Fresh air opening protection device, fresh air opening and air conditioner

Abstract

The utility model provides a fresh air opening protection device, a fresh air opening and an air conditioner, relates to the technical field of air conditioners, and solves the technical problem that peculiar smell and dust easily enter a room due to long-term communication of the fresh air opening. The fresh air opening protection device is installed at a fresh air opening and comprises an opening blocking part, a connecting part and a driving source. The opening blocking part and the fresh air opening are the same in section shape, and the specification of the opening blocking part is not smaller than that of the fresh air opening. One end of the connecting part is connected with the driving source, and the other end is connected with the blocking part; the connecting part is provided with an avoiding structure which can avoid the electronic element in the rotating process; the driving source can drive the opening blocking part to horizontally rotate relative to the fresh air opening, so that the fresh air opening is opened or blocked and closed. The fresh air opening and closing device is used for opening and closing a fresh air opening, prevents howling from entering a room and is small in occupied space and easy to control.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a fresh air inlet protection device, a fresh air inlet, and an air conditioner. Background Technology

[0002] Floor-standing air conditioners with fresh air intake functions draw fresh outdoor air into the room through ductwork, powered by a motor and centrifugal fan. Since the connection between the fresh air duct and the air conditioner is constantly open, strong winds can enter through the ductwork when the wind picks up outside, creating a whistling sound. Additionally, if there are unpleasant odors outside, these odors can also enter the room through the fresh air duct. Both of these issues contribute to a poor user experience and lead to customer complaints. Utility Model Content

[0003] The purpose of this utility model is to provide a fresh air inlet protection device, a fresh air inlet, and an air conditioner to solve the technical problem in the prior art where fresh air inlets are constantly connected, making it easy for odors and dust to enter the room.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This utility model provides a fresh air inlet protection device, installed at the fresh air inlet, the fresh air inlet protection device including a baffle part, a connecting part, and a driving source; wherein:

[0006] The baffle has the same cross-sectional shape as the fresh air inlet, and the specifications of the baffle are not smaller than those of the fresh air inlet.

[0007] One end of the connecting part is connected to the driving source, and the other end is connected to the stop part;

[0008] The connecting part has a clearance structure to avoid electronic components during rotation;

[0009] The drive source can drive the baffle to rotate horizontally relative to the fresh air inlet, thereby opening or blocking the fresh air inlet.

[0010] This utility model's fresh air inlet protection device includes a baffle for opening or blocking fresh air, and a connecting part for connecting a drive source to the baffle. By incorporating a clearance structure within the connecting part, it can avoid electronic components near the fresh air inlet during rotation. This allows for installation in confined spaces. The device can be installed at the connection point between the fresh air duct and the indoor air conditioner. When the air conditioner is off, the drive source controls the baffle to rotate, blocking the fresh air duct opening. When the user turns on the air conditioner, the baffle opens accordingly, thus opening when the air conditioner is on and closing when it is off to block the fresh air inlet. This solves the problem of strong winds outside transmitting whistling noise indoors when the air conditioner is not in use, and the problem of outdoor air entering the room through the fresh air duct and affecting indoor air quality.

[0011] Based on the above technical solution, the present invention can be further improved as follows.

[0012] As a further improvement of this utility model, both the stop portion and the connecting portion are centrally symmetrical structures.

[0013] By adopting this structural design, the drive source can be installed at the center of the connection part, which makes it easy to control the position of the baffle part. The rotation angle of the drive source can be preset in the control system. When it is necessary to block the fresh air inlet, simply rotate the line connecting the widest part of the baffle part and the connection part to the fan-shaped angle corresponding to the connection point of the drive source. This structure achieves the minimum rotation angle, saves energy, and reduces space occupation. When rotating in the opposite direction, the same angle is still rotated, as long as one edge of the baffle part is attached to the edge of the fresh air inlet.

[0014] As a further improvement of this utility model, when the baffle and the connecting part are rotated to the point where the central symmetry line coincides with the center of the fresh air inlet, the outline of the end of the baffle that is away from the connecting part coincides with the outline of the fresh air inlet.

