Pipeline connecting device and air conditioner

Abstract

The utility model discloses a pipeline connecting device and an air conditioner, relates to the field of pipes, and is used for enabling after-sales drainage test to be more convenient. The pipeline connecting device comprises a first corrugated pipe, a second corrugated pipe and at least one pipe joint assembly. The material of the first corrugated pipe is transparent or semitransparent. The second corrugated pipe is nested in the first corrugated pipe, and a cavity is formed between the first corrugated pipe and the second corrugated pipe; the second corrugated pipe is made of transparent or semitransparent materials. The pipe joint assembly is fixedly connected with the first corrugated pipe and the second corrugated pipe; the pipe joint assembly is provided with a first through hole, and the first through hole is communicated with the second corrugated pipe. According to the technical scheme, whether water flow exists inside or not can be directly observed, other instruments and equipment are not needed, visualization of the pipeline connecting device is achieved, and after-sale testing of the air conditioner is greatly simplified.

Description

Technical Field

[0001] The utility model relates to the field of pipes, in particular to a pipe connecting device and an air conditioner. Background Art

[0002] In the related art, after the condensate drain pipe is installed, it is necessary to wrap the outer wall of the drain pipe with insulation cotton or use the insulation cotton provided by the flexible joint for insulation.

[0003] The inventors have found that the prior art has at least the following problems: after the pipes are connected in the prior art, the drainage status cannot be observed during the subsequent after-sales drainage test, which brings inconvenience to the after-sales installation. Utility Model Content

[0004] The utility model provides a pipeline connection device and an air conditioner, which are used to make after-sales drainage testing more convenient.

[0005] The utility model provides a pipeline connection device, comprising:

[0006] A first bellows, wherein the material of the first bellows is transparent or translucent;

[0007] a second bellows, nested inside the first bellows, with a cavity between the first bellows and the second bellows; the second bellows is made of transparent or translucent material; and

[0008] At least one pipe joint assembly, the pipe joint assembly is fixedly connected to both the first bellows and the second bellows; the pipe joint assembly is provided with a first through hole, the first through hole is communicated with the second bellows.

[0009] In some embodiments, the pipe fitting assembly includes:

[0010] The joint body is provided with the first through hole; the outer wall of the first through hole is fixedly connected to the first corrugated pipe, and the inner wall of the first through hole is fixedly connected to the second corrugated pipe; and

[0011] A locking assembly is installed on the joint body, and the locking assembly is configured to achieve locking and unlocking of the pipeline connecting device and an external pipeline.

[0012] In some embodiments, the outer wall of the connector body is provided with a mounting groove and a mounting hole; the mounting hole is located at the bottom of the mounting groove, and the mounting hole is connected to the first through hole of the connector body; the locking assembly includes:

[0013] A rubber member installed inside the installation hole;

[0014] a pressing block, mounted on a side of the rubber member away from the mounting hole; and

[0015] The rotating component comprises a second through hole and an avoidance hole, wherein the avoidance hole passes through the wall of the rotating component and is connected with the second through hole; the joint body passes through the second through hole, and the rotating component is located in the mounting groove of the joint body; the rotating component is constructed to rotate around the central axis of the first through hole under the action of an external force, so that the pressure block is located in the avoidance hole or staggered from the avoidance hole.

[0016] In some embodiments, the number of the rubber members and the number of the pressure blocks are both two or more, and the rubber members and the pressure blocks are arranged in a one-to-one correspondence; the number of the avoidance holes of the rotating component is equal to the number of the pressure blocks.

[0017] In some embodiments, a plurality of the avoidance holes are evenly arranged along the circumference of the rotating component.

[0018] In some embodiments, the rotating component further includes a mating protrusion, the mating protrusion is located on the inner wall of the second through hole, and the mating protrusion is provided between two adjacent avoidance holes; the mating protrusion is constructed to cooperate with the pressure block.

[0019] In some embodiments, the surface of the pressing block facing the mating protrusion is constructed as a convex first arc surface, and the surface of the mating protrusion facing the pressing block is set as a concave second arc surface, and the first arc surface and the second arc surface cooperate; or, the surface of the pressing block facing the mating protrusion is constructed as a concave third arc surface, and the surface of the mating protrusion facing the pressing block is set as a convex fourth arc surface, and the third arc surface and the fourth arc surface cooperate.

