Fresh air outlet control device and fresh air machine

Abstract

The application provides a fresh air outlet control device and a fresh air machine, and relates to the technical field of air conditioners. The fresh air outlet control device is designed to solve the problem that it is inconvenient to control the fresh air outlet of the fresh air machine. The fresh air outlet control device comprises a shunt cavity, the shunt cavity is provided with a blowdown port and a plurality of air outlets, the blowdown port is connected with a dirty air return pipe, the air outlets are connected with air outlet pipes, each air outlet or air outlet pipe is provided with a louver switch, and each blowdown port or dirty air return pipe is provided with a louver switch. The fresh air outlet control device provided by the application can conveniently control whether the fresh air machine blows air to different directions and the air volume of air blown to different directions.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically, to a fresh air outlet control device and a fresh air unit. Background Technology

[0002] In existing technologies, air conditioners with fresh air functions introduce outdoor air into the room through a fresh air unit to gradually drive out the stale indoor air. However, since the windows are closed at this time, the indoor air can only be gradually exhausted through door and window gaps, resulting in a low exhaust rate and a low rate of fresh air replenishment, leading to poor fresh air performance.

[0003] In addition, existing air conditioners mostly adjust the air volume of fresh air by adjusting the speed of the fresh air fan. However, if a lower air volume is required, the fresh air fan needs to operate at a lower speed range, which is not conducive to the fresh air fan operating in a more efficient range and reduces the efficiency of the fresh air fan. Summary of the Invention

[0004] The first objective of this invention is to provide a fresh air outlet control device to solve the technical problem of inconvenience in controlling the fresh air outlet volume of existing fresh air units.

[0005] The fresh air outlet control device provided by the present invention includes a diversion cavity, the diversion cavity having a drain outlet and multiple air outlets, the drain outlet being connected to a waste air return duct, the air outlets being connected to an air outlet duct, each air outlet or air outlet duct being provided with a louvered switch, and each drain outlet or waste air return duct being provided with a louvered switch.

[0006] The beneficial effects of the fresh air outlet control device of this invention are:

[0007] By installing louvered switches at each air outlet or duct, and at each drain or return duct, the opening and closing of each duct can be independently controlled, allowing for independent control of whether air is being discharged from each duct. Generally, installing multiple ducts on a fresh air unit means discharging air in multiple directions, thus facilitating convenient control over whether the fresh air unit discharges air in different directions and the air volume in each direction.

[0008] In a preferred embodiment, the louvered switch includes a switch driver and multiple rotary switch plates, wherein the multiple rotary switch plates are connected to the switch driver in a transmission manner.

[0009] The switch driver drives multiple rotary switch plates. By having the corresponding edges of adjacent rotary switch plates engage, the air outlet or duct, drain outlet or return duct for waste air can be closed. When the multiple rotary switch plates are parallel to the airflow direction of the duct or return duct, they are in their maximum open position, minimizing airflow obstruction. Furthermore, the combined action of multiple rotary switch plates reduces the projected length of the louvered switch in the airflow direction, thus facilitating its layout and minimizing its impact on the fresh air fan layout.

[0010] In a preferred embodiment, multiple rotary switch plates are pivotally connected to the waste air return duct or the exhaust duct, and multiple rotary switch plates are pivotally connected to a connecting rod. Any two rotary switch plates pivotally connected to the connecting rod, the connecting rod, and the waste air return duct or the exhaust duct form a parallelogram mechanism.

[0011] Placing the rotary switch plates within the air outlet and return ducts ensures the integrity of the space within the distribution chamber and reduces turbulence generated during gas movement. Furthermore, using a parallelogram mechanism formed by connecting rods and rotary switch plates allows for synchronized movement and consistent angles of multiple switch plates. This ensures that the air outlet and return ducts are closed as tightly as possible when needed, and that when maximum opening is required, the rotary switch plates are positioned in the same direction as the airflow, minimizing resistance to fresh air flow.