[0015] This structural design allows for a smaller size of the baffle, ensuring that it only needs to cover the fresh air inlet, thus reducing the external protrusion area, minimizing the footprint, and avoiding excessive space occupation that could affect surrounding electronic components.

[0016] As a further improvement of this utility model, the connecting part includes a connecting part, a clearance structure, and a base plate; wherein:

[0017] The connecting part is a tapered structure with one end larger than the other, and the larger end is connected to the stop part.

[0018] The avoidance structure is an L-shaped bend with a right angle or an obtuse angle, one end of which is connected to the connecting part and the other end of which is connected to the substrate; and the width of the connection between the avoidance structure and the connecting part is smaller than the width of the connecting part at the corresponding position.

[0019] The substrate has a triangular structure and is arranged parallel to the baffle portion;

[0020] The driving source is connected to the substrate via a transmission connection.

[0021] By setting a connecting part with a tapered structure and an overall V-shape, it is only necessary to block the fresh air inlet. This not only saves materials but also reduces the impact on the surrounding area and ensures the strength of the device.

[0022] As a further improvement of this utility model, the end of the substrate has a rounded transition structure.

[0023] The structural strength at the end of the substrate is increased by providing an arc transition structure.

[0024] As a further improvement of this utility model, the stop portion and the connecting portion are made of POM material.

[0025] The material used is POM (4520 / M90-44), a plastic raw material. POM is known as the "metal among plastics" because its strength and rigidity are close to those of metal. It has high tensile strength, elastic modulus, and elongation, enabling it to maintain shape stability under heavy loads. Furthermore, POM has a low coefficient of friction and excellent wear resistance, maintaining its dimensional temperature over a wide temperature range and resisting deformation. Since the fresh air inlet protective device consists of moving parts when opening and closing the inlet, POM's excellent self-lubricating properties reduce friction and wear.

[0026] As a further improvement of this utility model, the thickness of the stop portion is 2mm.

[0027] By making the baffle 2mm thick, not only is sufficient strength ensured so that it will not deform when closed, thus preventing problems with a poor seal, but the amount of material used can also be reduced as much as possible.

[0028] As a further improvement of this utility model, both sides of the bottom of the connecting part include a first transition section and a second transition section; the first transition section is V-shaped and the bottom is an arc transition structure; the second transition section is a straight section and is connected to the avoidance structure.

[0029] As a further improvement of this utility model, the thickness of the stop portion and the connecting portion may be the same or different.

[0030] As a further improvement of this utility model, the driving source is a stepper motor.

[0031] This utility model relates to a fresh air vent protection device. The obstruction section is larger than the fresh air duct and is controlled by a stepper motor. When the air conditioner is turned off, the stepper motor controls the obstruction section to rotate, blocking the fresh air duct opening. When the user turns on the air conditioner, the obstruction section opens accordingly, ensuring that it opens when the air conditioner is turned on and closes to block the fresh air vent when it is turned off. This solves the problem of howling wind generated by strong winds outside transmitting into the room when the air conditioner is not in use, and the problem of outdoor air entering the room through the fresh air duct and affecting indoor air quality.

[0032] This utility model provides a fresh air inlet, including a fresh air inlet and a fresh air inlet protective device installed next to the fresh air inlet, through which the fresh air inlet can be opened or closed.

[0033] The present invention provides an air conditioner, including the aforementioned fresh air inlet.

[0034] As a further improvement of this utility model, the air conditioner is a cabinet air conditioner.

