Fresh air connector, fresh air device and air conditioner

Abstract

The utility model discloses a fresh air connector, a fresh air device and an air conditioner, and relates to the technical field of air conditioning equipment, the fresh air connector is used for being arranged on a shell of the fresh air device, the fresh air connector is provided with a first pipe section, and the first pipe section is provided with a first end and a second end which are opposite in the axial direction; the first end is used for allowing a fresh air pipe to be inserted, and a plurality of flow guide holes are formed in the inner wall of the second end in a concave mode and distributed in the circumferential direction of the first pipe section at intervals. According to the technical scheme, fresh air on the outlet side of the fresh air pipe is rectified through the flow guide holes, so that the air inlet amount of the fresh air device is guaranteed, and the working noise of the fresh air device is reduced.

Description

Technical Field

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

[0002] In related technologies, the housing of the fresh air device is equipped with a fresh air connector for the connection of the fresh air duct. When the fresh air flows from the outlet side of the fresh air duct into the housing, it is easily subject to resistance, which affects the air intake and causes noise. Utility Model Content

[0003] The main purpose of this utility model is to propose a fresh air connector, a fresh air device, and an air conditioner, which aims to rectify the fresh air at the outlet side of the fresh air duct through the guide hole, so as to ensure the air intake of the fresh air device and reduce the operating noise of the fresh air device.

[0004] To achieve the above objectives, the present invention proposes a fresh air connector for use on the housing of a fresh air device. The fresh air connector has a first pipe section, which has a first end and a second end opposite to each other in the axial direction. The first end is used for inserting a fresh air duct, and the inner wall of the second end is recessed with a plurality of guide holes, which are distributed at intervals along the circumference of the first pipe section.

[0005] In one embodiment, the guide hole gradually expands in the direction from the first end to the second end.

[0006] In one embodiment, the plurality of flow guide holes are evenly spaced along the circumference of the first pipe segment.

[0007] In one embodiment, the sidewall of the flow guide hole is conical or cylindrical.

[0008] In one embodiment, the cross-sectional profile of the guide hole is arc-shaped or multi-segmented.

[0009] In one embodiment, the inner wall of the first pipe section is provided with a threaded structure for threading the fresh air duct.

[0010] In one embodiment, the screwed structure is configured as multiple screwed ribs spaced apart along the helical direction.

[0011] In one embodiment, the inner wall of the first pipe section is further provided with a positioning rib, the positioning rib extending along the axial direction of the first pipe section, and the positioning rib being connected to the end of the threaded rib closest to the end face of the second end.

[0012] In one embodiment, the fresh air connector further includes a second pipe section connected to the second end, the inner diameter of the second pipe section being larger than the inner diameter of the first pipe section, and a stepped surface being formed at the connection between the second pipe section and the first pipe section, with the guide hole corresponding to the stepped surface.

[0013] In one embodiment, the fresh air connector has a mounting portion on its outer periphery, and the fresh air connector is mounted to the housing via the mounting portion.

[0014] In one embodiment, the mounting portion includes a connecting clip for engaging with the housing.

[0015] In one embodiment, the mounting portion includes a connecting protrusion having a mounting hole for fasteners to pass through.

[0016] In one embodiment, the angle between the protruding direction of the connecting buckle and the connecting protrusion is between 90 degrees and 180 degrees.

[0017] In one embodiment, the fresh air connector further includes a second pipe section connected to the second end, the inner diameter of the second pipe section being larger than the inner diameter of the first pipe section, the mounting portion being disposed on the outer periphery of the second pipe section, and the second pipe section being configured to be inserted into the housing.

[0018] This utility model also proposes a fresh air device, including a housing, a fresh air duct and the aforementioned fresh air connector, wherein the fresh air connector is disposed in the housing and exposed outside the housing, the fresh air duct is inserted into the fresh air connector, and the guide hole is at least partially located between the fresh air duct and the housing.

[0019] This utility model also proposes an air conditioner, including the aforementioned fresh air device.

