fig.19b The outer wall of the circular cavity 314 is provided with a fixing seat 315, as shown Fig.21 The wind blocking motor 33 is assembled in the circular cavity 314 through the fixing ear plate 331 and the fixing seat 315 .

[0237] In combination with the forms of the fresh air module 1 shown in the above embodiments, several air exchange modes of the fresh air module 1 of the present application are described below. (Outdoor fresh air is indicated by a solid arrow, and indoor polluted air is indicated by a dotted arrow)

[0238] Optionally, the working mode of the fresh air module 1 includes a fresh air mode. The fresh air mode means that the fresh air module 1 is used to transport outdoor fresh air from the outdoor side to the indoor side. In this mode, the fresh air module 1 does not transport indoor polluted air to the outdoor side. The fresh air mode can supplement outdoor fresh air with better air quality to the indoor side, thereby improving the air quality of the indoor side.

[0239] 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 cavity 11, the first indoor air outlet 51 and / or the second indoor air outlet 52. Specifically, in the fresh air mode, the impeller 122 keeps rotating in a set rotation direction (such as the first rotation direction); the return air switch part is controlled 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 cavity 115 and the second sub-air inlet cavity 116 of the air inlet cavity 11; the wind blocking block 32 of the air outlet switching mechanism is controlled to be in the first rotation position, so that the second air duct channel 232 is blocked from the switching air cavity, and the fan cavity 12 is connected to the first indoor air outlet 51 and the second indoor air outlet 52.

[0240] In this way, when the impeller 122 rotates, negative pressure suction is generated on the side of the air inlet chamber 11, attracting outdoor fresh air on the outdoor side to flow toward the indoor side through the first air duct channel 231 and the second air duct channel 232, and enter the air inlet chamber 11 through the outdoor air outlet 114 of the module housing 10. Fig.22a and 22c Afterwards, the outdoor fresh 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 in FIG. Figure 22b The arrows show the direction of air flow.

[0241] Alternatively, the working mode of the fresh air module 1 includes a two-way air exchange mode. The two-way air exchange mode means that the fresh air module 1 is used to simultaneously transport outdoor fresh air from the outdoor side to the indoor side, and to transport indoor polluted air from the indoor side to the outdoor side. The two-way air exchange mode can simultaneously replenish outdoor fresh air to the indoor side and exhaust indoor polluted air from the indoor side, thereby achieving synchronous replacement of fresh air and polluted air, which can improve indoor air quality more quickly.

[0242] In some embodiments, in the two-way air exchange mode, it is divided into two flow paths, an outdoor fresh air flow path and an indoor exhaust air flow path. Specifically, in the two-way air exchange mode, the impeller 122 keeps rotating in a set rotation direction (such as a first rotation direction); the return air switch part is controlled to open the indoor return air port 113, and the second fresh air outlet port 2321 of the second air duct channel 232 is blocked; the wind blocking block 32 of the air outlet switching mechanism is controlled to be located at the second rotation position, so that the branch port 2322 of the second air duct channel 232 is connected to the switching air cavity, and the switching air cavity is blocked from the second indoor air outlet 52, so that the fan cavity 12 is connected to the first indoor air outlet 51 and the second air duct channel 232.

[0243] In this way, when the impeller 122 rotates, negative pressure suction is generated on the side of the air inlet chamber 11, attracting outdoor fresh air on the outdoor side and indoor polluted air on the indoor side to flow into the air inlet chamber 11 at the same time. Among them, the outdoor fresh air flow path is that the outdoor fresh air is sequentially transported to the first indoor air outlet 51 through the first air duct channel 231, the first sub-air inlet chamber 115, and the fan chamber 12, and the outdoor fresh air is sent into the indoor environment through the first indoor air outlet 51. Fig.23a and 23c The indoor exhaust air flow path includes indoor polluted air being transported to the second air duct channel 232 through the indoor return air port 113, the second sub-air inlet chamber 116, and the fan chamber 12 in sequence, and the indoor polluted air is finally discharged to the outdoor side through the second air duct channel 232. Figure 23b and 23c The arrows show the direction of air flow.

[0244] In some optional embodiments, the present application also provides an air conditioner 6, including an air conditioner body and a fresh air module 1 as in any of the above embodiments, such as Fig.24 and 24a shown.

[0245] Optional, combined Fig.24 and 24a 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 placed inside the indoor unit casing 61. Optionally, the heat exchange component is arranged in the middle of the indoor unit casing 61 and in a space on one side thereof, and the fresh air module 1 is arranged in a space on the other side of the indoor unit casing 61.