[0012] In a preferred embodiment, at least one of the multiple rotary switch plates has a torque transmission hole; the power output shaft of the switch drive is inserted into the torque transmission hole and is circumferentially fixedly connected to the torque transmission hole.

[0013] By inserting the power output shaft of the switch driver into the torque transmission hole and fixing it circumferentially, the rotation of the power output shaft of the switch driver can be directly converted into the rotation of the rotary switch plate. This method has high transmission efficiency and also helps to simplify the structure of the louvered switch and reduce its height.

[0014] In the preferred embodiment, the outer surfaces of both the waste air return duct and the air outlet duct are provided with mounting posts, the switch drive component is provided with mounting ear plates, and the mounting ear plates are fixed to the mounting posts by male threaded connectors; all of the rotary switch plates are provided with torque transmission holes.

[0015] By setting mounting posts to install the switch drivers, the height of the power output shaft of each switch driver can be increased, making it possible to connect the rotary switch plate to the power output shaft after passing through the wall of the exhaust duct and the return duct. This allows all rotary switch plates in the same louvered switch, whether or not they are directly connected to the switch driver, to have the same shape, structure, and size, thus reducing the complexity of product assembly.

[0016] In a preferred embodiment, the switch driver is an electric motor, and the mounting post connecting the waste air return duct or the air outlet duct is arranged at a right angle to the arrangement direction of the rotary switch plate pivotally connected to the same waste air return duct or the air outlet duct.

[0017] Typically, the motor used as a switch driver has a wiring section. Viewed along the motor's axis, this wiring section is offset from the mounting lugs; otherwise, it would interfere with the tool used to rotate the screws. The rotary switch plate is arranged perpendicular to the airflow direction of the outlet and return ducts, i.e., along the circumference of the distribution cavity. Therefore, by setting the mounting post connection perpendicular to the distribution cavity's direction, the motor wiring can be arranged roughly along the circumference of the outer side of the distribution cavity. This provides more space for the wiring and reduces interference from the limited space between the fresh air fan casing and the distribution cavity. In other words, the size of the fresh air fan casing can be appropriately reduced, saving materials and lowering costs.

[0018] In a preferred embodiment, both the inner wall of the waste air return duct and the inner wall of the air outlet duct are provided with limiting ports, which are used to abut against the edge of one of the rotary switch plates.

[0019] By setting a limiting port, the fit between the edge of the rotary switch plate and the inner wall of the waste air return duct and the inner wall of the air outlet duct can be adjusted, improving the sealing performance and preventing the rotary switch plate from rotating too much, thus wasting time switching the switch.

[0020] In a preferred embodiment, the switch driver is mounted on the upper surface of the waste air return duct or the air outlet duct.

[0021] Installing the switch driver on the upper surface of the waste air return duct or air outlet duct facilitates tightening or loosening of the male threaded connection with tools, and also facilitates wiring of switch drivers such as motors, improving the convenience and efficiency of loading and unloading operations.

[0022] In a preferred embodiment, there are three exhaust ducts and one waste air return duct. The waste air return duct is arranged at a 90° angle to the adjacent exhaust duct, and the three exhaust ducts are spaced 90° apart.

[0023] By arranging the air supply duct and the waste air return duct in this way, fresh air can be supplied from the front, left and right directions of the fresh air unit, and the fresh air supply and volume in the three directions can be controlled by louvered switches, which improves the user experience.

[0024] The second objective of this invention is to provide a fresh air ventilator to solve the technical problem of inconvenience in controlling the fresh air output of the fresh air ventilator.

[0025] The fresh air ventilator provided by the present invention includes the aforementioned fresh air outlet control device.