[0020] In this invention, after the fresh air duct is inserted into the fresh air connector from the first end, the outlet of the fresh air duct is positioned corresponding to the second end, and the outlet port of the fresh air duct does not extend beyond the end wall of the first pipe section at the second end. Therefore, the guide holes guide the fresh air flowing out of the outlet port of the fresh air duct, rectifying the airflow at the inlet of the fresh air device housing to improve the airflow velocity and flow field, suppressing the generation of vortices from the separated inlet airflow, thereby reducing noise at the inlet of the fresh air device and ensuring the airflow volume of the fresh air device. Since the multiple guide holes are spaced apart, the remaining inner wall provides sufficient support for the fresh air duct, and the guide holes also guide and avoid the airflow from the outlet of the fresh air duct, reducing the impact of the airflow on the inner wall of the first pipe section. Because multiple guide holes are distributed circumferentially, they can guide the airflow relatively evenly, which helps ensure a uniform airflow field, thus helping to guarantee the airflow volume and noise performance of the fresh air device. Attached Figure Description

[0021] 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.

[0022] Figure 1 A schematic diagram of a structural embodiment of the fresh air connector provided by this utility model;

[0023] Figure 2 A schematic diagram of a structural embodiment of the fresh air connector provided by this utility model;

[0024] Figure 3 A schematic diagram of a structural embodiment of the fresh air connector provided by this utility model;

[0025] Figure 4 A schematic diagram of a structural embodiment of the fresh air connector provided by this utility model;

[0026] Figure 5 A schematic diagram of the assembly structure of the housing and fresh air duct of the fresh air connector and fresh air device provided by this utility model;

[0027] Figure 6 A schematic diagram of the external structure of the fresh air connector provided by this utility model when it is installed on the housing of the fresh air device;

[0028] Figure 7 for Figure 6 A magnified view of a section at point D;

[0029] Figure 8 A cross-sectional structural diagram of the fresh air connector provided by this utility model when installed on the housing of a fresh air device;

[0030] Figure 9 An exploded structural diagram of an embodiment of the housing, fresh air duct, and fresh air connector of the fresh air device provided by this utility model.

[0031] Explanation of icon numbers:

[0032] 10. Fresh air connection;

[0033] 100. First pipe section; 101. First end; 102. Second end;

[0034] 110. Guide hole; 120. Threaded rib; 130. Positioning rib; 140. Stepped surface;

[0035] 200. Second pipe section;

[0036] 300. Mounting part; 310. Connecting buckle; 311. Clip protrusion;

[0037] 320. Connecting protrusion; 321. Mounting hole;

[0038] 20. Housing; 21. Air inlet wall; 22. Clip groove; 23. Clip hole;

[0039] 30. Fresh air duct.

[0040] 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

[0041] 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.

[0042] 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.

[0043] 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.

[0044] This utility model proposes a fresh air connector.

[0045] Please see Figures 1 to 9In one embodiment of the present invention, the fresh air connector 10 is used to be disposed on the housing 20 of the fresh air device. The fresh air connector 10 has a first pipe section 100. The first pipe section 100 has a first end 101 and a second end 102 opposite to each other in the axial direction. The first end 101 is used for the insertion of the fresh air pipe 30. The inner wall of the second end 102 is recessed with a plurality of guide holes 110. The plurality of guide holes 110 are distributed circumferentially along the first pipe section 100.

[0046] In this utility model, after the fresh air duct 30 is inserted into the fresh air connector 10 from the first end 101, the outlet of the fresh air duct 30 will be set corresponding to the second end 102, and the air outlet of the fresh air duct 30 will not exceed the end wall of the first pipe section 100 at the second end 102. Thus, the guide hole 110 can guide the fresh air flowing out of the air outlet of the fresh air duct 30, rectify the airflow at the air inlet of the fresh air device housing 20, improve the airflow velocity and flow field, suppress the separation of the incoming airflow to generate vortices, thereby reducing the noise at the air inlet of the fresh air device and ensuring the airflow volume of the fresh air device.

[0047] It is understandable that if the fresh air duct 30 extends too far into the air, causing the air outlet of the fresh air duct 30 to cross the end wall of the second end 102 of the first pipe section 100, the end of the fresh air duct 30 will not be supported by the first pipe section 100, and the end of the fresh air duct 30 will easily sway under the action of airflow, causing noise.

[0048] In this invention, since the multiple guide holes 110 are spaced apart, the remaining inner wall can provide sufficient support for the fresh air duct 30. The guide holes 110 can also guide and avoid the airflow from the fresh air duct 30, reducing the impact of the airflow on the inner wall of the first pipe section 100. Since there are multiple guide holes 110 distributed in the circumferential direction, they can guide the airflow relatively evenly, which helps to ensure the uniformity of the airflow field and thus helps to ensure the air volume and noise performance of the fresh air device.

