Fresh air assembly and fresh air air conditioner

Abstract

The application provides a fresh air assembly and a fresh air conditioner. By starting a fan module and by opening or closing a connecting air port, a second return air port, a first return air port and an air outlet in the fresh air assembly, switching of the fresh air assembly between a fresh air mode, an internal circulation mode and an exhaust mode can be realized. Since the connecting air cavity and the fan inlet air cavity are formed by a flow dividing plate in the air duct cavity, i.e. the connecting air cavity and the fan inlet air cavity are both located in the air duct shell, the flow directions of the air flow entering the fan inlet air cavity from the connecting air cavity are all located in the same plane. In addition, since the air flow directions in the exhaust air cavity and the connecting air cavity are also located in the same plane, i.e. the flow paths of the air flow entering the fan module or being exhausted by the fan module are basically located in the same plane, the structure of the fresh air assembly is more compact, the air volume loss of the air flow when flowing between different air ducts is smaller, and the operation noise of the fresh air assembly is reduced.

Description

Technical Field

[0001] This application relates to the field of air conditioning equipment technology, and more particularly to a fresh air component and a fresh air air conditioner. Background Technology

[0002] A fresh air system is an effective air purification device that circulates indoor air. Fresh air systems with multiple operating modes typically offer options for fresh air mode, internal circulation mode, and exhaust mode.

[0003] When the fresh air system is in exhaust mode, it can expel the stale indoor air to the outside. When the fresh air system is in recirculation mode, it can further process the stale indoor air before expelling it back into the room. When the fresh air system is in fresh air mode, it can introduce fresh outdoor air into the room after sterilization, disinfection, and filtration.

[0004] In existing technologies, fresh air systems with multiple operating modes require multiple internal air ducts to achieve switching between these modes, resulting in a complex duct structure. This causes the airflow to change direction multiple times between different ducts, leading to significant airflow loss. Furthermore, airflow flowing in different directions can easily generate turbulence or impact the inner wall of the fresh air system, which can easily cause considerable operating noise. Summary of the Invention

[0005] This application provides a fresh air component and a fresh air air conditioner to solve the technical problem of large air volume loss in existing fresh air components with multiple operating modes.

[0006] On the one hand, this application provides a fresh air component, including: Fan module; A duct housing connected to the fan module, wherein the duct housing is provided with a fresh air inlet, a first return air inlet and a second return air inlet; The air duct housing is provided with an air duct cavity, and a flow divider is provided in the air duct cavity. The flow divider divides the air duct cavity to form a connecting air cavity and a fan inlet air cavity. The first return air inlet is connected to the fan inlet cavity. The diverter plate is also provided with a connecting air inlet for connecting the fan inlet cavity and the connecting cavity. The connecting air inlet is connected to the connecting cavity and the fan inlet cavity. The two ends of the connecting cavity are respectively connected to the fresh air inlet and the second return air inlet. The air duct housing also has a row of air chambers formed on its side wall, and the second return air outlet is connected to the air outlet of the fan module through the exhaust air chambers. Furthermore, the airflow direction in the exhaust cavity and the airflow direction in the connecting cavity are located on the same plane; The fresh air assembly also includes a valve assembly, which is used to open or close the first return air inlet, the air outlet, the second return air inlet, and the connecting air outlet.

[0007] In one possible implementation of this application, the duct housing includes a first bottom plate, a second bottom plate, and a side plate. The first bottom plate and the second bottom plate are parallel to each other. The side plate is connected end to end and its two sides are respectively connected to the first bottom plate and the second bottom plate. The first bottom plate is provided with an opening for communicating with the air inlet of the fan module. The diverter plate is disposed between the first base plate and the second base plate.

[0008] In one possible implementation of this application, the fan module includes a centrifugal impeller, and the air inlet surface of the centrifugal impeller is formed with a first quadrant, a second quadrant, a third quadrant, and a fourth quadrant in a clockwise direction. On the plane where the air inlet is located, the air outlet is located in the first quadrant, and the extension direction of the connecting air outlet is toward the third quadrant and / or the fourth quadrant.

