Fresh air pipe, fresh air module and air conditioner

Abstract

The invention relates to the technical field of indoor fresh air exchange, and discloses a fresh air pipe which comprises an air pipe body, an air inlet pipe, an air outlet pipe and an air outlet pipe. The air volume adjusting assembly comprises an air pipe partition plate and a driving device; the air pipe partition plate is movably arranged in the pipe body and extends in the length direction of the pipe body to be formed, and the air flow channel is divided into a first air pipe body channel and a second air pipe body channel. The driving device is in driving connection with the air pipe partition plate and is configured to controllably drive the air pipe partition plate to rotate relative to the air pipe body so as to adjust the channel space proportion of the first air pipe body channel and the second air pipe body channel. According to the embodiment, the air volume adjusting assembly is additionally arranged on the fresh air pipe, the channel space proportion of the two air pipe body channels can be changed, and then the effect of adjusting the air inlet volume and the air outlet volume is achieved. The invention further discloses the fresh air module and the air conditioner.

Description

Technical Field

[0001] This application relates to the technical field of indoor fresh air replacement, for example, to a fresh air duct, a fresh air module, and an air conditioner. Background Art

[0002] With the increasing attention of people to air quality issues, users' requirements for the air quality in daily living rooms, bedrooms, etc. are also getting higher and higher. There are many factors that cause the decline of indoor air quality. For example, air pollutants such as formaldehyde, benzene, and ammonia volatilized from indoor decoration materials, or the indoor air is not circulated due to closed doors and windows at night, and a large amount of harmful gases such as carbon dioxide and formaldehyde will accumulate indoors. These air quality problems will more or less affect the health of indoor users, such as inducing discomfort symptoms such as chest tightness, shortness of breath, dry mouth, and difficulty in breathing.

[0003] One of the effective ways to solve the above air quality problems is to maintain ventilation between the indoor and outdoor, introduce fresh air from the outdoor side into the indoor environment, so as to increase the oxygen content in the indoor air and reduce the concentration of air pollutants. In this case, the "fresh air air conditioner" product came into being. The fresh air air conditioner adds components such as a fresh air module and a fresh air duct on the basis of traditional air conditioner models, and uses a fan to suck fresh air from the outdoor side into the indoor side environment to improve the indoor air quality.

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

[0005] In the related product design, there is also a fresh air module solution with dual functions of outdoor fresh air and indoor exhaust. The air inlet cavity of the fresh air module is divided into two sub-cavities by a partition plate, and the two sub-cavities can be used to transport outdoor fresh air and indoor polluted air to the fan cavity respectively; at the same time, each of the two sub-cavities is configured with a separate air duct, and fresh air is input into the room and polluted air is discharged to the outdoor through the two air ducts respectively. However, the cooperation form between the air cavity and the air duct not only requires an additional number of holes to be drilled, but also the intake and exhaust air volumes are not easy to adjust.

[0006] It should be noted that the information disclosed in the above background art 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 those of ordinary skill in the art. Summary of the Invention

[0007] To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. The summary is not a general review, nor is it intended to identify key / important elements or delineate the protection scope of these embodiments, but rather serves as a preface to the subsequent detailed description.

[0008] Embodiments of the present disclosure provide a fresh air duct, a fresh air module, and an air conditioner to solve the technical problem in the related art that the air duct form of the fresh air module is not convenient for adjusting the intake and exhaust air volumes.

[0009] According to an embodiment of the first aspect of the present application, a fresh air duct is provided, including:

[0010] A duct body having a long tubular body, and the internal space of the tubular body is configured as an air flow channel;

[0011] An air volume adjustment component, including a duct partition and a driving device; wherein, the duct partition is movably arranged in the duct body and extends along the length direction of the duct body, and divides the air flow channel into a first duct body channel and a second duct body channel; the driving device is drivingly connected to the duct partition and is configured to controllably drive the duct partition to rotate relative to the duct body to adjust the channel space ratio of the first duct body channel and the second duct body channel.

[0012] In some alternative embodiments, in the lateral direction of the duct partition, the duct partition has a first partition side edge and a second partition side edge; wherein, the first partition side edge is rotatably assembled with the inner pipe wall of the duct body and is configured as a swing fulcrum; the second partition side edge is configured as a swing free side;

[0013] The driving device is configured to controllably drive the duct partition to swing with the first partition side edge as the swing fulcrum to change the channel space ratio of the first duct body channel and the second duct body channel after swinging.

[0014] In some alternative embodiments, a fulcrum accommodation groove is recessed on the inner pipe wall of the duct body corresponding to the first partition side edge, and the first partition side edge of the duct partition is embedded in the fulcrum accommodation groove and can rotate relative to the fulcrum accommodation groove;

[0015] Alternatively, the duct body and the first partition side edge of the duct partition are pivotally connected by a partition rotating shaft.

[0016] In some alternative embodiments, a secondary partition protruding towards the inside is formed on the inner pipe wall of the duct body, and the secondary partition extends along the length direction of the duct body; the secondary partition and the duct partition cooperate to divide the air flow channel into a first duct body channel and a second duct body channel;

[0017] Wherein, the fulcrum accommodation groove or the partition rotating shaft is arranged on the protruding side edge of the secondary partition, so that the first partition side edge of the duct partition can be rotatably assembled with the protruding side edge of the secondary partition.

[0018] In some alternative embodiments, a swing accommodation groove is recessed on the inner pipe wall of the duct body corresponding to the second partition side edge;

[0019] Taking the intersection point of the reverse extension line of the connection line between the swing fulcrum and the axis of the air duct body and the inner tube wall of the air duct body as the reference point, the swing accommodating groove has a first groove section formed by extending along the first circumferential direction and / or a second groove section formed by extending along the second circumferential direction; the first circumferential direction is located on one side of the first air duct body channel, and the second circumferential direction is located on one side of the second air duct body channel and is opposite to the first circumferential direction;

[0020] The second partition side of the air duct partition is movably embedded in the swing accommodating groove, so as to be driven by the driving device to swing from the reference point to the first groove section and / or swing from the reference point to the second groove section.

[0021] In some alternative embodiments, the groove bottom surface of the swing accommodating groove is configured as an arc surface, and the curvature of the arc surface is adapted to the curvature of the swing track of the second partition side.

[0022] In some alternative embodiments, a stop block is respectively arranged on both sides of the swing of the second partition side on the inner tube wall of the air duct body, and the two stop blocks are arranged at intervals to jointly define the swing range of the second partition side.

[0023] In some alternative embodiments, the driving device is drivingly connected to the first partition side or the second partition side.

[0024] In some alternative embodiments, the driving device includes a partition motor and a gear mechanism, and the partition motor is drivingly connected to the second partition side through the gear mechanism;

[0025] Among them, the gear structure includes:

[0026] A main gear sleeved on the output shaft of the partition motor;

[0027] A sub-gear, which is configured as a sector gear, wherein a clamping groove for clamping the second partition side is formed on the center side of the sector gear, and teeth that can be meshed with the main gear are formed on the circumferential side.

[0028] According to an embodiment of the second aspect of the present application, a fresh air module is provided, including a module body and a fresh air duct as described in any one of the embodiments of the first aspect above, and the module body is in air flow communication with the fresh air duct.

[0029] According to an embodiment of the third aspect of the present application, an air conditioner is provided, including an air conditioner body; and a fresh air module as described in the second aspect above, which is assembled on the air conditioner body.

[0030] The fresh air duct, fresh air module and air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0031] In the embodiments of the present disclosure, an air volume adjusting component is additionally provided on the fresh air duct. The air duct partition can be driven by a driving device to rotate relative to the air duct body, so as to change the proportion of the channel space of the two air duct body channels, and further play a role in adjusting the air volume of the intake and exhaust air. In this embodiment, the two air duct body channels are located on the same fresh air duct, so there is no need to increase the number of additional holes, and the air duct partition changes the air passage areas of both the intake air channel and the exhaust air channel simultaneously, making the operation more simple and fast.

[0032] The above general description and the following description are only exemplary and explanatory, and are not used to limit the present application. Brief Description of the Drawings

[0033] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and among them:

[0034] Figure 1 is the overall structural schematic diagram of the fresh air module provided by an embodiment of the present disclosure;

[0035] Figure 1a is the disassembled structural schematic diagram of the fresh air module provided by an embodiment of the present disclosure;

[0036] Figure 2 is the overall structural schematic diagram of the module housing provided by an embodiment of the present disclosure;

[0037] Figure 2a is the disassembled schematic diagram of the module housing from Perspective One provided by an embodiment of the present disclosure;

[0038] Figure 2b is the disassembled schematic diagram of the module housing from Perspective Two provided by an embodiment of the present disclosure;

[0039] Figure 3a is the cross-sectional structural schematic diagram of the intake air cavity provided by an embodiment of the present disclosure;

[0040] Figure 3b is the disassembled structural schematic diagram of the intake air cavity provided by an embodiment of the present disclosure;

[0041] Figure 3c is the structural schematic diagram of the air outlet cavity wall provided by an embodiment of the present disclosure;

[0042] Figure 3d is the assembly schematic diagram of the partition plate provided by an embodiment of the present disclosure;

[0043] Figure 3e is the structural schematic diagram of the partition plate provided by another embodiment of the present disclosure;

[0044] Figure 4 It is a schematic structural diagram of an air filter element provided by an embodiment of the present disclosure;

[0045] Figure 4a It is a schematic disassembled structural diagram of an air filter element provided by an embodiment of the present disclosure;

[0046] Figure 4b It is an external schematic diagram of an air inlet cavity provided by another embodiment of the present disclosure;

[0047] Figure 4c It is a schematic structural diagram of a slot provided by an embodiment of the present disclosure;

[0048] Figure 4d It is a schematic structural diagram of an air outlet cavity wall provided by another embodiment of the present disclosure;

[0049] Figure 5 It is a schematic structural diagram of a fan cavity provided by an embodiment of the present disclosure;

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

[0051] Figure 5b It is a schematic sectional view of a fan cavity provided by an embodiment of the present disclosure;

[0052] Figure 5c It is a schematic structural diagram of a fan volute provided by an embodiment of the present disclosure;

[0053] Figure 5d It is a schematic structural diagram of a first volute air outlet provided by an embodiment of the present disclosure;

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

[0055] Figure 6 It is a schematic structural diagram of an impeller provided by an embodiment of the present disclosure;

[0056] Figure 7 It is a schematic diagram of the air flow direction in a fan cavity provided by an embodiment of the present disclosure;

[0057] Figure 8 It is a schematic axial projection diagram of a partition plate relative to the direction of a fan volute;

[0058] Figure 9 It is a schematic diagram of an outdoor air outlet of a module housing provided by an embodiment of the present disclosure;

[0059] Figure 10 It is a schematic diagram of an indoor air return opening of a module housing provided by an embodiment of the present disclosure;

[0060] Figure 11 Schematic diagram of the second side wall of the air inlet cavity provided by an embodiment of the present disclosure;

[0061] Figure 12 Schematic diagram of the structure of the fresh air duct provided by an embodiment of the present disclosure;

[0062] Figure 12a Schematic diagram of the structure of the air duct body provided by an embodiment of the present disclosure;

[0063] Figure 12b Schematic cross-sectional view of the air duct body provided by an embodiment of the present disclosure;

[0064] Figure 12c Schematic cross-sectional view of the air duct body provided by another embodiment of the present disclosure;

[0065] Figure 12d Schematic diagram of the structure of the pipe joint provided by an embodiment of the present disclosure;

[0066] Figure 12e Schematic cross-sectional view of the pipe joint provided by an embodiment of the present disclosure;

[0067] Figure 13 Schematic diagram of the overall structure of the fresh air module provided by another embodiment of the present disclosure;

[0068] Figure 13a Schematic diagram of the structure of the adsorption energy pipe provided by another embodiment of the present disclosure;

[0069] Figure 13b is Figure 13a explosion schematic diagram of

[0070] Figure 13c Schematic diagram of the assembly of the air duct body and the air volume adjustment component provided by another embodiment of the present disclosure;

[0071] Figure 13d Schematic cross-sectional view of the air duct body provided by an embodiment of the present disclosure;

[0072] Figure 13e Schematic diagram of the air duct partition located at the reference position provided by an embodiment of the present disclosure;

[0073] Figure 13f Schematic diagram of the air duct partition located at the first position provided by an embodiment of the present disclosure;

[0074] Figure 13g Schematic diagram of the air duct partition located at the second position provided by an embodiment of the present disclosure;

[0075] Figure 13h Schematic diagram of the air volume adjustment component provided by an embodiment of the present disclosure;

[0076] Figure 13i Schematic diagram of the secondary gear of the driving device provided by an embodiment of the present disclosure;

[0077] Figure 14 Schematic flow chart of the air volume control method for the fresh air module provided by an embodiment of the present disclosure;

[0078] Figure 14a Schematic flow chart of the air volume control method for the fresh air module provided by another embodiment of the present disclosure;

[0079] Figure 14b Schematic flow chart of the air volume control method for the fresh air module provided by another embodiment of the present disclosure;

[0080] Figure 14c Schematic flow chart of the air volume control method for the fresh air module provided by another embodiment of the present disclosure;

[0081] Figure 14d Schematic diagram of the air volume control device for the fresh air module provided by another embodiment of the present disclosure;

[0082] Figure 15 Schematic assembly diagram of the pipe joint with the module housing and the air outlet switching part provided by an embodiment of the present disclosure;

[0083] Figure 16 Schematic structural diagram of the integrated switch part provided by an embodiment of the present disclosure;

[0084] Figure 16a Schematic assembly diagram of the integrated switch part and the module housing provided by an embodiment of the present disclosure;

[0085] Figure 17a Schematic diagram of the wind deflector in the first sliding position provided by an embodiment of the present disclosure;

[0086] Figure 17b Schematic diagram of the wind deflector in the second sliding position provided by an embodiment of the present disclosure;

[0087] Figure 17c Schematic diagram of the wind deflector in the third sliding position provided by an embodiment of the present disclosure;

[0088] Figure 18 Schematic structural diagram of the air outlet switching part provided by an embodiment of the present disclosure;

[0089] Figure 18a Schematic cross-sectional structural diagram of the air outlet switching part provided by an embodiment of the present disclosure;

[0090] Figure 18b Schematic disassembly structural diagram of the air outlet switching part provided by an embodiment of the present disclosure;

[0091] Figure 19 It is a schematic structural diagram of a wind plug component provided by an embodiment of the present disclosure;

[0092] Figure 19a It is a schematic structural diagram of a wind plug block provided by an embodiment of the present disclosure;

[0093] Figure 19b It is an assembly schematic diagram of a wind plug motor and a switching housing provided by an embodiment of the present disclosure;

[0094] Figure 20a It is a schematic diagram of the wind plug block located at the first rotation position provided by an embodiment of the present disclosure;

[0095] Figure 20b It is a schematic diagram of the wind plug block located at the second rotation position provided by an embodiment of the present disclosure;

[0096] Figure 21 It is an external schematic diagram of a switching housing provided by an embodiment of the present disclosure;

[0097] Figure 21a It is a sectional schematic diagram of a switching housing provided by an embodiment of the present disclosure;

[0098] Figure 21b It is an assembly schematic diagram of an air outlet switching part, a module housing, and a fresh air pipe provided by an embodiment of the present disclosure;

[0099] Figure 22a It is an external structural schematic diagram of a fresh air module provided by another embodiment of the present disclosure;

[0100] Figure 22b It is a sectional view of a fresh air module from a first perspective provided by another embodiment of the present disclosure;

[0101] Figure 22c It is a sectional view of a fresh air module from a second perspective provided by another embodiment of the present disclosure;

[0102] Figure 22d It is a cooperation schematic diagram of a movable partition and a partition driver provided by another embodiment of the present disclosure;

[0103] Figure 22e It is a state schematic diagram of the movable partition in the first position provided by another embodiment of the present disclosure;

[0104] Figure 22f It is a state schematic diagram of the movable partition in the second position provided by another embodiment of the present disclosure;

[0105] Figure 22g It is a cooperation schematic diagram of a first partition, a second partition, and a partition driver provided by another embodiment of the present disclosure;

[0106] Figure 22hIt is the third perspective sectional view of the fresh air module provided by another embodiment of the present disclosure;

[0107] Figure 23a It is the schematic diagram of the air flow direction in the air inlet cavity under the all-fresh air mode provided by an embodiment of the present disclosure;

[0108] Figure 23b It is the schematic diagram of the air flow direction in the fan cavity and the air outlet switching part under the all-fresh air mode provided by an embodiment of the present disclosure;

[0109] Figure 23c It is the schematic diagram of the air flow direction in the fresh air pipe under the all-fresh air mode provided by an embodiment of the present disclosure;

[0110] Figure 24a It is the schematic diagram of the air flow direction in the air inlet cavity under the two-way air exchange mode provided by an embodiment of the present disclosure;

[0111] Figure 24b It is the schematic diagram of the air flow direction in the fan cavity and the air outlet switching part under the two-way air exchange mode provided by an embodiment of the present disclosure;

[0112] Figure 24c It is the schematic diagram of the air flow direction in the fresh air pipe under the two-way air exchange mode provided by an embodiment of the present disclosure;

[0113] Figure 25a It is the schematic diagram of the air flow direction in the air inlet cavity under the all-return air mode provided by an embodiment of the present disclosure;

[0114] Figure 25b It is the schematic diagram of the air flow direction in the fan cavity and the air outlet switching part under the all-return air mode provided by an embodiment of the present disclosure;

[0115] Figure 25c It is the schematic diagram of the air flow direction in the fan cavity and the air outlet switching part under the all-return air mode provided by another embodiment of the present disclosure;

[0116] Figure 25d Is Figure 25c The schematic diagram of the air flow direction in the fresh air pipe in the embodiment;

[0117] Figure 26 It is the schematic diagram of the external structure of the air conditioner provided by an embodiment of the present disclosure;

[0118] Figure 26a It is the schematic diagram of the internal structure of the air conditioner provided by an embodiment of the present disclosure.