[0020] In some embodiments, a snap-in portion is provided on a surface of the rubber member facing the pressure block, and a snap-in groove is provided on a surface of the pressure block facing the rubber member, and the snap-in groove cooperates with the snap-in portion.

[0021] In some embodiments, along the axial direction of the joint body, limiting grooves are provided at both ends of the mounting groove, and limiting protrusions are provided at both ends of the pressure block, and the limiting protrusions are located in the limiting grooves, so that when the rotating part rotates relative to the joint body, the pressure block is non-rotatable relative to the joint body.

[0022] In some embodiments, the limiting protrusion at at least one of the two ends of the pressing block is provided with a gap.

[0023] In some embodiments, the fixing component includes a plurality of the rubber pieces, and all the rubber pieces are fixedly connected to form a ring.

[0024] In some embodiments, an anti-slip portion is provided on the outer wall of the rotating member.

[0025] In some embodiments, the number of the pipe joint assemblies is two, and the structures of the two pipe joint assemblies are the same. One end of the first corrugated pipe and one end of the second corrugated pipe are fixedly connected through one of the pipe joint assemblies, and the other end of the first corrugated pipe and the other end of the second corrugated pipe are fixedly connected through one of the pipe joint assemblies.

[0026] In some embodiments, the pipe joint assembly and both the first corrugated pipe and the second corrugated pipe are fixed by heat fusion.

[0027] In some embodiments, a seal is installed on the inner wall of the pipe joint assembly, and the seal is configured to be hermetically connected to an external pipeline.

[0028] In some embodiments, the number of the seals is multiple, and the multiple seals are dispersedly arranged along the axial direction of the pipe joint assembly.

[0029] In some embodiments, convex rings are provided at the ends of both the first corrugated pipe and the second corrugated pipe, and concave rings are correspondingly provided on both the inner wall and the outer wall of the pipe joint assembly, and the convex rings are located in the concave rings; alternatively, concave rings are provided at the ends of both the first corrugated pipe and the second corrugated pipe, and convex rings are correspondingly provided on both the inner wall and the outer wall of the pipe joint assembly, and the convex rings are located in the concave rings.

[0030] An embodiment of the present invention further provides an air conditioner, including the pipeline connection device provided by any technical solution of the present invention.

[0031] For the pipeline connection device provided by the above technical solution, both the first corrugated pipe and the second corrugated pipe are made of transparent or semi-transparent materials. Whether there is water flow inside can be directly observed through the walls of the first corrugated pipe and the second corrugated pipe, without the need to rely on other instrument devices, realizing the visualization of the pipeline connection device and greatly simplifying the after-sales test of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation to the present invention. In the drawings:

[0033] Figure 1 is a three-dimensional schematic diagram of the pipeline connection device provided by an embodiment of the present invention.

[0034] Figure 2 is an exploded schematic diagram of the pipeline connection device provided by an embodiment of the present invention.

[0035] Figure 3 Schematic cross-sectional view of the pipeline connection device provided by the embodiment of the present utility model in the main viewing direction.

[0036] Figure 4 Schematic cross-sectional view of the pipeline connection device provided by the embodiment of the present utility model in the left viewing direction.

[0037] Figure 5 Three-dimensional schematic view of the first corrugated pipe of the pipeline connection device provided by the embodiment of the present utility model.

[0038] Figure 6 Three-dimensional schematic view of the second corrugated pipe of the pipeline connection device provided by the embodiment of the present utility model.

[0039] Figure 7 Three-dimensional schematic view of the joint body of the pipeline connection device provided by the embodiment of the present utility model.

[0040] Figure 8 Three-dimensional schematic view of the rubber part of the pipeline connection device provided by the embodiment of the present utility model.

[0041] Figure 9 Three-dimensional schematic view of the pressing block of the pipeline connection device provided by the embodiment of the present utility model.

[0042] Figure 10 Three-dimensional schematic view of the rotating part of the pipeline connection device provided by the embodiment of the present utility model.

