Fresh air module and air conditioner

Abstract

This application relates to a fresh air module and an air conditioner. The fresh air module includes a housing and a first displacement module. The housing includes an upper air duct and a lower air duct. The upper air duct includes a fresh air duct, a first circulating air duct and a second circulating air duct spaced apart on either side of the fresh air duct, and a common air duct located at one end of each of the fresh air duct, the first circulating air duct, and the second circulating air duct. The common air duct is constantly connected to the fresh air duct. The first displacement module is located between the common air duct and the fresh air duct, the first circulating air duct, and the second circulating air duct. The first displacement module includes a drive motor, a gear module, a first sliding plate, and a second sliding plate. The drive motor drives the gear module to rotate, and the gear module drives the first sliding plate and the second sliding plate to move respectively, so that the first sliding plate opens and closes a first connection between the first circulating air duct and the common air duct during movement, and so that the second sliding plate opens and closes a second connection between the second circulating air duct and the common air duct during movement.

Description

Technical Field

[0001] This application relates to the field of air conditioning, and in particular to a fresh air module and an air conditioner. Background Technology

[0002] As people's demands for quality of life continue to rise, indoor air quality is receiving increasing attention. As a key component of modern air conditioning systems, the importance of fresh air systems is becoming increasingly prominent. By introducing fresh outdoor air and expelling stale indoor air, fresh air systems can significantly improve indoor air quality, effectively enhancing user comfort and health. Today, the functions of fresh air modules in air conditioning systems are becoming increasingly diverse, not only achieving basic air exchange but also requiring the ability to switch between multiple modes such as ventilation, purification, heating, and cooling.

[0003] In existing technologies, multiple sets of dampers are typically used to control the airflow direction and flow distribution to achieve the aforementioned functions. Specifically, the opening and closing of the dampers enables the switching of functions such as fresh air introduction, return air regulation, and exhaust air. However, this traditional design has many drawbacks: First, the large number of dampers makes the system structure extremely complex, increasing the difficulty of installation and commissioning; second, the increased number of dampers directly drives up hardware costs, and the subsequent maintenance costs of the system also increase accordingly; third, as mechanical components, dampers are prone to wear and jamming during long-term use, seriously affecting the stability and service life of the system; fourth, the presence of multiple dampers increases the airflow resistance of the system, which may reduce the overall efficiency of the air conditioning system and thus increase energy consumption.

[0004] Therefore, how to reduce the number of air valves in an air conditioning system while still achieving flexible switching between multiple functions has become a pressing technical challenge. Solving this problem is of significant technical importance and has broad market application value for reducing system complexity and cost, and improving system reliability and energy efficiency. Utility Model Content

[0005] This application provides a fresh air module and an air conditioner to solve the technical problem in the prior art of how to reduce the number of air valves in an air conditioning system while achieving flexible switching of multiple functions.

[0006] This utility model provides a fresh air module, including: a housing and a first displacement module. The housing includes an upper air duct and a lower air duct, which are connected to the lower air duct via a fan. The upper air duct includes a fresh air duct, a first circulating air duct and a second circulating air duct spaced apart on both sides of the fresh air duct, and a common air duct located at one end of the fresh air duct, the first circulating air duct, and the second circulating air duct. The common air duct is constantly connected to the fresh air duct. The first displacement module is located between the common air duct and the fresh air duct, the first circulating air duct, and the second circulating air duct. The first displacement module includes a drive motor, a gear module, a first sliding plate, and a second sliding plate. The drive motor drives the gear module to rotate, and the gear module drives the first sliding plate and the second sliding plate to move respectively, so that the first sliding plate opens and closes a first connection between the first circulating air duct and the common air duct during movement, and the second sliding plate opens and closes a second connection between the second circulating air duct and the common air duct during movement.

[0007] The gear module includes a first gear, a second gear, and a third gear. The first gear and the second gear are coaxially and intermittently connected via a first drive shaft, which is driven by a drive motor. The first gear meshes with the teeth of the first slide plate, and the rotation of the first gear drives the movement of the first slide plate. The third gear meshes with the external teeth of the second gear and is also meshed with the teeth of the second slide plate. The rotation of the third gear drives the movement of the second slide plate, so that the first and second slide plates can open and close synchronously.

[0008] The third gear is coaxially connected to the second drive shaft, and the second drive shaft passes through the third gear and is fixedly connected to the connecting plate of the drive motor.

[0009] The first slide plate includes a first hollow portion and a first solid portion. The first solid portion is used to cover the first connection opening between the first circulating air duct and the common air duct. The inner wall of the first hollow portion has a first continuous tooth structure, which is used to mesh with the first gear teeth. The second slide plate includes a second hollow portion and a second solid portion. The second solid portion is used to cover the second connection opening between the second circulating air duct and the common air duct. The inner wall of the second hollow portion has a second continuous tooth structure, which is used to mesh with the third gear teeth.

[0010] The first inner bottom wall of the first hollow portion has the first continuous toothed structure, and the first inner bottom wall is constructed as a linear structure; the second inner bottom wall of the second hollow portion has the second continuous toothed structure, and the second inner bottom wall is constructed as a linear structure.

[0011] The lower air duct has a first air outlet, a second air outlet, and a fresh air exhaust outlet. The fresh air exhaust outlet is located between the first air outlet and the second air outlet, and the first air outlet and the second air outlet are arranged opposite to each other. The fresh air module also includes a second displacement module, which is installed in the lower air duct and is used to open and close the first air outlet, the second air outlet, and the fresh air exhaust outlet during movement.

