Pipeline butt joint device, fresh air module and air conditioner

Abstract

The utility model discloses a pipeline butt joint device, a fresh air module and an air conditioner. The pipeline butt joint device comprises a first connector and a second connector, the second connector is detachably connected with the first connector and communicated with the first connector, one of the first connector and the second connector is provided with a first sealing groove, the other one of the first connector and the second connector is provided with a first sealing piece, and when the second connector is connected with the first connector, the first sealing piece abuts against the first sealing groove; the second sealing piece is arranged between the first connector and the second connector and arranged outside the first sealing piece in a sleeving mode.

Description

Technical Field

[0001] The present application belongs to the field of electrical appliance technology, and specifically relates to a pipeline docking device, a fresh air module and an air conditioner. Background Art

[0002] At present, with the improvement of people's quality of life, users' requirements for air conditioners are not limited to cooling and heating, but also require the freshness of indoor air. Therefore, air conditioners generally introduce fresh air modules to achieve the function of fresh air exchange, improve user comfort, and improve the user's indoor environment.

[0003] In order to allow fresh air to enter the room, the fresh air duct is connected to the fresh air module. However, in the prior art, the sealing effect between the fresh air duct and the fresh air module is not good. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a pipe docking device, a fresh air module and an air conditioner, aiming to at least solve the technical problem of poor sealing effect between the fresh air pipe and the fresh air module to a certain extent.

[0005] The technical solution of the utility model is:

[0006] A pipeline docking device is special in that it includes: a first joint; a second joint, which is detachably connected to the first joint and communicated with the first joint, one of the first joint and the second joint has a first sealing groove, and the other has a first sealing member, and when the second joint is connected to the first joint, the first sealing member conflicts with the first sealing groove; a second sealing member is arranged between the first joint and the second joint, and is sleeved outside the first sealing member.

[0007] Since the second joint is detachably connected to the first joint and communicates with the first joint, fluid circulation can be achieved when the second joint is connected to the first joint. Since one of the first joint and the second joint has a first sealing groove and the other has a first sealing member, when the second joint is connected to the first joint, the first sealing member conflicts with the first sealing groove. Therefore, the first sealing member and the first sealing groove can form a maze to form a first sealing layer. When part of the fluid enters the maze through the gap between the first sealing member and the bottom of the first sealing groove, the flow path of the fluid can be extended through the maze, the fluid velocity is reduced, the pressure is reduced, the sealing performance is improved, and the possibility of fluid leakage is reduced. Since the second sealing member is arranged between the first joint and the second joint and is sleeved on the outside of the first sealing member, a second sealing layer is formed by the second sealing member to further perform sealing and further reduce the possibility of fluid leakage. Two sealing layers are formed by the first sealing layer and the second sealing layer, and sealing between the first joint and the second joint is achieved, fluid leakage is avoided, and sealing performance is guaranteed.

[0008] In some embodiments, one of the first joint and the second joint has a second sealing groove, and the other has a third sealing member. The second sealing member is disposed in the second sealing groove and conflicts with the third sealing member to further ensure sealing performance.

[0009] In some embodiments, when the first joint has the first sealing groove and the third sealing member, the first sealing groove and the third sealing member are spaced apart, and the third sealing member is arranged outside the first sealing groove to further ensure the sealing performance.

[0010] In some embodiments, along the axial direction of the first joint, the first sealing groove and the third sealing member are staggered to further ensure sealing performance.

[0011] In some embodiments, when the second joint has the second sealing groove and the first sealing member, the second sealing groove is arranged outside the first sealing member to further ensure the sealing performance.

[0012] In some embodiments, along the axial direction of the second joint, the second sealing groove and the first sealing member are staggered to further ensure sealing performance.

[0013] In some embodiments, one of the first connector and the second connector is provided with a plurality of buckles, and the other is provided with a plurality of slots, and any of the buckles can be snapped into any of the slots; wherein the plurality of buckles are evenly spaced at equal angles to facilitate the connection between the first connector and the second connector.

[0014] In some embodiments, the pipeline docking device also includes: a support member, arranged at the bottom of the second joint; two connecting members, arranged opposite to each other and connected to the first joint, one of the two connecting members is detachably connected to the support member to ensure the stability of the first joint and the second joint.

[0015] Based on the same utility model concept, the utility model also provides a fresh air module, including a fresh air duct, a shell and the duct docking device, the first joint of the duct docking device is connected to the fresh air duct, and the second joint of the duct docking device is connected to the shell.