[0119] Reference numerals:

[0120] 1. Fresh air module;

[0121] 10. Module housing; 11. Air inlet chamber; 1111. First side wall; 1112. Second side wall; 1113. Third side wall; 1114. Fourth side wall; 1115. Outer chamber wall; 1116. Air outlet chamber wall; 112. Air inlet of the air inlet chamber; 113. Indoor air return opening; 114. Outdoor air opening; 115. First sub-air inlet chamber; 116. Second sub-air inlet chamber; 117. Socket; 118. Slot; 12. Fan chamber; 121. Fan volute; 1211. First volute part; 1212. Second volute part; 122. Impeller; 1221. Hub; 1222. Blade; 1223. Air inlet passage; 123. Air inlet of the volute; 124. First volute air 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 part; 143. Second filter element part; 15. Partition plate; 151. First arc plate section; 152. Second arc plate section; 153. Intermediate arc plate section; 154. First partition; 155. Second partition; 16. Partition rib; 171. First track; 172. Second track;

[0122] 181. Movable partition; 182. Partition driver; 183. First static partition; 1831. First straight plate section; 1832. First circular arc section; 184. Second static partition; 1841. Second straight plate section; 1842. Second circular arc section; 191. First partition plate; 1911. Avoidance groove; 192. Second partition plate;

[0123] 20. Fresh air duct; 21. Duct body; 211. First duct body passage; 212. Second duct body passage; 213. Duct partition; 2131. First partition side; 2132. Second partition side; 2141. Fulcrum accommodation groove; 2142. Swing accommodation groove; 22. Pipe joint; 221. First joint passage; 222. Second joint passage; 223. Joint partition; 231. First duct passage; 2311. First fresh air outlet of the duct; 232. Second duct passage; 2321. Second fresh air outlet of the duct; 2322. Branch pipe opening; 24. Air volume adjustment component; 241. Partition motor; 2421. Main gear; 2422. Sub-gear; 24221. Clamping groove; 243. Stop block; 244. Motor mounting seat;

[0124] 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. Fixed seat; 32. Air blocking block; 321. Central rotating shaft; 322. Air blocking baffle; 3221. Arc-shaped plate member; 3222. Support plate; 33. Air blocking motor; 331. Fixed ear plate;

[0125] 40. Integrated switch part; 41. Windshield; 42. Baffle rack; 43. Integrated drive motor; 44. Integrated gear;

[0126] 51. First indoor air outlet; 52. Second indoor air outlet;

[0127] 6. Air conditioner; 61. Indoor unit housing; 611. First housing air outlet; 612. Second housing air outlet; 613. Housing air return; 62. Indoor heat exchanger. Detailed implementation mode

[0128] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and illustration only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, multiple details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be shown in a simplified manner.

[0129] In the embodiments of the present disclosure, the terms "first", "second", etc. in the description and claims of the embodiments of the present disclosure and the above-mentioned accompanying drawings are used to distinguish similar objects and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement 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 inclusion.

[0130] In the embodiments of the present disclosure, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their embodiments and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation. And, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. 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.

[0131] In addition, the terms "arranged", "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 an internal communication between two devices, components, or parts. 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.

[0132] The term "and / or" describes the associated relationship of an object, indicating that three relationships can exist. For example, A and / or B means: A or B, or, the three relationships of A and B.

[0133] It should be noted that, without conflict, the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0134] 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 machines, and humidifiers, etc., to controllably achieve functions such as separately introducing outdoor fresh air, separately exhausting indoor dirty air, and / or simultaneously introducing outdoor fresh air and exhausting indoor dirty air, thereby playing roles such as improving indoor air quality and enhancing environmental comfort.

[0135] As Figure 1 and 1a shown, the fresh air module 1 mainly includes components such as a module housing 10, a fresh air pipe 20, and an air outlet switching part 30. The interior of the module housing 10 has a wind cavity that defines an air flow path and can serve 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 supply outlet and / or an indoor air return opening 113. The indoor air supply outlet is the air outlet for the fresh air module 1 to supply air to the indoor side, and the indoor air return opening 113 is the air outlet for air to flow back from the indoor side to the fresh air module 1; the outdoor air outlet 114 is the air outlet for the fresh air module 1 to exhaust air to the outdoor side or for the outdoor side to supply fresh air to the fresh air module 1. The fresh air pipe 20 extends from the indoor side to the outdoor side and serves as a through-wall passage for introducing outdoor fresh air and / or exhausting indoor dirty air. The fresh air pipe 20 is connected to the wind cavity of the module housing 10, thereby jointly defining an outdoor fresh air introduction path and / or an indoor dirty air exhaust path. The air outlet switching part 30 is arranged on the air outlet side of the module housing 10 and is used to define the air outlet flow direction of at least part of the air flowing through the module housing 10. The at least part of the air includes outdoor fresh air or indoor dirty air, and its air outlet flow direction includes flowing to the indoor side or the outdoor side, thereby realizing functions such as introducing outdoor fresh air and / or exhausting outdoor dirty air.

[0136] In some alternative embodiments, in combination with Figure 2 、 2a and as shown in 2b, the air cavity of the module housing 10 includes an air inlet cavity 11 and a fan cavity 12, and the air inlet cavity 11 is in communication with the fan cavity 12, so that air can flow between the air inlet cavity 11 and the fan cavity 12. Among them, the air inlet cavity 11 can be used to accommodate components such as a separation component and an air filter element 14, and the air inlet cavity 11 is in communication with 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 in communication with one or more of an indoor air outlet and an outdoor air outlet 114.

[0137] Optionally, the air inlet cavity 11 is upstream of the fan cavity 12 in the air path, that is, the fan cavity 12 is located on the air outlet side of the air inlet cavity 11, so that a flow direction of air flowing from the air inlet cavity 11 to the fan cavity 12 is defined within the module housing 10. Another option is that the air inlet cavity 11 is downstream of the fan cavity 12 in the air path, that is, the air inlet cavity 11 is located on the air outlet side of the fan cavity 12, so that a flow direction of air flowing from the fan cavity 12 to the air inlet cavity 11 is defined within the module housing 10. Hereinafter, the former structure form of "the air inlet cavity 11 is upstream of the fan cavity 12 in the air path" will be mainly used as an example for description.

[0138] In some embodiments, in combination with Figures 3a to 3e as shown, the air inlet cavity 11 includes a first sub-air inlet cavity 115 and a second sub-air inlet cavity 116, and the two are separated from each other. The first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 respectively form a relatively independent air path. The air flowing into the air inlet cavity 11 is shunted to the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116, and continues to be conveyed to the fan cavity 12 along their respective air paths. Optionally, a separation component is provided in the air inlet cavity 11, and the separation component is used to separate the air inlet cavity 11 into a first sub-air inlet cavity 115 and a second sub-air inlet cavity 116.

[0139] Optionally, the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 can respectively circulate air from the same air source. For example, the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 are both used to convey outdoor fresh air from the outdoor side, or are both used to convey indoor polluted air from the indoor side. Another option is that the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 can respectively circulate air from different air sources. For example, one of the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 is used to convey outdoor fresh air from the outdoor side, and the other is used to convey indoor polluted air from the indoor side. Here, the separation component can at least be used to separate the air paths when the two sub-air inlet cavities convey air from different air sources, and block or slow down the mixing of air with different cleanliness states.

[0140] Optionally, the overall outer contour of the air inlet cavity 11 has a flat cavity structure, which includes an outer cavity wall 1115, an air outlet cavity wall 1116, a first side wall 1111, a second side wall 1112, a third side wall 1113, and a fourth side wall 1114, as Figure 3a and 3b . Among them, the wall surfaces of the outer cavity wall 1115 and the air outlet cavity wall 1116 are parallel to each other and are spaced apart. The first side wall 1111, the second side wall 1112, the third side wall 1113, and the fourth side wall 1114 are respectively provided on the outer peripheral side of the spaced space between the outer cavity wall 1115 and the air outlet cavity wall 1116. The outer cavity wall 1115, the air outlet cavity wall 1116, the first side wall 1111, the second side wall 1112, the third side wall 1113, and the fourth side wall 1114 jointly enclose the aforementioned air inlet cavity 11. Here, the lateral two sides (long sides) of each side wall among 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 sides of the outer cavity wall 1115 and the air outlet cavity wall 1116, and the longitudinal two sides (short sides) are respectively connected to the short sides of the adjacent other side walls.

[0141] In the embodiment, the first side wall 1111 and the second side wall 1112 are oppositely arranged, and the third side wall 1113 and the fourth side wall 1114 are oppositely arranged. For example, in combination with Figure 2b and 3b shown, the first side wall 1111 is provided at the top position of the air inlet cavity 11 and is configured as the top surface of the air inlet cavity 11; the second side wall 1112 is provided at the bottom position of the air inlet cavity 11 and is configured as the bottom surface of the air inlet cavity 11; the third side wall 1113 is provided at the front side position of the air inlet cavity 11 and is configured as the front side surface of the air inlet cavity 11; the fourth side wall 1114 is provided at the rear side position of the air inlet cavity 11 and is configured as the back side surface of the air inlet cavity 11. In this example, the outer cavity wall 1115 serves as the left side surface of the air inlet cavity 11, and the air outlet cavity wall 1116 serves as the right side surface of the air inlet cavity 11.

[0142] Optionally, one or more of the first side wall 1111, the second side wall 1112, the third side wall 1113, and the fourth side wall 1114 are straight plate surfaces. For example, Figure 3a and 3b show that both the third side wall 1113 and the fourth side wall 1114 are in the form of straight plate surfaces. Another option is that one or more of the first side wall 1111, the second side wall 1112, the third side wall 1113, and the fourth side wall 1114 are non-straight plate surfaces. For example, Figure 2b and 3b show that the plate surfaces of the first side wall 1111 and the second side wall 1112 are in the form of a plate surface composed of a plurality of straight surface portions and / or arc surface portions spliced together.

[0143] In this embodiment, part of the side wall is designed in the form of a non-linear plate surface, which can achieve a closer fit between the air inlet cavity 11 and other components of the fresh air module 1, so as to reduce the number of air leakage gaps and lower the air path resistance. For example, the arc surface part of the first side wall 1111 is adapted to the volute curve of the blower cavity 12, making its connection with the corresponding position of the blower cavity 12 closer and the airtightness better.

[0144] In some alternative embodiments, the first side wall 1111, the second side wall 1112, the third side wall 1113, the fourth side wall 1114 and the outer cavity wall 1115 are of an integral structure, thereby reducing the existence of air leakage gaps and improving the sealing performance of the air inlet cavity 11.

[0145] In the embodiment, in combination with Figure 3c As shown, an air inlet of the air inlet cavity 112 is formed in the air outlet cavity wall 1116, and the air inlet cavity 11 is communicated with the blower cavity 12 through the air inlet of the air inlet cavity 112. In this embodiment, for the opening position and coverage range of the air inlet of the air inlet cavity 112, it 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 through the air inlet of the air inlet cavity 112 to the blower cavity 12.

[0146] Optionally, the air inlet of the air inlet cavity 112 is configured in a regular shape such as a circle, an ellipse, a square or a trapezoid, or other irregular shapes. Here, the specific shape and air outlet size of the air inlet of the air inlet cavity 112 can be set according to actual needs, and the present application does not limit this.

[0147] Another alternative is that an air outlet grille is provided at the air inlet of the air inlet cavity 112. The air outlet grille can not only intercept large-volume sundries (such as stones, paper balls, wool fluffs, etc.); at the same time, it can also achieve the effect of isolation and protection, so that when the user replaces the air filter element 14, the fingers will not accidentally extend into the blower cavity 12 and prevent being cut by the blades 1222 of the impeller 122.

[0148] Exemplarily, the air outlet grille includes one or more circumferential grille bars and one or more radial grille bars. Among them, the multiple circumferential grille bars are coaxially arranged and the radii gradually increase. The multiple circumferential grille bars are arranged at intervals along the radial direction from the inside to the outside on the same plane, and this plane is the plane where the air inlet of the air inlet cavity 112 is located. And, one end of each radial grille bar is connected to the central axis of the air inlet of the air inlet cavity 112, and the other end extends and is formed along the radial direction outward. The multiple radial grille bars are arranged at intervals in a radial pattern at the air inlet of the air inlet cavity 112 and intersect with the circumferential grille bars. In this way, the circumferential grille bars and the radial grille bars are arranged in a staggered manner to jointly achieve the function of interception and filtration.

[0149] In some alternative embodiments, in combination with Figure 3a and3b As shown, the separating member includes a separating plate 15, which is disposed inside the air inlet chamber 11 and extends from one side wall of the air inlet chamber 11 to the other opposite side wall. Optionally, the longitudinal direction of the plate body of the separating plate 15 extends from the first side wall 1111 to the second side wall 1112, that is, the longitudinal top end of the separating 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 transverse direction of the plate body of the separating plate 15 extends from the outer cavity wall 1115 to the air outlet cavity wall 1116. Thereby, the air inlet chamber 11 is separated into two air inlet partitions arranged in the front and rear spaces, that is, the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 in the foregoing text.

[0150] Exemplarily, in combination with Figure 3c and 3d As 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 surrounding the third side wall 1113, the front side surface of the separating plate 15, and partial wall surfaces of the outer cavity wall 1115, the air outlet cavity wall 1116, the first side wall 1111 and the second side wall 1112 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 surrounding the fourth side wall 1114, the back side surface of the separating plate 15, and partial wall surfaces of the outer cavity wall 1115, the air outlet cavity wall 1116, the first side wall 1111 and the second side wall 1112 close to the rear side.

[0151] In the embodiment, the plate body extends transversely to the air outlet cavity wall 1116, which also separates the air inlet of the air inlet chamber 11 into a first sub-air outlet and a second sub-air outlet. Among them, the first sub-air inlet chamber 115 is communicated with the first sub-air outlet, and the second sub-air inlet chamber 116 is communicated with the second sub-air outlet.

[0152] Optionally, from the perspective of the longitudinal section of the separating plate 15, the linear shape of the plate body of the separating plate 15 is configured as a straight line shape, a curved line shape, a broken line shape, etc., or a plate body form spliced by one or more straight line shapes and / or one or more curved line shapes in multiple segments. Here, the linear shape of the plate body of the separating plate 15 can be adjusted according to factors such as the cavity volume distribution and air resistance in the air inlet chamber 11. For example, when it is required that the cavity volume of the first sub-air inlet chamber 115 is larger than that of the second sub-air inlet chamber 116, the separating plate 15 can be configured as a curve or broken line linear form with the plate surface protruding towards the second sub-air inlet chamber 116 to increase the actually allocated space of the first sub-air inlet chamber 115. Or, when it is required that the cavity volumes of the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 are approximately equal, the separating plate 15 can be configured as a straight line shape and disposed at the midline position of the air inlet chamber 11 to achieve an equal distribution of the spaces of the two sub-air inlet chambers 11.

[0153] In one embodiment, the cavity volume of the first sub-air inlet chamber 115 is greater than or equal to the cavity volume of the second sub-air inlet chamber 116, so that in the two-way air exchange mode, the amount of outdoor fresh air delivered to the indoor room via the first sub-air inlet chamber 115 is greater than the amount of outdoor polluted air delivered to the outdoor side via the second sub-air inlet chamber 116, thereby achieving a positive pressure air supply effect.

[0154] 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.

[0155] Optionally, the air filter element 14 is disposed in one of the air inlet chamber 11 and the fan chamber 12. Figure 4 , 4a As 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.

[0156] 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.

[0157] 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.

[0158] In the foregoing embodiments, the transverse direction of the plate body of the partition plate 15 extends from the outer cavity wall 1115 to the air outlet cavity wall 1116. Therefore, the air filter element 14 inserted into the air inlet cavity 11 is also on the transverse covering path of its plate body. To avoid structural interference between the partition plate 15 and the air filter element 14, in this embodiment, a slot 118 for the air filter element 14 to be pulled out is also provided on the partition plate 15. By using this slot 118, the partition plate 15 can be avoided from interfering with the air filter element 14, and the two can be arranged in the air inlet cavity 11 without affecting each other, as Figure 4c shown.

[0159] Optionally, the vertical height of the slot 118 is greater than or equal to the vertical length of the air filter element 14, and / or, the axial width of the slot 118 is greater than or equal to the transverse length of the air filter element 14. This can ensure that the slot 118 will not block the inflow / outflow of air.

[0160] In some alternative embodiments, the slot 118 is recessed and formed axially along the air inlet cavity 11 from a side surface of the partition plate 15 corresponding to the air outlet cavity wall 1116, as Figure 4c shown with a notch in an approximate U shape. In the embodiment, the groove shape of the slot 118 is adapted to the cross-sectional shape of the air filter element 14 to reduce the air leakage gap formed between the edge of the slot 118 and the air filter element 14. Exemplarily, the cross-sectional shape of the air filter element 14 is rectangular, and correspondingly, the groove shape of the slot 118 is also constructed in the form of a rectangular groove.

[0161] 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 grooving 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 does not have a space partitioning effect, limiting the groove depth of the slot 118 can also reduce the adverse effect of the air filter element 14 on the space partitioning effect of the air inlet cavity 11. Exemplarily, if 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 satisfied.

[0162] In some embodiments, a partition rib 16 is provided on the air outlet cavity wall 1116 of the air inlet cavity 11. The partition rib 16 is convexly formed from the wall surface of the air outlet cavity wall 1116 towards the outer cavity wall 1115 side, and it can cooperate with the partition plate 15 to jointly enclose and form the slot 118, as Figure 4d shown.

[0163] Combined with Figure 4c and 4d, the slot 118 formed in the partition plate 15 correspondingly wraps the lateral side and the longitudinal two sides of the air filter element 14, and the partition rib 16 correspondingly wraps the other lateral side of the air filter element 14. In this way, the partition rib 16 can substantially enhance the tightness of the fit between the air filter element 14 and the side of the air outlet cavity wall 1116, reduce the air leakage gap, and further improve the space partitioning effect on the air inlet cavity 11 body.

[0164] In the embodiment, the partition rib 16 is consistent with the linear shape of the partition plate 15 and coincides in position in the axial direction. In this way, no additional protrusion will be formed in the air flow path of this part of "partition plate 15 - partition rib 16", the flow path is smooth, and the air resistance effect on the air is avoided. Exemplarily, if the extending linear shape of the partition plate 15 is a straight line shape, then the partition rib 16 is also adaptively constructed in the form of a straight rib; or, if the extending linear shape of the partition plate 15 is an arc shape, then the partition rib 16 is adaptively constructed in the form of an arc rib.

[0165] In some other alternative embodiments, the slot 118 is a channel structure formed by hollowing out along the thickness direction of the partition plate 15. Here, the slot 118 is formed in the middle of the partition plate 15 or in the part close to the air outlet cavity wall 1116, and it is formed through the partition plate 15 along the thickness direction.

[0166] 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 on the side close to the first side wall 1111, the second slot edge is located on the side close to the second side wall 1112, the third slot edge is located on the side close to the outer cavity wall 1115, and the fourth slot edge is located on the side close to the air outlet cavity wall 1116. The four slot edges jointly enclose the slot 118 for the air filter element 14 to be inserted. Compared with the form in the previous embodiment where the partition plate 15 and the partition rib 16 jointly enclose to form the slot 118, in the embodiment of the present disclosure, there is no need to provide the partition rib 16 on the air outlet cavity wall 1116, which simplifies the structure of the air inlet cavity 11.

[0167] In some embodiments, an elastic seal is provided on the inner peripheral edge of the slot 118. The elastic seal can be used to block the assembly gap between the slot 118 and the air filter element 14 to reduce the air leakage amount of the assembly gap. Optionally, the elastic seal is provided on at least one inner peripheral edge of the slot 118. For example, for Figure 4c the shown form of the slot 118, the elastic seal can be provided on any slot edge of the U-shaped notch, and / or, provided on the edge of the partition rib 16 corresponding to the air filter element 14.