[0012] The second shifting module includes a main baffle, a first secondary baffle, and a second secondary baffle. The main baffle has a third hollow portion and a third solid portion and a fourth solid portion located on both sides of the third hollow portion. The first secondary baffle is located in the third solid portion, and the second secondary baffle is located in the fourth solid portion.

[0013] The fresh air module also includes a telescopic rod, which is installed on one side of the housing where the lower air duct is located. The telescopic rod is connected to one of the first sub-baffle or the second sub-baffle and is used to push the second displacement module to move, so as to adjust the opening and closing of the first air outlet, the second air outlet and the fresh air exhaust outlet.

[0014] The telescopic rod drives the second displacement module to move; in the first state, the first auxiliary baffle is used to block the second air outlet, the second auxiliary baffle is used to block the fresh air exhaust outlet, and the third hollow part of the main baffle coincides with the first air outlet; in the second state, one of the third solid part or the fourth solid part is used to block the fresh air exhaust outlet, the first auxiliary baffle is used to block the second air outlet, or the second auxiliary baffle is used to block the first air outlet.

[0015] The first sub-baffle includes a first sub-baffle structure and a second sub-baffle structure that is parallel to and connected to the first sub-baffle structure; the area of ​​the first sub-baffle structure is smaller than the area of ​​the second sub-baffle structure, and the second sub-baffle structure is used to completely block the second air outlet; the second sub-baffle includes a third sub-baffle structure and a fourth sub-baffle structure that is parallel to and connected to the third sub-baffle structure; the area of ​​the third sub-baffle structure is smaller than the area of ​​the fourth sub-baffle structure, and the fourth sub-baffle structure is used to completely block the fresh air exhaust outlet.

[0016] This utility model also provides an air conditioner, including the above-mentioned fresh air module and an indoor unit, wherein the indoor unit is matched and applied with the fresh air module to form an internal circulation mode and / or an air intake internal circulation mode.

[0017] The technical solutions provided in this application have the following advantages compared with the prior art:

[0018] The fresh air module and air conditioner provided in this application embodiment can form two layered air ducts within the fan casing. By adding a first displacement module, which includes a drive motor, a gear module, a first sliding plate, and a second sliding plate, the drive motor drives the gear module to rotate. The gear module then moves the first and second sliding plates respectively. During movement, the first sliding plate opens and closes the first connection between the first circulating air duct and the shared air duct, and the second sliding plate opens and closes the second connection between the second circulating air duct and the shared air duct. Thus, a single motor can simultaneously control the movement of both sliding plates, thereby controlling the opening and closing of both the first and second connections between the circulating and shared air ducts. In other words, a solution using one motor to control two air valves can be achieved, structurally reducing the number of motors, drive circuits, sensors, and other related components, thereby lowering the overall cost. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0022] Figure 1 A schematic diagram of the upper air duct structure of the fresh air module provided in this application embodiment;

[0023] Figure 2A schematic diagram of the structure of the upper air duct of the fresh air module provided in the embodiment of this application, showing the installation of the first displacement module.

[0024] Figure 3 for Figure 2 A partial structural diagram of the intermediate gear installation;

[0025] Figure 4 for Figure 2 Schematic diagram of the structure in the middle blocking state;

[0026] Figure 5 for Figure 2 A schematic diagram of the structure in the open state;

[0027] Figure 6 for Figure 2 A schematic diagram showing the structure in which the circulating air ducts on both sides, the shared air duct, and the fresh air duct are simultaneously connected;

[0028] Figure 7 This is a schematic diagram of the structure of the second shifting module;

[0029] Figure 8 Schematic diagram of the structure for installing the second displacement module in the lower air duct. Figure 1 ;

[0030] Figure 9 for Figure 8 A schematic diagram of the axial side structure;

[0031] Figure 10 Schematic diagram of the structure for installing the second displacement module in the downwind duct. Figure 2 ;

[0032] Figure 11 for Figure 10 A schematic diagram of the axial side structure;

[0033] Figure 12 Schematic diagram of the structure for installing the second displacement module in the downwind duct. Figure 3 .

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Housing; 11. Upper air duct; 12. Lower air duct; 13. Fan; 111. Fresh air duct; 112. First circulating air duct; 113. Second circulating air duct; 114. Common air duct; 2. First shifting module; 21. Drive motor; 22. Gear module; 221. First gear; 222. Second gear; 223. Third gear; 224. First drive shaft; 225. Second drive shaft; 23. First sliding plate; 231. First hollowed-out part; 231A. First inner bottom wall; 2311. First continuous tooth structure; 232. First solid part; A1. First connecting port; 24. 2. Slide plate; 241. Second hollow part; 241A. Second inner bottom wall; 2411. Second continuous toothed structure; 242. Second solid part; A2. Second connecting port; 121. First air outlet; 122. Second air outlet; 123. Fresh air exhaust outlet; 3. Second shifting module; 31. Main baffle; 311. Third hollow part; 312. Third solid part; 313. Fourth solid part; 32. First auxiliary baffle; 321. First sub-baffle structure; 322. Second sub-baffle structure; 33. Second auxiliary baffle; 331. Third sub-baffle structure; 332. Fourth sub-baffle structure; 4. Telescopic rod. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. 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.

[0038] For ease of description, spatial relative terms may be used in this text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptions used in this text have been explained accordingly.