[0016] Based on the same utility model concept, the utility model also provides an air conditioner, including the fresh air module. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the pipeline docking device of some embodiments;

[0019] Figure 2 for Figure 1 A cross-sectional view of the middle pipe docking device;

[0020] Figure 3 for Figure 2 The enlarged schematic diagram at A in the middle;

[0021] Figure 4 for Figure 1 An exploded view from the first perspective;

[0022] Figure 5 for Figure 2 An exploded view from the second perspective;

[0023] Figure 6 for Figure 1 A schematic diagram of the installation of the second sealing member of the middle pipe docking device;

[0024] Figure 7 for Figure 1 A schematic structural diagram of a first joint of a central pipeline docking device;

[0025] Figure 8 for Figure 1 Schematic diagram of the structure of the second joint of the pipeline docking device.

[0026] In the attached figure:

[0027] A first joint 10, a first sealing groove 101, and a third sealing member 102;

[0028] A second joint 20, a first sealing member 201, and a second sealing groove 202;

[0029] A second sealing member 30;

[0030] Housing 40;

[0031] Fresh air duct 50, ventilation pipe 501, connecting pipe 502;

[0032] Support member 60;

[0033] Connector 70;

[0034] Pipe clamp 80;

[0035] Buckle 90;

[0036] Card slot 100. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0042] The air conditioner provided in this embodiment is intended to solve the technical problem at least to a certain extent.

[0043] Figure 1 It is a schematic diagram of the structure of the pipeline docking device of some embodiments; Figure 2 for Figure 1 A cross-sectional view of the middle pipe docking device; Figure 3 for Figure 2 The enlarged schematic diagram at A in the middle; Figure 6 for Figure 1 Schematic diagram of the installation of the second seal of the pipe docking device. Figure 1 , Figure 2 , Figure 3 and Figure 6 , the embodiment of the present application includes: a first joint 10, a second joint 20 and a second sealing member 30. The second joint 20 is detachably connected to the first joint 10 and communicates with the first joint 10. One of the first joint 10 and the second joint 20 has a first sealing groove 101, and the other has a first sealing member 201. When the second joint 20 is connected to the first joint 10, the first sealing member 201 conflicts with the first sealing groove 101. The second sealing member 30 is disposed between the first joint 10 and the second joint 20, and is sleeved outside the first sealing member 201.

[0044] The first sealing member 201 may be a sealing rib.

[0045] The first sealing member 201 may be annular in shape, the first sealing groove 101 may be annular in shape, and the second sealing member 30 may be annular in shape.

[0046] The material of the second sealing member 30 may be sponge, rubber, etc. When the material of the second sealing member 30 is sponge, the sponge may be EPDM (ethylene propylene rubber, Ethylene Propylene Diene Monomer) sponge.

[0047] Since the second joint 20 is detachably connected to the first joint 10 and communicates with the first joint 10, when the second joint 20 is connected to the first joint 10, the fluid can flow. Since one of the first joint 10 and the second joint 20 has the first sealing groove 101 and the other has the first sealing member 201, when the second joint 20 is connected to the first joint 10, the first sealing member 201 conflicts with the first sealing groove 101. Therefore, the first sealing member 201 and the first sealing groove 101 can form a labyrinth to form a first sealing layer. When part of the fluid passes through the first sealing member 201 and the first sealing groove 101, the fluid can pass through the first sealing member 201 and the first sealing groove 101. When the gap between the bottom of the groove enters the labyrinth, the flow path of the fluid can be extended through the labyrinth, the fluid speed is reduced, the pressure is reduced, the sealing performance is improved, and the possibility of fluid leakage is reduced. Since the second sealing member 30 is arranged between the first joint 10 and the second joint 20, and is sleeved outside the first sealing member 201, a second sealing layer is formed by the second sealing member 30 to further seal, which further reduces the possibility of fluid leakage. Two sealing layers are formed by the first sealing layer and the second sealing layer, thereby realizing the sealing between the first joint and the second joint, avoiding fluid leakage, and ensuring the sealing performance.

[0048] In some embodiments, the first joint 10 may have a first sealing groove 101, and the second joint 20 may have a first sealing member 201. Of course, in some other embodiments, the second joint 20 may have a first sealing groove 101, and the first joint 10 may have a first sealing member 201.

[0049] Figure 4 for Figure 1 An exploded view from the first perspective; Figure 5 for Figure 2 An exploded view of the second perspective. Figure 3 , Figure 4 and Figure 5 In some embodiments, in order to further ensure the sealing performance, one of the first joint 10 and the second joint 20 has a second sealing groove 202 , and the other has a third sealing member 102 . The second sealing member 30 is disposed in the second sealing groove 202 and conflicts with the third sealing member 102 .