[0035] This utility model discloses a cabinet air conditioner with a fresh air function. A fresh air inlet protection device is installed at the rear of the unit where it connects to the fresh air duct. The inlet is larger than the duct and is controlled by a stepper motor. When the air conditioner is turned off, the stepper motor rotates the inlet to block the fresh air duct opening. When the user turns on the air conditioner, the inlet opens, thus ensuring it opens when the air conditioner is turned on and closes when it is turned off. This solves the problem of strong winds outside transmitting whistling noise into the room when the air conditioner is not in use, and the problem of outdoor air entering the room through the fresh air duct and affecting indoor air quality. Attached Figure Description

[0036] 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, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a front view of one embodiment of the new air inlet protection device of this utility model;

[0038] Figure 2 This is a side view of one embodiment of the new air inlet protection device of this utility model;

[0039] Figure 3 This is a diagram showing the state of the fresh air inlet protection device when the fresh air inlet is opened;

[0040] Figure 4 This is a diagram showing the state of the fresh air inlet protection device when the fresh air inlet is closed.

[0041] Figure 5 This is a schematic diagram of the rear structure of the air conditioner of this utility model.

[0042] In the figure: 1. Baffle; 2. Connecting part; 21. First transition section; 22. Second transition section; 3. Avoidance structure; 4. Base plate; 5. Shaft hole; 6. Stepper motor; 100. Fresh air inlet; 200. Air inlet panel; 300. Fresh air inlet protection device; 400. Fresh air duct. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0044] like Figures 1-4 As shown, this utility model provides a fresh air inlet protection device 300, installed at the fresh air inlet 100, capable of opening or blocking / closing the fresh air inlet 100; specifically, in this embodiment, the fresh air inlet protection device 300 includes a baffle portion 1, a connecting portion, and a driving source; wherein:

[0045] The baffle portion 1 has the same cross-sectional shape as the fresh air inlet 100, and the specifications of the baffle portion 1 are not smaller than those of the fresh air inlet 100; for example Figure 3 As shown, the fresh air inlet 100 is a circular opening, as... Figure 1 and Figure 4 As shown, the baffle 1 is also circular. It should be noted that the outline of the baffle 1 can be composed of arc segments of one radius or multiple arc segments of different radii. The specific form can be selected according to actual needs. Different schemes are chosen because of the electronic components near the fresh air inlet 100 on the back of the air conditioner. One reason is to minimize the space occupied on the back of the air conditioner, and the other is to reduce the amount of material used. As long as the fresh air inlet 100 can be covered.

[0046] One end of the connecting part is connected to the drive source, and the other end is connected to the stop part 1;

[0047] The connecting part has a clearance structure 3, which can avoid electronic components passing through during rotation. Another function of the clearance structure 3 is that when the fresh air inlet 100 protrudes and there is a height difference between the installation position of the drive source and the end of the fresh air inlet 100, the clearance structure 3 can be used to raise the installation surface, thereby ensuring that the baffle part 1 can effectively block and close the fresh air inlet 100. The clearance structure 3 not only avoids surrounding electronic components, but also ensures a good blocking effect.

[0048] like Figure 3 and Figure 4 The diagrams shown are structural diagrams of the fresh air inlet 100 in the open state and the fresh air inlet 100 in the closed state, respectively. The drive source can drive the baffle part 1 to rotate horizontally relative to the fresh air inlet 100, thereby opening or blocking the fresh air inlet 100.

[0049] This utility model's fresh air inlet protection device includes a baffle 1 for opening or blocking the fresh air inlet 100, and a connecting part for connecting the drive source to the baffle 1. By providing a clearance structure 3 in the connecting part, it can avoid electronic components near the fresh air inlet 100 during rotation. The fresh air inlet protection device can be installed in narrow spaces. This air inlet protection device can be installed at the connection between the fresh air duct and the indoor air conditioner. When the air conditioner is turned off, the drive source controls the baffle to rotate and block the fresh air duct opening. When the user turns on the air conditioner, the baffle opens accordingly, thus opening when the air conditioner is turned on and closing and blocking the fresh air inlet when it is turned off. This solves the problem of strong winds outside transmitting the whistling sound into the room when the air conditioner is not in use, and the problem of outdoor air entering the room through the fresh air duct and affecting indoor air quality.

[0050] like Figure 1 and Figure 4 As shown, as a further improvement of this utility model, both the baffle portion 1 and the connecting portion are centrally symmetrical structures. That is, the air vent protection device 300 of this utility model is a centrally symmetrical structure, arranged symmetrically on both sides with a central symmetry line as the center. The driving source is connected to the central symmetry line of the connecting portion.

