Rat-proof joint, fresh air module and air conditioner

Abstract

The utility model discloses a kind of rat-proof connector, fresh air module and air conditioner, it is related to air conditioner technical field, wherein, rat-proof connector includes the first cylinder section and the second cylinder section connected, and grille, the first cylinder section can be connected to a fresh air pipe, the fresh air pipe is used to connect the fresh air interface of air conditioner, the second cylinder section can be connected to another fresh air pipe, the radial section of the second cylinder section in its extension direction is continuous annular surface;Grille is located at the end of the second cylinder section away from the first cylinder section;The technical scheme provided by the utility model can improve the structural stability of rat-proof connector as a whole.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, and in particular to a rodent-proof connector, a fresh air module, and an air conditioner. Background Technology

[0002] In related technologies, in order to meet users' requirements for air quality, air conditioners (such as indoor air conditioners, integrated air conditioners, or fresh air systems) are equipped with a fresh air function to guide fresh outdoor air into the room.

[0003] Specifically, air conditioners introduce outdoor air through fresh air ducts that extend to the outside. These ducts are usually equipped with metal protective mesh to prevent rats, insects, or other debris from entering. However, the structure of the metal protective mesh is unstable, resulting in poor overall assembly stability. Utility Model Content

[0004] The main purpose of this utility model is to propose a rodent-proof connector, a fresh air module, and an air conditioner, aiming to improve the overall structural stability of the rodent-proof connector.

[0005] To achieve the above objectives, the rodent-proof connector proposed in this utility model includes:

[0006] A first cylindrical section and a second cylindrical section are connected. The first cylindrical section can be connected to a fresh air duct, which is used to connect to the fresh air inlet of an air conditioner. The second cylindrical section can be connected to another fresh air duct. The radial cross-section of the second cylindrical section in its extending direction is a continuous annular surface.

[0007] A grid is provided at the end of the second cylindrical section away from the first cylindrical section.

[0008] In one embodiment, the grid includes a central ring rib and a plurality of ribs spaced circumferentially along the central ring rib, the ribs being connected from the central ring rib to the inner wall of the second cylindrical section.

[0009] In one embodiment, the reinforcing rib extends in the inner diameter direction of the second cylindrical section;

[0010] And / or, the shape of the central annular rib is circular.

[0011] In one embodiment, the inner ring diameter of the central ring rib is d1, where d1 < 10 mm;

[0012] And / or, the radial thickness of the central ring rib is d2, 1mm≤d2≤2.5mm;

[0013] And / or, the radial length of the rib is s1, where s1 < 10 mm;

[0014] And / or, the radial width of the rib is s2, 1mm≤s2≤2.5mm.

[0015] In one embodiment, the grille is perpendicular to the axis of the second cylindrical section.

[0016] In one embodiment, the grille is disposed obliquely within the second cylindrical section.

[0017] In one embodiment, the tilt angle of the grille is θ, where 10°≤θ≤45°.

[0018] In one embodiment, the grille and the second cylindrical section are integrally formed;

[0019] And / or, the wall thickness of both the first and second cylindrical sections is h, where 1.5mm ≤ h ≤ 2.5mm;

[0020] And / or, the rodent-proof connector further includes a limiting ring, which is connected to the outer surface of either the first cylindrical section or the second cylindrical section to abut against the inlet of the fresh air duct.

[0021] In one embodiment, the rodent-proof connector is fixed to the fresh air duct via a connecting structure;

[0022] The connection structure is configured as a threaded structure formed between the rodent-proof connector and the fresh air duct; or the connection structure is configured as tape for wrapping around the connection position between the rodent-proof connector and the fresh air duct.

[0023] This utility model also proposes a fresh air module, which includes the rodent-proof connector described above.

[0024] This utility model also proposes an air conditioner, which includes the rodent-proof connector as described above; or the fresh air module as described above.