[0039] Currently, multiple sets of dampers are typically used to control the direction and flow distribution of airflow. Specifically, the opening and closing of the dampers switches between functions such as fresh air introduction, return air regulation, and exhaust air. However, this traditional design has many drawbacks: First, the large number of dampers makes the system structure extremely complex, increasing the difficulty of installation and commissioning; second, the increased number of dampers directly drives up hardware costs, and the subsequent maintenance costs of the system also increase accordingly; third, as mechanical components, dampers are prone to wear and jamming during long-term use, seriously affecting the stability and service life of the system; fourth, the presence of multiple dampers increases the airflow resistance of the system, which may reduce the overall efficiency of the air conditioning system and thus increase energy consumption.

[0040] Therefore, how to reduce the number of air valves in an air conditioning system while still achieving flexible switching between multiple functions has become a pressing technical challenge.

[0041] To alleviate the above problems, this application provides a fresh air module and an air conditioner that can use a single motor to open and close two air valve structures.

[0042] refer to Figures 1-12This application provides a fresh air module, including: a housing 1 and a first shifting module 2. The housing 1 includes an upper air duct 11 and a lower air duct 12, which are connected by a fan 13. The upper air duct 11 includes a fresh air duct, a first circulating air duct 112 and a second circulating air duct 113 located at intervals on both sides of the fresh air duct, and a common air duct 114 located at one end of the fresh air duct, the first circulating air duct 112, and the second circulating air duct 113. The common air duct 114 is constantly connected to the fresh air duct 111. The first shifting module 2 is located between the common air duct 114 and the fresh air duct. Between the first circulating air duct 112 and the second circulating air duct 113, the first shifting module 2 includes a drive motor 21, a gear module 22, a first sliding plate 23, and a second sliding plate 24. The drive motor 21 is used to drive the gear module 22 to rotate. The gear module 22 is used to drive the first sliding plate 23 and the second sliding plate 24 to move respectively, so that the first sliding plate 23 opens and closes the first connection port A1 between the first circulating air duct 112 and the common air duct 114 during the movement, and the second sliding plate 24 opens and closes the second connection port A2 between the second circulating air duct 113 and the common air duct 114 during the movement.

[0043] In this way, two layered air ducts can be formed within the casing 1 of the fan 13. By adding a first shifting module 2, which includes a drive motor 21, a gear module 22, a first sliding plate 23, and a second sliding plate 24, the drive motor 21 drives the gear module 22 to rotate. The gear module 22 drives the first sliding plate 23 and the second sliding plate 24 to move respectively. This allows the first sliding plate 23 to open and close the first connection port A1 between the first circulating air duct 112 and the common air duct 114 during its movement, and the second sliding plate 24 to open and close the second connection port A2 between the second circulating air duct 113 and the common air duct 114 during its movement. Thus, a single motor can simultaneously control the movement of both sliding plates, thereby controlling the opening and closing of the first connection port A1 between the first circulating air duct 112 and the common air duct 114, as well as the opening and closing of the second connection port A2 between the second circulating air duct 113 and the common air duct 114. In other words, the solution enables the use of one motor to control two air valves, which structurally reduces the number of motors, drive circuits, sensors, and other related components, thereby reducing the overall cost.

[0044] Specifically, the first shifting module 2 is located at the junction of the common air duct 114 and each air duct. Its drive motor 21 drives the gear module 22 to operate, and the gear module 22 pulls the first sliding plate 23 and the second sliding plate 24 to move respectively. The first sliding plate 23 can control the opening and closing of the first connection port A1 between the first circulating air duct 112 and the common air duct 114, and the second sliding plate 24 can control the opening and closing of the second connection port A2 between the second circulating air duct 113 and the common air duct 114. This design uses a single motor to synchronously control two sliding plates to achieve the function of two air valves, reducing the number of motors used. The supporting components such as drive circuits and sensors are also simplified accordingly. While reducing the overall cost, the precise control of the sliding plate movement can flexibly switch the connection state of the air duct, optimize the distribution and circulation path of airflow in the fresh air module, improve the energy efficiency and economy of the fresh air system, and make the structure of the fresh air module simpler and the control more efficient.

[0045] Considering the specific structural scheme of the gear module 22 and its opening and closing function on the corresponding slide plate, the fresh air module provided in this application embodiment includes a first gear 221, a second gear 222, and a third gear 223. The first gear 221 and the second gear 222 are coaxially and intermittently connected via a first drive shaft 224, which is driven by the drive motor 21. The first gear 221 meshes with the first slide plate 23, and the rotation of the first gear 221 drives the movement of the first slide plate 23. The third gear 223 meshes with the external teeth of the second gear 222, and the third gear 223 meshes with the second slide plate 24, and the rotation of the third gear 223 drives the movement of the second slide plate 24, so that the first slide plate 23 and the second slide plate 24 can open and close synchronously.

[0046] In this way, the drive motor 21 outputs power, which drives the coaxially spaced first gear 221 and second gear 222 to rotate synchronously via the first drive shaft 224. The first gear 221 meshes with the first slide plate 23, and its rotation is directly converted into the linear movement of the first slide plate 23, realizing the opening and closing of the first connecting port A1. The second gear 222 meshes with the external teeth of the third gear 223, transmitting power to the third gear 223. The third gear 223 then meshes with the teeth of the second slide plate 24, driving the second slide plate 24 to move linearly, completing the opening and closing of the second connecting port A2. By utilizing the meshing transmission relationship between gears, a transmission link of "motor-coaxial double gear-external meshing gear-slide plate" is constructed. Relying on the mechanical characteristics of gear rotation and tooth meshing, the rotational motion of the motor is converted into the linear motion of the slide plate, achieving synchronous control of the two connecting ports.