[0009] In one possible implementation of this application, the air valve assembly includes a first air valve and a second air valve, the first air valve and the second air valve being movably installed on both sides of the connecting air outlet; The first air valve can open either the connecting air vent or the first return air vent while closing the other air vent; the second air valve can open either the connecting air vent or the second return air vent while closing the other air vent.

[0010] In one possible implementation of this application, the connecting air outlet extends toward the fan inlet cavity and forms a rectifier air duct. The two ends of the rectifier air duct are respectively connected to the connecting air cavity and the fan inlet cavity. The first air valve and the second air valve are respectively installed at both ends of the rectifier air duct. In another possible implementation of this application, the first air valve and the second air valve are rotatably installed on both sides of the connecting air outlet. The rotation center lines of the first air valve and the second air valve are parallel to each other and perpendicular to the airflow direction in the connecting air cavity.

[0011] In one possible implementation of this application, the second air valve is a curved panel.

[0012] In one possible implementation of this application, The air valve assembly includes an air outlet valve, which includes an air duct adapter and a lifting damper. One end of the air duct adapter is open, and the other end is connected to the air outlet and the second return air outlet, respectively. When the lifting damper is in the closed state, the inner wall of the fan module near the air outlet forms a "U"-shaped air duct with the inner wall of the lifting damper and the inner cavity of the air duct adapter.

[0013] In one possible implementation of this application, a baffle plate is provided inside the connecting air cavity.

[0014] On the other hand, this application also provides a fresh air conditioner, which includes an air conditioner and a fresh air component as described above, the fresh air component being installed on one side of the air conditioner.

[0015] This application provides a fresh air assembly and a fresh air air conditioner. By activating the fan module and opening or closing the connecting air vent, second return air vent, first return air vent, and air outlet within the fresh air assembly, the assembly can switch between fresh air mode, internal circulation mode, and exhaust mode. Since the connecting air cavity and the fan inlet cavity are formed by a splitter plate within the duct cavity, both are located within the duct housing. Therefore, the airflow direction from the connecting air cavity to the fan inlet cavity is on the same plane. Furthermore, since the airflow direction within the exhaust air cavity and the connecting air cavity is also on the same plane, the airflow path after entering or being exhausted by the fan module is essentially on the same plane. This avoids the need to increase the space occupied by the duct housing due to added exhaust and internal circulation functions, making the fresh air assembly structure more compact. It also minimizes airflow loss when flowing between different ducts and reduces the operating noise of the fresh air assembly. Attached Figure Description

[0016] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0017] Figure 1 An exploded view of the fresh air assembly provided in the embodiments of this application; Figure 2 A schematic diagram of the structure of the fresh air component provided in the embodiments of this application when the fresh air mode or the internal circulation mode is turned on; Figure 3 for Figure 2 A cross-sectional view at point B of the fresh air assembly provided in the embodiment of this application when the internal circulation mode is activated; Figure 4 for Figure 2 A cross-sectional view at point B of the fresh air component provided in the embodiment of this application when the fresh air mode is activated; Figure 5 for Figure 2 A cross-sectional view at point E of the fresh air component provided in the embodiment of this application when the fresh air mode is activated; Figure 6This is a schematic diagram of the structure of the fresh air assembly provided in the embodiments of this application when the exhaust mode is turned on; Figure 7 for Figure 6 Sectional view at point K; Figure 8 for Figure 6 Sectional view at point P; Figure 9 This is a schematic diagram of the structure of the air outlet valve provided in the embodiments of this application; Figure 10 An exploded view of the air duct shell provided in an embodiment of this application.