[0025] In the technical solution of this utility model, compared with the spiral metal protective mesh being rotated and installed onto the fresh air duct, a grille is directly set on the second section. This not only improves the overall structural stability of the rodent-proof connector, but also reduces the number of parts in the rodent-proof connector, improving assembly efficiency. Furthermore, by setting the grille at the end of the second section away from the first section, it prevents debris from accumulating inside the rodent-proof connector and also prevents rats, insects, or other debris from entering the fresh air duct, thereby effectively improving the air intake effect of the fresh air duct and enhancing the reliability of the air conditioner. At the same time, it can also connect the two fresh air ducts, extending the overall length of the fresh air duct.

[0026] The second section has a continuous annular cross-section perpendicular to its extension direction. This means that the airflow through the rodent-proof connector only flows through the air passage holes on the grille, and the wall of the second section does not have any air passage holes. This not only increases the effective connection area between the second section and the fresh air duct, but also prevents airflow from flowing into the space between the second section and the fresh air duct through the air passage holes in the wall of the second section, thus avoiding whistling and reliably reducing noise. Attached Figure Description

[0027] 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 the structures shown in these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the structure of an embodiment of the rodent-proof connector provided by this utility model connected to a fresh air duct;

[0029] Figure 2 for Figure 1 A cross-sectional view of the structure shown;

[0030] Figure 3 A cross-sectional view of an embodiment of the rodent-proof connector provided by this utility model connected to two fresh air ducts;

[0031] Figure 4 A schematic diagram of the structure of an embodiment of the rodent-proof connector provided by this utility model;

[0032] Figure 5 for Figure 4 Top view of the rodent-proof connector;

[0033] Figure 6 for Figure 5 A cross-sectional view of the rodent-proof connector, cut along section line AA.

[0034] Explanation of icon numbers:

[0035] 10. Fresh air duct; 11. Air inlet; 12. Air outlet; 20. Rodent-proof connector; 21. Air inlet channel; 22. Duct body; 221. First duct section; 222. Second duct section; 23. Limiting ring; 30. Grille; 31. Central ring rib; 32. Rib.

[0036] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0038] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0039] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0040] In related technologies, in order to meet users' requirements for air quality, air conditioners (such as indoor air conditioners, integrated air conditioners, or fresh air systems) are equipped with a fresh air function to guide fresh outdoor air into the room.

[0041] Specifically, air conditioners introduce outdoor air through fresh air ducts that extend to the outside. These ducts are usually equipped with metal protective mesh to prevent rats, insects, or other debris from entering. However, the structure of the metal protective mesh is unstable, resulting in poor overall assembly stability.

[0042] To solve this technical problem, this utility model proposes a rodent-proof connector 20.

[0043] Please see Figures 1 to 6In one embodiment of this utility model, the rodent-proof connector 20 includes a first cylindrical section 221 and a second cylindrical section 222 connected together, and a grille 30. The first cylindrical section 221 can be connected to a fresh air duct 10, which is used to connect to the fresh air interface of an air conditioner. The second cylindrical section 222 can be connected to another fresh air duct 10. The radial cross-section of the second cylindrical section 222 in its extending direction is a continuous annular surface. The grille 30 is disposed at the end of the second cylindrical section 222 away from the first cylindrical section 221. This improves the overall structural stability of the rodent-proof connector 20 and effectively enhances the rodent-proof effect of the fresh air duct.

[0044] In the technical solution of this utility model, compared with the spiral metal protective mesh being rotated and installed on the fresh air duct 10, the grille 30 is directly set on the second cylindrical section 222. This can not only improve the overall structural stability of the rodent-proof connector 20, but also reduce the number of parts of the rodent-proof connector 20 and improve assembly efficiency. Furthermore, by setting the grille 30 at the end of the second cylindrical section 222 away from the first cylindrical section 221, it can prevent debris from accumulating inside the rodent-proof connector 20 and prevent rats, insects or other debris from entering the fresh air duct 10. This can effectively improve the air intake effect of the fresh air duct 10, improve the reliability of the air conditioner, and at the same time, it can connect the two fresh air ducts 10, thereby extending the overall length of the fresh air duct 10.

[0045] The second cylindrical section 222 has a continuous annular cross-section perpendicular to its extension direction. This means that the airflow through the rodent-proof connector 20 only flows through the air passage holes on the grille 30, and the cylindrical wall of the second cylindrical section 222 does not have any air passage holes. This not only increases the effective connection area between the second cylindrical section 222 and the fresh air duct 10, but also prevents airflow from flowing into the space between the second cylindrical section 222 and the fresh air duct 10 through the air passage holes in the cylindrical wall of the second cylindrical section 222, thus avoiding whistling and reliably reducing noise.