[0043] Figure 11 Three-dimensional schematic view of the pipeline connection device provided by other embodiments of the present utility model.

[0044] Figure 12 Three-dimensional schematic view of the rubber part of the pipeline connection device provided by other embodiments of the present utility model.

[0045] Figure 13 Three-dimensional schematic view of the joint body of the pipeline connection device provided by other embodiments of the present utility model.

[0046] Reference numerals:

[0047] 1, First corrugated pipe; 2, Second corrugated pipe; 3, Pipe joint assembly;

[0048] 10, Convex ring;

[0049] 30, First through hole; 31, Joint body; 32, Locking assembly; 33, Concave ring; 34, Sealing member;

[0050] 311, Installation groove; 312, Installation hole; 313, Limiting groove; 314, Accommodation groove;

[0051] 321. Rubber part; 322. Pressing block; 323. Rotating part; 324. Second through-hole; 325. Avoidance hole; 326. Fitting protrusion; 327. Limiting protrusion; 328. Anti-slip part; 329. Insertion part; 320. Card slot; a. First arc surface; b. Second arc surface; c. Gap; P. Cavity; M. Concave cavity. Detailed implementation mode

[0052] The following combines Figures 1 to 13 to elaborate more detailedly on the technical solutions provided by the present utility model. The description of the exemplary embodiments is merely illustrative and in no way limits the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments introduced here. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions, and numerical values set forth in these embodiments should be construed as merely exemplary and not as limitations.

[0053] The "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0054] In the present disclosure, when it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When it is described that a specific device is connected to other devices, the specific device may be directly connected to other devices without an intermediate device, or may not be directly connected to other devices but have an intermediate device.

[0055] All terms used in the present disclosure, including technical terms or scientific terms, have the same meaning as understood by those of ordinary skill in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as those, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0056] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices are regarded as part of the specification.

[0057] The dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The same reference numerals are attached to common structural elements or structural elements of the same type in the drawings, and repeated descriptions thereof are appropriately omitted.

[0058] Figure 1 This is a three-dimensional schematic diagram of the pipeline connection device provided by the embodiment of the present invention. Figure 2 This is an exploded schematic diagram of the pipeline connection device provided by the embodiment of the present invention. Figure 3 This is a schematic cross-sectional view of the pipeline connection device provided by the embodiment of the present invention in the front view direction. Figure 4 This is a schematic cross-sectional view of the pipeline connection device provided by the embodiment of the present invention in the left view direction. Figure 5 This is a three-dimensional schematic diagram of the first corrugated pipe of the pipeline connection device provided by the embodiment of the present invention. Figure 6 This is a three-dimensional schematic diagram of the second corrugated pipe of the pipeline connection device provided by the embodiment of the present invention.

[0059] See Figures 1 to 6 , the embodiment of the present invention provides a pipeline connection device for connecting pipelines in air conditioners and similar equipment. Taking the application in an air conditioner as an example, the pipeline connection device can connect two sections of pipelines of the air conditioner, which are collectively referred to as external pipelines in this article. One of the external pipelines is communicated with the water receiving tray to discharge the condensed water in the water receiving tray into another external pipeline and finally discharge it out of the air conditioner.

[0060] The pipeline connection device includes a first corrugated pipe 1, a second corrugated pipe 2, and at least one pipe joint assembly 3. The material of the first corrugated pipe 1 is transparent or semi-transparent. The second corrugated pipe 2 is nested inside the first corrugated pipe 1, and there is a cavity P between the first corrugated pipe 1 and the second corrugated pipe 2; the material of the second corrugated pipe 2 is transparent or semi-transparent. The pipe joint assembly 3 is fixedly connected to both the first corrugated pipe 1 and the second corrugated pipe 2; the pipe joint assembly 3 is provided with a first through hole 30, and the first through hole 30 is communicated with the second corrugated pipe 2.