[0168] Optionally, the elastic seal can be selected from types such as rubber strips and wool strips. And, the elastic seal can be fixedly connected to the inner peripheral edge of the slot 118 by means of gluing, snap connection, etc.

[0169] In still other alternative embodiments, in order to enable the air filter element 14 to move into / out of the air inlet cavity 11 more smoothly, the present application provides a slideway assembly in the air inlet cavity 11 for defining the pulling track of the air filter element 14, and this slideway assembly can be used to define the moving path of the air filter element 14 relative to the air inlet cavity 11.

[0170] Optionally, the slideway 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 the pulling space of the air filter element 14. Among them, in combination Figure 3c and 4d As shown, the first track 171 is provided on the air outlet cavity wall 1116 and extends and is formed along the pulling direction. The first track 171 is located above the air inlet of the air inlet cavity 112, and it is used for limiting the position above the air filter element 14. The second track 172 is provided on the air outlet cavity wall 1116 and extends and is formed parallel to the first track 171. The second track 172 is located below the air inlet of the air inlet cavity 112, and it is used for limiting the position below the air filter element 14. The first track 171 and the second track 172 are arranged in parallel. By 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.

[0171] Exemplarily, in combination Figure 4d As shown, the first track 171 is a first guide strip protruding from the air outlet cavity wall 1116 towards the outer cavity wall 1115. The first guide strip extends longitudinally from the third side wall 1113 to the fourth side wall 1114, that is, from the front side of the air inlet cavity 11 to the back side position. Similarly, the second track 172 is also a second guide strip protruding from the air outlet cavity wall 1116 towards the outer cavity wall 1115, and the second guide strip also extends 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 on 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 misalignment of the air filter element 14 during movement.

[0172] In the foregoing multiple embodiments, optionally, the types of the air filter element 14 include but are not limited to primary filters, high-efficiency filters, activated carbon filters, etc. Those skilled in the art can select a suitable filter element type according to the actual purification requirements, and the present application does not limit this.

[0173] In still other alternative embodiments, in order to further improve the space partitioning effect on the air inlet cavity 11, a filter element partition strip 141 is provided inside the air filter element 14, and the filter element partition strip 141 divides the filter element into two filter element parts respectively corresponding to two air inlet partitions (sub-air inlet cavities 11). Here, the filter element partition strip 141 can play a role in blocking the flow of air between the two filter element parts, such asFigure 4a as shown

[0174] Here, the overall outer contour of the filter element partition strip 141 is in the form of a flat plate strip. Horizontally, it extends from one side of the air filter element 14 close to the partition plate 15 to the side close to the partition rib 16, and vertically, it extends from the top surface of the air filter element 14 to the bottom surface position.

[0175] Combined with Figure 4a as shown, the filter element partition strip 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 one side corresponding to the first sub-inlet air cavity 115 and can be used to filter and purify the air flowing through the first sub-inlet air cavity 115; the second filter element part 143 is located on one side corresponding to the second sub-inlet air cavity 116 and can be used to filter and purify the air flowing through the second sub-inlet air cavity 116. Due to the partitioning effect of the filter element partition strip 141, the air flowing through the first filter element part 142 will not flow to the second filter element part 143. Similarly, the air flowing through the second filter element part 143 will not flow to the first filter element part 142, thus avoiding the mixing of the air in the two sub-inlet air cavities 11 in the air filter element 14.

[0176] Optionally, the filter element partition strip 141 is consistent with the linear shape of the partition plate 15 and coincides in the axial direction. 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 an additional protrusion, the flow path is smooth, and the air flow resistance is effectively reduced. Exemplarily, if the extending linear shape of the partition plate 15 is a straight line, then the filter element partition strip 141 is also constructed in the form of a straight plate strip; or, if the extending linear shape of the partition plate 15 is an arc, then the filter element partition strip 141 is also constructed in the form of an arc plate strip. Here, the thicknesses 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 air flow path plane.

[0177] In still some other alternative embodiments, combined with Figures 5 to 5e as shown, the blower cavity 12 includes a blower volute 121 and an impeller 122. The impeller 122 is rotatably arranged inside the blower volute 121 and is used to rotate to generate a driving wind force for driving the air to flow through the module housing 10. In this embodiment, the impeller 122 can at least drive the air to flow from the inlet air cavity 11 to the blower cavity 12.

[0178] In the embodiment, the blower volute 121 is constructed as a detachable split structure, such as Figure 5cAs shown, it includes a first volute part 1211 and a second volute part 1212. The detachable design can facilitate the installation / removal of the impeller 122 into / from the fan volute 121, facilitating the assembly and replacement / maintenance of the fan volute 121. Here, the first volute part 1211 is located on the side close to the air inlet chamber 11, and the second volute part 1212 is located on the side of the air inlet chamber 11. The two jointly form the fan volute 121 by fitting together. Optionally, the first volute part 1211 and the second volute part 1212 can be fixed by means such as snap connection, screw connection, riveting, etc., which have the advantages of firm connection and quick disassembly and assembly.

[0179] The fan volute 121 has a volute air inlet 123, which is used to communicate with the air outlet 112 of the air inlet chamber 11, so that air enters the fan volute 121 in sequence through the air outlet 112 of the air inlet chamber and the volute air inlet 123. In this embodiment, the volute air inlet 123 is opened on the first volute part 1211, and the shape and size of the volute air inlet 123 are adapted to the air outlet 112 of the air inlet chamber. Exemplarily, the shape of the outlet of the air inlet chamber 11 is a circular air outlet, and correspondingly, the volute air inlet 123 is also configured in the form of a circular air outlet.

[0180] Optionally, the first volute part 1211 and the air outlet chamber wall 1116 are of an integral structure, that is, the first volute part 1211 and the air outlet chamber wall 1116 are respectively on two sides of the same housing. The first volute part 1211 is on the side corresponding to the impeller 122, and the air outlet chamber wall 1116 is on the side corresponding to the air filter element 14. Moreover, the air outlet 112 of the air inlet chamber of the air outlet chamber wall 1116 and the volute air inlet 123 of the first volute part 1211 are also integrated into the same air outlet. In this way, the number of components of the module housing 10 can be reduced, and the overall structure can be simplified.

[0181] In some embodiments, as shown in combination Figure 6 As shown, the impeller 122 includes a hub 1221 and a plurality of blades 1222. The hub 1221 is configured as an annular structure, and its internal space serves as the air inlet passage 1223 of the impeller 122, and the air inlet passage 1223 is formed by extending along the axial direction of the impeller 122. The number of hubs 1221 is two, and they are arranged at intervals coaxially. The space between the two hubs 1221 serves as the space for accommodating a plurality of blades 1222. Here, each blade 1222 is configured as a strip-shaped sheet structure, with its first end fixed to one of the hubs 1221 and the other end fixedly connected to the other hub 1221. From the perspective of 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 air enters the air inlet passage axially from the impeller 122, it is driven by the blades 1222 to diffuse radially outward and enter the housing space of the fan volute 121.

[0182] In an embodiment, a plurality of blades 1222 are uniformly arranged along the outer peripheral line and jointly enclose an air inlet passage 1223.

[0183] 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 chamber 11 to the blower chamber 12, for the first rotation direction, the air flow is in the clockwise direction, and for the second rotation direction, the air flow is in the counterclockwise direction.

[0184] In the foregoing optional embodiments, 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 blower chamber 12.

[0185] In some optional embodiments, the module housing 10 is provided with a first indoor air outlet 51 and / or a second indoor air outlet 52. The first indoor air outlet 51 and the second indoor air outlet 52 can be used to send air in different directions respectively to achieve an air supply effect with multiple angles and a large range.

[0186] Optionally, the first indoor air outlet 51 is used to send air in one of the directions of the front side, rear side, top side, bottom side, left side or right side of the fresh air module 1, and the second indoor air outlet 52 is used to send air in another direction of the front side, rear side, top side, bottom side, left side or right side of the fresh air module 1. In Figure 5 and 5a In the illustrated embodiment, the first indoor air outlet 51 is used to send air in the front upper direction, and the second indoor air outlet 52 is used to send air in the front lower direction.

[0187] 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 on the air outlet side of the air inlet chamber 11 (blower chamber 12), and is used to construct the first indoor air outlet 51 as an air outlet path. The air outlet air flow of the air inlet chamber 11 (blower chamber 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 on the air outlet side of the air inlet chamber 11 (blower chamber 12), and is used to construct the second indoor air outlet 52 as an air outlet path. The air outlet air flow of the air inlet chamber 11 (blower chamber 12) can be transported to the external environment through the second air outlet duct.

[0188] In the above embodiments, by changing the extension direction of the first air outlet duct 13 (and the second air outlet duct), or the orientation of the air outlet end of the duct, the adjustment of the actual air supply direction can be achieved. Exemplarily, in the foregoing embodiment, the first indoor air outlet 51 is used to send air in the front upper direction, then the corresponding first air outlet duct 13 can extend in the front upper direction and its air outlet end faces the front upper direction.

[0189] Here, the blower chamber 12 is provided on the air outlet side of the air inlet chamber 11. The first indoor air outlet 51 and the second indoor air outlet 52 communicate with the blower chamber 12 through the blower chamber 12 respectively. In the embodiment, the first indoor air outlet 51 and the second indoor air outlet 52 are respectively communicated with the outer peripheral shell wall of the blower volute 121, wherein the first indoor air outlet is communicated with the top position of the outer peripheral shell wall, and the second indoor air outlet 52 is communicated with the bottom position of the outer peripheral shell wall. In the blower chamber 12, the impeller 122 rotates downward. The air located upstream of the rotation direction of the first indoor air outlet 51 will preferentially and centrally flow to the first indoor air outlet 51, as shown in Figure 7 the solid arrow air flow shown in; and the air located upstream of the rotation direction of the second indoor air outlet 52 will preferentially and centrally flow to the second indoor air outlet 52, as shown in Figure 7 the dotted arrow air flow shown in.

[0190] In some embodiments, in combination with Figure 5b and 5c shown, a first volute air outlet 124 and a second volute air outlet 125 are provided on the blower volute 121. The first volute air outlet 124 is provided at the top position of the outer peripheral shell wall of the blower volute 121, and is used to connect the blower volute 121 and the first indoor air outlet 51, so that at least part of the air flow in the blower volute 121 is conveyed to the first indoor air outlet 51 through the first volute air outlet 124. The second volute air outlet 125 is provided at the bottom position of the outer peripheral shell wall of the blower volute 121, and is used to connect the blower volute 121 and the second indoor air outlet 52, so that at least part of the air flow in the blower volute 121 is conveyed to the second indoor air outlet 52 through the second volute air outlet 125.

[0191] In Figure 7 the first rotation downward of the impeller 122 shown, the first indoor air outlet 51 is arranged corresponding to the first sub-air inlet chamber 115 and is located in the middle and lower reaches of the rotation flow direction of the impeller 122, that is, the air flow flowing from the first sub-air inlet chamber 115 into the blower volute 121 is located in the middle and upper reaches of the first indoor air outlet 51. In this way, the air flow flowing through the first sub-air inlet chamber 115 will flow towards the first indoor air outlet 51, so that most of this part of the air flow is sent out through the first indoor air outlet 51. Similarly, the second indoor air outlet 52 is arranged corresponding to the second sub-air inlet chamber 116 and is located in the middle and lower reaches of the rotation flow direction of the impeller 122, that is, the air flow flowing from the second sub-air inlet chamber 116 into the blower volute 121 is located in the middle and upper reaches of the second indoor air outlet 52. In this way, the air flow flowing through the second sub-air inlet chamber 116 will flow towards the second indoor air outlet 52, so that most of this part of the air flow is sent out through the second indoor air outlet 52.

[0192] 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 at intervals relative to each other, and the interval space therebetween serves as an air flow channel, as Figure 5d shown. 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 section are arranged at intervals relative to each other, and the interval space therebetween serves as an air flow channel, as Figure 5e shown. Optionally, the range where the first sub-inlet cavity 115 conveys air flow to the fan cavity 12 is mainly the covered part of the second volute tongue section 1252 to the first volute tongue section 1242 in the first rotation direction, as Figure 8 shown in the A range area shown in. The range where the second sub-inlet cavity 116 conveys air flow to the fan cavity 12 is mainly the covered part of the first volute tongue section 1242 to the second volute tongue section 1252 in the first rotation direction, as Figure 8 shown in the B range area shown in.

[0193] To achieve the division of the two air delivery coverage areas in the foregoing text, correspondingly, on the axial projection of the partition plate 15 in the direction of the fan volute 121, the longitudinal first end (longitudinal top end) of the partition plate 15 extends to the shell wall close to the first volute tongue section 1242, and the longitudinal second end (longitudinal bottom end) extends to the shell wall close to the second volute tongue section 1252, as Figure 8 shown.

[0194] In this embodiment, the plate body of the partition plate 15 extends in a curve longitudinally, and the curve direction corresponds to the air outlet directions of the first volute air outlet 124 and the second volute air outlet 125, so as to reduce the wind resistance during the process of air flowing through the plate surface of the partition plate 15 and reduce the wind pressure loss.

[0195] Combined with Figure 3e shown, the partition plate 15 includes a first arc plate section 151, a second arc plate section 152, and an intermediate arc plate section 153. Among them, on the axial projection of the partition plate 15 in the direction of the fan volute 121, the upper end of the first arc plate section 151 extends to the shell wall close to the first volute tongue section 1242, and the lower end is formed by extending along the curve of the first volute tongue section 1242 of the fan volute 121 towards the axis of the fan volute 121. And, similarly on the axial projection of the partition plate 15 in the direction of the fan volute 121, the lower end of the second arc plate section 152 extends to the shell wall close to the second volute tongue section 1252, and the upper end is formed by extending along the curve of the second volute tongue section 1252 of the fan volute 121 towards the axis of the fan volute 121. The two ends of the intermediate arc plate section 153 are respectively connected to the extending ends of the first arc plate section 151 and the second arc plate section towards the axis, that is, respectively connected to the lower end of the first arc plate section 151 and the upper end of the second arc plate section 152.

[0196] In this embodiment, in combination with Figure 8 As shown, the extending direction of the first arc plate segment 151 is adapted to the first volute tongue segment 1242, and the extending direction of the second arc plate segment 152 is adapted to the second volute tongue segment 1252, so that the airflow is smoother and more unobstructed during the process of flowing through the air inlet chamber 11, the blower chamber 12 and finally being split to the first volute outlet 124 and the second volute outlet 125, reducing the resistance effect of the chamber wall on the airflow.

[0197] Optionally, the extending 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 with the curve of the first volute tongue segment 1242. Similarly, the extending 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 with the curve of the second volute tongue segment 1252. In addition, the curve trajectories of the first arc plate segment 151 and the second arc plate segment 152 have a tendency to bend and extend towards the axis of the blower volute 121, rather than necessarily pointing to the axis.

[0198] Optionally, the first arc plate segment 151, the second arc plate segment 152 and the middle arc plate segment 153 adopt an integral structure, so that there is no air leakage gap between the plate segments of the partition plate 15, improving the airtightness of the air inlet chamber 11.

[0199] It should be understood that in this embodiment, the extending direction of the partition plate 15 and the setting positions of the longitudinal two end points are mainly set according to factors such as the opening positions of the two indoor air outlets and the rotation direction of the impeller 122. For example, in the embodiment, the two indoor air outlets are respectively located on the upper and lower sides of the blower chamber 12, so the partition plate 15 as a whole also extends vertically. When the arrangement positions of the indoor air outlets change, such as changing to front and rear side air outlets, the extending direction of the partition plate 15 also needs to be adjusted adaptively. Therefore, other deformation adjustment schemes for the opening positions of the indoor air outlets and the form of the partition plate 15 by those skilled in the art based on the technical concept disclosed in this application and in combination with the actual air supply requirements should also be covered within the protection scope of this application.

[0200] In some other embodiments not shown in the drawings, the partition member includes a first partition portion and / or a second partition portion.

[0201] Among them, the first partition portion is arranged in the air inlet passage 1223, and it is used to divide the air inlet passage 1223 into a first air inlet region and a second air inlet region. The airflow in the first air inlet region tends to flow towards the first volute outlet 124, and the airflow in the second air inlet region tends to flow towards the second volute outlet 125.

[0202] In this embodiment, a partition member is provided in the air inlet passage 1223 of the impeller 122 in the fan cavity 12. This partition member can partition the space of the air inlet passage 1223, dividing the air inlet passage 1223 into two air inlet regions, effectively reducing the mixing of airflows between the two air inlet regions, enabling the air in each part of the two air inlet regions to be more inclined to flow out from the corresponding air outlet, and enhancing the air distribution effect of the fresh air module 1.

[0203] Optionally, the first partition portion includes a first partition plate, whose plate body longitudinally extends from the blade 1222 on one side of the axis of the impeller 122 to the blade 1222 on the other side of the axis, and the longitudinal ends of the first partition plate are spaced from the inner edges of the corresponding blades 1222. In this way, not only can the air leakage gap between the longitudinal ends of the first partition plate and the inner edges of the blades 1222 be reduced, and the mixing of airflows between the first air inlet region and the second air inlet region be reduced, but also it can prevent the structural interference between the first partition plate and the impeller 122, resulting in the situation where the first partition plate and the blades 1222 collide and deform and damage each other.

[0204] In the embodiment, the air inlet passage 1223 is formed by extending axially along the impeller 122. Therefore, the air entering the air inlet passage 1223 is also vortex-divided by the blades 1222 to the air outlet side in the entire axial direction. Correspondingly, the plate body of the first partition plate transversely extends axially along the air inlet side of the air inlet passage 1223 to be able to cover the axially extending range of the air inlet passage 1223, improving the partitioning effect on the internal space of the air inlet passage 1223.

[0205] Optionally, the first partition plate is a straight plate or a non-straight plate. Further, the non-straight plate includes shapes such as a curved shape and a folded line shape, or a plate body form spliced by one or more straight lines and / or one or more curved lines in multiple segments.

[0206] In some embodiments, the second partition portion is provided in the air inlet cavity 11 and can divide the air inlet cavity 11 into a first sub-air inlet cavity 115 and a second sub-air inlet cavity 116. And, the first sub-air inlet cavity 115 corresponds to the first air inlet region, so that the air flow in the first sub-air inlet cavity 115 flows to the first air inlet region, and the second sub-air inlet cavity 116 corresponds to the second air inlet region, so that the air flow in the second sub-air inlet cavity 116 flows to the second air inlet region. In this way, through the cooperation of the second partition portion and the first partition portion, the fresh air flow and the dirty air flow are kept in a state where the air flow paths are partitioned during the process of flowing through the air inlet cavity and the fan cavity, improving the air distribution effect.

[0207] In this embodiment, the second partition portion includes a second partition plate, whose plate body longitudinally extends from one side wall of the air inlet cavity 11 to the other side wall. Optionally, the second partition plate is the partition plate in the embodiment shown Figures 3a to 3e above.