[0050] In some embodiments, the third seal 102 is at least partially disposed within the second seal 202 to form a maze. When part of the fluid enters the maze through the gap between the third seal 102 and the bottom of the second sealing groove 202, the flow path of the fluid can be extended through the maze, thereby reducing the fluid velocity, reducing the pressure, improving the sealing performance, and reducing the possibility of fluid leakage. The second seal 30 is in conflict with the third seal 102 to achieve an interference fit between the second seal 30 and the third seal 102. That is, the third seal 102 can press the second seal 30 to ensure the sealing performance of the second seal 30, further perform sealing, and further reduce the possibility of fluid leakage.

[0051] In some embodiments, the first joint 10 may have a second sealing groove 202, and the second joint 20 may have a third sealing member 102. Of course, in other embodiments, the second joint 20 may have a second sealing groove 202, and the first joint 10 may have a third sealing member 102.

[0052] Combination Figure 2 and Figure 3 In some embodiments, in order to further ensure the sealing effect, when the first joint 10 has a first sealing groove 101 and a third sealing member 102 , the first sealing groove 101 and the third sealing member 102 are arranged at intervals, and the third sealing member 102 is arranged outside the first sealing groove 101 .

[0053] In some embodiments, since the first sealing groove 101 and the third sealing member 102 are spaced apart, in the process of the fluid flowing from the first sealing groove 101 to the third sealing member 102, the flow path of the fluid can be extended, the fluid velocity is reduced, the pressure is reduced, the sealing performance is improved, and the sealing effect is ensured.

[0054] Combination Figure 2 and Figure 3 In some embodiments, in order to further ensure the sealing effect, the first sealing groove 101 and the third sealing member 102 are staggered along the axial direction of the first joint 10. In the process of the fluid flowing from the first sealing groove 101 to the third sealing member 102, the flow path of the fluid can be extended, the fluid velocity is reduced, the pressure is reduced, and the sealing performance is improved. At the same time, when the first joint 10 is connected to the second joint 20, the interference between the action of the first sealing member 201 entering the first sealing groove 101 and the action of the third sealing member 102 entering the second sealing groove 202 is avoided, which facilitates installation and assembly, reduces assembly errors, ensures the assembly accuracy of the first joint 10 and the second joint 20, and also ensures the stability of the connection between the first joint 10 and the second joint 20.

[0055] Combination Figure 2 and Figure 3In some embodiments, in order to further ensure the sealing effect, when the second joint 20 has a second sealing groove 202 and a first sealing member 201, the second sealing groove 202 is arranged outside the first sealing member 201. In the process of the fluid flowing from the first sealing member 201 to the second sealing groove 202, the flow path of the fluid can be extended, the fluid velocity is reduced, the pressure is reduced, and the sealing performance is improved.

[0056] Combination Figure 2 and Figure 3 In some embodiments, in order to further ensure the sealing effect, the second sealing groove 202 and the first sealing member 201 are staggered along the axial direction of the second joint 20. In the process of the fluid flowing from the first sealing member 201 to the second sealing groove 202, the flow path of the fluid can be extended, the fluid velocity is reduced, the pressure is reduced, and the sealing performance is improved. At the same time, when the first joint 10 is connected to the second joint 20, the interference between the action of the first sealing member 201 entering the first sealing groove 101 and the action of the third sealing member 102 entering the second sealing groove 202 is avoided, which facilitates installation and assembly, reduces assembly errors, ensures the assembly accuracy of the first joint 10 and the second joint 20, and also ensures the stability of the connection between the first joint 10 and the second joint 20.

[0057] Figure 7 for Figure 1 A schematic structural diagram of a first joint of a central pipeline docking device; Figure 8 for Figure 1 A schematic diagram of the structure of the second joint of the pipe docking device. Figure 4 , Figure 5 , Figure 7 and Figure 8 In some embodiments, in order to facilitate the connection between the first connector 10 and the second connector 20, one of the first connector 10 and the second connector 20 is provided with a plurality of buckles 90, and the other is provided with a plurality of slots 100, and any buckle 90 can be locked in any slot 100.