[0047] Furthermore, through the transmission design of coaxial double gears and external meshing gears, a single drive motor 21 can synchronously drive two slide plates, precisely controlling the opening and closing states of the first and second connecting ports A2. This ensures that the two slide plates move in a coordinated manner during duct switching, improving the stability and reliability of the fresh air module's duct control and avoiding airflow turbulence caused by asynchronous movements. From a cost and efficiency perspective, compared to multi-motor control schemes, this simplifies the transmission structure, reduces the number of motors and supporting drive and control components, and lowers hardware costs and system complexity. The mechanical characteristics of gear meshing transmission ensure efficient power transmission, improve the opening and closing response speed of the slide plates, optimize the timeliness of airflow adjustment in the fresh air module, and help the fresh air system achieve more precise and efficient airflow circulation and distribution, enhancing the overall product performance and market competitiveness.

[0048] Considering the specific scheme of synchronous rotation of the third gear 223, in the fresh air module provided in this application embodiment, the third gear 223 is coaxially connected with the second drive shaft 225, and the second drive shaft 225 passes through the third gear 223 and is fixedly connected to the connecting plate of the drive motor 21.

[0049] In this way, when the drive motor 21 operates, it drives the first gear 221 and the second gear 222 to rotate via the first drive shaft 224. The second gear 222 meshes with the external teeth of the third gear 223. Since the third gear 223 and the second drive shaft 225 are coaxially connected, and the second drive shaft 225 passes through the third gear 223 and is fixed to the connecting plate of the drive motor 21, when the second gear 222 drives the third gear 223 to rotate, the second drive shaft 225 can serve as a rotational support structure for the third gear 223. By utilizing the mechanical transmission characteristics of gear meshing, the power is stably transmitted, so that the third gear 223 rotates synchronously with the meshing action of the second gear 222, thereby transmitting the power to the second slide plate 24. This, in conjunction with the first gear 221, drives the first slide plate 23, realizing the synchronous opening and closing control of the two slide plates based on gear transmission.

[0050] Furthermore, the second drive shaft 225 is fixed to the drive motor 21 connecting plate, providing stable rotational support for the third gear 223. This prevents axial offset and wobbling when the third gear 223 meshes with the second gear 222, ensuring the accuracy of gear meshing and transmission, improving the synchronization and reliability of the slide plate opening and closing actions, and preventing abnormal opening and closing of the air duct connection port due to unstable gear transmission, which would affect the airflow control of the fresh air module. From an assembly and cost perspective, this design simplifies the installation and fixing structure of the third gear 223, eliminating the need for additional complex support components, facilitating production and assembly. It also optimizes the internal space utilization of the module by utilizing the existing drive motor 21 connecting plate layout. While ensuring transmission functionality, it helps reduce production process difficulty and cost, enhancing product manufacturability and market competitiveness.

[0051] Considering the structural schemes of the first sliding plate 23 and the second sliding plate 24, in the fresh air module provided in this application embodiment, the first sliding plate 23 includes a first hollow portion 231 and a first solid portion 232. The first solid portion 232 is used to cover the first communication port A1 between the first circulating air duct 112 and the common air duct 114. The inner wall of the first hollow portion 231 has a first continuous tooth structure 2311, which is used to mesh with the first gear 221. The second sliding plate 24 includes a second hollow portion 241 and a second solid portion 242. The second solid portion 242 is used to cover the second communication port A2 between the second circulating air duct 113 and the common air duct 114. The inner wall of the second hollow portion 241 has a second continuous tooth structure 2411, which is used to mesh with the third gear 223.

[0052] In this way, when the fresh air module is running, the drive motor 21 drives the gear module 22 to rotate. The first gear 221 meshes with the first continuous tooth structure 2311 of the first slide plate 23. By utilizing the transmission relationship between the gear and the tooth structure, the rotational motion of the first gear 221 is converted into the linear movement of the first slide plate 23. When the first slide plate 23 moves, its first solid part 232 can cover or avoid the first connection port A1 between the first circulating air duct 112 and the common air duct 114, thereby realizing the opening and closing of the connection port. Similarly, the third gear 223 meshes with the second continuous tooth structure 2411 of the second slide plate 24. When the third gear 223 rotates, it drives the second slide plate 24 to move linearly. The second solid part 242 of the second slide plate 24 can cover or open the second connection port A2 between the second circulating air duct 113 and the common air duct 114. Thus, through the structural characteristics of the slide plate and the gear transmission, the control of the two air duct connection ports is completed.

[0053] Furthermore, the first sliding plate 23 and the second sliding plate 24 mesh with the gear through the continuous tooth structure on the inner wall of the hollow part, ensuring that the power of the gear rotation can be accurately and stably converted into the linear displacement of the sliding plate. This allows the first solid part 232 and the second solid part 242 to accurately open and close the corresponding connecting ports, realizing flexible switching of the air duct within the fresh air module and ensuring that the airflow circulates according to the preset path. From the perspective of structural design advantages, the sliding plate adopts a structure that combines the hollow part and the solid part. While ensuring effective meshing with the gear and the opening and closing function of the connecting ports, it reduces the weight of the sliding plate, reduces the moving resistance, reduces the load on the drive motor 21, improves the transmission efficiency, simplifies the structure of the sliding plate, facilitates manufacturing and assembly, reduces production costs, and improves the practicality and reliability of the product.