[0049] In one embodiment, please refer to Figure 1 and Figure 2 The guide hole 110 gradually expands in the direction from the first end 101 to the second end 102. In this way, the guide hole 110 can better guide the airflow from the fresh air duct 30, thereby improving the rectification effect of the guide hole 110 on the air inlet of the fresh air device housing 20, so as to ensure the operating noise and operating air volume of the fresh air device.

[0050] Without loss of generality, the sidewall of the guide hole 110 is conical, allowing the sidewall of the guide hole 110 to extend obliquely along the depth direction, thereby better guiding the airflow from the fresh air duct 30. Of course, in other embodiments, the sidewall of the guide hole 110 may also be parabolic or irregular in shape.

[0051] Specifically, the sidewall of the guide hole 110 can be configured as a fully or partially conical surface in the axial direction.

[0052] When the sidewall of the guide hole 110 is set to be a completely conical surface in the axial direction, the sidewall of the guide hole 110 has the vertex of the conical surface at a position near the first end 101. When the sidewall of the guide hole 110 is set to be a partially conical surface in the axial direction, the sidewall of the guide hole 110 should actually be a table-shaped surface. The guide hole 110 has a bottom wall surface at a position near the first end 101, and the shape of the bottom wall surface can be planar or arc-shaped.

[0053] The sidewall of the guide hole 110 can be conical, elliptical, or pyramidal.

[0054] When the sidewall of the guide hole 110 is set as a conical or elliptical conical surface, its cross-sectional profile is an arc forming an opening on the inner circumference of the first pipe section 100. It can be a semi-arc, a major arc, or a minor arc, with a semi-arc or a minor arc being preferred. It can be understood that when the sidewall of the guide hole 110 is set as a conical surface, its cross-sectional profile is partially circular, and when the sidewall of the guide hole 110 is set as an elliptical conical surface, its cross-sectional profile is partially elliptical.

[0055] When the sidewall of the guide hole 110 is set as a pyramidal surface, its cross-sectional outline is a multi-segment line, that is, it is formed by connecting multiple bent straight lines in sequence, and the shape of the opening is set on the inner circumference of the first pipe section 100.

[0056] When the sidewall of the guide hole 110 is conical or elliptical, its inner wall is smoother, which helps to reduce the resistance of the airflow at the guide hole 110 and improves the airflow guiding effect.

[0057] Of course, in other embodiments, the size of the guide hole 110 does not change in the direction from the first end 101 to the second end 102, that is, please refer to Figure 3 and Figure 4 The diameter of the flow guide hole 110 is equal or nearly equal everywhere in the depth direction. That is, the sidewall of the flow guide hole 110 is cylindrical, which can be the side of a cylinder or elliptical cylinder, or the side of a prism.

[0058] Similarly, when the sidewall of the guide hole 110 is set as the side of a cylinder or elliptical cylinder, its cross-sectional profile is an arc forming an opening on the inner circumference of the first pipe section 100. It can be a semi-arc, a major arc, or a minor arc, with a semi-arc or a minor arc being preferred. It can be understood that when the sidewall of the guide hole 110 is set as the side of a cylinder or elliptical cylinder, its cross-sectional profile is correspondingly partially circular, and when the sidewall of the guide hole 110 is set as an elliptical cone, its cross-sectional profile is correspondingly partially elliptical.

[0059] When the sidewall of the flow hole is set as the side of a prism, its cross-sectional outline is in the form of multiple lines, that is, it is formed by connecting multiple bent straight lines in sequence, and the shape of the opening is set on the inner circumference of the first pipe section 100.

[0060] When the sidewall of the guide hole 110 is set as the sidewall of a cylinder or elliptical cylinder, its inner wall surface is smoother, which helps to reduce the resistance of the airflow at the guide hole 110 and improves the airflow guiding effect.

[0061] In one embodiment, please refer to Figures 2 to 4 The cross-sectional profile of the guide hole 110 is arc-shaped or multi-segmented. It can be understood that the cross-sectional profile of the guide hole 110 has an opening on the inner circumferential side of the first pipe section 100 to connect to the outlet of the fresh air duct 30, so that the guide hole 110 can receive the airflow from the outlet of the fresh air duct 30 and guide and rectify it.

[0062] When the cross-sectional outline of the guide hole 110 is arc-shaped, it can be a circular arc or an elliptical arc. Specifically, it can be a semi-arc, a major arc, or a minor arc, with a semi-arc or a minor arc being preferred.