[0058] In the prior art, the shell of the fresh air module is connected to the fresh air duct through a hose, and then the two ends are fastened with stainless steel clamps, which makes the connection between the shell and the fresh air duct complicated, requires a lot of materials, and the clamps are not easy to be found after being wrapped with cotton, and are not easy to disassemble and assemble, resulting in high material and labor costs. Figure 2 , Figure 7 and Figure 8In some embodiments, one of the first connector 10 and the second connector 20 is connected to the shell 40, and the other is connected to the fresh air duct 50. When the fresh air duct 50 is to be connected to the shell 40, the buckle 90 can be clamped in the slot 100 to achieve the connection between the first connector 10 and the second connector 20, which reduces the difficulty of assembly and improves the assembly efficiency. The buckle 90 can be separated from the slot 100 to achieve the separation of the first connector 10 and the second connector 20, which reduces the difficulty of disassembly and improves the disassembly efficiency. No clamp is required, which reduces the difficulty of disassembly and assembly. Disassembly and assembly are simple, less materials are required, and material costs and labor costs are reduced.

[0059] In the prior art, when the housing of the fresh air module is connected to the fresh air duct through a hose and the air inlet direction needs to be changed, a 180° elbow is required for switching, which is complicated. Figure 2 , Figure 7 and Figure 8 In some embodiments, in order to reduce the difficulty of operation, multiple buckles 90 are evenly spaced at equal angles. That is to say, when the first joint 10 is connected to the fresh air duct 50, the first joint 10 can be directly rotated 180°, and the first joint 10 will drive the fresh air duct 50 to rotate 180°, so as to change the air inlet direction, and take into account the left and right air inlets of the fresh air duct 50. At this time, any buckle 90 can still be clamped in any slot 100 to realize the connection between the first joint 10 and the second joint 20, and then realize the connection between the fresh air duct 50 and the shell 40. There is no need to use a 180° elbow for transfer, and it is convenient to connect the first joint 10 with the second joint 20. It is easy to operate, reduces the difficulty of disassembly and assembly, improves the efficiency of disassembly and assembly, and reduces material costs and labor costs.

[0060] Combination Figure 2 , Figure 7 and Figure 8 In some embodiments, in order to ensure the stability of the connection between the first joint 10 and the second joint 20, the pipe docking device further includes: a support member 60 and two connecting members 70. The support member 60 is disposed at the bottom of the second joint 20. The two connecting members 70 are arranged opposite to each other and connected to the first joint 10, and one of the two connecting members 70 is detachably connected to the support member 60.

[0061] In some embodiments, when the first joint 10 is connected to the second joint 20, one of the two connecting members 70 is aligned with the support member 60, and then the connecting member 70 and the support member 60 are connected by a locking member to achieve the connection between the first joint 10 and the second joint 20, thereby ensuring the stability of the connection between the first joint 10 and the second joint 20. The locking member may be a bolt, a screw or a pin.

[0062] In some embodiments, when the air intake direction needs to be changed, when the first connector 10 is connected to the fresh air duct 50, one of the two connectors 70 is removed from the support member 60, and then the first connector 10 is rotated 180°. The first connector 10 will drive the fresh air duct 50 to rotate 180°, thereby realizing the change of the air intake direction, and taking into account the left and right air intakes of the fresh air duct 50. At this time, the other of the two connectors 70 can be connected to the support member 60 to realize the connection between the first connector 10 and the second connector 20, thereby ensuring the stability of the connection between the first connector 10 and the second connector 20.

[0063] In the prior art, when the shell of the fresh air module is connected to the fresh air duct through a hose and fastened with a clamp, if the worker fails to point the clamp fastening screw downward as required, the clamp may be difficult to remove, and the clamp's locking nut may be wrapped by the sponge, or the clamp nut may not be fixed in the specified area, which may make the clamp unable to be removed. Figure 2 In some embodiments, since the support member 60 is disposed at the bottom of the second joint 20, the support member 60 is exposed to the outside, so that the staff can perform disassembly and assembly operations, thereby reducing the difficulty of disassembly and assembly and improving the efficiency of disassembly and assembly.

[0064] Combination Figure 7 In some embodiments, in order to facilitate the connection between the connecting member 70 and the supporting member 60, the connecting member 70 may be L-shaped.

[0065] In some embodiments, in order to ensure the stability of the connection between the connector 70 and the first connector 10, the connector 70 can be integrally formed with the first connector 10, so that the connector 70 and the first connector 10 are firmly connected, while also reducing processing costs.

[0066] In some embodiments, in order to ensure the stability of the connection between the support member 60 and the second joint 20, the support member 60 can be integrally formed with the second joint 20, so that the support member 60 and the second joint 20 are firmly connected, while also reducing processing costs.