[0061] Both the first corrugated pipe 1 and the second corrugated pipe 2 are corrugated pipes, and their inner diameter sizes are different. The inner diameter of the first corrugated pipe 1 is larger than the outer diameter of the second corrugated pipe 2, and the second corrugated pipe 2 can be nested inside the first corrugated pipe 1. The outer diameters of the first corrugated pipe 1 and the second corrugated pipe 2 differ by approximately 10 - 30 mm. A cavity P is formed between the inner wall of the first corrugated pipe 1 and the outer wall of the second corrugated pipe 2. As Figure 3 shown, this cavity P cooperates with the pipe joint assembly 3 to form a closed cavity P. During the use of the pipeline connection device, the condensed water flows inside, and the temperature of the condensed water is relatively low. The cavity P can play a heat preservation role, reducing or even preventing the formation of water mist on the outer wall of the pipeline connection device without the need to set heat preservation cotton for the pipeline connection device.

[0062] A corrugated pipe is a pipe with a wavy or corrugated shape, used for the conveyance of condensate. The corrugated pipe has good flexibility and pressure resistance. The corrugated pipe has a corrugated outer contour. This corrugated shape enables the corrugated pipe to effectively disperse stress when under pressure, thereby resisting external compression or torsion to a certain extent. At the same time, the presence of the corrugations also improves the flexibility of the pipe, allowing the corrugated pipe to bend or extend in a narrow space without breaking. The corrugated pipe also has shock-absorbing characteristics. The corrugated structure can effectively buffer and absorb vibrations generated by fluid flow or equipment operation, reducing the impact on the pipe system.

[0063] Both the first corrugated pipe 1 and the second corrugated pipe 2 are made of transparent or semi-transparent materials. Through the walls of the first corrugated pipe 1 and the second corrugated pipe 2, it is possible to directly observe whether there is water flow inside without the need to rely on other instrument devices, achieving the visualization of the pipeline connection device. During the after-sales test of an air conditioner, it is necessary to manually pour water into the water receiving tray and then observe whether there is water flow in the pipeline connection device. If there is water flow, it indicates that the installation position of the water receiving tray meets the requirements. If there is no water flow, it indicates that the installation position of the water receiving tray needs to be adjusted.

[0064] See Figure 2 、 Figure 5 and Figure 6 , although the inner diameters of the first corrugated pipe 1 and the second corrugated pipe 2 are different, their structures are basically the same: the middle area is the corrugated section, and both ends are used to connect to the pipe joint assembly 3. Specifically, convex rings 10 are provided at the ends of both the first corrugated pipe 1 and the second corrugated pipe 2, and concave rings 33 are correspondingly provided on the inner wall and the outer wall of the pipe joint assembly 3, and the convex rings 10 are located in the concave rings 33. In the embodiments of the present invention, it is taken as an example that convex rings 10 are provided at the ends of both the first corrugated pipe 1 and the second corrugated pipe 2, and concave rings 33 are correspondingly provided on the inner wall and the outer wall of the pipe joint assembly 3. The number of both the convex rings 10 and the concave rings 33 is multiple. Through the cooperation of the convex rings 10 and the concave rings 33, the connection reliability between the first corrugated pipe 1, the second corrugated pipe 2 and the pipe joint assembly 3 can be improved.

[0065] It can be understood that there are various ways to set the positions of the convex rings 10 and the concave rings 33. In some other embodiments, concave rings 33 are provided at the ends of both the first corrugated pipe 1 and the second corrugated pipe 2, and convex rings 10 are correspondingly provided on the inner wall and the outer wall of the pipe joint assembly 3, and the convex rings 10 are located in the concave rings 33. In some other embodiments, one of the first corrugated pipe 1 and the second corrugated pipe 2 is provided with a concave ring 33, and the other is provided with a convex ring 10; concave rings 33 and convex rings 10 are correspondingly provided on the inner wall and the outer wall of the pipe joint assembly 3.

[0066] See Figure 1 or Figure 3, in some embodiments, the pipe joint assembly 3 is arranged at the axial ends of the first bellows 1 and the second bellows 2. The pipe joint assembly 3 is fixedly connected to both the first bellows 1 and the second bellows 2 by hot melting, the connection is more reliable, and there is no need to set additional installation steps, no need to use glue for fixation, and it will not corrode or rust, and has a long service life.