[0054] Considering the specific construction positions of the first continuous tooth structure 2311 and the second continuous tooth structure 2411, in the fresh air module provided in this application embodiment, the first inner bottom wall 231A of the first hollow portion 231 has the first continuous tooth structure 2311, and the first inner bottom wall 231A is constructed as a linear structure; the second inner bottom wall 241A of the second hollow portion 241 has the second continuous tooth structure 2411, and the second inner bottom wall 241A is constructed as a linear structure.

[0055] In this way, in the transmission system of the fresh air module, the drive motor 21 drives the gear module 22 to operate. The first gear 221 meshes with the first continuous tooth structure 2311 of the first slide plate 23, and the second gear 222 meshes with the second continuous tooth structure 2411 of the second slide plate 24 through the third gear 223. Since the first inner bottom wall 231A of the first hollow part 231 and the second inner bottom wall 241A of the second hollow part 241 are both constructed as linear structures, and the continuous tooth structure provided on them is also linearly arranged, the gears can smoothly mesh and transmit along the linear tooth structure when rotating. The circular motion of the gears is precisely converted into the translational motion of the first slide plate 23 and the second slide plate 24 in a straight line through meshing with the linear continuous tooth structure, thereby realizing the stable opening and closing control of the first connecting port A1 between the first circulating air duct 112 and the common air duct 114, and the second connecting port A2 between the second circulating air duct 113 and the common air duct 114.

[0056] Furthermore, the first inner bottom wall 231A and the second inner bottom wall 241A of the linear structure, in conjunction with the continuous toothed structure, provide a stable guiding path for the transmission between the gear and the slide plate. This reduces wobbling and offset during transmission, improves the straightness and positioning accuracy of the slide plate movement, and thus ensures the accuracy and reliability of the opening and closing action of the air duct connection, effectively avoiding problems such as airflow leakage or control failure. In addition, the linear structure design makes the meshing structure of the slide plate and gear simpler and more regular, facilitating processing, manufacturing, assembly, and debugging, and reducing the difficulty of production processes and manufacturing costs. At the same time, the stable linear transmission method can reduce mechanical wear, extend the service life of the gear and slide plate, improve the overall durability and stability of the fresh air module, and enhance the product's market competitiveness.

[0057] Considering that the lower air duct 12 uses a single structure to implement the opening and closing scheme of the three air outlets, the fresh air module provided in this application embodiment has a first air outlet 121, a second air outlet 122, and a fresh air exhaust outlet 123. The fresh air exhaust outlet 123 is located between the first air outlet 121 and the second air outlet 122, and the first air outlet 121 and the second air outlet 122 are arranged opposite to each other. The fresh air module also includes a second shifting module 3, which is installed on the lower air duct 12 and is used to open and close the first air outlet 121, the second air outlet 122, and the fresh air exhaust outlet 123 during movement.

[0058] Thus, the lower air duct 12 is provided with a first air outlet 121, a second air outlet 122, and a fresh air exhaust outlet 123 located between them, which are relatively distributed. The second displacement module 3 is installed in the lower air duct 12 and controls the opening and closing of the three air outlets through its own movement. The second displacement module 3 generates linear or sliding displacement under power drive. During the movement, the module components can cover or avoid the first air outlet 121, the second air outlet 122, and the fresh air exhaust outlet 123 respectively. By using the principle of mechanical shielding, it blocks or connects the airflow channels, realizes the switching of the opening and closing states of different air outlets, and thus accurately controls the exhaust direction and path of the airflow in the lower air duct 12.

[0059] Furthermore, the second shifting module 3 achieves the opening and closing control of three air outlets with a single structure, simplifying the complex structure of traditional multi-component separate control, reducing the number of drive components and transmission components, lowering system complexity and failure rate, and improving the integration and reliability of duct control. Depending on actual application needs, the opening and closing states of different air outlets can be flexibly switched to achieve multiple airflow emission modes, such as opening only the fresh air exhaust outlet 123 for fresh air exhaust, or simultaneously opening the first and second air outlets 122 to achieve a specific airflow circulation path. This greatly enhances the adaptability and practicality of the fresh air module, meets the ventilation needs in different scenarios, and improves the product's market competitiveness.

[0060] Considering the specific structural scheme of the second shifting module 3, in the fresh air module provided in this application embodiment, the second shifting module 3 includes a main baffle 31, a first secondary baffle 32, and a second secondary baffle 33. The main baffle 31 has a third hollow portion 311 and a third solid portion 312 and a fourth solid portion 313 located on both sides of the third hollow portion 311. The first secondary baffle 32 is located in the third solid portion 312, and the second secondary baffle 33 is located in the fourth solid portion 313. The fresh air module also includes a telescopic rod 4, which is installed on one side of the housing 1 where the lower air duct 12 is located. The telescopic rod 4 is connected to one of the first secondary baffle 32 or the second secondary baffle 33 and is used to push the second shifting module 3 to move so as to adjust the opening and closing of the first air outlet 121, the second air outlet 122, and the fresh air exhaust outlet 123.