[0208] Another optional feature is that the second partition plate has the same extending trajectory as the plate body of the first partition plate, so as to ensure the consistency and smoothness of the partition surface formed by the second partition plate and the first partition plate from the air inlet chamber 11 to the fan chamber 12. Here, the extending lengths of the plate bodies of the second partition plate and the first partition plate may be the same or different. For example, when the cavity space of the air inlet chamber 11 is larger than the diameter of the air inlet passage 1223, the extending length of the plate body of the first partition plate is smaller than that of the second partition plate. In this case, the first partition plate is consistent with the extending trajectory of a part of the plate body of the second partition plate.

[0209]

[0209] In some embodiments, the second partition plate and the first partition plate are of an integrally formed structure, which can effectively ensure the stability of the connection between the two partition plates and prevent the formation of additional air leakage gaps therebetween.

[0210] In some embodiments, the fresh air module further includes an air outlet group, which includes a first air outlet and a second air outlet. Here, the air outlet group is provided in the fan chamber 12 of the fresh air module, and the first air outlet corresponds to the first air inlet area, and the second air outlet corresponds to the second air inlet area. Under the partitioning action of the second partition plate and the downward rotation of the fan chamber, the air flow in the first air inlet area tends to flow towards the first air outlet, and the air flow in the second air inlet area tends to flow towards the second air outlet. Optionally, the first air outlet is the first volute air outlet 124 in the previous embodiment, and the second air outlet is the second volute air outlet 125.

[0211]

[0210] In some alternative embodiments, at least part of the body of the impeller driver 126 is located in the air inlet passage 1223 of the impeller 122. Correspondingly, the first partition plate is formed with an avoidance groove for avoiding the impeller driver 126, so as to prevent the first partition plate from interfering with the impeller driver 126 during rotation.

[0212] Here, the avoidance groove is spaced from the impeller driver 126, and on the premise of avoiding contact, the gap between the edge of the groove and the impeller driver 126 is minimized as much as possible to improve the airtightness effect and reduce the mixing of the air flows in the two air inlet areas in the air inlet passage 1223 through this gap.

[0213]

[0211] In some alternative embodiments, as shown in Figure 9 shown, the module housing 10 has an outdoor air outlet 114 communicating the air inlet chamber 11 with the outdoor side. Specifically, the outdoor air outlet 114 communicates with at least one of the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116, so that 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.

[0214] Here, the number of sub-inlet chambers 11 connected to the outdoor air outlet 114 is dynamically adjusted according to the operating state of the fresh air module 1. For example, in the all-fresh air mode, the outdoor air outlet 114 is connected to the first sub-inlet chamber 115 and the second sub- 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-inlet chamber 115 and the second sub-inlet chamber 116, and the other is not connected.

[0215] Optionally, the outdoor air outlet 114 is opened on the chamber wall of the inlet chamber 11 adjacent to the first sub-inlet chamber 115 and the second sub-inlet chamber 116 for switching and adjustment of various connection forms. For example, the outdoor air outlet 114 can be opened on the outer chamber wall 1115, the first side wall 1111 or the second side wall 1112. Here, the common point of the outer chamber 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-inlet chamber 115, and at least another part of the wall surface is located on the side adjacent to the second sub-inlet chamber 116. Exemplarily, in combination with Figure 9 As shown, the outdoor air inlet is opened on the second side wall 1112 of the inlet chamber 11 and is located on the side close to the first sub-inlet chamber 115. In this embodiment, when the fresh air mode is in the two-way air exchange mode, the outdoor air outlet 114 is connected to the first sub-inlet chamber 115 and is not connected to the second sub-inlet chamber 116.

[0216] Optionally, the shape of the outdoor air outlet 114 is configured in forms such as circular, rectangular, square, etc., and the present application does not limit this.

[0217] In still some other alternative embodiments, in combination with Figure 10 As shown, the module housing 10 has an indoor air return outlet 113 that communicates the inlet chamber 11 with the indoor side. Specifically, the indoor air return outlet 113 communicates with at least one of the first sub-inlet chamber 115 and the second sub-inlet chamber 116, so that the indoor polluted air in the indoor environment can be introduced into at least one of the first sub-inlet chamber 115 and the second sub-inlet chamber 116.

[0218] Here, the number of sub-inlet chambers 11 connected to the indoor air return outlet 113 is dynamically adjusted according to the operating state of the fresh air module 1. For example, in the two-way air exchange mode, the indoor air return outlet 113 is only connected to one of the first sub-inlet chamber 115 and the second sub-inlet chamber 116, and the other is not connected; in the full air return mode, the indoor air return outlet 113 is connected to the first sub-inlet chamber 115 and the second sub-inlet chamber 116 at the same time.

[0219] Optionally, the indoor air return opening 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 for switching and adjusting various connection forms. For example, the indoor air return opening 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 with Figure 11 As shown, the indoor air return opening 113 is provided on the second side wall 1112 of the air inlet cavity 11 and is located on the side close to the second sub-air inlet cavity 116. In this embodiment, in the fresh air mode under the two-way air exchange mode, the indoor air return opening 113 is connected to the second sub-air inlet cavity 116 and is not connected to the first sub-air inlet cavity 115.

[0220] Optionally, the shape of the indoor air return opening 113 is configured in forms such as circular, rectangular, square, etc., and the present application does not limit this.

[0221] In some alternative embodiments, the fresh air module 1 further includes an air return switch part, which is provided at the indoor air return opening 113. The air return switch part is used to controllably close or open the indoor air return opening 113. Optionally, the air return switch part is configured to at least close the indoor air return opening 113 in the all-fresh air mode, so that the indoor dirty air on the indoor side will not be introduced into the air inlet cavity 11 in the all-fresh air mode; and open the indoor air return opening 113 in the two-way air exchange mode, so that the indoor dirty air on the indoor side flows into the air inlet cavity 11 through the indoor air return opening 113 under the negative pressure of the impeller 122.

[0222] Here, the air return switch part includes an air return baffle and a first driver. The air return baffle is drivingly connected to the first driver, so that the air return baffle is driven to close or open the indoor air return opening 113.

[0223] Optionally, the return air baffle is slidably disposed at the indoor return air opening 113 relative to the second side wall 1112. A first rack is provided on one side edge of the return air baffle, and the first rack is formed by longitudinally extending along the side edge. The first driver includes a first driving motor and a first gear. The first gear is sleeved on the driving shaft of the first driving motor and is engaged with the first rack. In this way, by controlling the bidirectional rotation of the first driving motor, the return air baffle is driven by the cooperation of the first gear and the first rack to move towards the direction close to the indoor return air opening 113 or move away from the indoor return air opening 113. When moving towards the direction close to the indoor return air opening 113, the return air baffle can cover the indoor return air opening 113 to close the indoor return air opening 113; and when moving away from the indoor return air opening 113, the return air baffle disengages from the position covering the indoor return air opening 113 to open the indoor return air opening 113.

[0224] Another option is that the return air baffle is pivotally connected to one side edge of the indoor return air opening 113. The first driver includes a first driving motor and a pivot shaft, and the return air baffle is disposed on the pivot shaft. In this way, by controlling the first driving motor to drive the return air baffle to perform a flipping action, the return air baffle can be made to close or open the indoor return air opening 113.

[0225] In an alternative embodiment, the outdoor air opening 114 and the indoor return air opening 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. Among them, the outdoor air opening 114 is located on one side of the partition plate 15 corresponding to the first sub-air inlet chamber 115, and the indoor return air opening 113 is located on one side of the partition plate 15 corresponding to the second sub-air inlet chamber 116, as Figure 11 shown.

[0226] In some other alternative embodiments, as shown in Figure 12 the fresh air duct 20 includes a duct body 21 and a pipe joint 22. The duct body 21 extends from the indoor side to the outdoor side, and the pipe joint 22 is disposed at the indoor side end of the duct body 21, and is used to connect the duct body 21 and the module housing 10. In this embodiment, the pipe joint 22 is used to connect the duct body 21 and the outdoor air opening 114 and the air outlet switching part 30.

[0227] Here, the duct body 21 has a long cylindrical tube body, and the internal space of the tube body is configured as an air flow channel. This air flow channel can be used as an inflow channel for outdoor fresh air and / or an exhaust channel for indoor dirty air, and air can flow from one end of the duct body 21 to the other end.

[0228] In an embodiment, the fresh air duct 20 has a first duct passage 231 and a second duct passage 232 that are used to connect the outdoor air outlet 114 and the outdoor side and are separated from each other. Outdoor fresh air can be introduced from the outdoor side to the outdoor air outlet 114 of the module housing 10 through the first duct passage 231 and the second duct passage 232 respectively.

[0229] Exemplarily, as shown in Figure 12a 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 passages, including a first duct body passage 211 and a second duct body passage 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 from one end of the pipe joint 22 connected to the duct body 21 to the end connected to the outdoor air outlet 114, and divides the pipe joint 22 into two relatively independent joint passages, including a first joint passage 221 and a second joint passage 222. At the same time, the position of the joint partition 223 corresponds to that of the duct partition 213, so that the first duct body passage 211 and the first joint passage 221 together form the first duct passage 231, and the second duct body passage 212 and the second joint passage 222 together form the second duct passage 232. Optionally, correspondingly, a separator is also provided at the outdoor air outlet 114 of the module housing 10, and the separator can be used to divide the outdoor air outlet 114 into independent air inlet paths corresponding to the two joint passages of the pipe joint 22.

[0230] Optionally, the duct partition 213 divides the duct body 21 into two duct body passages with the same cross-sectional area. For example, if the cross-section of the duct body 21 is circular, then in the cross-sectional view, the duct partition 213 is formed by extending along a radial line of the duct body 21, as shown in Figure 12b In this way, in this embodiment, the two duct body passages can achieve the air supply effect of equal air volume transportation. For example, in the two-way air exchange mode, the two duct body passages respectively transport outdoor fresh air and indoor dirty air, and the intake air volume of the outdoor fresh air is basically the same as the exhaust air volume of the indoor dirty air, ensuring the stability of the indoor air pressure during the operation of the fresh air module 1.

[0231] Another option is that the duct partition 213 divides the duct body 21 into two duct body passages with different cross-sectional areas. For example, if the cross-section of the duct body 21 is circular, then in the cross-sectional view, the duct partition 213 is formed by extending along a straight line at an angle to the radial line of the duct body 21, as shown in Figure 12cAs shown. Alternatively, the air duct partition 213 is a non-linear partition, such as an arc-shaped plate, a broken-line-shaped plate, etc., which can also achieve unequal partitioning of the space of the air duct body 21. In this embodiment, the two air duct body channels 21 can achieve the air supply effect of unequal air volume delivery. For example, in the two-way air change mode, the cross-sectional area of the first air duct body channel 211 is larger than that 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 greater than the indoor polluted air discharge volume corresponding to the second air duct body channel 212, thus achieving the positive pressure air supply effect on the indoor side environment.

[0232] In some other embodiments, the indoor end of the first air duct channel 231 is defined as the first fresh air outlet duct opening 2311, and the indoor end of the second air duct channel 232 is divided into the second fresh air outlet duct opening 2321 and the branch duct opening 2322.

[0233] Among them, the first fresh air outlet duct opening 2311 and the second fresh air outlet duct opening 2321 are connected to the outdoor air outlet 114 of the module housing 10, so that the outdoor fresh air of the first fresh air outlet duct opening 2311 and the second air duct channel 232 flows to the outdoor air outlet 114 through the second fresh air outlet duct opening 2321.

[0234] In addition, the branch duct opening 2322 is connected between the indoor air outlet and the air outlet side of the air inlet chamber 11, and it can be used to direct at least part of the air output from the air outlet side of the air inlet chamber 11 to the second air duct channel 232 through the branch duct opening 2322, and then discharge this part of the air to the outdoor side. Combining the previous embodiments, the fan chamber 12 is located on the air outlet side of the air inlet chamber 11, then the branch duct opening 2322 is connected between the volute air outlet of the fan chamber 12 and the indoor air outlet of the module housing 10. In this way, the air output from the volute air outlet can flow to one or both of the indoor air outlet and the branch duct opening 2322. As Figure 15 shown, the branch duct opening 2322 is arranged adjacent to the lower part of the module housing 10. Therefore, to save the length of the pipeline consumables, the branch duct 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.

[0235] In some other alternative embodiments, as Figure 13 、 13a and 13b show, the fresh air duct 20 further includes an air volume adjustment assembly 24, and the air volume adjustment assembly 24 can be used for the intake air volume of outdoor fresh air and / or the exhaust air volume of indoor polluted air. Optionally, as shown in the figure, the air volume adjustment assembly 24 includes an air duct partition 213 and a driving device.

[0236] Different from the fixed assembly structure form of the duct partition 213 and the duct body 21 in the previous embodiment, in this embodiment, the duct partition 213 is movably arranged inside the pipe body of the duct body 21, and the duct partition 213 is also formed by extending along the length direction of the pipe body, so that the air flow channel can also be divided into the first duct body channel 211 and the second duct body channel 212 shown in the previous embodiment. The two duct body channels 21 can each be configured as a separate air flow path for conveying outdoor fresh air or indoor polluted air.

[0237] In the embodiment, the driving device is drivingly connected to the duct partition 213, and is configured to controllably drive the duct partition 213 to rotate relative to the duct body 21 to adjust the channel space ratio of the first duct body channel 211 and the second duct body channel 212. After the channel space ratio changes, the air volume corresponding to each duct body channel 21 will also change accordingly, so as to achieve the effect of increasing / decreasing the fresh air intake volume and decreasing / increasing the polluted air discharge volume. Here, the channel space of each duct body channel 21 can be represented by its pipe cross-sectional area S. It has been pointed out in the previous embodiment that the driving power sources of fresh air intake and polluted air discharge are both the same impeller in the fan cavity. Therefore, assuming that the air resistance pressure caused by other parts of the fresh air module is ignored, the air flow velocities of the two duct body channels 21 are basically the same. Based on q = S * v, it can be known that the air flow rate is positively correlated with the pipe cross-sectional area S of the channel. The larger the pipe cross-sectional area S, the higher the air flow rate, and vice versa. Therefore, this embodiment mainly adjusts the air flow rate of each of them by changing the pipe cross-sectional areas of the two duct body channels 21.

[0238] At the same time, the first duct body channel 211 and the second duct body channel 212 are separated by the same duct partition 213. Therefore, when the position of the duct partition 213 is adjusted, the pipe cross-sectional areas of the two duct body channels 21 can be changed simultaneously, and the changes in the pipe cross-sectional areas of the two duct body channels 21 are negatively correlated, that is, the larger the pipe cross-sectional area S1 of the first duct body channel 211, the smaller the pipe cross-sectional area S1 of the second duct body channel 212, and vice versa. Thus, compared with the form in the related art where the air volume needs to be adjusted by operating two air paths separately (for example, the rotational speeds of two fans need to be adjusted separately), the air volume adjustment method in this embodiment is more simple and fast.

[0239] Specifically, in combination with Figure 13b and 13hAs shown, the air duct partition 213 is a single strip-shaped plate body. Among them, in the transverse direction of the air duct partition 213, the air duct partition 213 has a first partition side 2131 and a second partition side 2132. Here, the transverse direction of the air duct partition 213 is the direction perpendicular to the length direction of the plate body, and the first partition side 2131 and the second partition side 2132 are respectively the sides where the air duct partition 213 abuts / adjacent to the inner pipe wall of the air duct body 21. In this embodiment, the first partition side 2131 is rotatably assembled with the inner pipe wall of the air duct body 21 and is configured as a swing fulcrum; the second partition side 2132 is configured as a swing free side, and the driving device can controllably drive the air duct partition 213 to swing with the first partition side 2131 as the swing fulcrum to change the channel space ratio of the first air duct body channel 211 and the second air duct body channel 212 after swinging.

[0240] Optionally, the air duct partition 213 has at least two or more of the reference position, the first position and the second position states, and the air duct partition 213 can be controllably switched between the two or more position states.

[0241] Here, when the air duct partition 213 is in the reference position state, the air duct partition 213 coincides with a radial line of the cross-section of the air duct body 21. In this state, the air duct partition 213 equally divides the air flow channel space of the air duct body 21, that is, the pipe cross-sectional area S1 of the first air duct body channel 211 = the pipe cross-sectional area S2 of the second air duct body channel 212, as Figure 13e shown. When the air duct partition 213 is in the first position state, the air duct partition 213 is biased towards the first air duct body channel 211 compared with the reference position state. In this state, the pipe cross-sectional area S1 of the first air duct body channel 211 < the pipe cross-sectional area S2 of the second air duct body channel 212, as Figure 13f shown. When the air duct partition 213 is in the second position state, the air duct partition 213 is biased towards the second air duct body channel 212 compared with the reference position state. In this state, the pipe cross-sectional area S1 of the first air duct body channel 211 > the pipe cross-sectional area S2 of the second air duct body channel 212, as Figure 13g shown.

[0242] Further, take the first air duct body channel 211 as the fresh air intake channel and the second air duct body channel 212 as the dirty air exhaust channel as an example. Optionally, when it is necessary to increase the fresh air intake volume and reduce the dirty air exhaust volume, the air duct baffle 213 can be controlled to switch to the second position state, so as to achieve the above-mentioned air volume effect by increasing the pipeline cross-sectional area S1 of the first air duct body channel 211 and reducing the pipeline cross-sectional area S2 of the second air duct body channel 212. Another option, when it is necessary to reduce the fresh air intake volume and increase the dirty air exhaust volume, the air duct baffle 213 can be controlled to switch to the first position state, so as to achieve the above-mentioned air volume effect by reducing the pipeline cross-sectional area S1 of the first air duct body channel 211 and increasing the pipeline cross-sectional area S2 of the second air duct body channel 212. Another option, in other cases, the air duct baffle 213 can be controlled to switch to the reference position state to achieve the equal air volume effect of fresh air intake and dirty air exhaust.

[0243] In some optional embodiments, the first partition side edge 2131 of the air duct body 21 is rotatably assembled with the inner tube wall of the air duct body 21 by means of an embedded groove.

[0244] Specifically, in some embodiments, a fulcrum receiving groove 241 is formed on the inner tube wall of the air duct body 21 corresponding to the first partition side 2131, and the first partition side 2131 of the air duct partition 213 is embedded in the fulcrum receiving groove 241 and can rotate relative to the fulcrum receiving groove 241, such as Figure 13c and 13d Optionally, the first partition side 2131 is constructed as a curved surface with a semicircular or arc-shaped cross section, and the fulcrum receiving groove 241 is correspondingly constructed as a curved groove with a semicircular or arc-shaped cross section, which can effectively reduce the rotation resistance of the first partition side 2131 relative to the fulcrum receiving groove 241 during the rotation process.