[0018] Figure label: Fresh air assembly 100, duct housing 110, first base plate 1101, second base plate 1102, side panel 1103, clearance space 1104, duct cavity 111, fresh air inlet 112, first return air inlet 113, second return air inlet 114, diverter plate 115, connecting air outlet 116, connecting air cavity 117, fan inlet cavity 118, exhaust air cavity 119, fan module 120, centrifugal impeller 121. Rotary motor 122, volute 130, air outlet 132, air valve assembly 140, first air valve 141, second air valve 142, air outlet valve 143, duct adapter 144, indoor air outlet 145, connection port 146, lifting damper 147, rectifier duct 150, baffle plate 160, filter module 170, first quadrant Q1, second quadrant Q2, third quadrant Q3, fourth quadrant Q4. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0020] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0024] Please refer to Figures 1 to 5 This application provides a fresh air assembly 100 including: a fan module 120; a duct housing 110 communicating with the fan module 120, the duct housing 110 having a fresh air inlet 112, a first return air inlet 113, and a second return air inlet 114; a duct cavity 111 inside the duct housing 110, a diverter plate 115 inside the duct cavity 111, the diverter plate 115 dividing the duct cavity 111 into a connecting air cavity 117 and a fan inlet air cavity 118; the first return air inlet 113 connecting to the fan inlet air cavity 118, and the diverter plate 115 further having a function for connecting the fan inlet air cavity 118 and the fan inlet air cavity 118. The cavity 117 has a connecting air vent 116, and the two ends of the connecting air cavity 117 are respectively connected to the fresh air vent 112 and the second return air vent 114; wherein, a row of air vents 119 is also formed on the side wall of the air duct housing 110, and the second return air vent 114 is connected to the air outlet 132 of the fan module 120 through the exhaust air vent 119; and the airflow direction in the exhaust air vent 119 and the airflow direction in the connecting air cavity 117 are located on the same plane; the fresh air assembly 100 also includes an air valve assembly 140, which is used to open or close the first return air vent 113, the air outlet 132, the second return air vent 114 and the connecting air vent 116.

[0025] It should be noted that the fresh air assembly 100 provided in this application embodiment is applicable to a fresh air unit (not shown in the figure) or a fresh air air conditioner (not shown in the figure). The fan module 120 includes a fan impeller, a rotating motor 122, and a volute 130, with the duct housing 110 and the volute 130 connected in sequence. The volute 130 may be composed of two volute housings (not shown in the figure), and the fan impeller and the rotating motor 122 are installed inside the volute 130.

[0026] The air duct cavity 111 is formed inside the air duct housing 110, and the volute 130 has an air supply cavity and an air outlet cavity. The impeller and the rotating motor 122 are located inside the air supply cavity. The air duct cavity 111 is connected to the air supply cavity and the air outlet cavity respectively. The fresh air inlet 112, the first return air inlet 113 and the second return air inlet 114 are provided on the air duct housing 110 and are all connected to the air duct cavity 111. The air outlet 132 is provided on the volute 130 and is connected to the air outlet cavity.

[0027] It should also be noted that after the fan module 120 is started, the rotating motor 122 drives the impeller to rotate and drives the airflow, which in turn drives the airflow in the connecting air cavity 117, the fan inlet air cavity 118, and the exhaust air cavity 119. The direction of airflow in the above three cavities is the airflow direction. Moreover, the airflow direction in the connecting air cavity 117 and the exhaust air cavity 119 is only affected and guided by the shape of the cavity to change the airflow direction. Therefore, the airflow direction in the above two cavities is parallel to a plane. It should be noted that since the fan inlet air cavity 118 is connected to the air supply cavity of the fan module 120, some of the airflow entering the fan inlet air cavity 118 will be deflected towards the air supply cavity. A small part of the airflow flowing to the area near the impeller will be deflected more significantly. Therefore, the airflow direction in the fan inlet air cavity 118 mentioned above refers only to the airflow direction when the air enters the fan inlet air cavity 118 through the first return air inlet 113 or the connecting air inlet 116. It should also be noted that, since the air supply cavity of the fan module 120 is connected to the second return air inlet 114, the airflow in the air supply cavity will be deflected into the exhaust air cavity 119. This may result in a small portion of the airflow in the exhaust air cavity 119 and near the air supply cavity having a different airflow direction than the area of ​​the exhaust air cavity 119 near the second return air inlet 114. Therefore, the airflow direction in the exhaust air cavity 119 mentioned above refers only to the flow direction of the airflow entering the connecting air cavity 117 through the second return air inlet 114 after passing through the exhaust air cavity 119.