[0061] In this way, the second displacement module 3 is powered by the telescopic rod 4 to achieve movement control. The telescopic rod 4 is installed on one side of the housing 1 of the lower air duct 12. When the telescopic rod 4 extends or retracts, it drives the first auxiliary baffle 32 or the second auxiliary baffle 33 connected to it to move, thereby driving the main baffle 31 and the other auxiliary baffle to move horizontally within the lower air duct 12. During the movement, the third solid part 312 and the fourth solid part 313 of the main baffle 31, as well as the first auxiliary baffle 32 and the second auxiliary baffle 33 on both sides, open and close the air outlets by blocking or avoiding the first air outlet 121, the second air outlet 122 and the fresh air exhaust outlet 123. By utilizing the linear extension and retraction motion of the telescopic rod 4, combined with the solid structure of the main baffle 31 and the auxiliary baffle, the power of the telescopic rod 4 is converted into mechanical blocking control of the air outlets. By covering the corresponding air outlets with solid parts at different positions, the airflow channels are blocked or connected, thereby achieving flexible adjustment of the opening and closing states of the three air outlets.

[0062] Furthermore, the second shifting module 3 adopts a structure in which the main baffle 31 and the auxiliary baffle cooperate. Control of the three air outlets can be achieved through a single telescopic rod 4, greatly simplifying the complex structure of traditional multi-component independent control, reducing the number of drive components, lowering manufacturing costs and system failure rates, and improving the compactness and integration of the fresh air module structure. In addition, this structure can precisely and flexibly adjust the opening and closing state of the air outlets. Users can push the second shifting module 3 through the telescopic rod 4 to achieve various airflow emission modes according to actual needs, such as opening only the fresh air exhaust vent 123 to discharge polluted air, or simultaneously opening the first and second air outlets 122 to achieve airflow circulation in a specific direction. This enhances the flexibility and adaptability of the fresh air module, improving the product's practicality and market competitiveness.

[0063] Considering different blocking schemes for the telescopic rod 4 to drive the second displacement module 3 to move, in the fresh air module provided in this application embodiment, the telescopic rod 4 drives the second displacement module 3 to move; in the first state, the first auxiliary baffle 32 is used to block the second air outlet 122, the second auxiliary baffle 33 is used to block the fresh air exhaust outlet 123, and the third hollow part 311 of the main baffle 31 coincides with the first air outlet 121; in the second state, one of the third solid part 312 or the fourth solid part 313 is used to block the fresh air exhaust outlet 123, the first auxiliary baffle 32 is used to block the second air outlet 122, or the second auxiliary baffle 33 is used to block the first air outlet 121.

[0064] In this way, the second displacement module 3 is powered by the telescopic rod 4 to achieve movement control. The telescopic rod 4 is installed on one side of the housing 1 of the lower air duct 12. When the telescopic rod 4 extends or retracts, it drives the first auxiliary baffle 32 or the second auxiliary baffle 33 connected to it to move, thereby driving the main baffle 31 and the other auxiliary baffle to move horizontally within the lower air duct 12. During the movement, the third solid part 312 and the fourth solid part 313 of the main baffle 31, as well as the first auxiliary baffle 32 and the second auxiliary baffle 33 on both sides, open and close the air outlets by blocking or avoiding the first air outlet 121, the second air outlet 122 and the fresh air exhaust outlet 123. By utilizing the linear extension and retraction motion of the telescopic rod 4, combined with the solid structure of the main baffle 31 and the auxiliary baffle, the power of the telescopic rod 4 is converted into mechanical blocking control of the air outlets. By covering the corresponding air outlets with solid parts at different positions, the airflow channels are blocked or connected, thereby achieving flexible adjustment of the opening and closing states of the three air outlets.

[0065] Furthermore, the second shifting module 3 adopts a structure in which the main baffle 31 and the auxiliary baffle cooperate. Control of the three air outlets can be achieved through a single telescopic rod 4, greatly simplifying the complex structure of traditional multi-component independent control, reducing the number of drive components, lowering manufacturing costs and system failure rates, and improving the compactness and integration of the fresh air module structure. In addition, this structure can precisely and flexibly adjust the opening and closing state of the air outlets. Users can push the second shifting module 3 through the telescopic rod 4 to achieve various airflow emission modes according to actual needs, such as opening only the fresh air exhaust vent 123 to discharge polluted air, or simultaneously opening the first and second air outlets 122 to achieve airflow circulation in a specific direction. This enhances the flexibility and adaptability of the fresh air module, improving the product's practicality and market competitiveness.

[0066] Considering the specific structural schemes of the first sub-baffle 32 and the second sub-baffle 33, in the fresh air module provided in this application embodiment, the first sub-baffle 32 includes a first sub-baffle structure 321 and a second sub-baffle structure 322 that is parallel to and connected to the first sub-baffle structure 321; the area of ​​the first sub-baffle structure 321 is smaller than the area of ​​the second sub-baffle structure 322, and the second sub-baffle structure 322 is used to completely block the second air outlet 122; the second sub-baffle 33 includes a third sub-baffle structure 331 and a fourth sub-baffle structure 332 that is parallel to and connected to the third sub-baffle structure 331; the area of ​​the third sub-baffle structure 331 is smaller than the area of ​​the fourth sub-baffle structure 332, and the fourth sub-baffle structure 332 is used to completely block the fresh air exhaust outlet 123.

[0067] Thus, the first sub-baffle 32 and the second sub-baffle 33 of the second shift module 3 adopt a unique double-layer sub-baffle structure design. The first sub-baffle 32 is formed by parallel connection of a smaller first sub-baffle structure 321 and a larger second sub-baffle structure 322, while the second sub-baffle 33 is formed by parallel connection of a smaller third sub-baffle structure 331 and a larger fourth sub-baffle structure 332. When the telescopic rod 4 moves the second shift module 3, the second sub-baffle structure 322, with its larger area, can completely cover and block the second air outlet 122, preventing airflow from escaping from there; similarly, the fourth sub-baffle structure 332 can completely block the fresh air exhaust outlet 123. Through this double-layer sub-baffle structure, by using sub-baffles of different areas, the size of the air outlet is precisely matched, achieving effective blocking of the air outlet. Furthermore, by controlling the position of the second shift module 3, the opening and closing states of each air outlet of the lower air duct 12 can be flexibly adjusted, controlling the airflow path.