[0245] In this embodiment, the fulcrum receiving groove 241 is also formed by extending along the length direction of the air duct body 21, and its extension length is substantially equal to the length of the air duct partition 213, so that the first partition side 2131 can be integrally embedded in the fulcrum receiving groove 241, which can not only ensure the rotation effect of the air duct partition 213, but also reduce the air leakage at the connection position between the first partition side 2131 and the inner tube wall of the air duct body 21. Here, the fulcrum receiving groove 241 can also play a role in limiting the first partition side 2131, which can effectively reduce the misalignment problem caused by the air duct partition 213 being separated from the fulcrum receiving groove 241.

[0246] In some other embodiments not shown in the drawings, the duct body 21 and the first partition side 2131 of the duct partition 213 are pivotally connected by a partition rotating shaft. Specifically, at the longitudinal ends of the first partition side 2131 of the duct partition 213, a partition rotating shaft extends outward respectively. Correspondingly, the duct body 21 is provided with a shaft seat with a shaft hole at its corresponding position. The partition rotating shaft can extend into the shaft hole of the shaft seat and can rotate relatively. In this way, by applying the pivotal structure of the above-mentioned partition rotating shaft and shaft seat, the rotational cooperation between the duct body 21 and the duct partition 213 at the position of the first partition side 2131 can also be achieved.

[0247] Optionally, in order to reduce problems such as fatigue damage caused by stress concentration to the partition rotating shaft and the shaft seat, on the basis of the above embodiment, one or more partition rotating shafts are also convexly formed in the middle of the first partition side 2131. Correspondingly, one or more shaft seats with shaft holes are added to the inner pipe wall of the duct body 21. The partition rotating shafts and the shaft seats are in one-to-one correspondence to form a pivotal connection. By using the above-mentioned one or more additional pivotal structures, the number of pivotal connection points between the duct body 21 and the duct partition 213 can be increased, thereby achieving the effects of stress dispersion and service life improvement.

[0248] In some other embodiments not shown in the drawings, a secondary partition protruding towards the inside is formed on the inner pipe wall of the duct body 21. The secondary partition extends along the length direction of the pipe body and is adapted to the longitudinal length of the duct partition 213. Here, the secondary partition and the duct partition 213 cooperate to divide the air flow channel into a first duct body channel 211 and a second duct body channel 212. Here, from the cross-sectional view, the sum of the transverse lengths of the secondary partition and the duct partition 213 is approximately equal to the inner diameter of the duct body 21.

[0249] Optionally, the ratio of the transverse length of the secondary partition to the transverse length of the duct partition 213 can be 1:1, 1:2, 2:1, 1:3, etc. In this embodiment, by adding the secondary partition, the transverse length of the duct partition 213 can be effectively reduced, thereby reducing the weight of the plate body of the duct partition 213, making it easier for the driving device to drive the duct partition 213 to rotate.

[0250] Similarly, the fulcrum accommodating groove 241 or the partition rotating shaft (or shaft seat) shown in the previous embodiment is arranged on the protruding side of the secondary partition. The protruding side plate is the side of the secondary partition away from the duct body 21 and close to the duct partition 213, so that the first partition side 2131 of the duct partition 213 and the protruding side of the secondary partition can be rotatably assembled.

[0251] Optionally, the secondary partition and the duct body 21 are of an integral structure design.

[0252] In some other alternative embodiments, such as Figure 13cand 13d As shown, a swinging accommodation groove 2142 is formed by recessing on the inner pipe wall of the air duct body 21 corresponding to the second partition side 2132. The second partition side 2132 of the air duct partition 213 is movably embedded in the swinging accommodation groove 2142 and can swing in the swinging accommodation groove 2142 in the circumferential direction, so as to realize the adjustment of the separation position of the air duct partition 213.

[0253] In the embodiment, by setting the swinging accommodation groove 2142 and the embedding and assembling form of the second partition side 2132, the swinging limit of the second partition side 2132 can be achieved, and the air leakage gap can be reduced.

[0254] In the embodiment, taking the intersection point of the reverse extension line of the connection line between the swinging fulcrum and the axis of the air duct body 21 and the inner pipe wall of the air duct body 21 as the reference point, the swinging accommodation groove 2142 has a first groove section formed by extending along the first circumferential direction and / or a second groove section formed by extending along the second circumferential direction, as shown in the figure; the first circumferential direction is located on one side of the first air duct body channel 211, and the second circumferential direction is located on one side of the second air duct body channel 212 and is opposite to the first circumferential direction. Here, the reference point corresponds to the reference position in the previous embodiment. The first groove section can be used to realize the mutual switching between the reference position and the first position in the previous embodiment, and the second groove section can be used to realize the mutual switching between the reference position and the second position in the previous embodiment.

[0255] In this way, when it is necessary to reduce the fresh air intake and increase the dirty air discharge volume, the air duct partition 213 can be controlled to swing from the reference position to the side of the first groove section, as Figure 13f shown; when it is necessary to increase the fresh air intake and reduce the dirty air discharge volume, the air duct partition 213 can be controlled to swing from the reference position to the side of the second groove section, as Figure 13g shown. In other cases, the air duct partition 213 can be controlled to be in the above-mentioned reference position, as Figure 13e shown.

[0256] Optionally, as Figure 13d shown, the bottom surface of the swinging accommodation groove 2142 is constructed as an arc surface, and the curvature of the arc surface is adapted to the curvature of the swinging track of the second partition side 2132, so that the swinging accommodation groove 2142 will not form a structural interference to the swinging operation of the second partition side 2132, and the smoothness of the swinging of the second partition side 2132 is ensured.

[0257] In some alternative embodiments, to prevent the air duct partition 213 from slipping out of the swing receiving groove 2142, a stop block 243 is provided on each side of the inner wall of the air duct body 21 at the two sides of the swing of the second partition side 2132. The two stop blocks 243 are spaced apart to jointly define the swing range of the second partition side 2132. At the same time, when the air duct partition 213 swings along the first groove section or the second groove section to the end of the groove, it can be blocked by the stop block 243, which can limit the further outward swing of the second partition side plate. Here, the end of the groove is the end of the first groove section and the second groove section that is far from the reference point.

[0258] Exemplarily, as Figure 13c , 13e , 13f and 13g show, there are two sets of stop blocks 243, with 2 stop blocks 243 in each set. One set of stop blocks 243 is provided at one longitudinal end of the air duct partition 213, for example, at the end of the air duct partition 213 close to the outdoor side; the other set of stop blocks 243 is provided at the other longitudinal end of the air duct partition 213, for example, at the end of the air duct partition 213 close to the indoor side. To use the two sets of stop blocks 243 to perform stop and limit functions at the two longitudinal ends of the air duct partition 213 respectively.

[0259] Further, taking the embodiment shown in Figure 13e , 13f and 13g as an example, the side surface of the stop block 243 close to the swing receiving groove 2142 is used as the stop surface, and the stop surface is formed obliquely. It is configured that when the second partition side 2132 moves to the end position of the first groove section (or the second groove section), the stop surface is flush with the corresponding side surface of the second partition side plate to ensure the stop effect and reduce the air leakage gap.

[0260] In some alternative embodiments, the driving device is drivingly connected to the first partition side 2131 or the second partition side 2132.

[0261] Optionally, for the form in which the driving device is drivingly connected to the first partition side 2131, in combination with the partition rotating shaft shown in the foregoing embodiments, the driver includes a partition motor 241 and a linkage member. The partition motor 241 is drivingly connected to the partition rotating shaft through the linkage member, and then drives the first partition side 2131 to rotate in the fulcrum receiving groove 241.

[0262] Exemplarily, the linkage member includes a first gear and a second gear. The first gear is coaxially sleeved on the output shaft of the partition motor 241 and can rotate synchronously with the output shaft; the second gear is coaxially sleeved on the partition rotating shaft and can drive the partition rotating shaft to rotate synchronously. Moreover, the first gear and the second gear are in meshing cooperation. In this way, by driving the first gear and the second gear to rotate in sequence by the partition motor 241, the swing operation of the air duct partition 213 can be realized.

[0263] Another optional form is that the driving device is drivingly connected to the side edge 2132 of the second partition. The driving device includes a partition motor 241 and a gear mechanism. The partition motor 241 is drivingly connected to the side edge 2132 of the second partition through the gear mechanism. Among them, the gear structure includes a main gear 2421 and a sub-gear 2422. As Figure 13h shown, the main gear 2421 is sleeved on the output shaft of the partition motor 241 and can rotate synchronously with the output shaft; the sub-gear 2422 is configured as a sector gear. As Figure 13i shown, a clamping groove 24221 for clamping the side edge 2132 of the second partition is formed on the center side of the sector gear, and teeth that can mesh with the main gear 2421 are formed on the circumferential side. In this way, by driving the main gear 2421 and the sub-gear 2422 to rotate in sequence by the partition motor 241, the air duct partition 213 can be swung. Here, the sector arc of the sub-gear 2422 needs to meet the requirement that it can at least drive the air duct partition 213 to swing to both circumferential ends of the swing accommodation groove 2142.

[0264] In the embodiment, an installation notch is formed through the position of the air duct body 21 corresponding to the gear mechanism. The installation notch can be used to make at least part of the sub-gear 2422 extend into the air duct body 21 to try to assemble with the air duct partition 213.

[0265] In the above embodiment, the partition motor 241 is a bidirectional rotation motor, so as to drive the side edge 2132 of the air duct partition 213 to swing from the reference point to the first slot section (or the second slot section), or drive the side edge 2132 of the air duct partition 213 to swing from the first slot section (or the second slot section) to the reference point direction.

[0266] Optionally, as Figure 13 and 13c shown, the driving device further includes a motor mounting seat 244, which can be used to mount the partition motor 241 on the fresh air duct 20 or the module housing of the fresh air module.

[0267] Further, in some other optional embodiments, in combination with the form in which the position of the air duct partition can be changed shown above, the present application also discloses an air volume control method for a fresh air module, which can be used to adjust and control the fresh air intake volume / dirty air exhaust volume in cooperation with the operation mode of the fresh air module.

[0268] Specifically, as Figure 14 shown, the main steps of the air volume control method include:

[0269] S101. Obtain the operation mode of the fresh air module;

[0270] In this embodiment, the operation modes of the fresh air module include a first mode or a second mode. Among them, the first mode is used to make the indoor and outdoor environmental air pressures equal, and the second mode is used to make the indoor and outdoor environmental air pressures unequal.

[0271] In some embodiments, the first mode is a two-way air exchange mode with the same (or basically close) fresh air intake and exhaust air volumes. In this way, the fresh air intake volume flowing in through the first air duct body channel is basically the same as the dirty air exhaust volume flowing out through the second body channel. While ventilating the indoor environment, the indoor environmental air pressure can be kept in a stable and constant state.

[0272] In still some other embodiments, the second mode is a two-way air exchange mode but the fresh air intake and exhaust air volumes are not the same. For example, assume that the first air duct body channel is used as the fresh air intake channel and the second air duct body channel is used as the dirty air exhaust channel. Then in this second mode, the fresh air intake volume flowing in through the first air duct body channel is greater than the dirty air exhaust volume flowing out through the second body channel. In this case, for the indoor environment, the amount of air flowing in is greater than the amount of air flowing out, causing the indoor environmental air pressure to rise. Here, this mode is defined as the positive pressure mode. Another example is that in this second mode, the fresh air intake volume flowing in through the first air duct body channel is less than the dirty air exhaust volume flowing out through the second body channel. In this case, for the indoor environment, the amount of air flowing in is less than the amount of air flowing out, causing the indoor environmental air pressure to drop. Here, this mode is defined as the negative pressure mode. The second mode can be either the positive pressure mode or the negative pressure mode.

[0273] S102. Adjust the position of the air duct partition relative to the inside of the fresh air duct according to the operation mode of the fresh air module;

[0274] In some embodiments, when the operation mode of the fresh air module is the first mode, the position of the air duct partition relative to the inside of the fresh air duct is adjusted to the first position state. In this first position state, the proportion of the channel space areas of the two air duct body channels is the same, so that the air flow rates flowing through the first air duct body channel and the second air duct body channel are kept consistent, and the indoor environmental air pressure is in a constant state.

[0275] When the operation mode of the fresh air module is the second mode, the position of the air duct partition relative to the inside of the fresh air duct is adjusted to the second position state. In this second position state, the proportion of the channel space areas of the two air duct body channels is not the same. For example, it can be made that the proportion of the channel space area of the first air duct body channel is greater than the proportion of the channel area of the second air duct body channel, or the proportion of the channel space area of the first air duct body channel is less than the proportion of the channel area of the second air duct body channel. Furthermore, the air flows out through the two air duct body channels can be made inconsistent, so that there is an air pressure difference between the indoor environment and the outdoor environment.

[0276] The air volume control method for the fresh air module in the embodiments of the present disclosure is based on the improvement of the fresh air duct structure, and adjusts the air intake and exhaust volume by adjusting the position of the duct partition plate. Furthermore, according to the settings of the indoor and outdoor environmental pressures in different operating modes of the fresh air module, the position of the duct partition plate relative to the inside of the fresh air duct is controlled to adjust the intake and exhaust air volumes and the indoor environmental pressure.

[0277] Further, set the indoor environmental pressure as P 室内 , and the outdoor environmental pressure as P 室外 ; and the cross-sectional area of the channel space of the first duct body channel is S1, and the cross-sectional area of the channel space of the second duct body channel is S2.

[0278] Then, when the second mode is the aforementioned positive pressure mode, the fresh air module can make P 室内 > P 室外 by operating this positive pressure mode; at this time, the second position state corresponds to S1 > S2, that is, the cross-sectional area of the channel space of the first duct body channel is larger than the cross-sectional area of the second duct body channel, and the proportion of the channel area of the first duct body channel is higher to ensure that the fresh air intake volume is greater than the dirty air exhaust volume.

[0279] And when the second mode is the aforementioned negative pressure mode, the fresh air module can make P 室内 < P 室外 by operating this negative pressure mode; at this time, the second position state corresponds to S1 < S2, that is, the cross-sectional area of the channel space of the first duct body channel is smaller than the cross-sectional area of the second duct body channel, and the proportion of the channel area of the second duct body channel is higher to ensure that the dirty air exhaust volume is greater than the fresh air intake volume.

[0280] Optionally, the air volume control method for the fresh air module is implemented in the form of a rotatable duct partition plate shown in the foregoing embodiments. Then, the step of "adjusting the position of the duct partition plate relative to the inside of the fresh air duct" in the foregoing step S102 may specifically include: controlling the swing direction and swing amplitude of the duct partition plate to adjust its position inside the duct.

[0281] In this optional embodiment, by controlling the swing direction of the duct partition plate, the switching from the first mode to the second mode can be achieved; and by controlling the swing amplitude of the duct partition plate, the air volume difference between the fresh air intake volume and the dirty air exhaust volume in the second mode can be controlled, thereby adjusting the change amplitude of the indoor environmental pressure.

[0282] In this way, as shown in Figure 14a , the present application also provides an air volume control method for a fresh air module, and its main steps include:

[0283] S201. Obtain the operating mode of the fresh air module;

[0284] Optionally, the specific implementation of step S201 may refer to the foregoing embodiment S101 and will not be elaborated herein.

[0285] S202. Determine that the operation mode of the fresh air module is the positive pressure mode, and then execute step S204;

[0286] S203. Determine that the operation mode of the fresh air module is the negative pressure mode, and then execute step S205;

[0287] In this embodiment, the specific operation mode of the fresh air module in steps S202 and S203 can be confirmed according to the system instruction.

[0288] S204. Control the air duct partition to swing towards the second air duct body channel side; the process ends.

[0289] In this embodiment, by swinging the air duct partition towards the second air duct body channel side, the channel space ratio of the first air duct body channel can be increased, and the channel space ratio of the second air duct body channel can be decreased, thereby increasing the fresh air intake volume and decreasing the dirty air exhaust volume.

[0290] Specifically, in combination with the foregoing embodiment, when executing step S204, the partition motor can be controlled to rotate, and drive the air duct partition to swing from the reference position towards the second slot section side.

[0291] S205. Control the air duct partition to swing towards the first air duct body channel side; the process ends.

[0292] In this embodiment, by swinging the air duct partition towards the first air duct body channel side, the channel space ratio of the second air duct body channel can be increased, and the channel space ratio of the first air duct body channel can be decreased, thereby decreasing the fresh air intake volume and increasing the dirty air exhaust volume.

[0293] Specifically, in combination with the foregoing embodiment, when executing step S205, the partition motor can be controlled to rotate, and drive the air duct partition to swing from the reference position towards the first slot section side.

[0294] Therefore, in the embodiments of the present disclosure, according to whether the second mode is specifically the positive pressure mode or the negative pressure mode, the air duct partition is controlled to swing towards the corresponding air duct body channel side, thereby changing the channel space area of the fresh air intake channel and the dirty air exhaust channel, so as to realize the control and adjustment of the fresh air intake volume and the dirty air exhaust volume.

[0295] In some alternative embodiments, the step of "controlling the swing amplitude of the air duct partition to adjust its position inside the duct" in the previous steps may specifically include: obtaining the indoor-outdoor environmental air pressure difference corresponding to the second mode; determining the air volume difference between the fresh air inflow volume and the polluted air exhaust volume according to the indoor-outdoor environmental air pressure difference; and matching the target swing amplitude of the corresponding air duct partition based on the air volume difference between the fresh air inflow volume and the polluted air exhaust volume.

[0296] Exemplarily, the embodiments of the present disclosure preset an association relationship. In this association relationship, multiple preset values of indoor-outdoor environmental air pressure differences are respectively set for the positive pressure mode and the negative pressure mode, as well as the air volume differences between the fresh air inflow volume and the polluted air exhaust volume corresponding to each indoor-outdoor environmental air pressure difference preset value, and the swing amplitude of the air duct partition corresponding to each air volume difference. The association relationship is shown in Table 1 below:

[0297] Table 1

[0298]

[0299] In the embodiment, the greater the indoor-outdoor environmental air pressure difference, the faster the air flow flows in / out through gaps such as indoor doors and windows, and vice versa. Therefore, in this embodiment, by selecting different indoor-outdoor environmental air pressure differences adapted to the second mode and controlling the swing amplitude of the air duct partition based on this, the effect of controlling the renewal and purification speed of this part of the air flow can be achieved.

[0300] Optionally, taking the positive pressure mode as an example, the fresh air module presets multiple modes such as a strong positive pressure mode, a medium positive pressure mode, and a micro positive pressure mode. Among them, the preset value of the indoor-outdoor environmental air pressure difference corresponding to the strong positive pressure mode is greater than the preset value of the indoor-outdoor environmental air pressure difference corresponding to the medium negative pressure mode, and the preset value of the indoor-outdoor environmental air pressure difference corresponding to the medium mode is greater than the preset value of the indoor-outdoor environmental air pressure difference corresponding to the micro negative pressure mode. Then, the embodiments of the present disclosure can select the corresponding air volume difference △q from Table 1 above according to the specific selected strength type of the positive pressure mode, and further select the adapted swing amplitude ∠α according to the selected air volume difference △q.

[0301] In Table 1 above, the indoor-outdoor environmental air pressure difference △P and the air volume difference △q have a positive correlation, and the air volume difference △q and the swing amplitude ∠α have a positive correlation.