[0063] When the cross-sectional outline of the guide hole 110 is multi-segmented, it includes at least two segments. These segments can be formed by connecting multiple straight lines in sequence, or by connecting multiple arcs with different curvatures in sequence, or by connecting straight lines and arcs. In this case, straight lines and arcs can be connected alternately, and the arcs can achieve a smooth transition between adjacent straight line segments.

[0064] In one embodiment, please refer to Figures 1 to 4The guide holes 110 are evenly spaced along the circumference of the first pipe section 100. Thus, the multiple guide holes 110 can guide and rectify the airflow from the outlet of the fresh air duct 30 in a relatively consistent circumferential direction, allowing it to flow more smoothly into the internal air duct of the fresh air device, especially when the through direction of the first pipe section 100 is parallel to the air inlet direction of the internal air duct of the fresh air device. Of course, in other embodiments, if the through direction of the first pipe section 100 and the air inlet direction of the internal air duct of the fresh air device have a certain angle, the distribution density of the guide holes 110 can be appropriately adjusted to have different distribution densities on the inside and outside of the angle. For example, the distribution density of the guide holes 110 can be greater on the inside of the angle to enhance the guiding effect on the airflow on that side.

[0065] In one embodiment, the inner wall of the first pipe segment 100 is provided with a threaded structure for screwing the fresh air duct 30. Thus, when the fresh air duct 30 is inserted into the first pipe segment 100, the fresh air duct 30 can be fixed to the first pipe segment 100 through a threaded connection, ensuring the connection stability between the fresh air duct 30 and the fresh air connector 10, and preventing loosening between the fresh air duct 30 and the fresh air connector 10, which could cause abnormal noise or air leakage, interfering with the operation of the fresh air device. Of course, in other embodiments, the fresh air connector 10 may also be provided with a snap-fit ​​structure for securing the fresh air duct 30.

[0066] In one embodiment, please refer to Figure 1 and Figure 6 The screwed connection structure is configured with multiple screw-connecting ribs 120 spaced apart along the spiral direction, which are also multiple discontinuous threads. This facilitates demolding of the first pipe section 100 during mold processing. Simultaneously, the discontinuously arranged multi-segment spiral ribs reduce resistance when the fresh air duct 30 is screwed in or out, making it easier to assemble and disassemble the fresh air duct 30 and the fresh air connector 10. Generally, the fresh air structure is made of plastic and integrally molded by injection molding. Furthermore, to improve the connection stability between the fresh air duct 30 and the fresh air connector 10, continuous threads can be provided on the outer periphery of the fresh air duct 30. Of course, in other embodiments, continuous threads can also be formed within the first pipe section 100 for screwing the fresh air duct 30.

[0067] In one embodiment, please refer to Figure 1The inner wall of the first pipe section 100 is also provided with a positioning rib 130, which extends axially along the first pipe section 100 and is connected to the end of the threaded rib 120 closest to the end face of the second end 102. Thus, the positioning rib 130 can determine the screw-in endpoint of the fresh air duct 30. When the corresponding threaded structure on the fresh air duct 30 abuts against the positioning rib 130, it indicates that the fresh air duct 30 is properly assembled, and the fresh air duct 30 will not extend excessively, ensuring that the air outlet of the fresh air duct 30 does not exceed the guide hole 110, thereby ensuring that the guide hole 110 can guide and rectify the airflow from the fresh air duct 30. The positioning rib 130 can extend obliquely relative to the axial direction of the first pipe section 100, or it can extend parallel to the axial direction of the first pipe section 100. Of course, in other embodiments, a positioning step may be provided on the outer periphery of the fresh air duct 30 corresponding to the first end 101. When the positioning step abuts against the end face of the first pipe section 100 at the first end 101, it means that the fresh air duct 30 is assembled in place.

[0068] In one embodiment, please refer to Figure 1 , Figure 6 and Figure 7 The fresh air connector 10 has a mounting portion 300 on its outer periphery, through which it is mounted to the housing 20. The mounting portion 300 on the outer periphery of the fresh air connector 10 facilitates the connection between the fresh air connector 10 and the housing 20, and also allows for easy observation of whether the connection between the fresh air connector 10 and the housing 20 is in place, ensuring reliable connection. In this embodiment, the fresh air connector 10 is separately formed from the housing 20 and then assembled onto the housing 20. This facilitates the standardization of the fresh air connector 10; a unified air inlet structure can be provided for housings 20 with different structures, and a standardized fresh air duct 30 can be connected through the standardized fresh air structure. Of course, in other embodiments, the fresh air connector 10 can be integrally formed onto the housing 20 of the fresh air device. Alternatively, when the two are separately formed, a mounting structure can be provided on the inner periphery or end face of the fresh air connector 10.