[0051] By adopting this structural design, the drive source can be installed at the center of the connection part, which makes it easy to control the position of the baffle part. The rotation angle of the drive source can be preset in the control system. When it is necessary to block the fresh air inlet, simply rotate the line connecting the widest part of the baffle part and the connection part to the fan-shaped angle corresponding to the connection point of the drive source. This structure achieves the minimum rotation angle, saves energy, and reduces space occupation. When rotating in the opposite direction, the same angle is still rotated, as long as one edge of the baffle part is attached to the edge of the fresh air inlet.

[0052] As a further improvement to this utility model, such as Figure 4 As shown, when the baffle part 1 and the connecting part are rotated to the point where the central symmetry line coincides with the center of the fresh air inlet 100, the outline of the end of the baffle part 1 away from the connecting part coincides with the outline of the fresh air inlet 100.

[0053] This structural design allows for a smaller size of the baffle, ensuring that it only needs to cover the fresh air inlet, thus reducing the external protrusion area, minimizing the footprint, and avoiding excessive space occupation that could affect surrounding electronic components.

[0054] As a further improvement to this utility model, such as Figure 1 , Figure 2 and Figure 3 As shown, the connecting part includes a connecting part 2, a clearance structure 3, and a base plate 4; wherein:

[0055] The connecting part 2 is a tapered structure with one end larger than the other, and the larger end is connected to the stop part 1; specifically, the connecting part 2 is V-shaped with straight sides.

[0056] The avoidance structure 3 is an L-shaped bend with a right angle or an obtuse angle, one end of which is connected to the connecting part 2 and the other end is connected to the base plate 4; and the width of the connection between the avoidance structure 3 and the connecting part 2 is smaller than the width of the connecting part 2 at the corresponding position; it should be noted that the bending direction of the avoidance structure 3 is perpendicular to the plate surface direction of the baffle part 1, that is, it extends and bends along the central axis of the baffle part 1.

[0057] The substrate 4 has a triangular structure and is arranged parallel to the baffle portion 1;

[0058] The drive source is connected to the base plate 4 via a transmission connection.

[0059] By setting the connecting part 2, which has a tapered structure and is V-shaped, it is sufficient to block the fresh air inlet 100. This not only saves materials but also reduces the impact on the surrounding area and ensures the strength of the device.

[0060] like Figure 4 As shown, the baffle 1 is a circular structure exceeding half its length, effectively blocking most of the fresh air inlet 100. The connecting part 2 connects to the edge of the baffle 1, thus blocking a small portion of the fresh air inlet 100. The connecting part 2 not only partially blocks the fresh air inlet 100 but also strengthens the fresh air inlet protection device 300. If the baffle 1 were a complete circle with a rod-like structure connected to its bottom, it would also block the fresh air inlet 100, but due to the thinner rod, its strength would be insufficient compared to the connecting part 2, making it prone to deformation and resulting in the fresh air inlet protection device 300 failing to properly seal the fresh air inlet 100.

[0061] like Figures 1-4 As shown, as a further improvement of this utility model, the end of the substrate 4 has a rounded transition structure.

[0062] The structural strength at the end of substrate 4 is increased by providing an arc transition structure.

[0063] The reason for using a rounded transition structure to increase strength is that the rounded structure facilitates the flow of molten plastic during injection molding, reduces internal defects (such as bubbles and shrinkage marks), and thus improves overall density and strength. Rounded transitions typically increase the moment of inertia of the cross-section (especially the flexural section modulus), thereby improving the part's resistance to bending and torsion. Considering that rounded structures in injection molded parts can increase strength, in this embodiment, all corners are rounded transition structures.

[0064] As a further improvement of this utility model, the stop and the connecting part are made of POM material.