[0302] In the embodiment, during the operation of the fresh air module, since the user may perform operations such as opening and closing doors and windows, these operations will also cause changes in the indoor environmental air pressure, thereby affecting the regulation effect of the fresh air module on the indoor air pressure. In view of the above situation, the present application also discloses an air volume control method for the fresh air module, combined with Figure 14b as shown, its main steps include:

[0303] S301. Obtain the operation mode of the fresh air module;

[0304] S302. Adjust the in-duct position of the air duct partition relative to the fresh air duct according to the operating mode of the fresh air module; and start timing.

[0305] Optionally, the specific execution processes of steps S301 and S302 can refer to the foregoing embodiments and will not be elaborated herein.

[0306] S303. Determine the current elapsed time.

[0307] Optionally, the timing function of the fresh air module can be implemented by an electronic component with a timing function.

[0308] S304. Determine whether the elapsed time is greater than or equal to the first duration. If so, execute step S305; if not, return to step S303.

[0309] In some embodiments, the first duration is a preset fixed duration, such as 10 min, 15 min, 20 min, etc.

[0310] In some other embodiments, the second duration is determined according to the floor area of the current user's house, the number of doors and windows, etc. Among them, the floor area of the current user's house can be used to calculate the air volume of the entire house or the working area of the fresh air module. As the path of air flow, the number of doors and windows can be used to determine the speed of indoor air overflow (positive pressure mode) or external air infiltration (negative pressure mode) except for the fresh air module.

[0311] In this way, before the fresh air module or the air conditioner with this fresh air module leaves the factory, the duration required for the indoor and outdoor air pressures to reach the set pressure difference requirement can be measured by means of experimental tests, etc. when the fresh air module operates at different ventilation powers under different house areas (working areas) and the number of doors and windows. And based on this, a relevant correlation is constructed and pre-stored in the electronic control module of the relevant fresh air module (or air conditioner).

[0312] In this way, after the user purchases the fresh air module (or air conditioner), relevant information of the house can be input through the control panel of the module itself or programs such as APP. The relevant information includes but is not limited to the above-mentioned floor area of the house, the number of doors and windows, etc. Based on the relevant information input by the user, the first duration corresponding to the current user can be determined.

[0313] S305. Detect the current indoor environmental pressure on the indoor side and the current outdoor environmental pressure on the outdoor side, and calculate the pressure difference between the two.

[0314] Optionally, the fresh air module further includes a first air pressure sensor and a second air pressure sensor. Among them, the first air pressure sensor is arranged on the indoor side and is used to detect the ambient air pressure on the indoor side in real time, and the second air pressure sensor is arranged on the outdoor side and is used to detect the ambient air pressure on the outdoor side in real time. The current indoor ambient air pressure on the indoor side and the current outdoor ambient air pressure on the outdoor side in step S305 can be detected by the above two air pressure sensors.

[0315] Another option is that the fresh air module can also establish a communication link with an external meteorological server. In this way, the fresh air module can send a pressure query request to the meteorological server and receive the pressure query result returned by the meteorological server. The pressure query result includes the outdoor ambient air pressure in the user's current area. Thus, it can be used as the current outdoor ambient air pressure in step S305.

[0316] S306. Perform a first compensation adjustment on the in-duct position of the air duct partition according to the air pressure difference between the current indoor ambient air pressure and the current outdoor ambient air pressure.

[0317] Optionally, the specific implementation method of step S306 includes: comparing the air pressure difference between the current indoor ambient air pressure and the current outdoor ambient air pressure with the target air pressure difference; if the air pressure difference deviates from the target air pressure difference, perform a first compensation adjustment on the in-duct position of the air duct partition. Here, the target air pressure difference can be the preset value of the indoor and outdoor ambient air pressure difference selected in the current operation mode in the previous embodiment.

[0318] Further, if the air pressure difference is greater than or equal to the target air pressure difference, the first compensation adjustment includes controlling the air duct partition to swing in the reverse direction to reduce the adjustment amplitude of the air duct partition in step S302, and then reducing the indoor and outdoor air pressure difference by reducing the difference in the air intake and exhaust air volumes. If the air pressure difference is less than the target air pressure difference, the first compensation adjustment includes controlling the air duct partition to swing in the same direction to further increase the adjustment amplitude of the air duct partition in step S302, and then increasing the indoor air pressure difference by increasing the difference in the air intake and exhaust air volumes. Here, the reverse swing means that the swing direction of the air duct partition this time is opposite to the swing direction in step S302, and the same-direction swing means that the swing direction of the air duct partition this time is the same as the swing direction in step S302.

[0319] Optionally, the swing adjustment amplitude of the first compensation adjustment for the air duct partition can be controlled according to the deviation value between the above air pressure difference and the target air pressure difference. Here, the swing adjustment amplitude is positively correlated with the deviation value.

[0320] In the embodiment of the present disclosure, the indoor and outdoor ambient air pressures are detected in real time after the first adjustment of the air duct partition position to judge the control effect of the air duct adjustment on the ambient air pressure; and compensation adjustment can be performed in time when the preset air pressure difference is not reached or exceeded, so that the indoor and outdoor ambient air pressure difference can be maintained at the preset effect.

[0321] In the form of the fresh air module shown above, the air filter element of the fresh air module has two filter element parts. In the two-way air change mode, the first filter element part is used to filter the fresh air flow, and the second filter element part is used to filter the polluted air flow. More or less dust and other impurities will be mixed in the fresh air flow and the polluted air flow. Therefore, the filter element will be blocked after long-term use, reducing the air circulation efficiency of the filter element. And because the air sources of the fresh air flow and the polluted air flow are different, the impurity content and properties also vary, which makes the blockage degrees of the two filter element parts different, thus affecting the operation effect of the fresh air module, such as affecting the air pressure adjustment in the aforementioned positive pressure mode or negative pressure mode.

[0322] In view of the above situation, the present application also discloses an air volume control method for a fresh air module, combined with Figure 14c as shown, its main steps include:

[0323] S401. Obtain the operation mode of the fresh air module;

[0324] S402. According to the operation mode of the fresh air module, adjust the in-duct position of the air duct partition relative to the fresh air duct;

[0325] Optionally, the specific execution processes of steps S401 and S402 can refer to the foregoing embodiments and will not be elaborated here.

[0326] S403. Detect the air resistance of the first filter element part and the second filter element part respectively, and obtain the blockage information of the air filter element;

[0327] In some embodiments, the fresh air module is also internally provided with a wind speed sensor, which can be used to detect the air flow velocity flowing through the first filter element part and the second filter element part, and determine the corresponding air resistance according to the air flow velocity. Here, the air flow velocity and the air resistance can be obtained through a preset mapping relationship, and this mapping relationship is obtained based on the experimental tests before the fresh air module leaves the factory.

[0328] Optionally, the blockage information of the air filter element can be directly represented by the obtained air resistance. Another option is that the blockage information of the air filter element can be represented by the blockage level corresponding to the air resistance detected in real time. Here, the blockage levels can be divided into several levels such as mild, moderate, and severe, and the blockage degrees represented by each blockage level are positively correlated with the air resistance.

[0329] S404. According to the blockage information of the air filter element, perform a second compensation adjustment on the in-duct position of the air duct partition.

[0330] Optionally, after the second compensation adjustment of the in-duct position of the air duct partition, the air flow rate of the filter element part on the side with a more severe air filter element clogging degree increases, and the air flow rate of the filter element part on the side with a less severe clogging degree decreases, thereby increasing the air flow rate of the filter element part on the side with a more severe clogging degree and reducing the influence of the filter element resistance on the air flow rate.

[0331] Exemplarily, when step S403 of a certain process is executed, the obtained clogging information of the air filter element includes that the first filter element part is slightly clogged and the second filter element part is severely clogged. Then, the air duct partition is controlled to swing towards the first air duct body channel side to increase the channel space ratio of the second air duct body channel corresponding to the second filter element part and improve the air flow rate of the second air duct body channel.

[0332] Optionally, the adjustment range of the second compensation adjustment can be confirmed according to the air resistance difference between the two filter element parts. Here, the greater the air resistance difference between the two filter element parts (the greater the difference in clogging levels), the greater the adjustment of the swing range of the air duct partition.

[0333] In some other alternative embodiments, in addition to the aforementioned two-way air change mode, the operation mode of this fresh air module further includes a fresh air only mode. In the fresh air only mode, outdoor fresh air enters the air inlet cavity through the first air duct body channel and the second air duct body channel, and flows through the first filter element part and the second filter element part respectively. Therefore, in order to improve the fresh air input efficiency, the air volume control method of this application further includes controlling a third compensation adjustment of the in-duct position of the air duct partition in the fresh air only mode.

[0334] Exemplarily, during the operation of a certain fresh air only mode, the obtained clogging information of the air filter element includes that the first filter element part is slightly clogged and the second filter element part is severely clogged. Then, the air duct partition is controlled to swing towards the second air duct body channel side to increase the channel space ratio of the first air duct body channel corresponding to the first filter element part and improve the air flow rate of the first air duct body channel.

[0335] Here, after the third compensation adjustment of the in-duct position of the air duct partition, the air flow rate of the filter element part on the side with a more severe air filter element clogging degree decreases, and the air flow rate of the filter element part on the side with a less severe clogging degree increases, thereby increasing the fresh air flow rate introduced by the fresh air module and improving the fresh air efficiency.

[0336] In still other alternative embodiments, in the previous embodiments, the duct partition is driven to rotate through a transmission mechanism such as a rotating shaft or a gear. In the above forms, situations such as transmission disconnection may occur, resulting in the failure of the duct partition to swing as expected and the corresponding air volume adjustment. In view of the above situation, the air volume control method of the present application further includes: after performing the operation of adjusting the position of the duct partition in the duct, detecting the fresh air intake volume and the dirty air exhaust volume of each of the two duct channels; when the fresh air intake volume and / or the dirty air exhaust volume do not meet the set air volume requirements, it is determined that there is a fault problem with the duct partition.

[0337] Similarly, a wind speed sensor is further provided on the fresh air pipe of the fresh air module. The wind speed sensor can be used to detect the air flow velocity flowing through the first duct body channel and the second duct body channel, and determine the air flow volume of each of the two duct channels according to the air flow velocity, including the fresh air intake volume of the first duct body channel and the dirty air intake volume of the second duct body channel.

[0338] Optionally, the set air volume requirements include: the fresh air intake volume is greater than or equal to a preset fresh air target volume, and / or, the dirty air exhaust volume is greater than or equal to a preset dirty air target volume.

[0339] Therefore, in the embodiments of the present disclosure, the air volume flowing through the fresh air pipe is detected to determine whether the duct partition has moved to the set adjustment position; and when the air volume does not meet the set air volume requirements, it can be determined that there is a fault with the duct partition, and an alarm needs to be given to the user or a prompt for repair is provided.

[0340] Combined Figure 14d As shown, the embodiments of the present disclosure provide an air volume control device 500 for a fresh air module, including a processor 501 and a memory 502. Optionally, the device may further include a communication interface 503 and a bus 504. Among them, the processor 501, the communication interface 503, and the memory 502 can complete mutual communication through the bus 504. The communication interface 503 can be used for information transmission. The processor 501 can call the logical instructions in the memory 502 to execute the air volume control device for the fresh air module in the above embodiments. The air volume control device 500 can be installed on the fresh air module or an air conditioner.

[0341] In addition, when the logical instructions in the above-mentioned memory 502 are implemented in the form of a software functional unit and sold or used as an independent product, they can be stored in a computer-readable storage medium.

[0342] The memory 502, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as the program instructions / modules corresponding to the methods in the embodiments of the present disclosure. The processor 501 executes functional applications and data processing by running the program instructions / modules stored in the memory 502, that is, implements the air volume control device for the fresh air module in the above embodiments.

[0343] The memory 502 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 502 may include a high-speed random access memory and may also include a non-volatile memory.

[0344] In Figure 12d and 12e 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 provided on the pipe joint 22 of the fresh air pipe 20.

[0345] In some alternative embodiments, the fresh air module 1 further includes an air duct switch part, which is arranged at the position of the second fresh air outlet pipe opening 2321. The air duct switch part is used to controllably open or close the second fresh air outlet pipe opening 2321. Optionally, the air duct switch part is configured to at least open the second fresh air outlet pipe opening 2321 in the all-fresh air mode, so that the second air duct passage 232 is connected to the outdoor air outlet 114, and outdoor fresh air can flow into the air inlet chamber 11; and close the second fresh air outlet pipe opening 2321 in the two-way air exchange mode, so that the second air duct passage 232 is blocked from the outdoor air outlet 114.

[0346] Here, the air duct switch part includes an air duct baffle and a second driver. 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 pipe opening 2321.

[0347] Optionally, the air duct baffle is slidably disposed at the second fresh air outlet 2321 relative to the second side wall 1112. A second rack is provided on one side edge of the air duct baffle, and the second rack is formed by longitudinally extending along this side edge; the second driver includes a second drive motor and a second gear. The second gear is sleeved on the drive shaft of the second drive motor and is meshed with the second rack. In this way, by controlling the bidirectional rotation of the second drive motor, the air duct baffle is driven by the cooperation of the second gear and the second rack to move towards the direction close to the second fresh air outlet 2321 or move away from the second fresh air outlet 2321. When moving towards the direction close to the second fresh air outlet 2321, the air duct baffle can cover the indoor air return opening 113 to close the second fresh air outlet 2321; and when moving away from the second fresh air outlet 2321, the air duct baffle disengages from the position covering the second fresh air outlet 2321 to open the second fresh air outlet 2321.

[0348] Another option is that the air duct baffle is pivotally connected to one side edge of the second fresh air outlet 2321. The second driver includes a second drive motor and a pivot shaft, and the air duct baffle is disposed on the pivot shaft. In this way, by controlling the second drive motor to drive the air duct baffle to perform a flipping action, the air duct baffle can be used to close or open the second fresh air outlet 2321.

[0349] In the foregoing Figure 11 illustrated embodiment, since the outdoor air outlet 114 (the second fresh air outlet pipe orifice) and the indoor air return opening 113 are both provided on the second side wall 1112 of the air inlet chamber 11 and are adjacent to each other, in this embodiment, the outdoor air outlet 114 (the second fresh air outlet pipe orifice) and the indoor air return opening 113 can share the same switching component, and the same switching component is used to simultaneously realize the switching of the respective closed / open states of the second fresh air outlet pipe orifice and the indoor air return opening 113, which can effectively simplify the number of switching components and the complexity of the module structure.

[0350] Specifically, in combination with Figure 16 and 16a as shown, the fresh air module 1 further includes an integrated switch portion 40, which is provided on the second side wall 1112 where the outdoor air outlet 114 and the indoor air return opening 113 are located, and is configured to at least open the second fresh air outlet 2321 in the all-fresh air mode and close the indoor air return opening 113; and close the second fresh air outlet 2321 and open the indoor air return opening 113 in the two-way air exchange mode.

[0351] In combination with Figure 16As shown, the integrated switch unit 40 includes a wind deflector 41 and an integrated driver. Among them, the wind deflector 41 is slidably disposed on the second side wall 1112 of the air inlet chamber 11. The integrated driver is drivingly connected to the wind deflector 41 and is configured to at least drive the wind deflector 41 to move between a first sliding position and a second sliding position; when the wind deflector 41 is located at the first sliding position, the wind deflector 41 opens the first fresh air outlet pipe opening 2311 and the second fresh air outlet pipe opening 2321, and blocks the indoor air return opening 113, as Figure 17a shown; and when the wind deflector 41 is located at the second sliding position, the wind deflector 41 blocks the second fresh air outlet pipe opening 2321, and opens the indoor air return opening 113 and the first fresh air outlet pipe opening 2311, as Figure 17b shown. Here, the first sliding position is located at a position on the second side wall 1112 close to the second sub-air inlet chamber 116, and the second sliding position is located at a position on the second side wall 1112 close to the first sub-air inlet chamber 115.

[0352] Optionally, a baffle rack 42 is provided on one side (or side surface) of the wind deflector 41, and the baffle rack 42 is formed by longitudinally extending along the side. The integrated driver includes an integrated drive motor 43 and an integrated gear 44. The integrated gear 44 is sleeved on the drive shaft of the integrated drive motor 43 and is meshed with the baffle rack 42. In this way, by controlling the integrated drive motor 43 to rotate bidirectionally, the wind deflector 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.

[0353] In some other alternative embodiments, the integrated driver is further configured to move closer to or away from a third sliding position. Here, when the wind deflector 41 is located at the third sliding position, the wind deflector 41 completely blocks the outdoor air outlet 114. Therefore, both the first air duct channel 231 and the second air duct channel 232 are in a blocked state with the air inlet chamber 11, and at the same time, the indoor air return opening 113 is in an open state, as Figure 17c shown.

[0354] In Figure 17c the third sliding position is on the other side of the second sliding position away from the first sliding position. When the wind deflector 41 is located at the third sliding position, outdoor fresh air cannot be introduced into the air inlet chamber 11, and only indoor air is conveyed to the air inlet chamber 11 through the indoor air return opening 113.

[0355] In some alternative embodiments, the partition plate 15 is a split structure, which includes a first partition plate 154 and a second partition plate 155 that are longitudinally connected along the plate body, as Figures 17a to 17cAs shown. Optionally, the first partition 154 is composed of the first arc plate segment 151 and the middle arc plate segment 153 in the previous embodiment, and the second partition 155 is composed of the second arc plate segment 152; alternatively, the first partition 154 is composed of the first arc plate segment 151, and the second partition 155 is composed of the second arc plate segment 152 and the middle arc plate segment 153.

[0356] Here, the first partition 154 is fixed in the air inlet chamber 11. The second partition 155 is arranged on the wind deflector 41 of the integrated switch part 40, and the second partition 155 can slide synchronously with the wind deflector 41. In this embodiment, the bottom end of the second partition 155 is fixed on the side surface of the wind deflector 41 facing the air inlet chamber 11. Optionally, the second partition 155 and the wind deflector 41 are of an integral structure, or the bottom end of the second partition 155 is fixed on the corresponding side surface of the wind deflector 41 by means such as gluing or welding.

[0357] Specifically, when the wind deflector 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 pipe 20 is communicated with both the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116, and 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 deflector 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 together serve to separate the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116, so that the fresh air pipe 20 is only connected to the first sub-air inlet chamber 115 through the outdoor air outlet 114, and the fresh air pipe 20 is blocked from the second sub-air inlet chamber 116.

[0358] And, when the wind deflector 41 moves to the third 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 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 air return opening 113 is communicated with both the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116, and indoor air can flow to the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116 at the same time.

[0359] In some other alternative embodiments, in combination with Figures 18 to 18b As shown in FIGS. 22, the fresh air module 1 further includes an air outlet switching part 30 (air outlet switching mechanism), which is arranged at the connecting position of the branch pipe orifice 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 conducted with one of the branch pipe orifice 2322 and the second indoor air outlet 52, and the other is blocked.