[0046] Specifically, such as Figures 2 to 3 As shown, the rodent-proof connector 20 includes a cylindrical body 22, which includes a first cylindrical section 221 and a second cylindrical section 222 connected to each other. The cylindrical body 22 (the first cylindrical section 221 and the second cylindrical section 222) is a hollow structure, so that an air inlet channel 21 connecting to the fresh air duct 10 is formed inside. The lengths of the first cylindrical section 221 and the second cylindrical section 222 can be equal or unequal in the axial direction of the cylindrical body 22. The cross-sectional shape of the cylindrical body 22 is annular, or the outline is including but not limited to a circle or a rectangle.

[0047] More specifically, in the embodiments of this utility model, the wall thickness of both the first cylindrical section 221 and the second cylindrical section 222 is h, where 1.5mm ≤ h ≤ 2.5mm. This ensures uniform wall thickness, improves the structural stability of the cylindrical body 22, and reduces the overall weight of the rodent-proof connector 20. Specific values ​​for the wall thickness h of the cylindrical body 22 include, but are not limited to, 1.5mm, 1.7mm, 1.8mm, 2mm, 2.2mm, 2.3mm, 2.4mm, and 2.5mm.

[0048] The grille 30 is located at the end of the second duct section 222 away from the first duct section 221 and away from the fresh air inlet. In this case, the end face of the grille 30 facing away from the fresh air inlet can be positioned close to the opening of the second duct section 222. For example, this end face can be flush with the surface where the opening of the second duct section 222 is located, thereby reducing the accumulation of debris at the connection between the second duct section 222 and the grille 30. Alternatively, an assembly gap can be left between this end face and the surface where the opening of the second duct section 222 is located. Specifically, the grille 30 and the second duct section 222 are integrally formed. The rodent-proof connector 20 and the grille 30 can be integrally molded or fixed into a whole by welding, snap-fit ​​connection, or other methods, simplifying the number of parts and assembly steps for installing the rodent-proof connector 20 into the fresh air duct 10.

[0049] Furthermore, since both the first cylindrical section 221 and the second cylindrical section 222 can be used to connect the fresh air duct 10, on the one hand, the rodent-proof connector 20 is coaxial and parallel with the fresh air duct 10, or further, the rodent-proof connector 20 is inserted into the fresh air duct 10, and then the connecting structure (not shown in the figure) connects the rodent-proof connector 20 and the fresh air duct 10 to further fix the fresh air duct 10 and the rodent-proof connector 20, thereby enhancing the connection strength between the rodent-proof connector 20 and the fresh air duct 10. On the other hand, the other end of the rodent-proof connector 20 can also be connected to the fresh air duct 10. In this case, in the area where the grille 30 is provided... In addition to preventing rats, insects, or other debris from entering the fresh air duct 10, the rodent-proof connector 20 also serves to extend the connection. That is, both ends of the rodent-proof connector 20 are connected to the fresh air duct 10. The connection structure can be set at the connection position between the two fresh air ducts 10 and the rodent-proof connector 20, or two connection structures can be used to connect the two fresh air ducts 10 to the corresponding connection positions at both ends of the rodent-proof connector 20, so as to achieve relative fixation of the two fresh air ducts 10 and one rodent-proof connector 20, thereby extending the overall length of the fresh air duct 10 and improving the flexibility of the air conditioner's installation position.

[0050] Specifically, such as Figure 2As shown, a fresh air duct 10 is provided. The first section 221 is inserted into the air inlet 11 of the fresh air duct 10, and the second section 222 protrudes from the fresh air duct 10 and is provided with a grille 30. At this time, the rodent-proof connector 20 with the grille 30 plays the role of preventing rats, insects or other debris from entering the fresh air duct; and the grille 30 is set in the second section 222 to prevent foreign objects from entering the rodent-proof connector 20.