[0028] By activating the fan module 120 and by opening or closing the connecting air vent 116, the second return air vent 114, the first return air vent 113, and the air outlet 132 within the fresh air component 100, the fresh air component 100 can switch between fresh air mode, internal circulation mode, and exhaust mode. Since the connecting air cavity 117 and the fan inlet air cavity 118 are formed by the split plate 115 in the air duct cavity 111, that is, both the connecting air cavity 117 and the fan inlet air cavity 118 are located inside the air duct housing 110, the flow direction of the airflow from the connecting air cavity 117 to the fan inlet air cavity 118 is on the same plane. In addition, since the airflow direction in the exhaust air cavity 119 and the airflow direction in the connecting air cavity 117 are also on the same plane, that is, after the airflow enters the fan module 120 or is discharged by the fan module 120, its flow path is basically on the same plane. This avoids the need to increase the space occupied by the air duct housing 110 due to the increase of exhaust and internal circulation functions, making the structure of the fresh air component 100 more compact. At the same time, it also makes the airflow loss when the airflow flows between different air ducts smaller and reduces the operating noise of the fresh air component 100.

[0029] Please refer to Figures 2 to 4 , Figure 6 , Figure 7 and Figure 10Specifically, the operating status of the fresh air assembly 100 under different operating modes is as follows: When the fresh air assembly 100 is in fresh air mode, the connecting air vent 116 and the air outlet 132 are opened, and the first return air vent 113 and the second return air vent 114 are closed. Outdoor fresh air enters the connecting air chamber 117 through the fresh air vent 112, and then enters the fan inlet chamber 118 through the connecting air vent 116, finally flowing out to the room from the air outlet 132 of the fan module 120; When the fresh air assembly 100 is in internal circulation mode, the first return air vent 113 and the air outlet 132 are opened, and the connecting air vent 116 is closed. Air inlet 116 and second return air inlet 114 allow indoor stale air to enter the connecting air chamber 117 from the first return air inlet 113 and flow out to the room from the air outlet 132 of the fan module 120. When the fresh air assembly 100 is in exhaust mode, the first return air inlet 113 and the second return air inlet 114 are opened, and the connecting air inlet 116 and the air outlet 132 are closed. Indoor stale air enters the connecting air chamber 117 from the first return air inlet 113 and flows out to the exhaust air chamber 119 through the air outlet 132 of the fan module 120. Finally, it flows out to the outside from the fresh air inlet 112 through the connecting air chamber 117.

[0030] In some embodiments, the duct housing 110 includes a first base plate 1101, a second base plate 1102, and a side panel 1103. The first base plate 1101 and the second base plate 1102 are parallel to each other. The side panel 1103 is connected end to end and its two sides are respectively connected to the first base plate 1101 and the second base plate 1102. The first base plate 1101 is provided with an opening for the air inlet of the ventilation module 120 (not shown in the figure). The diverter plate 115 is disposed between the first base plate 1101 and the second base plate 1102.

[0031] It should be noted that both the first base plate 1101 and the second base plate 1102 are flat plates, and the side panels 1103 are connected end to end to close the space between the parallel first base plate 1101 and the second base plate 1102, forming a cylindrical air duct shell 110.

[0032] The duct housing 110 is cylindrical, making the duct cavity 111 formed within it also cylindrical. By forming a connecting cavity 117, a fan inlet cavity 118, and an exhaust cavity 119 within the duct cavity 111, the airflow flows within a cylindrical cavity, whether between the connecting cavity 117 and the fan inlet cavity 118 or the connecting cavity 117 and the exhaust cavity 119. Furthermore, the thickness of the three cavities (connecting cavity 117, fan inlet cavity 118, and exhaust cavity 119) is consistent perpendicular to the airflow direction, reducing protrusions between the three cavities and allowing for smooth transitions when airflow flows within different cavities.

[0033] Furthermore, in other embodiments, the duct housing 110 may also be a square housing or an irregularly shaped housing, etc., without further limitation.