[0360] 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.

[0361] Combination Figure 18b As shown, the air outlet switching unit 30 includes a switching housing 31 and an air blocking assembly.

[0362] 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.

[0363] Optionally, the wind blocking assembly includes a wind blocking block 32 and a wind blocking motor 33, such as Figure 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). Figure 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). Figure 20b shown.

[0364] 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. Figure 20a and 20bAs shown, the switching air inlet 311 is located on the upper side of the rotation axis, the first switching air outlet 312 is located on the right side of the rotation axis, and the second switching air outlet 313 is located on the lower left side of the rotation axis. This enables the air blocking block 32 to switch among multiple set rotation positions during the process of rotating around the outer circumference of its rotation axis.

[0365] Optionally, the switching housing 31 includes a circular cavity 314, and the outer circumference of the circular cavity 314 has arc-shaped openings respectively corresponding to the switching air inlet 311, the first switching air outlet 312, and the second switching air outlet 313.

[0366] Combined with Figure 18a and 21a As shown, the air blocking block 32 includes a central rotating shaft 321 and an air 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 air blocking motor 33, and the air blocking motor 33 is arranged on an axial outer side surface of the switching housing 31. The air blocking baffle 322 is fixedly connected to the central rotating shaft 321, so that the air blocking motor 33 can drive the air blocking baffle 322 to rotate in the circular cavity 314 through the central rotating shaft 321.

[0367] Optionally, the air blocking baffle 322 includes an arc-shaped plate member 3221 and a support plate 3222. The arc-shaped plate member 3221 is formed by extending along the circumferential line of the circular cavity 314, and the radian of the arc-shaped plate member 3221 is greater than or equal to the radian of each arc-shaped opening, so as to block any arc-shaped opening during the rotation process. The support plate 3222 is used to connect the central rotating shaft 321 and the air blocking baffle 322, and is configured as a fan-shaped sheet body whose plate surface extends radially from the central rotating shaft 321. The outer arc edge of the support plate 3222 is fixedly connected to the air blocking baffle 322, and the center of the arc is fixedly connected to the central rotating shaft 321, as Figure 19a shown.

[0368] In some alternative embodiments, the number of the support plates 3222 is one, which is fixed to one end of the central rotating shaft 321, for example, the left end or the right end of the central rotating shaft 321. The single support plate 3222 can effectively reduce the overall weight of the air blocking baffle 322, thereby reducing the operating power consumption of the air blocking motor 33. In some other alternative embodiments, the number of the support plates 3222 is two, and the two are symmetrically fixed to both ends of the central rotating shaft 321. In this embodiment, the two support plates 3222 can provide support for the axial two sides of the arc-shaped plate member 3221, preventing the air blocking baffle 322 from being deflected under the action of the wind pressure, and ensuring the wind blocking effect of the air blocking baffle 322 in the switching air cavity.

[0369] Optionally, the motor housing of the air blocking motor 33 is provided with fixed ear plates 331, and the fixed ear plates 331 are provided with screw holes, as Figure 19bAs shown; a fixing seat 315 is provided on the outer wall of the circular cavity 314, such as Figure 21 shown. The air damper motor 33 is assembled to the circular cavity 314 through the fixing ear plates 331 and the fixing seat 315.

[0370] In still some alternative embodiments, the second air duct passage 232 can be replaced by another separate sewage air duct, that is, the first air duct passage 231 serves as the fresh air duct 20 alone, for conveying outdoor fresh air to the indoor side; the sewage air duct replaces the second air duct passage 232, and it can at least be used to discharge indoor polluted air to the outdoor side. Here, the sewage air duct has an indoor pipe orifice on the indoor side and an outdoor pipe orifice on the outdoor side, wherein the indoor pipe orifice communicates with the first switching outlet of the air outlet switching mechanism. After the indoor polluted air enters the module housing 10 from the indoor air return opening 113, it flows through the air inlet cavity 11, the fan cavity 12, and the switching air cavity in sequence and then flows to the sewage air duct, and finally is discharged to the outdoor side through the sewage air duct.

[0371] In the embodiment, the sewage air duct and the indoor air outlet are arranged at a certain distance from each other. Correspondingly, as shown in Figure 18a shown, the switching air cavity further includes an outward expanding cavity, and the outward expanding cavity extends from the circular cavity 314 towards the side of the sewage air duct (the second air duct passage 232) for communicating the circular cavity 314 and the indoor pipe orifice (the branch pipe orifice 2322) of the sewage air duct (the second air duct passage 232). The extending distance of the outward expanding cavity is adapted to the interval distance between the sewage air duct and the indoor air outlet.

[0372] The partition plate 15 shown in the foregoing embodiments is fixed in the inner space of the air inlet cavity 11, and the relative position between the partition plate 15 and the cavity of the air inlet cavity 11 is unchangeable, which makes the cavity spaces of the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 also basically fixed. This limits the application range of this fresh air module and cannot meet some users' requirements for enhanced functions. For example, when the air quality difference between the indoor and outdoor environments is not large but the temperature difference is large, some users will hope to appropriately reduce the input of outdoor fresh air to reduce the disturbance effect of outdoor fresh air on the indoor temperature. In view of the above situation, in still some alternative embodiments, the partition member provided in the fresh air module 1 is designed in a movable form, so that the partition member can move relative to the inner cavity of the module housing 10, and during the movement, the cavity spaces of the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116, thereby achieving the effect of changing the air volume of the outdoor fresh air conveyed by the first sub-air inlet cavity 115 and / or the air volume of the indoor polluted air conveyed by the second sub-air inlet cavity 116.

[0373] In some embodiments, the separating member is movably disposed in the air inlet cavity 11 of the module housing 10, and its relative position with respect to the air inlet cavity 11 can be controlled to adjust the cavity spaces of the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 respectively. In the embodiments of the present disclosure, the fresh air module 1 disposes the separating member in the air inlet cavity 11 in a movable form. In this way, during the movement of the separating member, the cavity spaces of the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 formed by its separation can be changed, thereby achieving the effect of adjusting the fresh air intake volume and the dirty air discharge volume.

[0374] Optionally, the separating member adjusts its relative position with respect to the air inlet cavity 11 in the form of rotation, sliding, etc. relative to the air inlet cavity 11.

[0375] Here, the air inlet cavity air outlet 112 is opened on the air outlet cavity wall 1116. The separating member can divide the air inlet cavity air outlet 112 into a first sub-air outlet and a second sub-air outlet. The first sub-air outlet and the second sub-air outlet respectively correspond to the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116, serving as the paths for the airflows of the two sub-air inlet cavities to output to the fan cavity 12 respectively. In this way, during the operation of the separating member rotating, sliding, etc. relative to the air inlet cavity 11, the relative position between the separating member and the air inlet cavity air outlet 112 can be changed, causing the dividing boundary position of the separating member for the first sub-air outlet and the second sub-air outlet to change, thereby achieving the effect of changing the outdoor fresh air volume of the first sub-air inlet cavity 115 and / or the indoor dirty air volume of the second sub-air inlet cavity 116.

[0376] Specifically, in some alternative embodiments, as shown in Figures 22a to 22c The separating member is pivotally connected to the air inlet cavity 11, enabling the separating member to rotate relative to the air inlet cavity 11, thereby achieving the purpose of adjusting its relative position with respect to the air inlet cavity 11. In this embodiment, the separating member includes a movable partition 181 and a partition driver 182. The partition driver 182 can drive the movable partition 181 to rotate in the air inlet cavity 11.

[0377] Here, the movable partition 181 is pivotally connected in the air inlet cavity 11, and its rotation plane is parallel to the wall surface of the air outlet cavity wall 1116. Optionally, the movable partition 181 is pivotally connected to another cavity wall of the air inlet cavity 11 with respect to the air outlet cavity wall 1116, that is, the outer cavity wall 115 in the previous embodiment. A through hole for the motor rotating shaft to penetrate is provided on this outer cavity wall. The partition driver 182 includes a partition driving motor and a motor rotating shaft. As shown in Figure 22d The partition driving motor is fixed on the outer wall surface of the outer cavity wall. Its motor rotating shaft extends into the interior of the air inlet cavity 11 through the above-mentioned through hole and is fixedly connected to the movable partition 181, so that the partition driving motor can drive the movable partition 181 to rotate through the rotation of the motor.

[0378] In an embodiment, the partition driving motor is of a bidirectional rotation motor type, so as to be able to selectively drive the movable partition 181 to rotate in the clockwise direction or the counterclockwise direction.

[0379] In this embodiment, similar to the partition board shown in the previous embodiment, the movable partition 181 and at least a part of the cavity wall of the air inlet cavity 11 enclose to form a first sub-air inlet cavity 115, and at least another part of the cavity wall of the air inlet cavity 11 enclose to form a second sub-air inlet cavity 116. In this way, when the movable partition 181 rotates around the axis in the air inlet cavity 11, the cavity spaces of the first sub-air inlet cavity 115 and the second sub-air inlet cavity 116 enclosed by it can be changed.

[0380] In an alternative embodiment, the longitudinal ends of the movable partition 181 respectively extend to the two side walls of the corresponding air inlet cavity 11, such as the first side wall 1111 and the second side wall 1112 of the air inlet cavity 11 in this embodiment. Here, the longitudinal ends of the movable partition 181 are respectively defined as the first outer plate end and the second outer plate end. And, the transverse two sides of the movable partition 181 respectively extend to the two side walls of the corresponding air inlet cavity 11, such as the air outlet cavity wall 1116 and the outer cavity wall 1115 of the air inlet cavity 11 in this embodiment. Here, the longitudinal ends and the transverse two side walls of the movable partition 181 are spaced from the corresponding side walls respectively, so as to leave a gap for rotation and avoid the side walls of the air inlet cavity 11 from hindering the rotation of the movable partition 181.

[0381] Combined with the previous embodiment, an outdoor air outlet 114 and an indoor return air inlet 113 are spaced apart on the second side wall 1112. The outdoor air outlet 114 is used to convey outdoor fresh air to the first sub-air inlet cavity 115, and the indoor return air inlet 113 is used to convey indoor polluted air to the second sub-air inlet cavity 116. Optionally, the rotation range of the movable partition 181 is limited such that the longitudinal end corresponding to the second side wall 1112 is always located between the outdoor air outlet 114 and the indoor return air inlet 113, so that the outdoor air outlet 114 always corresponds to the first sub-air inlet cavity 115, and the indoor return air inlet 113 always corresponds to the second sub-air inlet cavity 116.

[0382] Optionally, the air inlet cavity 11 is configured in a cavity form with an overall outer contour being circular or approximately circular, and the rotation axis of the movable partition 181 is arranged at the center of the circle of the air inlet cavity 11. In this way, the longitudinal ends of the movable partition 181 respectively extend to the inner circumferential line of the air inlet cavity 11, and can be driven by the partition driver 182 to rotate along the circumferential direction of the air inlet cavity 11.

[0383] In another alternative, the movable partition 181 is a straight plate or a non-straight plate. Optionally, the non-straight plate includes shapes such as curved and polyline-shaped, or a plate body form spliced by one or more straight lines and / or one or more curves.

[0384] In still other alternative embodiments, the separating member further includes one or more stationary partition plates, which can cooperate with the movable partition plate 181 to jointly define each sub-inlet air chamber and / or the rotation area where the movable partition plate 181 is located.

[0385] Specifically, in combination with Figure 22c shown, the separating member includes a first stationary partition plate 183 and / or a second stationary partition plate 184. Optionally, the first stationary partition plate 183 is disposed on the side wall of the inlet air chamber 11 where the outdoor air inlet 114 and the indoor air return inlet 113 are located, such as Figure 22c the second side wall 1112 in, and extends and is formed towards the inner side of the chamber of the inlet air chamber 11; the first stationary partition plate 183 can function to separate the outdoor air inlet 114 and the indoor air return inlet 113, so as to define the outdoor air inlet 114 within the space range of the first sub-inlet air chamber 115 and the indoor air return inlet 113 within the space range of the second sub-inlet air chamber 116. Another option is that the second stationary partition plate 184 is disposed on the other side wall opposite to the side wall where the first stationary partition plate 183 is located, such as Figure 22c the first side wall 1111 in, and also extends and is formed towards the inner side of the wall of the inlet air chamber 11; the second stationary partition plate 184 can function to separate the first sub-inlet air chamber 115 and the second sub-inlet air chamber 116.

[0386] In this embodiment, the first stationary partition plate 183 and the second stationary partition plate 184 are spaced apart, and the rotation area of the movable partition plate 181 is located in this spaced space.

[0387] In this way, one side surface of the movable partition plate 181, one side surface of the first stationary partition plate 183, one side surface of the second stationary partition plate 184 and at least a part of the chamber wall of the inlet air chamber 11 jointly enclose and form the first sub-inlet air chamber 115; here, at least a part of the chamber wall of the inlet air chamber 11 may include the outer chamber wall 1115, the air outlet chamber wall 1116, the first side wall 1111, the second side wall 1112 and the fourth side wall 1114. And, the other side surface of the movable partition plate 181, the other side surface of the first stationary partition plate 183, the other side surface of the second stationary partition plate 184 and at least another part of the chamber wall of the inlet air chamber 11 jointly enclose and form the second sub-inlet air chamber 116; here, at least a part of the chamber wall of the inlet air chamber 11 may include the outer chamber wall, the air outlet chamber wall 1116, the first side wall 1111, the second side wall 1112 and the third side wall 1113.

[0388] Optionally, in combination with Figure 22cAs shown, the first static partition 183 includes a first straight plate section 1831 and a first arc section 1832. Among them, one longitudinal end of the first straight plate section 1831 is fixedly connected to the second side wall 1112, and the fixed position is between the outdoor air inlet 114 and the indoor air return inlet 113, and the other end extends towards the inner side of the air inlet chamber 11; one end of the first arc section 1832 is fixedly connected to the extending end of the first straight plate section 1831, and the other end is a free end. The first arc section 1832 is integrally formed along the rotation outer peripheral line of the first outer plate end of the movable partition 181, and the first outer plate end of the movable partition 181 is slidably abutted against the inner plate surface of the first arc section 1832. Optionally, the end of the first arc section 1832 connected to the first straight plate section 1831 can continue to extend along the rotation outer peripheral line direction to expand the rotation range of the first outer plate end.

[0389] Similarly, in combination with Figure 22c As shown, the second static partition 184 includes a second straight plate section 1841 and a second arc section 1842. Among them, one longitudinal end of the first straight plate section 1831 is fixedly connected to the first side wall 1111, and the other end extends towards the inner side of the air inlet chamber 11; one end of the second arc section 1842 is fixedly connected to the extending end of the second straight plate section 1841, and the other end is a free end. The second arc section 1842 is integrally formed along the rotation outer peripheral line of the second outer plate end of the movable partition 181, and the second outer plate end of the movable partition 181 is slidably abutted against the inner plate surface of the second arc section 1842. Optionally, the end of the second arc section 1842 connected to the second straight plate section 1841 can continue to extend along the rotation outer peripheral line direction to expand the rotation range of the second outer plate end.

[0390] Optionally, the arc lengths of the first arc section 1832 and the second arc section 1842 are substantially equal.

[0391] In this embodiment, the rotation range of the movable partition 181 is limited to the angular range corresponding to the arc section with the shortest arc length among the first arc section 1832 and the second arc section 1842. This can ensure that the first outer plate end of the movable partition 181 can always abut against the first arc section 1832 during the rotation process, and the second outer plate end can always abut against the second arc section 1842.

[0392] In some embodiments, the fresh air module further includes an air inlet group, and the air inlet group includes a first air inlet and a second air inlet.

[0393] Among them, the first air inlet is opened on the cavity wall corresponding to the first sub-air inlet cavity 115, and is used to introduce outdoor fresh air into the first sub-air inlet cavity 115; optionally, the first air inlet is the outdoor air outlet 114 in the previous embodiment, which is opened on the second side wall 1112 of the air inlet cavity 11. The second air inlet is opened on the cavity wall corresponding to the second sub-air inlet cavity 116, and is used to introduce indoor dirty air into the second sub-air inlet cavity 116; optionally, the second air inlet is the indoor return air outlet 113 in the previous embodiment, which is opened on the second side wall 1112 of the air inlet cavity 11.

[0394] In some other embodiments, the fresh air module further includes an air outlet group, and the air outlet group includes a first air outlet and a second air outlet.

[0395] Optionally, the air outlet group is opened in the fan cavity 12 of the fresh air module, and the first air outlet corresponds to the first sub-air inlet cavity 115, and the second air outlet corresponds to the second sub-air inlet cavity 116. When the fan rotates downward, at least part of the air flow in the first sub-air inlet cavity 115 flows towards the first air outlet, and at least part of the air flow in the second sub-air inlet cavity 116 flows towards the second air outlet. In the embodiment, the first air outlet is used to output outdoor fresh air from the first sub-air inlet cavity 115 to the indoor side; the second air outlet is used to discharge indoor dirty air from the second sub-air inlet cavity 116 to the outdoor side, or to output the filtered indoor dirty air from the second sub-air inlet cavity 116 to the indoor side.

[0396] Optionally, the first air outlet is the first volute air outlet 124, and the second air outlet is the second volute air outlet 125.

[0397] Further optionally, the extended coverage ranges of the first arc segment 1832 and the second arc segment 1842 are defined as: when the movable partition 181 rotates to the first position, the first position is where the first outer plate end of the movable partition 181 is located at the far end of the first arc segment 1832 or the second outer plate end of the movable partition 181 is located at the far end of the second arc segment 1842, as Figure 22e shown, at least part of the cavity space of the second sub-air inlet cavity 116 corresponds to the upstream of the air path of the first volute air outlet 124, and at least part of the cavity space of the first sub-air inlet cavity 115 corresponds to the upstream of the air path of the second volute air outlet 125, so that part of the fresh air flow in the first sub-air inlet cavity 115 will be diverted to the second volute air outlet 125, and then discharged to the outdoor side through the second volute air outlet 125, as Figure 22e the fresh air flow corresponding to the C1 area in; and part of the dirty air flow in the second sub-air inlet cavity 116 will be diverted to the first volute air outlet 124, as Figure 22e the dirty air flow corresponding to the C2 area in.

[0398] Therefore, compared with the fixed partition form in the previous embodiment, a part of the indoor polluted air replaces a part of the outdoor fresh air and is output to the indoor side, and the replaced outdoor fresh air is discharged back to the outdoor side again. Therefore, the amount of outdoor fresh air output to the indoor side when the movable partition 181 is in the first position is reduced.