[0067] Combination Figure 7 In some embodiments, in order to reduce processing costs, the first sealing groove 101 is open on both sides to form a stop.

[0068] Based on the same utility model concept, the present application also proposes a fresh air module, which adopts the pipe docking device. The specific structure of the pipe docking device refers to the above embodiment. Since the top plate structure adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0069] Combination Figure 1 , Figure 2 and Figure 3In some embodiments, the fresh air module includes: a housing 40 and a fresh air duct 50. The first joint 10 of the duct docking device is connected to the fresh air duct 50 and communicates with the fresh air duct 50. The second joint 20 of the duct docking device is connected to the housing 40 and communicates with the housing 40. When the fresh air duct 50 is to be communicated with the housing 40, the first joint 10 is connected to the second joint 20, and the first joint 10 is communicated with the second joint 20, so that the fresh air can enter the housing 40 from the fresh air duct 50.

[0070] Combination Figure 1 , Figure 4 and Figure 5 In some embodiments, the fresh air duct 50 includes: a ventilation pipe 501 and a connecting pipe 502. The first joint 10 is connected to the ventilation pipe 501 and communicates with the ventilation pipe 501. The ventilation pipe 501 is connected to the connecting pipe 502 and communicates with the connecting pipe 502 to facilitate the flow of fresh air.

[0071] In some embodiments, in order to ensure the stability of the connection between the ventilation tube 501 and the first connector 10, the ventilation tube 501 can be integrally formed with the first connector 10, so that the ventilation tube 501 and the first connector 10 are firmly connected, while also reducing the processing cost.

[0072] Combination Figure 4 and Figure 5 In some embodiments, in order to facilitate the connection between the ventilation pipe 501 and the connecting pipe 502, a pipe clamp 80 is provided on the ventilation pipe 501, and the ventilation pipe 501 is connected to the connecting pipe 502 through the pipe clamp 80 to ensure the stability of the connection between the ventilation pipe 501 and the connecting pipe 502.

[0073] Based on the same utility model concept, the present application also proposes an air conditioner, which adopts the fresh air module. The specific structure of the fresh air module refers to the above-mentioned embodiment. Since the top plate structure adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0074] In some embodiments, the air conditioner may be a duct unit or a wall-mounted unit.

[0075] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0076] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0077] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0079] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0080] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A pipe docking device, characterized in that: include: First joint; a second joint, detachably connected to the first joint and in communication with the first joint, one of the first joint and the second joint having a first sealing groove, and the other having a first sealing member, and when the second joint is connected to the first joint, the first sealing member contacts the first sealing groove; The second sealing member is arranged between the first joint and the second joint, and is sleeved outside the first sealing member.

2. The pipe docking device according to claim 1, characterized in that: One of the first joint and the second joint has a second sealing groove, and the other has a third sealing member. The second sealing member is arranged in the second sealing groove and conflicts with the third sealing member.

3. The pipe docking device according to claim 2, characterized in that: When the first joint has the first sealing groove and the third sealing member, the first sealing groove and the third sealing member are spaced apart, and the third sealing member is arranged outside the first sealing groove.

4. The pipe docking device according to claim 3, characterized in that: Along the axial direction of the first joint, the first sealing groove and the third sealing member are staggered.

5. The pipe docking device according to claim 2, characterized in that: When the second joint has the second sealing groove and the first sealing member, the second sealing groove is arranged outside the first sealing member.

6. The pipe docking device according to claim 5, characterized in that: Along the axial direction of the second joint, the second sealing groove and the first sealing member are staggered.

7. The pipe docking device according to any one of claims 1 to 6, characterized in that: One of the first connector and the second connector is provided with a plurality of buckles, and the other connector is provided with a plurality of slots, and any buckle can be locked in any slot; Wherein, a plurality of the buckles are evenly spaced at equal angles.

8. The pipe docking device according to any one of claims 1 to 6, characterized in that: The pipeline docking device also includes: A support member, disposed at the bottom of the second joint; Two connecting members are arranged opposite to each other and connected to the first joint, and one of the two connecting members is detachably connected to the supporting member.

9. A fresh air module, characterized in that: It comprises a fresh air duct, a shell and a duct docking device as described in any one of claims 1 to 8, wherein a first joint of the duct docking device is connected to the fresh air duct, and a second joint of the duct docking device is connected to the shell.

10. An air conditioner, characterized in that: Comprising the fresh air module as described in claim 9.

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