[0034] In some embodiments, the fan module 120 includes a centrifugal impeller 121, the air inlet surface of the centrifugal impeller 121 being sequentially formed with a first quadrant Q1, a second quadrant Q2, a third quadrant Q3, and a fourth quadrant Q4 in a clockwise direction; on the plane where the air inlet surface is located, the air outlet 132 is located in the first quadrant Q1, and the extension direction of the connecting air outlet 116 is toward the third quadrant Q3 and / or the fourth quadrant Q4.

[0035] It should be noted that the air intake direction of the centrifugal impeller 121 is the direction in which air flows from the air duct cavity 111 to the centrifugal impeller 121, and the plane perpendicular to the air intake direction is the air intake surface.

[0036] Specifically, the impeller provided in this embodiment is a centrifugal impeller 121, therefore the fan module 120 is a centrifugal fan.

[0037] It should be noted that after the airflow enters the rotating centrifugal impeller 121, it is thrown out under the action of centrifugal force, flows along the volute 130, and exits from the outlet 132. Therefore, due to the rapid flow of air out of the outlet 132, the air pressure of the centrifugal fan will decrease rapidly in the area near the outlet 132 and in the area corresponding to the extension direction of the outlet 132. This area has a low attraction for airflow, i.e., a low-pressure area, while the remaining area is a high-pressure area. For the corresponding embodiment in this application, please refer to... Figure 4 Since the air outlet 132 is located on the upper side and extends upward, the air inlet surface of the centrifugal fan 121 is defined sequentially in a clockwise direction as the first quadrant Q1, the second quadrant Q2, the third quadrant Q3 and the fourth quadrant Q4. Among them, the centrifugal fan has a lower attraction to the airflow in the first quadrant Q1 and the second quadrant Q2.

[0038] By directing the airflow from the connecting air outlet 116 toward the third quadrant Q3 and / or the fourth quadrant Q4, that is, guiding the airflow that enters the fan inlet chamber 118 through the connecting air chamber 117 toward the high-pressure area of ​​the centrifugal impeller 121, the air intake volume of the fan module 120 can be increased.

[0039] Specifically, the diverter plate 115 is an arc-shaped plate.

[0040] When the diverter plate 115 is an arc-shaped plate, the connecting wind direction is an arc-shaped cavity, which facilitates the airflow to the third quadrant Q3 and / or the fourth quadrant Q4, and can also effectively avoid airflow loss.

[0041] Furthermore, in other embodiments, the diverter plate 115 may also be a planar plate, etc., without further limitation.

[0042] In some embodiments, the damper assembly 140 includes a first damper 141 and a second damper 142, which are respectively movably installed on both sides of the connecting air outlet 116. The first damper 141 can open either the connecting air outlet 116 or the first return air outlet 113 while closing the other air outlet. The second damper 142 can open either the connecting air outlet 116 or the second return air outlet 114 while closing the other air outlet.

[0043] Understandably, when the fresh air assembly 100 is in fresh air mode, the connecting vent 116 connects the connecting air chamber 117 and the fan inlet chamber 118, allowing fresh air to enter the fan module 120. However, when the fresh air assembly 100 is in exhaust mode, the connecting vent 116 needs to be closed. Due to the different airflow velocities in the connecting air chamber 117 and the fan inlet chamber 118, a pressure difference may exist between them, which could cause the damper to fail to completely close the connecting vent 116.

[0044] By setting both the first air valve 141 and the second air valve 142 on both sides of the connecting air outlet 116, on the one hand, by adjusting the first air valve 141 and the second air valve 142, different modes of the fresh air assembly 100 can be switched; on the other hand, when the fresh air assembly 100 is in exhaust mode, both the first air valve 141 and the second air valve 142 close the connecting air outlet 116. The airflow entering the fan inlet chamber 118 will press the first air valve 141 toward the connecting air outlet 116, and the airflow through the connecting air chamber 117 will press the second air valve 142 toward the connecting air outlet 116, thereby achieving simultaneous closure of the connecting air outlet 116 by the first air valve 141 and the second air valve 142, improving the airtightness of the fresh air assembly 100 in exhaust mode.