[0399] Further optionally, the extended coverage ranges of the first arc segment 1832 and the second arc segment 1842 are defined as follows: when the movable partition 181 rotates to the second position, the first position is where the first outer plate end of the movable partition 181 is located at the proximal end of the first arc segment 1832 or the second outer plate end of the movable partition 181 is located at the proximal end of the second arc segment 1842. As Figure 22f shown, all or most of the cavity space of the first sub-inlet chamber 115 corresponds to the middle and upper reaches of the air path of the first volute air outlet 124, and all or most of the cavity space of the second sub-inlet chamber 116 corresponds to the upper reaches of the air path of the second volute air outlet 125, so that all or most of the fresh air flow in the first sub-inlet chamber 115 will be diverted to the first volute air outlet 124, and all or most of the polluted air flow in the second sub-inlet chamber 116 will be diverted to the second volute air outlet 125.

[0400] Optionally, the proximal end of the first arc segment 1832 corresponds to the first volute tongue segment 1242, and / or the proximal end of the second arc segment 1842 corresponds to the second volute tongue segment 1252.

[0401] Therefore, compared with the usage state when the movable partition 181 is in the first position, the amount of outdoor fresh air output to the indoor side when the movable partition 181 is in the second position increases significantly, and its split air supply effect is close to the fixed partition form in the previous embodiment.

[0402] In this way, those skilled in the art can move the movable partition 181 between the first position and the second position according to actual needs and select the actual split air supply position to dynamically adjust the air volume output ratio of the outdoor fresh air and the indoor polluted air. Among them, when the movable partition 181 moves from the first position to the second position, the proportion of fresh air output through the first volute air outlet 124 gradually increases, and the proportion of polluted air output through the second volute air outlet 125 gradually increases. When the movable partition 181 moves from the second position to the first position, the proportion of fresh air output through the first volute air outlet 124 gradually decreases, and the proportion of polluted air output through the second volute air outlet 125 gradually decreases.

[0403] In the above embodiment, the air filter element 14 of the fresh air module 1 is strip-shaped and arranged in the air inlet chamber 11, and it covers at least one of the first air inlet and the second air inlet to filter and purify the air flow input from the first air inlet and / or the second air inlet.

[0404] In Figure 22bIn this case, the air filter element 14 is disposed at a position close to the second side wall 1112 of the air inlet chamber 11 so as to be able to cover both the outdoor air outlet 114 serving as the first air inlet and the indoor air return opening 113 serving as the second air inlet at the same time.

[0405] In some alternative embodiments not shown in the drawings, the separating member includes a movable partition and a partition driver, and the partition driver can drive the movable partition to move horizontally in the air inlet chamber.

[0406] Here, the movable partition is slidably disposed in the air inlet chamber, and its horizontal movement plane is parallel to the wall surface of the air outlet chamber wall. Optionally, one end of the movable partition is provided with a partition drive rack formed by extending horizontally. Correspondingly, the partition driver includes a partition drive motor and a partition drive gear, and the partition drive gear meshes with the partition drive rack, so that the partition drive motor can drive the movable partition to reciprocate longitudinally along the partition drive rack. Here, the longitudinal direction of the partition drive rack is parallel to the longitudinal directions of the first side wall and the second side wall.

[0407] In the embodiment, the partition drive motor is of a bidirectional rotation motor type so as to be able to selectively drive the movable partition to move in the first horizontal direction or the second horizontal direction. Among them, the first direction and the second direction are two opposite directions. Optionally, the first direction is to move towards the side where the third side wall is located, and the second direction is to move towards the side where the fourth side wall is located.

[0408] In the present embodiment, similar to the partition plate shown in the previous embodiment, the movable partition and at least a part of the chamber wall of the air inlet chamber enclose to form a first sub-air inlet chamber, and at least another part of the chamber wall of the air inlet chamber enclose to form a second sub-air inlet chamber.

[0409] Another option is that to ensure the airtightness between the two sub-air inlet chambers during the horizontal movement of the movable partition, the air inlet chamber can be constructed in the form of a square cavity, or in other words, the inside of the air inlet chamber is in the form of a square cavity, and the vertical length of the movable partition is consistent with the vertical length of the air inlet chamber. Thus, during the horizontal sliding movement of the movable partition, its longitudinal ends can always abut against the opposite side walls of the air inlet chamber, reducing the possible air leakage gap during the movement.

[0410] In this way, when the movable partition moves horizontally in the air inlet chamber, it can change the cavity spaces of the first sub-air inlet chamber and the second sub-air inlet chamber it encloses. For example, when the movable partition moves towards the third side wall, the cavity space of the first sub-air inlet chamber and the diameter of its corresponding first sub-air outlet increase, and the cavity space of the second sub-air inlet chamber and the diameter of its corresponding second sub-air outlet decrease. Or, when the movable partition moves towards the fourth side wall, the cavity space of the first sub-air inlet chamber and the diameter of its corresponding first sub-air outlet are smaller, and the cavity space of the second sub-air inlet chamber and the diameter of its corresponding second sub-air outlet increase.

[0411] Combined with the previous embodiments, an outdoor air outlet and an indoor air return opening are spaced apart on the second side wall. The outdoor air outlet is used to convey outdoor fresh air to the first sub-inlet air cavity, and the indoor air return opening is used to convey indoor polluted air to the second sub-inlet air cavity. Optionally, the lateral movement range of the movable partition is defined such that its longitudinal end corresponding to the second side wall is always located between the outdoor air outlet and the indoor air return opening, so that the outdoor air outlet always corresponds to the first sub-inlet air cavity, and the indoor air return opening always corresponds to the second sub-inlet air cavity.

[0412] In the above-mentioned multiple embodiments, the fresh air pipe 20 is connected to the first air inlet for introducing outdoor fresh air into the first inlet air cavity 11; and, the second air duct passage is connected to the second air outlet for discharging indoor polluted air to the outdoor side.

[0413] Optionally, the partition form shown in the previous embodiments for partitioning the air inlet passage 1223 of the impeller 122 can also be applied to the partitioning component in this embodiment, so that during the movement of the partitioning component, it not only dynamically adjusts the cavity space of the sub-inlet air cavity in the inlet air cavity 11, but also can correspondingly dynamically adjust the change in the passage space of the air inlet passage 1223 in the fan cavity 12 to enhance the effect of diverting and supplying air to airflows from different sources.

[0414] Combined with the previous embodiments, the first partition plate 191 of the partitioning component is arranged in the air inlet passage 1223 of the impeller 122, and the second partition plate 192 of the partitioning component is the movable partition plate 181 in this embodiment. The first partition plate 191 is fixed to the movable partition plate 181 and can move together with the movable partition plate 181, as Figure 22g shown. Here, the first partition plate 191 is applied to the scheme of the movable partition plate 181 that moves relative to the inlet air cavity 11 in a rotational manner.

[0415] Optionally, the partition driver 182 can be drivingly connected to the first partition plate 191 or the second partition plate 192, and is used to drive the first partition plate 191 to rotate relative to the fan cavity and the second partition plate 192 to rotate relative to the inlet air cavity 11, so as to change the partitioning position of the first partition plate 191 relative to the air inlet passage 1223 and the partitioning position of the second partition plate 192 (movable partition plate 181) relative to the inlet air cavity 11.

[0416] In some alternative embodiments, at least part of the body of the impeller driver 126 is located in the air inlet passage 1223 of the impeller 122. Correspondingly, the first partition plate 191 is formed with an avoidance groove 1911 for avoiding the impeller driver 126, so as to prevent the first partition plate 191 from interfering with the impeller driver 126 during rotation, as Figure 22h shown.

[0417] Here, the avoidance groove 1911 is spaced from the impeller driver 126, and on the premise of avoiding contact, the gap between the groove edge and the impeller driver 126 is minimized as much as possible to improve the airtight effect and reduce the mixing of the airflows in the two air inlet regions in the air inlet passage 1223 through this gap.

[0418] Combined with the form of the fresh air module 1 shown in the foregoing multiple embodiments, several air exchange modes of the fresh air module 1 of the present application will be described. (Among them, the outdoor fresh air is marked with solid arrows, and the indoor polluted air is marked with dashed arrows)

[0419] Optionally, the working mode of the fresh air module 1 includes the all-fresh-air mode. Among them, the all-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 all-fresh-air mode can supplement the outdoor fresh air with better air quality to the indoor side, thereby improving the air quality on the indoor side.

[0420] In some embodiments, in the all-fresh-air mode, the outdoor fresh air is transported to the indoor side through the fresh air pipe 20, the air inlet cavity 11, the first indoor air outlet 51 and / or the second indoor air outlet 52. Specifically, in the all-fresh-air mode, the impeller 122 rotates at a set rotation direction (such as the first rotation direction); the wind deflector 41 of the control integrated switch part 40 moves to the first sliding position so that the indoor air return opening 113 is blocked, and the first air duct passage 231 and the second air duct passage 232 of the fresh air pipe 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 air blocking block 32 of the control air outlet switching mechanism is located at the first rotation position, so that the second air duct passage 232 is blocked from the switching air cavity, and the fan cavity 12 is in communication with the first indoor air outlet 51 and the second indoor air outlet 52.

[0421] In this way, when the impeller 122 rotates, a negative pressure suction is generated on the side of the air inlet cavity 11, attracting the outdoor fresh air on the outdoor side to flow to the indoor side through the first air duct passage 231 and the second air duct passage 232 respectively, and entering the air inlet cavity 11 through the outdoor air outlet 114 of the module housing 10, as Figure 23a and 23c shown by the arrow of the air flow direction; then, 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 Figure 23b shown by the arrow of the air flow direction.

[0422] Optionally, the operating 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 simultaneously used to transport outdoor fresh air from the outdoor side to the indoor side and indoor polluted air from the indoor side to the outdoor side. The two-way air exchange mode can simultaneously supply outdoor fresh air to the indoor side and discharge indoor polluted air from the indoor side, thereby realizing the synchronous replacement of fresh air and polluted air, and can improve the indoor air quality more quickly.

[0423] In some embodiments, in the two-way air exchange mode, it is divided into two air 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 rotates at a set rotation direction (such as the first rotation direction); the wind deflector 41 of the control integrated switch unit 40 moves to the second sliding position to open the indoor air return opening 113, and the second fresh air outlet pipe opening 2321 of the second air duct channel 232 is blocked; the air blocking block 32 of the air outlet switching mechanism is located at the second rotation position, so that the branch pipe opening 2322 of the second air duct channel 232 is communicated with 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 communicated with the first indoor air outlet 51 and the second air duct channel 232.

[0424] In this way, when the impeller 122 rotates, a negative pressure suction force is generated on the side of the air inlet cavity 11, attracting outdoor fresh air on the outdoor side and indoor polluted air on the indoor side to flow into the air inlet cavity 11 at the same time. Among them, the outdoor fresh air flow path is that outdoor fresh air sequentially passes through the first air duct channel 231, the first sub-air inlet cavity 115, and the fan cavity 12 and is transported to the first indoor air outlet 51, and the outdoor fresh air is sent into the indoor side environment through the first indoor air outlet 51, such as Figure 24a and 24c the air flow direction shown by the arrow in. The indoor exhaust air flow path includes that indoor polluted air sequentially passes through the indoor air return opening 113, the second sub-air inlet cavity 116, the fan cavity 12 and is transported to the second air duct channel 232, and the indoor polluted air is finally discharged to the outdoor side through the second air duct channel 232, such as Figure 24b and 24c the air flow direction shown by the arrow in.

[0425] Optionally, the operating mode of the fresh air module 1 includes a full return air mode. The full return air mode means that the fresh air module 1 is used to transport at least part of the outdoor polluted air from the indoor side to the outdoor side, and / or filter and purify at least part of the indoor polluted air and then send it back to the indoor side. In this mode, the fresh air module 1 does not supply outdoor fresh air to the indoor side. This mode can be applied to the situation where the air quality of the outdoor side environment is also poor, such as haze weather.

[0426] In some embodiments, in the full return air mode, the indoor polluted air is conveyed to the outdoor side via the indoor return air inlet 113, the air inlet chamber 11, the fan chamber 12, and the second air duct passage 232 (sewage air duct), and / or the indoor polluted air is re-sent back to the indoor side via the indoor return air inlet 113, the air inlet chamber 11, the fan chamber 12, and the first indoor air outlet 51. Specifically, in the full return air mode, the impeller 122 rotates at a set rotation direction (such as the first rotation direction); the wind deflector 41 of the control integrated switch unit 40 is moved to the third sliding position to block the outdoor air outlet 114 and open the indoor return air inlet 113; the air blocking block 32 of the air outlet switching mechanism is located at the first rotation position or the second rotation position.

[0427] In this way, when the impeller 122 rotates, a negative pressure suction is generated on the side of the air inlet chamber 11, attracting the indoor polluted air on the indoor side to enter the air inlet chamber 11 through the indoor return air inlet 113 of the module housing 10, and then being split into the first sub-air inlet chamber 115 and the second sub-air inlet chamber 116, as Figure 25a shown by the air flow direction indicated by the arrow in; among them, the indoor polluted air in the first sub-air inlet chamber 115 flows into the fan chamber 12 after being filtered and purified by the air filter element 14, and then is re-sent back to the indoor side environment through the first indoor air outlet 51, as Figure 25b and 25c shown.

[0428] The indoor polluted air in the second sub-air inlet chamber 116 flows into the fan chamber 12 after being filtered and purified by the air filter element 14, and then is conveyed to the switching air chamber. Here, when the air blocking block 32 is located at the first rotation position, this part of the indoor polluted air is re-sent back to the indoor side environment through the second indoor air outlet 52, as Figure 25b shown. When the air blocking block 32 is located at the second rotation position, this part of the indoor polluted air is discharged to the outdoor side environment through the second air duct passage 232, as Figure 25c and 25d shown.

[0429] In some alternative embodiments, the present application further provides an air conditioner 6, including an air conditioner body and the fresh air module 1 in any of the previous embodiments, as Figure 26 and 26a shown.

[0430] Optionally, as shown in combination with Figure 26 and 26a , the type of the air conditioner 6 is a wall-mounted air conditioner. The air conditioner body includes an indoor unit housing 61 and a heat exchange component and a fresh air module 1 disposed inside the indoor unit housing 61. Optionally, the heat exchange component is disposed in the middle and one side space of the indoor unit housing 61, and the fresh air module 1 is disposed in the other side space of the indoor unit housing 61.

[0431] Here, the heat exchange component 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 air return opening and a heat exchange air outlet opening. 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 for heat exchange with the return air flow flowing through the air duct of the indoor heat exchanger 62. The indoor fan is used for rotating to generate the aerodynamic force for driving the air flow to flow through the indoor heat exchange air duct.

[0432] Meanwhile, a first casing air outlet 611, a second casing air outlet 612, and a casing air return opening 613 are further formed in the indoor unit casing 61. Among them, the first indoor air outlet 51 of the fresh air module 1 corresponds to and communicates with the first casing air outlet 611 in position, and the second indoor air outlet 52 corresponds to and communicates with the second casing air outlet 612 in position. In this way, the outdoor fresh air (or the 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 air return opening 113 of the fresh air module 1 corresponds to and communicates with the casing air return opening 613 in position. In this way, the indoor polluted air can flow into the fresh air module 1 through the casing air return opening 613.

[0433] The above description and the drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural and other changes. The embodiments only represent possible variations. Unless explicitly required, the individual components and functions are optional, and the order of operations can vary. Parts and features of some embodiments may be included in or replaced with parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A fresh air duct, characterized in that, it comprises: a duct body having a long cylindrical tube body, and the internal space of the tube body is configured as an air flow channel; an air volume adjustment assembly including a duct partition and a driving device; wherein, the duct partition is movably arranged in the duct body and extends along the length direction of the duct body, and divides the air flow channel into a first duct body channel and a second duct body channel; the driving device is drivingly connected to the duct partition and is configured to controllably drive the duct partition to rotate relative to the duct body to adjust the channel space ratio of the first duct body channel and the second duct body channel.

2. The fresh air duct according to claim 1, characterized in that, in the lateral direction of the duct partition, the duct partition has a first partition side edge and a second partition side edge; wherein, the first partition side edge is rotatably assembled with the inner pipe wall of the duct body and is configured as a swing fulcrum; the second partition side edge is configured as a swing free side; the driving device is configured to controllably drive the duct partition to swing with the first partition side edge as the swing fulcrum to change the channel space ratio of the first duct body channel and the second duct body channel after swinging.

3. The fresh air duct according to claim 2, characterized in that, a fulcrum accommodation groove is recessed on the inner pipe wall of the duct body corresponding to the first partition side edge, and the first partition side edge of the duct partition is embedded in the fulcrum accommodation groove and can rotate relative to the fulcrum accommodation groove; alternatively, the duct body and the first partition side edge of the duct partition are pivotally connected by a partition shaft.

4. The fresh air duct according to claim 3, characterized in that, a secondary partition protruding towards the inside is formed on the inner pipe wall of the duct body, and the secondary partition extends along the length direction of the duct body; the secondary partition and the duct partition cooperate to divide the air flow channel into a first duct body channel and a second duct body channel; wherein, the fulcrum accommodation groove or the partition shaft is arranged on the protruding side edge of the secondary partition so that the first partition side edge of the duct partition is rotatably assembled with the protruding side edge of the secondary partition.

5. The fresh air duct according to any one of claims 2 to 4, characterized in that, a swing accommodation groove is recessed on the inner pipe wall of the duct body corresponding to the second partition side edge; taking the intersection point of the reverse extension line of the connection line between the swing fulcrum and the axis of the duct body and the inner pipe wall of the duct body as the reference point, the swing accommodation groove has a first groove section extending along a first circumferential direction and / or a second groove section extending along a second circumferential direction; the first circumferential direction is on one side of the first duct body channel, and the second circumferential direction is on one side of the second duct body channel and is opposite to the first circumferential direction; the second partition side edge of the duct partition is movably embedded in the swing accommodation groove to be driven by the driving device to swing from the reference point to the first groove section and / or swing from the reference point to the second groove section.

6. The fresh air duct according to claim 5, characterized in that, the groove bottom surface of the swing accommodation groove is configured as an arc surface, and the curvature of the arc surface is adapted to the curvature of the swing track of the second partition side edge.

7. The fresh air duct according to claim 2, characterized in that, On both sides of the swing of the inner pipe wall of the air duct body on the side of the second partition, a stop block is respectively arranged, and the two stop blocks are arranged at intervals to jointly define the swing range of the side of the second partition.

8. The fresh air duct according to claim 2, wherein, the driving device is drivingly connected to the side of the first partition or the side of the second partition.

9. The fresh air duct according to claim 8, wherein, the driving device includes a partition motor and a gear mechanism, and the partition motor is drivingly connected to the side of the second partition through the gear mechanism; wherein, the gear structure includes: a main gear sleeved on the output shaft of the partition motor; a sub-gear, which is configured as a sector gear, wherein a clamping groove for clamping the side of the second partition is formed on the center side of the sector gear, and teeth that can be meshed with the main gear are formed on the circumferential side.

10. A fresh air module, wherein, it includes a module body and the fresh air duct according to any one of claims 1 to 9, and the module body is in air duct communication with the fresh air duct.

11. An air conditioner, wherein, it includes: an air conditioner body; and, the fresh air module according to claim 10, which is assembled on the air conditioner body.

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