[0026] By installing the aforementioned fresh air outlet control device in the fresh air unit, the fresh air unit accordingly possesses all the advantages of the aforementioned fresh air outlet control device, which will not be elaborated upon here. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments or background art of the present invention, the drawings used in the description of the embodiments or background art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the fresh air outlet control device provided in Embodiment 1 of the present invention in the closed state of the louvered switch;

[0029] Figure 2 This is a schematic diagram of the fresh air outlet control device provided in Embodiment 1 of the present invention in the open state of the louvered switch;

[0030] Figure 3 This is a schematic diagram of the louvered switch in the closed state of the fresh air outlet control device provided in Embodiment 1 of the present invention;

[0031] Figure 4 This is a schematic diagram of the louvered switch in the open state of the fresh air outlet control device provided in Embodiment 1 of the present invention;

[0032] Figure 5 This is a top sectional view of the fresh air outlet control device provided in Embodiment 1 of the present invention in the louvered switch closed state;

[0033] Figure 6 This is a top sectional view of the fresh air outlet control device provided in Embodiment 1 of the present invention in the louvered switch open state;

[0034] Figure 7 This is a schematic diagram of the fresh air outlet control device provided in Embodiment 2 of the present invention in the open state of the louvered switch.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100-Diverter cavity; 110-Air outlet; 120-Drain outlet; 200-Louvre switch; 210-Switch driver; 211-Power output shaft; 212-Wiring part; 213-Mounting ear plate; 220-Rotary switch plate; 221-Plate body; 222-Upper pivot shaft; 223-Lower pivot shaft; 224-Swing rod; 225-Torque transmission hole; 230-Connecting rod; 300-Air outlet duct; 301-Mounting column; 302-Limiting port; 400-Sewage return duct;

[0037] 501 - Fresh air fan; 502 - Fresh air duct; 503 - Filter chamber; 504 - Stale air inlet valve. Detailed Implementation

[0038] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0039] Example 1:

[0040] Figure 1 This is a schematic diagram of the fresh air outlet control device provided in Embodiment 1 of the present invention in the closed state of the louvered switch; Figure 2 This is a schematic diagram of the fresh air outlet control device provided in Embodiment 1 of the present invention in the open state of the louvered switch; as shown. Figures 1-2 As shown, the fresh air outlet control device provided in Embodiment 1 of the present invention includes a diversion cavity 100, which has a drain port 120 and multiple air outlets 110. The drain port 120 is connected to the waste air return pipe 400, and the air outlets 110 are connected to the air outlet pipe 300. Each air outlet 110 or air outlet pipe 300 is provided with a louvered switch 200, and each drain port 120 or waste air return pipe 400 is provided with a louvered switch 200.

[0041] Specifically, in this embodiment, the diversion cavity 100 is an inverted barrel shape with side walls and a bottom wall. The diversion cavity 100 can be a hollow cylinder or hollow cone with an open bottom. The air outlet duct 300 can be connected to the air outlet 110. Specifically, the inner end of the air outlet duct 300, i.e., the end facing the inner side of the diversion cavity 100, abuts against the outer edge of the air outlet 110, or the inner end of the air outlet 110 is inserted into the air outlet 110 and flush with the inner wall of the diversion cavity 100 where the air outlet 110 is located, or the air outlet duct 300 is integrally formed with the diversion cavity 100. Similarly, the inner end of the waste air return duct 400 abuts against the outer edge of the drain outlet 120, or is inserted into the drain outlet 120 and flush with the inner wall of the diversion cavity 100 where the drain outlet 120 is located, or is integrally formed with the diversion cavity 100.

[0042] By installing louvered switches 200 at each air outlet 110 or air outlet duct 300, and at each sewage outlet 120 or sewage return duct 400, the opening and closing size of each air outlet duct 300 or sewage return duct 400 can be independently controlled, thereby independently controlling whether air is discharged from each air outlet duct 300. Generally speaking, installing multiple air outlet ducts 300 on a fresh air unit means that air is discharged in multiple directions, thus allowing control over whether the fresh air unit discharges air in different directions and the air volume in different directions.