[0045] In addition, when the first air valve 141 closes the connecting air outlet 116 and the second air valve 142 closes the second return air outlet 114, outdoor air can be prevented from entering the fan inlet chamber 118 and the exhaust chamber 119, effectively preventing the phenomenon of air "backflow" during windy weather.

[0046] In some embodiments, the connecting air outlet 116 extends 118 toward the fan inlet cavity and forms a rectifier air duct 150. The two ends of the rectifier air duct 150 are respectively connected to the connecting air cavity 117 and the fan inlet cavity 118. The first air valve 141 and the second air valve 142 are respectively installed at the two ends of the rectifier air duct 150.

[0047] It should be noted that, since the connecting air cavity 117 is an arc-shaped cavity, the airflow direction is inconsistent at different positions of the connecting air cavity 117, which makes it easy for the airflows flowing out of the connecting air cavity 117 to interfere with each other. This causes the airflow entering the fan inlet cavity 118 through the connecting air cavity 117 to become turbulent, reducing the air intake volume of the fan module 120.

[0048] The diverter plate 115, together with the inner wall of the air duct housing 110, forms a regular columnar cavity, namely the rectifier air duct 150. After the airflow passes through the rectifier air duct 150 from the connecting air cavity 117, some airflows flowing in different directions will change their flow direction under the action of the rectifier air duct 150, so that most of the airflow will flow in the direction of extension of the rectifier air duct 150. That is, the rectifier air duct 150 can constrain and adjust the airflow passing through it, so that the flow direction of the airflow passing through the rectifier air duct 150 is close to uniform, avoiding the turbulence of the airflow passing through the connecting air duct 116 and improving the air intake of the fan module 120.

[0049] For example, the rectifier duct 150 is cylindrical.

[0050] On the one hand, the cross-sectional shape of the rectifier duct 150 is the same as that of the connecting air cavity 117, so that the airflow can smoothly enter the rectifier duct 150 from the connecting air cavity 117. On the other hand, the inner surface of the rectifier duct 150 is smooth and without protrusions, which can effectively avoid abrupt changes in the direction of the airflow when it flows in the rectifier duct 150, thereby improving the rectification efficiency and reducing airflow loss.

[0051] In some embodiments, the first air valve 141 and the second air valve 142 are rotatably mounted on both sides of the connecting air outlet 116; the rotation center lines of the first air valve 141 and the second air valve 142 are parallel to each other and perpendicular to the airflow direction in the connecting air cavity 117.

[0052] As can be seen from the above, since the airflow directions connecting the air cavity 117, the fan inlet air cavity 118 and the exhaust air cavity 119 are also located on the same plane, it can effectively reduce the situation where the airflow flows in multiple directions in the space.

[0053] In this embodiment, the first air valve 141 and the second air valve 142 are rotatably installed within the duct housing 110, and the rotation center lines of both the first air valve 141 and the second air valve 142 are perpendicular to the airflow direction within the connecting air cavity 117. That is, both the first air valve 141 and the second air valve 142 rotate along the airflow direction, reducing the air-receiving area of ​​the first air valve 141 and the second air valve 142. This makes it easier to open or close the first air valve 141 and the second air valve 142, improving their switching efficiency; and it also reduces the area occupied by the first air valve 141 and the second air valve 142 within the duct cavity 111, making the fresh air assembly 100 more compact.

[0054] In some embodiments, the second air valve 142 is a curved panel.

[0055] It is understandable that, since the second air valve 142 is used to open or close the connecting air vent 116 and the second return air vent 114, and the extension direction of the connecting air vent 116 is towards the third quadrant Q3 and / or the fourth quadrant Q4, when the fresh air assembly 100 is in fresh air mode, that is, when the outdoor fresh air enters the fan inlet chamber 118 through the connecting air chamber 117, the airflow will also pass through the second air valve 142.

[0056] By setting the curved panel of the second air valve 142, the airflow can be made smoother when passing through the second air valve 142, thereby improving the air intake efficiency of the fan module 120.