[0051] like Figure 3 As shown, there are two fresh air ducts 10. The outlet 12 of one fresh air duct 10 is connected to the fresh air interface, and the inlet 11 of the other fresh air duct 10 is inserted with a first cylindrical section 221. The second cylindrical section 222 is inserted into the outlet 12 of the other fresh air duct 10. The second cylindrical section 222 is provided with a grille 30. At this time, the rodent-proof connector 20 with the grille 30 not only prevents rats, insects or other debris from entering the fresh air duct 10, but also connects the two fresh air ducts 10, thereby extending the overall length of the fresh air duct 10.

[0052] Please see Figure 1 , Figures 4 to 5 In an embodiment of this utility model, the grille 30 includes a central ring rib 31 and a plurality of ribs 32 arranged circumferentially along the central ring rib 31. The ribs 32 are connected from the central ring rib 31 to the inner wall of the second cylindrical section 222. In this way, compared with a spiral-shaped metal protective net that gradually narrows at the end and is rotated and installed into the fresh air duct 10, the gap between part of the metal protective net and the pipe wall of the fresh air duct 10 gradually increases, causing whistling when the fresh air duct is ventilated. One end of the rib 32 is connected to the central ring rib 31 and the other end is connected to the inner wall of the second cylindrical section 222, so that no angle is formed between the rib 32 and the inner wall of the second cylindrical section 222, effectively avoiding the generation of whistling, reducing noise, and improving the comfort of using the fresh air duct 10. The shape of the central ring rib 31 includes, but is not limited to, a circle, a rectangle, or a polygon, in order to reduce whistling caused by sharp corners. Specifically, in this embodiment, the central ring rib 31 is circular, and the cross-sectional shape of the cylinder body 22 is annular. Specifically, the cross-sectional shape of the second cylinder segment 222 is annular, which can be concentrically set with the circular central ring rib 31, making it easy to manufacture and process.

[0053] Please see Figure 5 In an embodiment of this utility model, the rib 32 extends in the inner diameter direction of the second cylindrical section 222. At this time, the angle between the rib 32 and the inner wall of the second cylindrical section 222 is a right angle. Compared with the angle between the rib 32 and the inner wall of the second cylindrical section 222 being an acute angle or an obtuse angle, it is less likely to produce a whistling sound, thereby reducing the generation of noise.

[0054] Please see Figure 5In this embodiment of the invention, the inner ring diameter of the central ring rib 31 is d1, where d1 < 10mm. This ensures the rodent and insect prevention effect of the grille 30 at the central ring rib 31, reducing the possibility of rats, insects, or other debris entering the fresh air duct 10 through the inner ring of the central ring rib 31. Simultaneously, it does not affect the airflow effect of the rodent-proof connector 20, ensuring the air intake volume of the air conditioner. The specific values ​​of the inner ring diameter d1 of the central ring rib 31 include, but are not limited to, 9.5mm, 9mm, 8.5mm, 8mm, 7.5mm, 7mm, 6.5mm, 6mm, 5.5mm, 5mm, 4.5mm, and 4mm. In this embodiment, the inner ring diameter d1 of the central ring rib 31 is equal to 9.5mm.

[0055] Please see Figure 5 In this embodiment of the invention, the radial thickness of the central ring rib 31 is d2, where 1mm ≤ d2 ≤ 2.5mm. This increases the air intake area at the grille 30 and improves the airflow of the air conditioner while ensuring the connection strength and stability of the central ring rib 31 and the rib 32. The specific values ​​of the radial thickness d2 of the central ring rib 31 include, but are not limited to, 1mm, 1.5mm, 2mm, and 2.5mm. In this embodiment, the radial thickness d2 of the central ring rib 31 is equal to 1.5mm.

[0056] Please see Figure 5 In this embodiment of the invention, the radial length of the rib 32 is s1, where s1 < 10 mm. This ensures the rodent and insect prevention effect of the grille 30 at the air passage formed by the inner wall of the second cylindrical section 222, the rib 32, and the central ring rib 31, reducing the possibility of rats, insects, or other debris entering the fresh air duct 10 through this air passage. Simultaneously, it does not affect the air passage effect of the rodent-proof connector 20, ensuring the air intake volume of the air conditioner. The specific values ​​of the radial length s1 of the rib 32 include, but are not limited to, 9.5 mm, 9 mm, 8.5 mm, 8 mm, 7.5 mm, 7 mm, 6.5 mm, 6 mm, 5.5 mm, 5 mm, 4.5 mm, and 4 mm.