[0069] In one embodiment, please refer to Figure 1 , Figure 6 and Figure 7The mounting portion 300 includes at least one of a connecting buckle 310 and a connecting protrusion 320. The connecting buckle 310 is used to engage with the housing 20, and the connecting protrusion 320 is provided with a mounting hole 321 for fasteners to pass through. The fasteners can be screws, bolts, or rivets. The fresh air connector 10 may have only the connecting buckle 310 or the connecting protrusion 320, or it may have both the connecting buckle 310 and the connecting protrusion 320. The connecting buckle 310 facilitates the docking of the fresh air connector 10 and the housing 20. The fastener locking method helps to ensure the connection stability of the fresh air connector 10 and the housing 20. One or both can be set according to the requirements. The number of connecting protrusions 320 of the connecting buckle 310 can also be selected according to actual needs. When both connecting buckle 310 and connecting protrusion 320 are set at the same time, only one connecting buckle 310 and one connecting protrusion 320 can be set. Pre-assembly is achieved by connecting buckle 310, and then the connecting protrusion 320 is locked by fastener.

[0070] Specifically, when the fresh air connector 10 is equipped with both a connecting buckle 310 and a connecting protrusion 320, the angle between the protruding directions of the connecting buckle 310 and the connecting protrusion 320 is between 90 degrees and 180 degrees. That is, the angle between their distribution positions and the axis of the fresh air connector 10 is greater than or equal to 90 degrees and less than or equal to 180 degrees, which allows the two connection structures to be relatively dispersed in the circumferential direction. In this case, setting one connecting buckle 310 and one connecting protrusion 320 can also ensure the connection stability between the fresh air connector 10 and the housing 20, so as to ensure the docking stability between the second pipe section 200 and the air inlet of the internal air duct of the fresh air device, and can effectively prevent whistling. Of course, in other embodiments, the number of mounting parts 300 can also be increased, and adjacent mounting parts 300 can also be distributed at an acute angle; in addition, the fresh air connector 10 can also be connected to the housing 20 by a threaded connection, that is, the mounting part 300 is configured as a threaded structure.

[0071] Without loss of generality, the fresh air connector 10 connects to the internal air duct of the housing 20 by inserting into the air inlet wall 21 of the housing 20. Correspondingly, a space is formed between the connecting buckle 310 and the outer peripheral wall of the fresh air connector 10 to avoid the air inlet wall 21. The housing 20 is provided with a buckle groove 22 corresponding to the connecting buckle 310. The connecting buckle 310 is inserted into the buckle groove 22. A buckle protrusion 311 is provided on the side of the connecting buckle 310 away from the outer peripheral wall of the fresh air connector 10. The buckle protrusion 311 is engaged with the buckle hole 23 provided in the groove wall of the buckle groove 22 to achieve the fastening between the connecting buckle 310 and the housing 20.

[0072] In one embodiment, the fresh air connector 10 further includes a second pipe section 200 connected to the second end 102. The inner diameter of the second pipe section 200 is larger than the inner diameter of the first pipe section 100. A stepped surface 140 is formed at the connection between the second pipe section 200 and the first pipe section 100, and the guide hole 110 is provided corresponding to the stepped surface 140. The second pipe section 200 is closer to the air inlet of the internal air duct of the fresh air device. The inner diameter of the second pipe section 200 is larger than the inner diameter of the first pipe section 100, so that the fresh air connector 10 forms a gradually expanding flow channel between the air outlet structure of the fresh air pipe 30 and the air inlet of the internal air duct of the fresh air device, so as to minimize the pressure loss of the airflow at this point, thereby ensuring the airflow velocity and flow field. The guide hole 110 is provided corresponding to the stepped surface 140, meaning that the peripheral boundary of the guide hole 110 will not exceed the stepped surface 140. The stepped surface 140 serves as the end face of the first pipe section 100 at the second end 102. The guide hole 110 will penetrate through the stepped surface 140, and the airflow from the fresh air duct 30 will flow into the second pipe section 200 under the guidance of the guide hole 110, which helps to ensure the airflow velocity and flow field. At the same time, the guide hole 110 is located on the stepped surface 140, which can prevent the gas flow channel from abruptly changing at the stepped surface 140, which helps to stabilize the airflow field. Of course, in other embodiments, the second pipe section 200 may not be provided, and the first pipe section 100 may be directly connected to the air inlet of the internal air duct of the fresh air device.