[0057] Alternatively, the second air valve 142 can also be a flat plate, which can better fit the connecting air outlet 116 and the second return air outlet 114 to improve the airtightness of the second air valve 142 to the connecting air outlet 116 and the second return air outlet 114. No further limitations are made here.

[0058] Please refer to Figures 1 to 3 , Figure 8 and Figure 9 In some embodiments, the air valve assembly 140 includes an air outlet valve 143, which includes an air duct adapter 144 and a lifting air damper 147. One end of the air duct adapter 144 is open, and the other end is connected to the air outlet 132 and the second return air outlet 114 respectively. When the lifting air damper 147 is in the closed state, the inner wall of the fan module 120 near the air outlet 132 forms a "U"-shaped air duct with the inner wall of the lifting air damper 147 and the inner cavity of the air duct adapter 144.

[0059] The air outlet 132 and the second return air outlet 114 are connected by the air duct adapter 144, and the lifting damper 147 opens or closes the opening at the other end of the air duct adapter 144. The fan module 120 and the air outlet valve 143 together form a U-shaped air duct. The cavity containing the lifting damper 147 and the cavity connecting the air outlet 132 and the second return air outlet 114 can be integrated into one unit, which simplifies the structure of the fresh air assembly 100. The U-shaped air duct can improve the airflow efficiency and reduce aerodynamic noise.

[0060] Furthermore, the duct adapter 144 forms an indoor air vent 145 and a connection port 146. The air outlet 132 is connected to the connection port 146 through the indoor air vent 145. The duct adapter 144 extends downward along the outer edge of the connection port 146 until it is connected to the second return air vent 114 and forms an exhaust air chamber 119. The lifting damper 147 is slidably installed in the exhaust air chamber 119. The lifting damper 147 is used to open or close the indoor air vent 145.

[0061] By setting up a duct adapter 144, and forming an indoor air outlet 145 and a connection port 146 on the duct adapter 144, the connection outlet 116 can be connected to the air outlet 132 through the duct adapter 144; and the connection port 146 further extends to connect with the second return air outlet 114 and form an exhaust air cavity 119, that is, the connection structure of the air outlet 132 and the exhaust air cavity 119 and the exhaust air cavity 119 are all integrated on the duct adapter 144, simplifying the structure of the fresh air component 100. Furthermore, by sliding the lifting damper 147 within the exhaust cavity 119, the shape of the exhaust cavity 119 can be optimized, making it a regular columnar shape, thereby allowing the airflow direction within the exhaust cavity 119 to be on the same plane as the airflow direction within the connecting cavity 117. On the other hand, since the duct housing 110 has a clearance space 1104 formed on the side of the second return air inlet 114 away from the duct cavity 111, namely the second bottom plate 1102 and the side panel 1... 103 surrounds only the two sides of the rectangular second return air inlet 114 and is used for the installation and positioning of the duct adapter 144; in particular, the portion of the duct adapter 144 extending downward along the outer edge of the connection port 146 can be installed in the clearance space 1104 and form the exhaust air cavity 119, which avoids the second base plate 1102 and the side plate 1103 from repeatedly surrounding the second return air inlet 114, improves the utilization rate of the second return air inlet 114, and makes the exhaust valve 143 structure more compact.

[0062] In some embodiments, a baffle 160 is provided inside the connecting air cavity 117.

[0063] By setting the baffle 160, the airflow distribution through the connecting air cavity 117 can be made more uniform and the airflow flow more stable, reducing the generation of turbulence in the connecting air cavity 117, improving the air intake or exhaust efficiency of the fresh air assembly 100, and reducing operating noise.

[0064] Preferably, the baffle 160 can be disposed at the end of the connecting air cavity 117 near the fresh air inlet 112.

[0065] It can divert the fresh air entering the air module, effectively increasing the air intake volume of the fresh air module.

[0066] Specifically, the spoiler 160 is an arc-shaped plate.

[0067] In some embodiments, the fresh air assembly 100 is provided with a filter module 170.