[0068] Furthermore, the double-layer sub-baffle structure design of the first sub-baffle 32 and the second sub-baffle 33, through the reasonable configuration of sub-baffles of different areas, not only ensures complete sealing of the air outlet and effective airflow control, but also optimizes the material use and weight distribution of the baffles while meeting functional requirements. This reduces the overall weight of the second shifting module 3, lowers the power required to drive the telescopic rod 4, reduces mechanical wear, and extends the service life of components. In addition, this structural design makes the second shifting module 3 more precise and stable in sealing the air outlet, avoiding airflow leakage or incomplete sealing caused by mismatched baffle sizes. This effectively improves the reliability and accuracy of the fresh air module's airflow control, enhances the stability and efficiency of the fresh air system, meets diverse ventilation needs, and enhances the product's technological advantage in the market.

[0069] This utility model also provides an air conditioner, including the above-mentioned fresh air module and an indoor unit, wherein the indoor unit is matched and applied with the fresh air module to form an internal circulation mode and / or an air intake internal circulation mode.

[0070] Thus, applying the aforementioned fresh air module to air conditioners can significantly improve their functionality and user experience. The innovative layered duct design, single-motor dual-slide control, and flexible opening / closing scheme of multiple air outlets in the fresh air module enable precise control of fresh air introduction and airflow circulation paths. When operating in conjunction with the indoor unit, it can effectively construct an internal circulation mode and a suction internal circulation mode. In internal circulation mode, the fresh air module controls the connection status of the first and second circulation ducts 113, working with the indoor unit to achieve efficient circulation and purification of indoor air, continuously improving indoor air quality without introducing outdoor fresh air. In suction internal circulation mode, the fresh air module can introduce an appropriate amount of fresh air as needed, mixing it with indoor return air before processing by the indoor unit, ensuring indoor air freshness while avoiding increased energy consumption due to excessive fresh air introduction. This not only expands the operating modes of the air conditioner to meet user needs in different scenarios but also improves the energy efficiency and comfort of the air conditioner by optimizing airflow organization and energy utilization, enhancing the product's market competitiveness.

[0071] To better understand the specific solutions of the fresh air module and air conditioner in the embodiments of this application, the following description of the fresh air module is used as an example:

[0072] In this embodiment, the internal circulation air intake and exhaust process involves the indoor air conditioner entering the centrifugal fan 13 through two ducts. This requires two separate air valves for precise control to prevent inconsistent airflow in the two ducts, which could affect the operation of the centrifugal fan 13 or the module itself. Currently, rotary air valves are commonly used in fresh air modules for control. The challenge with rotary air valves is the need for precise control, requiring synchronized movement of two stepper motors. However, errors are inevitable in practice, and the accuracy inevitably decreases with increasing operating time.

[0073] The proposed air valve structure (i.e., the first shifting module 2) employs a gear and a sliding plate structure with a rack and pinion mechanism. In this structure, the internal circulation duct is controlled by a single motor, and the opening angle of the air vent is related to the gear rotation. The gear movement is relatively precise, ensuring that the opening angles of the first sliding plate 23 and the second sliding plate 24 are the same under the control of a single motor. The motor is fixed to a motor mounting plate. It is important to note that the structure contains three gears: a drive gear that engages with the second sliding plate 24, and a third gear 223 that engages with the first sliding plate 23. The transmission process involves the motor rotating, which drives the drive gear to rotate, thus moving the second sliding plate 24. Simultaneously, the second gear 222 is coaxial with the drive gear; the motor's rotation also drives the second gear 222 to rotate, thereby driving the third gear 223 to rotate, which in turn moves the first sliding plate 23.

[0074] Regarding the second shifting module 3, the main baffle 31 structure is used to block the first air outlet 121, the baffle structure 2 and the baffle structure 1 are used to block the second air outlet 122 and the fresh air exhaust outlet 123, and the baffle structure 3 and the baffle structure 4 are mainly used for sealing to reduce air leakage caused by errors in the movement of the air valve.

[0075] Currently, the downdraft duct damper uses a hydraulic telescopic rod structure 4. This is not a limitation; any structure capable of movement, such as a gear linkage, is acceptable. Since only one air outlet of the fresh air module opens at a time—the first outlet 121, the second outlet 122, and the fresh air exhaust outlet 123—the downdraft duct damper must ensure this function is maintained during operation.

[0076] The integrated air valve can move left and right within the lower air duct 12 of the fresh air module. Different positions enable different functions. In the first position, the main baffle 31 is in the empty position, the fresh air module's outlet 1 is open, and the fresh air module's outlet 2 and fresh air exhaust outlets 123 are closed by baffle structures 2 and 1. In the second position, the hydraulic telescopic rod 4 retracts, closing the first outlet 121 with the main baffle 31, and simultaneously closing the fresh air exhaust outlet 123 with baffle structure 2. In the third position, the fresh air module's outlet 1 is closed by the main baffle 31, and simultaneously closing the second outlet 122 with baffle structure 1. During the operation of the integrated module, sufficient space for movement needs to be left on the left side. Currently, the left side of the fresh air module is directly connected to the duct unit, allowing for some movement space.