[0065] The material used is POM (4520 / M90-44), a plastic raw material. POM is known as the "metal among plastics" because its strength and rigidity are close to those of metal. It has high tensile strength, elastic modulus, and elongation, enabling it to maintain shape stability under heavy loads. Furthermore, POM has a low coefficient of friction and excellent wear resistance, maintaining its dimensional temperature over a wide temperature range and resisting deformation. Since the fresh air inlet protective device consists of moving parts when opening and closing the inlet, POM's excellent self-lubricating properties reduce friction and wear.

[0066] As a further improvement of this utility model, the thickness of the stop portion is 2mm. The thickness of the stop portion 1 is approximately 2mm. It cannot be too thin to avoid insufficient strength, which could cause the stop portion 1 to deform when closed, resulting in an incomplete seal.

[0067] The bottom sides of the connecting part 2 include a first transition section 21 and a second transition section 22; the first transition section 21 is V-shaped and the bottom is a rounded transition structure; the second transition section 22 is a straight section and is connected to the avoidance structure 3.

[0068] By setting the thickness of the stop part 1 to 2mm, not only is sufficient strength guaranteed so that it will not deform when closed, thus preventing the problem of poor sealing, but the amount of material used can also be reduced as much as possible.

[0069] Furthermore, in this embodiment, the thickness of the stop portion 1 and the connecting portion is the same.

[0070] Of course, a structural design with different thicknesses for the stop part 1 and the connecting part can also be adopted. The part with high strength requirements can be designed to be thicker, while the part with low strength requirements can be designed to be thinner, thereby saving costs while ensuring strength.

[0071] like Figures 1-5 As shown, in this embodiment, the driving source is a stepper motor 6.

[0072] This utility model relates to a fresh air vent protection device. The obstruction section is larger than the fresh air duct and is controlled by a stepper motor. When the air conditioner is turned off, the stepper motor controls the obstruction section to rotate, blocking the fresh air duct opening. When the user turns on the air conditioner, the obstruction section opens accordingly, ensuring that it opens when the air conditioner is turned on and closes to block the fresh air vent when it is turned off. This solves the problem of howling wind generated by strong winds outside transmitting into the room when the air conditioner is not in use, and the problem of outdoor air entering the room through the fresh air duct and affecting indoor air quality.

[0073] like Figure 5 As shown, the present invention provides a fresh air vent, including a fresh air vent 100 and a fresh air vent protective device 300 installed next to the fresh air vent 100. The fresh air vent 100 can be opened or closed by the fresh air vent protective device 300.

[0074] In this embodiment, the fresh air inlet 100 is located behind the air conditioner and is connected to the outside through the fresh air duct 400.

[0075] like Figure 5 As shown, the present invention provides an air conditioner including the aforementioned fresh air vent 100.

[0076] like Figure 5 As shown, in this embodiment, the air conditioner is a cabinet air conditioner.

[0077] The rear of the cabinet air conditioner includes an air inlet panel 200, a fresh air vent 100 located below the air inlet panel 200, and a fresh air vent protective device 300 installed next to the fresh air vent 100; the fresh air vent 100 is connected to the outside through a fresh air duct 400.

[0078] The fresh air inlet protection device 300 includes a baffle portion 1, a connecting portion 2, a clearance structure 3, and a base plate 4. The size of the main shielding portion of the fresh air inlet protection device 300 matches the diameter of the fresh air duct 400, which is to say, it matches the diameter of the fresh air inlet 100. The size of the baffle portion 1 and the connecting portion 2 is slightly larger than the fresh air inlet 100, and they need to completely cover the duct opening.

[0079] The structural design of the stop part 1 and the connecting part 2 is as follows: the upper part (stop part 1) is circular for shielding, and the lower part (connecting part 2) saves materials and reduces costs; the structure limits space, and if the design is too large, there will be interference problems, affecting rotation. The connecting part 2 is V-shaped, which ensures strength while providing shielding.

[0080] The substrate 4 has a shaft hole 5 for mounting the stepper motor 6. During installation, the motor shaft of the stepper motor 6 is inserted into the shaft hole 5, so that the two are the same size and fit tightly after assembly.