[0068] By installing a filter module 170 inside the fresh air assembly 100, the air quality passing through the fan module 120 can be improved, resulting in a better user experience.

[0069] This application also provides a fresh air conditioner (not shown in the figure), which includes an air conditioner (not shown in the figure) and a fresh air assembly 100 as described above, the fresh air assembly 100 being installed on one side of the air conditioner. Since this fresh air conditioner has the aforementioned fresh air assembly 100, it has all the same beneficial effects, and will not be described again here.

[0070] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0071] The above provides a detailed description of a fresh air component 100 and a fresh air air conditioner provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A fresh air assembly, characterized in that, include: Fan module; A duct housing connected to the fan module, wherein the duct housing is provided with a fresh air inlet, a first return air inlet and a second return air inlet; The air duct housing is provided with an air duct cavity, and a flow divider is provided in the air duct cavity. The flow divider divides the air duct cavity to form a connecting air cavity and a fan inlet air cavity. The first return air inlet is connected to the fan inlet cavity, and the diverter plate is also provided with a connecting air inlet for connecting the fan inlet cavity and the connecting air cavity. The two ends of the connecting air cavity are respectively connected to the fresh air inlet and the second return air inlet. The side wall of the air duct housing is also formed with a row of air chambers, and the second return air outlet is connected to the air outlet of the fan module through the exhaust air chambers. Furthermore, the airflow direction in the exhaust cavity and the airflow direction in the connecting cavity are located on the same plane; The fresh air assembly also includes a damper assembly, which is used to open or close the first return air inlet, the air outlet, the second return air inlet, and the connecting air outlet; The air valve assembly includes a first air valve and a second air valve, which are respectively movably installed on both sides of the connecting air outlet; The first air valve can open either the connecting air vent or the first return air vent while closing the other air vent; the second air valve can open either the connecting air vent or the second return air vent while closing the other air vent.

2. The fresh air assembly of claim 1, wherein, The air duct housing includes a first base plate, a second base plate, and a side panel. The first base plate and the second base plate are parallel to each other. The side panel is connected end to end and its two sides are respectively connected to the first base plate and the second base plate. The first base plate is provided with an opening for the air inlet that connects to the fan module. The diverter plate is disposed between the first base plate and the second base plate.

3. The fresh air assembly of claim 1, wherein, The fan module includes a centrifugal impeller, and the air inlet surface of the centrifugal impeller is formed in a clockwise direction with a first quadrant, a second quadrant, a third quadrant, and a fourth quadrant. On the plane where the air inlet is located, the air outlet is located in the first quadrant, and the extension direction of the connecting air outlet is toward the third quadrant and / or the fourth quadrant.

4. The fresh air assembly of claim 1, wherein, The connecting air outlet extends toward the fan inlet cavity and forms a rectifier air duct. The two ends of the rectifier air duct are respectively connected to the connecting air cavity and the fan inlet cavity. The first air valve and the second air valve are respectively installed at the two ends of the rectifier air duct.

5. The fresh air assembly as described in claim 1, characterized in that, The first air valve and the second air valve are rotatably installed on both sides of the connecting air outlet; The rotation center lines of the first air valve and the second air valve are parallel to each other and perpendicular to the airflow direction in the connecting air cavity.

6. The fresh air assembly as described in claim 1, characterized in that, The second air valve has a curved panel.

7. The fresh air assembly as described in claim 1, characterized in that, The air valve assembly includes an air outlet valve, which includes an air duct adapter and a lifting damper. One end of the air duct adapter is open, and the other end is connected to the air outlet and the second return air outlet, respectively. When the lifting damper is in the closed state, the inner wall of the fan module near the air outlet forms a "U"-shaped air duct with the inner wall of the lifting damper and the inner cavity of the air duct adapter.

8. The fresh air assembly as described in claim 1, characterized in that, The connecting air cavity is equipped with a baffle plate.

9. A fresh air conditioning system, characterized in that, The fresh air conditioning unit includes an air conditioner and a fresh air assembly as described in any one of claims 1-8, wherein the fresh air assembly is installed on one side of the air conditioner.

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