[0057] Please see Figure 5 In this embodiment of the invention, the radial width of the rib 32 is s2, where 1mm ≤ s2 ≤ 2.5mm. This increases the air intake area at the grille 30 and improves the airflow of the air conditioner while ensuring the connection strength and stability between the rodent-proof connector 20 and the grille 30. The specific values ​​of the radial width s2 of the rib 32 include, but are not limited to, 1mm, 1.5mm, 2mm, and 2.5mm. In this embodiment, the radial width s2 of the rib 32 is equal to 1.5mm.

[0058] Please refer to 2 to 3. Figure 6In this embodiment of the invention, the grille 30 is perpendicular to the axis of the second cylindrical section 222. This vertically positioned grille 30 more effectively intercepts and filters airborne particles, reducing the amount of debris such as dust and debris entering the air conditioner through the fresh air duct 10. This reliably protects the fresh air duct 10 and the air conditioner. It also improves the structural stability of the fresh air duct 10 and enhances the ease of cleaning and maintenance of the grille 30 due to the absence of complex angles. The grille 30 can be positioned at the end of the second cylindrical section 222 and flush with its opening, reducing the accumulation of foreign objects at the connection between the opening of the second cylindrical section 222 and the grille 30.

[0059] Optionally, in an embodiment of the present invention, the grille 30 is inclinedly disposed within the second cylindrical section 222, that is, there is a certain angle between the grille 30 and the axial direction of the second cylindrical section 222. This helps to guide the airflow to pass through the grille 30 at a more appropriate angle and enter the second cylindrical section 222 and the fresh air duct 10, thereby dispersing the airflow impact force, alleviating local pressure fluctuations, and reducing the probability of high-frequency whistling.

[0060] Specifically, in this embodiment of the invention, the tilt angle of the grille 30 is θ, where 10° ≤ θ ≤ 45°. This significantly reduces noise and improves user comfort. Specifically, when the tilt angle is too small (θ < 10°), high-frequency turbulence and periodic pressure fluctuations are easily formed, leading to whistling. When the tilt angle is too large (θ > 45°), uneven airflow distribution is easily caused, further exacerbating local noise. Therefore, setting the tilt angle θ of the grille 30 between 10° and 45° effectively reduces high-frequency whistling. Of course, in other embodiments, the tilt angle of the grille 30 can be greater than 45°, or corresponding noise reduction and vibration damping measures can be used to eliminate noise.

[0061] Please see Figure 1In an embodiment of this utility model, the rodent-proof connector 20 further includes a limiting ring 23. The limiting ring 23 extends along the outer circumferential surface of the cylindrical body 22 and is used to abut against the opening of the fresh air duct 10. Thus, when the rodent-proof connector 20 is installed on the fresh air duct 10, the limiting ring 23 abuts against the opening of the fresh air duct 10 to prevent further movement of the rodent-proof connector 20 on the fresh air duct 10, thereby playing a limiting role. Compared with the related technology where the metal protective mesh is rotated and assembled onto the fresh air duct 10 by hand, i.e., the positioning is insufficient or non-positioning, the setting of the limiting ring 23 can improve the consistency of the installation position of the rodent-proof connector 20 on the fresh air duct 10. The limiting ring 23 can be a complete ring structure or a ring structure with a break. The limiting ring 23 is connected to the outer surface of either the first cylindrical section 221 or the second cylindrical section 222. For example, the limiting ring 23 is located on the outer peripheral surface of the first cylindrical section 221, or on the outer peripheral surface of the second cylindrical section 222, or at the connection position of the first cylindrical section 221 and the second cylindrical section 222.

[0062] Optionally, in an embodiment of this utility model, the rodent-proof connector 20 is fixed to the fresh air duct 10 through a connecting structure; in order to further improve the connection stability between the rodent-proof connector 20 and the fresh air duct 10, ensure the overall structural stability and rodent-proof effect of the fresh air duct 10, and improve the performance of the air conditioner.