[0043] In the first embodiment of this application, the louvered switch 200 is described based on the installation of a louvered switch 200 in the air outlet duct 300 or the waste air return duct 400. In another implementation, the air outlet duct 300 and the waste air return duct 400 also pass through the side wall of the diversion cavity 100 from the outside to the inside and extend into the inner side of the inner wall of the diversion cavity 100. Then, the inner end ports of the air outlet duct 300 and the waste air return duct 400 are the air outlet 110 and the sewage outlet 120, respectively. The louvered switch 200 can be installed on the top wall of the diversion cavity 100 to control the opening or opening area of ​​the inner end ports of the air outlet duct 300 and the waste air return duct 400. That is, the air outlet 110 is equipped with a louvered switch 200, and the sewage outlet 120 is equipped with a louvered switch 200.

[0044] Figure 3 This is a schematic diagram of the louvered switch in the closed state of the fresh air outlet control device provided in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the louvered switch in the open state of the fresh air outlet control device provided in Embodiment 1 of the present invention; as shown. Figure 3 and Figure 4 As shown, preferably, the louvered switch 200 includes a switch driver 210 and multiple rotary switch plates 220, which are connected to the switch driver 210 in a transmission manner.

[0045] Specifically, the switch driver 210 can be an electric motor.

[0046] The switch driver 210 drives multiple rotary switch plates 220. By having the corresponding edges of adjacent rotary drive plates 220 fit together, the air outlet 110 or air outlet duct 300, and the drain outlet 120 or waste air return duct 400 are closed. When the multiple rotary switch plates 220 are parallel to the airflow direction of the air outlet duct 300 or waste air return duct 400, they are in their maximum open position to minimize airflow obstruction. Moreover, the combined action of multiple rotary switch plates 220 reduces the projected length of the louvered switch 200 in the airflow direction, thus facilitating the layout of the louvered switch 200 and reducing its impact on the layout of the fresh air unit.

[0047] Figure 5This is a top sectional view of the fresh air outlet control device provided in Embodiment 1 of the present invention in the louvered switch closed state; Figure 6 This is a top sectional view of the fresh air outlet control device provided in Embodiment 1 of the present invention in the louvered switch open state; as shown. Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, preferably, multiple rotary switch plates 220 are all pivotally connected to the waste air return duct 400 or the exhaust duct 300, and multiple rotary switch plates 220 are all pivotally connected to the connecting rod 230. Any two rotary switch plates 220 pivotally connected to the connecting rod 230, the connecting rod 230 and the waste air return duct 400 or the exhaust duct 300 form a parallelogram mechanism.

[0048] Specifically, such as Figure 3 and Figure 4 As shown, taking the horizontal airflow as an example in this embodiment, each rotary switch plate 220 includes an upper pivot shaft 222 and a lower pivot shaft 223. The upper pivot shaft 222 and the lower pivot shaft 223 are coaxially arranged and both are fixedly connected to the plate body 221. The upper pivot shaft 222 is fixedly connected to the top of the plate body 221, and the lower pivot shaft 223 is fixedly connected to the bottom of the plate body 221. It should be noted that the lower pivot shaft 223 being fixedly connected to the bottom of the plate body 221 does not mean that the lower pivot shaft 223 and the plate body 221 are not detachable. In this embodiment, the lower pivot shaft 223 can be separated from the plate 221. During the process of installing the rotary switch plate 220 into the air outlet duct 300 and the waste air return duct 400, the upper pivot shaft 222 and the plate 221 can be placed inside the air outlet duct 300 and the waste air return duct 400 first, so that the upper pivot shaft 222 fits with the hole in the top wall of the air outlet duct 300 and the waste air return duct 400. Then, the lower pivot shaft 223 is inserted through the hole in the bottom wall of the air outlet duct 300 and the waste air return duct 400 and connected to the plate 221.