[0081] A stepper motor mounting hole is designed next to the fresh air vent 100 on the rear side of the unit. This hole is used to install and fix the stepper motor. After installation, the motor shaft faces upwards to facilitate mounting into the shaft hole 5 of the base plate 4. Figure 3 As shown, when the fresh air function is turned on, the stepper motor 6 operates, and the motor shaft rotates to drive the fresh air inlet protection device 300 to rotate, moving the baffle part 1 and the connecting part 2 to the blank area (fully exposing the fresh air inlet 100).

[0082] When the fresh air function is turned off or the air conditioner is turned off, the stepper motor 6 starts to work. The motor shaft rotates and drives the fresh air inlet protection device 300 to rotate. When the baffle part 1 and the connecting part 2 move to completely block the fresh air inlet 100, the rotation stops.

[0083] This utility model relates to a cabinet air conditioner with a fresh air function. A fresh air inlet protection device is installed at the rear of the unit where it connects to the fresh air duct. The inlet is larger than the duct and is controlled by a stepper motor. When the air conditioner is turned off, the stepper motor rotates the inlet to block the fresh air duct opening. This solves the problem of the fresh air duct being left unsealed after installation, allowing strong winds to enter the air conditioner and create a whistling sound, as well as the problem of outdoor air constantly entering the room through the duct. When the user turns on the air conditioner, the inlet opens, ensuring it is open when the air conditioner is on and closed when it is off. This solves the problem of strong winds transmitting whistling sound into the room when the air conditioner is not in use, and the problem of outdoor air entering the room through the duct and affecting indoor air quality.

[0084] First, it should be noted that "inward" refers to the direction towards the center of the storage space, while "outward" refers to the direction away from the center of the storage space.

[0085] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0086] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0087] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0088] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0089] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0090] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A novel air vent protection device, characterized in that, Installed at the fresh air inlet, the fresh air inlet protection device includes a baffle, a connecting part, and a driving source; wherein: The baffle has the same cross-sectional shape as the fresh air inlet, and the specifications of the baffle are not smaller than those of the fresh air inlet. One end of the connecting part is connected to the driving source, and the other end is connected to the stop part; The connecting part has a clearance structure to avoid electronic components during rotation; The drive source can drive the baffle to rotate horizontally relative to the fresh air inlet, thereby opening or blocking the fresh air inlet.

2. The fresh air inlet protection device according to claim 1, characterized in that, Both the stop portion and the connecting portion are centrally symmetrical structures.

3. The fresh air inlet protection device according to claim 2, characterized in that, When the baffle and the connecting part are rotated to the point where the central symmetry line coincides with the center of the fresh air inlet, the outline of the end of the baffle that is away from the connecting part coincides with the outline of the fresh air inlet.

4. The fresh air inlet protection device according to claim 2, characterized in that, The connecting portion includes a connecting part, a clearance structure, and a substrate; wherein: The connecting part is a tapered structure with one end larger than the other, and the larger end is connected to the stop part. The avoidance structure is an L-shaped bend with a right angle or an obtuse angle, one end of which is connected to the connecting part and the other end of which is connected to the substrate; and the width of the connection between the avoidance structure and the connecting part is smaller than the width of the connecting part at the corresponding position. The substrate has a triangular structure and is arranged parallel to the baffle portion; The driving source is connected to the substrate via a transmission connection.

5. The fresh air inlet protection device according to claim 4, characterized in that, The end of the substrate has a rounded transition structure.

6. The fresh air inlet protection device according to claim 1, characterized in that, The stop portion and the connecting portion are made of POM material.

7. The fresh air inlet protection device according to claim 1, characterized in that, The thickness of the baffle is 2mm.

8. The fresh air inlet protection device according to claim 1, characterized in that, The thickness of the stop portion and the connecting portion may be the same or different.

9. A new type of air vent, characterized in that, It includes a fresh air inlet and a fresh air inlet protection device as described in any one of claims 1-8 installed next to the fresh air inlet, through which the fresh air inlet can be opened or closed.

10. An air conditioner, characterized in that, Including the new air inlet as described in claim 9.

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