[0073] Specifically, please refer to Figures 6 to 9 The second pipe segment 200 is configured to be inserted into the housing 20, and the mounting part 300 is provided on the outer periphery of the second pipe segment 200. In this way, by inserting the second pipe segment 200 into the air inlet of the housing 20, and through the cooperation of the mounting part 300 and the relevant structure of the housing 20, a stable connection between the fresh air connector 10 and the housing 20 can be achieved.

[0074] This utility model also proposes a fresh air device; please refer to [link / reference]. Figures 5 to 9 The fresh air device includes a housing 20, a fresh air duct 30, and the aforementioned fresh air connector 10. The fresh air connector 10 is disposed on the housing 20 and exposed outside the housing 20. The fresh air duct 30 is inserted into the fresh air connector 10. The guide hole 110 is at least partially located between the fresh air duct 30 and the housing 20. The specific structure of the fresh air connector 10 is as described in the above embodiments. Since this fresh air device adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be elaborated further here.

[0075] This utility model also proposes an air conditioner, which includes the aforementioned fresh air device. It also adopts all the technical solutions of all the above embodiments, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0076] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope 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 patent protection scope of the present utility model.

Claims

1. A fresh air connector, characterized in that, The fresh air connector is used to be mounted on the housing of the fresh air device. The fresh air connector has a first pipe section, which has a first end and a second end opposite each other in the axial direction. The first end is used for inserting a fresh air pipe, and the inner wall of the second end is recessed with a plurality of guide holes, which are distributed at intervals along the circumference of the first pipe section.

2. The fresh air connector as described in claim 1, characterized in that, The flow guide hole gradually expands in the direction from the first end to the second end; And / or, the plurality of the flow guide holes are evenly spaced along the circumference of the first pipe segment.

3. The fresh air connector as described in claim 1, characterized in that, The sidewall of the flow guide hole is conical or cylindrical; And / or, the cross-sectional profile of the guide hole is arc-shaped or multi-segmented.

4. The fresh air connector as described in claim 1, characterized in that, The inner wall of the first pipe section is provided with a screw connection structure for screwing the fresh air duct.

5. The fresh air connector as described in claim 4, characterized in that, The threaded structure is configured as multiple threaded ribs spaced apart along the helical direction.

6. The fresh air connector as described in claim 5, characterized in that, The inner wall of the first pipe section is also provided with a positioning rib, which extends along the axial direction of the first pipe section and is connected to the end of the threaded rib closest to the end face of the second end.

7. The fresh air connector as described in claim 1, characterized in that, The fresh air connector also has a second pipe section connected to the second end. The inner diameter of the second pipe section is larger than the inner diameter of the first pipe section. A stepped surface is formed at the connection between the second pipe section and the first pipe section, and the guide hole is provided corresponding to the stepped surface.

8. The fresh air connector as described in claim 1, characterized in that, The fresh air connector has a mounting part on its outer periphery, and the fresh air connector is mounted to the housing through the mounting part.

9. The fresh air connector as described in claim 8, characterized in that, The mounting part includes a connecting clip for engaging with the housing; And / or, the mounting portion includes a connecting protrusion having a mounting hole for fasteners to pass through.

10. The fresh air connector as described in claim 9, characterized in that, The angle between the protruding direction of the connecting buckle and the connecting protrusion is between 90 degrees and 180 degrees.

11. The fresh air connector as described in claim 8, characterized in that, The fresh air connector also has a second pipe section connected to the second end, the inner diameter of the second pipe section being larger than the inner diameter of the first pipe section, the mounting part being disposed on the outer periphery of the second pipe section, and the second pipe section being configured to be inserted into the housing.

12. A fresh air device, characterized in that, The device includes a housing, a fresh air duct, and a fresh air connector as described in any one of claims 1 to 11, wherein the fresh air connector is disposed in the housing and exposed outside the housing, the fresh air duct is inserted into the fresh air connector, and the air guide hole is at least partially located between the fresh air duct and the housing.

13. An air conditioner, characterized in that, Includes the fresh air device as described in claim 12.

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