[0049] Specifically, such as Figure 3 and Figure 4 As shown, a swing arm 224 is also fixedly connected to the lower part of the lower pivot shaft 223. In each louvered switch 200, the plate 221 of each rotary switch plate 220 and the relative angle and position with the swing arm 224 are the same. The free end of each swing arm 224 is pivotally connected to the connecting rod 230. Specifically, the connecting rod 230 and the swing arm 224 can both be located below the bottom wall of the air outlet duct 300 and the waste air return duct 400, which can reduce the interference received by the airflow when flowing in the air outlet duct 300 and the waste air return duct 400, thereby improving the air outlet efficiency.

[0050] By placing the rotary switch plate 220 in the outlet duct 300 and the waste air return duct 400, the integrity of the space within the diversion cavity 100 can be ensured, reducing turbulence generated when the gas moves within the diversion cavity 100. Furthermore, the parallelogram mechanism formed by the connecting rod 230 and the rotary switch plate 220 allows for the synchronization and angular consistency of the movement of multiple rotary switch plates 220. This ensures that when the outlet duct 300 and the waste air return duct 400 need to be closed, they can be closed as tightly as possible, while when the maximum area needs to be opened, the rotary switch plates 220 are positioned in the same direction as the airflow, thereby minimizing resistance to the flow of fresh air.

[0051] like Figures 1-6 As shown, preferably, among the multiple rotary switch plates 220, at least one rotary switch plate 220 has a torque transmission hole 225; the power output shaft 211 of the switch drive member 210 is inserted into the torque transmission hole 225 and is circumferentially fixedly connected to the torque transmission hole 225.

[0052] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, specifically, the torque transmission hole 225 is disposed on the upper pivot shaft portion 222. The distance between each point on its inner wall and the axis of the upper pivot shaft portion 222 is not uniform; that is, the torque transmission hole 225 is not a circular hole. Furthermore, the cross-section of the torque transmission hole 225 can be rectangular or square, or the torque transmission hole 225 can have a pair of parallel planes with the remaining portion being an arc surface. The power output shaft 211 of the switch drive component 210 is adapted to the shape and dimensions of the torque transmission hole 225.

[0053] By inserting the power output shaft 211 of the switch driver 210 into the torque transmission hole 225 and fixing it circumferentially, the rotation of the power output shaft 211 of the switch driver 210 can be directly converted into the rotation of the rotary switch plate 220. This results in high transmission efficiency and simplifies the structure of the louvered switch 200, reducing its overall height.

[0054] Of course, in another implementation, the transmission between the switch driver 210 and the rotary switch plate 220 can also be achieved through a combination of gears and racks. For example, a gear can be fixed on the power output shaft 211 of the switch driver 210, and a gear can also be fixed on the upper pivot shaft 222 of each rotary switch plate 220. These gears all mesh with the same rack. When the gear on the power output shaft 211 drives the rack to move, the rotary switch plate 220 can also be rotated, thereby closing or opening the air outlet duct 300 and the waste air return duct 400.

[0055] like Figure 1 and Figure 2As shown, preferably, the outer surfaces of the waste air return duct 400 and the air outlet duct 300 are provided with mounting posts 301, the switch drive component 210 is provided with mounting ear plates 213, and the mounting ear plates 213 are fixed to the mounting posts 301 by male threaded connectors (not shown in the figure); all rotary switch plates 220 are provided with torque transmission holes 225.

[0056] Each switch driver 210 may have a pair of mounting ears 213, the connection of the pair of mounting ears 213 passing through the axis of the switch driver 210, and the male threaded connector may be a stud, bolt or screw, etc., and in the air conditioning field, a screw is preferred.

[0057] By setting mounting posts 301 to install switch drive units 210, the height of the power output shaft 211 of each switch drive unit 210 can be increased, making it possible for one end of the rotary switch plate 220 to pass through the wall of the exhaust duct 300 and the waste air return duct 400 before connecting to the power output shaft 211. This allows all rotary switch plates 220 in the same louvered switch 200, regardless of whether they are directly connected to the switch drive unit 210, to adopt the same shape, structure, and size, thereby reducing the assembly complexity of the product.