[0077] It should be noted that when the main baffle 31 seals the first air outlet 121, the baffle needs to completely block the first air outlet 121. Therefore, the length of the blocking part of the main baffle 31 needs to be about 5mm longer than the first air outlet 121 to ensure complete closure.

[0078] It should be noted that, except for the internal circulation + fresh air mode, all other modes require the valve to be fully open or fully closed, and there is no option to open it to any angle and then stop.

[0079] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0080] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0081] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A fresh air module, characterized in that, The fresh air module includes: The housing includes an upper air duct and a lower air duct, the upper air duct and the lower air duct being connected by a fan; The upper air duct includes a fresh air duct, a first circulating air duct and a second circulating air duct located at intervals on both sides of the fresh air duct, and a common air duct located at one end of the fresh air duct, the first circulating air duct and the second circulating air duct; the common air duct is constantly connected to the fresh air duct. A first displacement module is located between the common air duct and the fresh air duct, the first circulating air duct, and the second circulating air duct. The first displacement module includes a drive motor, a gear module, a first sliding plate, and a second sliding plate. The drive motor drives the gear module to rotate, and the gear module drives the first sliding plate and the second sliding plate to move respectively, so that the first sliding plate opens and closes the first connection port between the first circulating air duct and the common air duct during the movement, and the second sliding plate opens and closes the second connection port between the second circulating air duct and the common air duct during the movement.

2. The fresh air module according to claim 1, characterized in that, The gear module includes a first gear, a second gear, and a third gear. The first gear and the second gear are coaxially and intermittently connected via a first drive shaft, which is driven by a drive motor. The first gear meshes with the teeth of the first slide plate, and the rotation of the first gear drives the movement of the first slide plate. The third gear meshes with the external teeth of the second gear and is also meshed with the teeth of the second slide plate. The rotation of the third gear drives the movement of the second slide plate, so that the first and second slide plates can open and close synchronously.

3. The fresh air module according to claim 2, characterized in that, The third gear is coaxially connected to the second drive shaft, and the second drive shaft passes through the third gear and is fixedly connected to the connecting plate of the drive motor.

4. The fresh air module according to claim 2, characterized in that, The first slide plate includes a first hollow portion and a first solid portion. The first solid portion is used to cover the first connection opening between the first circulating air duct and the common air duct. The inner wall of the first hollow portion has a first continuous tooth structure, which is used to mesh with the first gear teeth. The second slide plate includes a second hollow portion and a second solid portion. The second solid portion is used to cover the second connection opening between the second circulating air duct and the common air duct. The inner wall of the second hollow portion has a second continuous tooth structure, which is used to mesh with the third gear teeth.

5. The fresh air module according to claim 4, characterized in that, The first inner bottom wall of the first hollow portion has the first continuous toothed structure, and the first inner bottom wall is constructed as a linear structure; the second inner bottom wall of the second hollow portion has the second continuous toothed structure, and the second inner bottom wall is constructed as a linear structure.

6. The fresh air module according to claim 1, characterized in that, The lower air duct has a first air outlet, a second air outlet, and a fresh air exhaust outlet. The fresh air exhaust outlet is located between the first air outlet and the second air outlet, and the first air outlet and the second air outlet are arranged opposite to each other. The fresh air module also includes a second displacement module, which is installed in the lower air duct and is used to open and close the first air outlet, the second air outlet, and the fresh air exhaust outlet during movement.

7. The fresh air module according to claim 6, characterized in that, The second shifting module includes a main baffle, a first secondary baffle, and a second secondary baffle. The main baffle has a third hollow portion and a third solid portion and a fourth solid portion located on both sides of the third hollow portion. The first secondary baffle is located in the third solid portion, and the second secondary baffle is located in the fourth solid portion. The fresh air module also includes a telescopic rod, which is installed on one side of the housing where the lower air duct is located. The telescopic rod is connected to one of the first sub-baffle or the second sub-baffle and is used to push the second displacement module to move, so as to adjust the opening and closing of the first air outlet, the second air outlet and the fresh air exhaust outlet.

8. The fresh air module according to claim 7, characterized in that, The telescopic rod drives the second displacement module to move; in the first state, the first auxiliary baffle is used to block the second air outlet, the second auxiliary baffle is used to block the fresh air exhaust outlet, and the third hollow part of the main baffle coincides with the first air outlet; in the second state, one of the third solid part or the fourth solid part is used to block the fresh air exhaust outlet, the first auxiliary baffle is used to block the second air outlet, or the second auxiliary baffle is used to block the first air outlet.

9. The fresh air module according to claim 8, characterized in that, The first sub-baffle includes a first sub-baffle structure and a second sub-baffle structure that is parallel to and connected to the first sub-baffle structure; the area of ​​the first sub-baffle structure is smaller than the area of ​​the second sub-baffle structure, and the second sub-baffle structure is used to completely block the second air outlet; the second sub-baffle includes a third sub-baffle structure and a fourth sub-baffle structure that is parallel to and connected to the third sub-baffle structure; the area of ​​the third sub-baffle structure is smaller than the area of ​​the fourth sub-baffle structure, and the fourth sub-baffle structure is used to completely block the fresh air exhaust outlet.

10. An air conditioner, characterized in that, The system includes a fresh air module as described in any one of claims 1-9, and further includes an indoor unit, which is matched and applied to the fresh air module to form an internal circulation mode and / or an air intake internal circulation mode.

Images