[0063] In one embodiment, the connection structure is configured as a threaded structure formed between the rodent-proof connector 20 and the fresh air duct 10; that is, the outer wall of the cylinder body 22 is provided with an external thread, and the inner wall of the fresh air duct 10 is provided with an internal thread that mates with the external thread. By inserting the first cylinder section 221 and / or the second cylinder section 222 into and tightening it onto the fresh air duct 10, the rodent-proof connector 20 and the fresh air duct 10 can be further fixed relative to each other, making the connection convenient.

[0064] In another embodiment, the connecting structure is configured as tape, which is used to wrap around the connection position of the rodent-proof connector 20 and the fresh air duct 10. That is, by wrapping the tape around the outer wall of the fresh air duct 10, the outer wall of the limiting ring 23 and the outer wall of the second cylindrical section 222, the rodent-proof connector 20 and the fresh air duct 10 are further fixed relative to each other, which is convenient and low cost. However, this design is not limited to this. In other embodiments, the connecting accessories can be configured as clamps.

[0065] This utility model also proposes a fresh air module, which includes a rodent-proof connector 20. The specific structure of the rodent-proof connector 20 is as described in the above embodiments. Since this fresh air module adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0066] This utility model also proposes an air conditioner, which includes a rodent-proof connector 20 or a fresh air module. The specific structure of the rodent-proof connector 20 or the fresh air module is as described in the above embodiments. Since this air conditioner adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0067] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A rodent-proof connector, characterized in that, include: A first cylindrical section and a second cylindrical section are connected. The first cylindrical section can be connected to a fresh air duct, which is used to connect to the fresh air inlet of an air conditioner. The second cylindrical section can be connected to another fresh air duct. The radial cross-section of the second cylindrical section in its extending direction is a continuous annular surface. A grid is provided at the end of the second cylindrical section away from the first cylindrical section.

2. The rodent-proof connector as described in claim 1, characterized in that, The grid includes a central ring rib and a plurality of ribs arranged circumferentially along the central ring rib, the ribs being connected from the central ring rib to the inner wall of the second cylindrical section.

3. The rodent-proof connector as described in claim 2, characterized in that, The reinforcing rib extends in the direction of the inner diameter of the second cylindrical section; And / or, the shape of the central annular rib is circular.

4. The rodent-proof connector as described in claim 2, characterized in that, The inner diameter of the central ring rib is d1, where d1 < 10 mm; And / or, the radial thickness of the central ring rib is d2, 1mm≤d2≤2.5mm; And / or, the radial length of the rib is s1, where s1 < 10 mm; And / or, the radial width of the rib is s2, 1mm≤s2≤2.5mm.

5. The rodent-proof connector as described in claim 1, characterized in that, The grille is perpendicular to the axis of the second cylindrical section.

6. The rodent-proof connector as described in claim 1, characterized in that, The grille is inclinedly disposed within the second cylindrical section.

7. The rodent-proof connector as described in claim 6, characterized in that, The tilt angle of the grille is θ, where 10°≤θ≤45°.

8. The rodent-proof connector as described in claim 1, characterized in that, The grille and the second cylindrical section are integrally formed; And / or, the wall thickness of both the first and second cylindrical sections is h, where 1.5mm ≤ h ≤ 2.5mm; And / or, the rodent-proof connector further includes a limiting ring, which is connected to the outer surface of either the first cylindrical section or the second cylindrical section to abut against the inlet of the fresh air duct.

9. The rodent-proof connector as described in claim 1, characterized in that, The rodent-proof connector is fixed to the fresh air duct via a connecting structure; The connection structure is configured as a threaded structure formed between the rodent-proof connector and the fresh air duct; or the connection structure is configured as tape for wrapping around the connection position between the rodent-proof connector and the fresh air duct.

10. A fresh air module, characterized in that, Includes the rodent-proof connector as described in any one of claims 1 to 9.

11. An air conditioner, characterized in that, Includes the rodent-proof connector as described in any one of claims 1 to 9; or the fresh air module as described in claim 10.

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