[0058] like Figure 1 and Figure 2 As shown, preferably, the switch drive 210 is an electric motor, and the line connecting the mounting post 301 on a waste air return duct 400 or an air outlet duct 300 is arranged at a right angle to the arrangement direction of the rotary switch plate 220 pivotally connected to the same waste air return duct 400 or air outlet duct 300.

[0059] Generally, the motor that drives the switch 210 has a wiring section 212. Viewed along the motor's axis, the wiring section 212 is offset from the mounting ear plate 213; otherwise, interference would occur between the wiring section 212 and the tool used to rotate the screw. The rotary switch plate 220 is arranged perpendicular to the airflow direction of the outlet duct 300 and the waste air return duct 400, i.e., along the circumference of the diversion cavity 100. Therefore, by setting the wiring of the mounting post 301 perpendicular to the arrangement direction of the diversion cavity 100, the motor wiring can be arranged approximately along the circumference of the outside of the diversion cavity 100. This provides more space for the wiring and reduces interference from the small space between the fresh air unit's casing and the diversion cavity 100. In other words, the size of the fresh air unit's casing can be appropriately reduced, thereby saving materials and lowering costs.

[0060] like Figure 5 and Figure 6 As shown, preferably, both the inner wall of the waste air return duct 400 and the inner wall of the air outlet duct 300 are provided with limiting ports 302, which are used to abut against the edge of one of the rotary switch plates 220.

[0061] By setting the limiting port 302, the fit between the edge of the rotary switch plate 220 and the inner wall of the waste air return pipe 400 and the inner wall of the air outlet pipe 300 can be improved, thus enhancing the sealing performance. It can also prevent the rotary switch plate 220 from rotating too much and wasting the switching time.

[0062] like Figure 1 and Figure 2 As shown, preferably, the switch driver 210 is mounted on the upper surface of the waste air return duct 400 or the air outlet duct 300.

[0063] Installing the switch driver 210 on the upper surface of the waste air return duct 400 or the air outlet duct 300 facilitates tightening or loosening of the male threaded connection with tools, and also facilitates wiring of the switch driver 210, such as a motor, thereby improving the convenience and efficiency of installation and removal operations.

[0064] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, preferably, there are three exhaust ducts 300 and one waste air return duct 400. The waste air return duct 400 is arranged at a 90° angle to the adjacent exhaust duct 300, and the three exhaust ducts 300 are spaced 90° apart.

[0065] By arranging the air outlet duct 300 and the waste air return duct 400 in this way, fresh air can be supplied from the front, left and right directions of the fresh air unit. Furthermore, the louvered switches 200 are used to control the fresh air supply and volume in each of the three directions, thereby improving the user experience.

[0066] Example 2:

[0067] Figure 7 This is a schematic diagram of the fresh air outlet control device provided in Embodiment 2 of the present invention in the open state of the louvered switch. Figure 7 As shown, Embodiment 2 also provides a fresh air ventilator, including the aforementioned fresh air outlet control device.

[0068] By installing the aforementioned fresh air outlet control device in the fresh air unit, the fresh air unit accordingly possesses all the advantages of the aforementioned fresh air outlet control device, which will not be elaborated upon here.

[0069] Specifically, in addition to the aforementioned fresh air outlet control device, the fresh air unit also includes a fresh air fan 501, a fresh air duct 502, a waste air return duct 400, and a filter chamber 503. The outlet of the fan is connected to the diversion chamber 100, while the inlet of the fresh air fan 501 is connected to the outlet side of the filter chamber 503. The inlet side of the filter chamber 503 is connected to the fresh air duct 502. A waste air inlet valve 504 is installed on one side of the chamber. A filter such as a HEPA filter (not shown in the figure) can be installed in the filter chamber 503.