[0246] Here, the heat exchange assembly includes an indoor heat exchange air duct, an indoor heat exchanger 62 and an indoor fan. The indoor heat exchange air duct has a heat exchange return air port and a heat exchange air outlet. The indoor heat exchanger 62 and the indoor fan are arranged in the indoor heat exchange air duct, wherein the indoor heat exchanger 62 is used to perform heat exchange with the return air flow flowing through the air duct of the indoor heat exchanger 62. The indoor fan is used to rotate to generate air power to drive the air flow to flow through the indoor heat exchange air duct.

[0247] At the same time, 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. Among them, the first indoor air outlet 51 of the fresh air module 1 corresponds to the first casing air outlet 611 and is interconnected, and the second indoor air outlet 52 corresponds to the second casing air outlet 612 and is interconnected, so that the outdoor fresh air (or filtered indoor air) flowing through the fresh air module 1 can be sent into the indoor environment through the first casing air outlet 611 and the second casing air outlet 612. And, the indoor return air outlet 113 of the fresh air module 1 corresponds to the casing return air outlet 613 and is interconnected, so that the indoor polluted air can flow into the fresh air module 1 through the casing return air outlet 613.

[0248] The above description and the accompanying drawings sufficiently illustrate the 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. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The 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 the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air filter element, characterized in that: It comprises a first filter element part and a second filter element part which are arranged side by side in the longitudinal direction of the air filter element, and the first filter element part and the second filter element part are staggered in the thickness direction of the air filter element so that the space formed by the staggered space is used as the non-filtering air flow path area.

2. The air filter element according to claim 1, characterized in that: The air filter element also has a filter element frame, which includes: The first frame is structured with a receiving groove for receiving the first filter element; The second frame is structured with a receiving groove for receiving the second filter element; The first frame and the second frame are arranged side by side in the longitudinal direction, and the adjacent sides of the first frame and the second frame are fixedly connected in an interlaced manner.

3. The air filter element according to claim 2, characterized in that: The first frame and the second frame are an integrally formed structure.

4. The air filter element according to any one of claims 1 to 3, characterized in that: The first filter element and the second filter element satisfy the following relationship: T1 ≥ T2, and / or, F1 ≤ F2; Wherein, T1 is the thickness of the first filter element, T2 is the thickness of the second filter element; F1 is the filtration rate of the first filter element, and F2 is the filtration rate of the second filter element.

5. A fresh air module, characterized in that: include: The module housing has an air inlet cavity and a fan cavity for air flow to flow through, and the fan cavity accommodates an impeller for driving air to flow through the module housing; The air filter element according to any one of claims 1 to 4, arranged in an air inlet cavity, and configured to filter air flowing through the air inlet cavity; The second filter element is located on a side away from the fan chamber; An outdoor air outlet is provided on the wall of the air inlet cavity on the windward side of the air filter element; The indoor return air inlet is opened on the cavity wall of the air inlet cavity on the leeward side of the air filter element and corresponds to the air non-filtering flow path area so that the indoor return air does not flow through the air filter element and enters the fan cavity.

6. The fresh air module according to claim 5, characterized in that: The windward surface of the air filter element is spaced apart from the cavity wall of the air inlet cavity.

7. The fresh air module according to claim 5, characterized in that: The air inlet cavity also has one or more shielding members, which are arranged on the peripheral side of the air non-filtering flow path area to close the air leakage gap between the air filter element and the air inlet cavity.

8. The fresh air module according to claim 5, characterized in that: The indoor return air outlet is opened on the bottom wall of the air inlet cavity; The air inlet cavity is provided with a slideway assembly for defining a pulling track of the air filter element. The slideway assembly includes a first track and a second track. The first track is provided on the upper side of the air filter element, and the second track is provided on the lower side of the air filter element. The interval between the first track and the second track is configured as a pulling space for the air filter element. Among them, the first track extends toward the air filter element to block the air leakage gap between the upper side of the air filter element and the air inlet chamber, and / or the second track is spaced apart from the air filter element to form an escape space for air to flow from the indoor return air outlet to the air non-filtering flow path area.

9. The fresh air module according to any one of claims 5 to 8, characterized in that: The air non-filtering flow path area is constructed so that the flow path area gradually expands from the indoor return air outlet.

10. An air conditioner, characterized in that: include: Air conditioner body; and, The fresh air module as claimed in any one of claims 5 to 9.

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