[0070] When the fresh air system is in its fresh air function, the louvered switches 200 controlling the air outlet duct 300 are in the ON state, while the louvered switches 200 controlling the waste air return duct 400 are closed. Fresh air entering from the fresh air duct 502 is filtered and, driven by the fresh air fan 501, enters the distribution chamber 100, from which it flows into the three air outlet ducts 300, supplying fresh air to the room. Meanwhile, the louvered switches 200 controlling the waste air return duct 400 are in the OFF state. When the fresh air system is in its waste air exhaust function, the louvered switches 200 controlling the three air outlet ducts 300 are in the OFF state, the louvered switches 200 controlling the waste air return duct 400 are open, the waste air inlet valve 504 is open, and the fresh air duct 502 and the filter chamber 503 are disconnected by a valve (not shown in the diagram). The indoor stale air enters the filter chamber 503 through the stale air inlet valve 504, and is driven by the fresh air fan 501 to be sent into the diversion chamber 100. It then enters the stale air return duct 400 through the drain outlet 120, and is finally discharged to the outside through the fresh air duct 502.

[0071] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

[0072] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0073] In the above embodiments, descriptions of directions such as "up" and "down" are based on the accompanying drawings.

[0074] The above description of the disclosed embodiments enables those skilled in the art to make or use the 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 invention.

[0075] 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 disclosed herein.

Claims

1. A fresh air outlet control device, characterized in that, It includes a diversion cavity (100), which has a drain port (120) and multiple air outlets (110). The drain port (120) is connected to a waste air return duct (400), and the air outlets (110) are connected to an air outlet duct (300). Each air outlet (110) or air outlet duct (300) is equipped with a louvered switch (200). Each drain port (120) or waste air return duct (400) is equipped with the louvered switch (200). The louvered switch (200) includes a switch driver (210) and multiple rotary switch plates (220), and the multiple rotary switch plates (220) are connected to the switch driver (210) in a transmission manner; Multiple rotary switch plates (220) are pivotally connected to the waste air return duct (400) or the air outlet duct (300), and multiple rotary switch plates (220) are pivotally connected to the connecting rod (230). Any two rotary switch plates (220), the connecting rod (230), and the waste air return duct (400) or the air outlet duct (300) pivotally connected to the connecting rod (230) form a parallelogram mechanism. Of the plurality of rotary switch plates (220), at least one of the rotary switch plates (220) has a torque transmission hole (225); the power output shaft (211) of the switch drive (210) is inserted into the torque transmission hole (225) and is circumferentially fixedly connected to the torque transmission hole (225).

2. The fresh air outlet control device according to claim 1, characterized in that, The outer surfaces of the waste air return duct (400) and the air outlet duct (300) are provided with mounting posts (301), the switch drive unit (210) is provided with mounting ear plate (213), and the mounting ear plate (213) is fixed to the mounting post (301) by male threaded connector; all of the rotary switch plates (220) are provided with torque transmission holes (225).

3. The fresh air outlet control device according to claim 2, characterized in that, The switch drive (210) is an electric motor. The line connecting the mounting post (301) on one of the waste air return pipes (400) or the air outlet pipes (300) is arranged at a right angle to the arrangement direction of the rotary switch plate (220) pivotally connected to the same waste air return pipe (400) or the air outlet pipe (300).

4. The fresh air outlet control device according to claim 1, characterized in that, The inner wall of the waste air return duct (400) and the inner wall of the air outlet duct (300) are both provided with a limiting port (302), which is used to abut against the edge of one of the rotary switch plates (220).

5. The fresh air outlet control device according to claim 1, characterized in that, The switch driver (210) is installed on the upper surface of the waste air return duct (400) or the air outlet duct (300).

6. The fresh air outlet control device according to any one of claims 1-5, characterized in that, There are three exhaust ducts (300) and one waste air return duct (400). The waste air return duct (400) is arranged at a 90° angle to the adjacent exhaust duct (300), and the three exhaust ducts (300) are spaced 90° apart.

7. A fresh air ventilator, characterized in that, The fresh air unit includes the fresh air outlet control device according to any one of claims 1-6.

Images