[0067] See Figure 1 , in some embodiments, the number of the pipe joint assemblies 3 is two, and the structures of the two pipe joint assemblies 3 are the same. One end of the first bellows 1 and one end of the second bellows 2 are fixedly connected through one of the pipe joint assemblies 3, and the other end of the first bellows 1 and the other end of the second bellows 2 are fixedly connected through the other pipe joint assembly 3. The structures of the two pipe joint assemblies 3 are the same, and the connection methods with the first bellows 1 and the second bellows 2 are also the same, so that the pipeline connection device has fewer components, a more compact structure, is convenient for manufacturing, has a high installation efficiency, a high installation quality, and is convenient for the installation and debugging of after-sales personnel. The cooperation of the two pipe joint assemblies 3, the first bellows 1, and the second bellows 2 makes the cavity P between the first bellows 1 and the second bellows 2 closed. The cavity P can play a good heat preservation role, making it difficult for the temperature of the condensed water inside the second bellows 2 to be transmitted to the first bellows 1, and reducing the probability of condensed water appearing outside the first bellows 1.

[0068] See Figures 2 to 4 , in some embodiments, each pipe joint assembly 3 includes a joint body 31 and a locking assembly 32. The joint body 31 is provided with a first through hole 30; the outer wall of the first through hole 30 is fixedly connected to the first bellows 1, specifically, it can be fixedly connected by hot melting, which can also be called hot pressing fusion fixation. The inner wall of the first through hole 30 is fixedly connected to the second bellows 2, specifically, it can be fixedly connected by hot melting. The locking assembly 32 is installed on the joint body 31, and the locking assembly 32 is configured to lock and unlock the pipeline connection device with an external pipeline.

[0069] The joint body 31 is a rotating part. The joint body 31 forms a surface-to-surface fit with the first bellows 1 and the second bellows 2, with a large contact area, and the hot melting fixation method is also very firm. It is not easy for the joint body 31 to fall off from the first bellows 1 and the joint body 31 to fall off from the second bellows 2.

[0070] See Figure 3 , in some embodiments, a seal 34 is installed on the inner wall of the pipe joint assembly 3. The seal 34 is configured to be hermetically connected to an external pipeline. The seal 34 is, for example, an O-ring. The seal ring cooperates with the external pipeline, so that the pipe joint assembly 3 and the external pipeline form a sealed connection. The fluid in the second bellows 2 passes through the first through hole 30 and then flows into the external pipeline (not shown in the figure). During this process, due to the use of the O-ring, the fluid will not leak.

[0071] Continue to see Figure 3 In some embodiments, there are multiple seals 34, and the multiple seals 34 are dispersedly arranged along the axial direction of the pipe joint assembly 3. In some embodiments, 3 to 5 seals 34 are provided as an example, and the sealing effect in this way is better and more reliable.

[0072] How to achieve fixed connection between the pipe joint assembly 3 and the external pipeline is described in detail below.

[0073] Figure 7 A three-dimensional schematic diagram of a connector body 31 of a pipe connection device provided in an embodiment of the utility model. Figure 8 A three-dimensional schematic diagram of a rubber member 321 of a pipe connection device provided in an embodiment of the utility model. Figure 9 A three-dimensional schematic diagram of a pressing block 322 of a pipeline connecting device provided in an embodiment of the utility model. Figure 10 A three-dimensional schematic diagram of a rotating component 323 of a pipe connection device provided in an embodiment of the utility model.

[0074] See also Figure 7 In some embodiments, the outer wall of the joint body 31 is provided with a mounting groove 311 and a mounting hole 312. The mounting groove 311 is annular. The mounting hole 312 is located at the bottom of the mounting groove 311, and the mounting hole 312 is connected to the first through hole 30 of the joint body 31. Figure 2 The locking assembly 32 includes a rubber member 321, a pressure block 322, and a rotating member 323. The rubber member 321 is installed inside the mounting hole 312. The rubber member 321 is similar to a bowl-shaped structure, and a concave cavity M is provided on one side of the rubber member 321 facing the external pipeline, such as Figure 4 The pressing block 322 is installed on the side of the rubber member 321 away from the mounting hole 312. Figure 10 The rotating component 323 includes a second through hole 324 and an avoidance hole 325. The avoidance hole 325 passes through the wall of the rotating component 323 and is connected to the second through hole 324. The joint body 31 passes through the second through hole 324, and the rotating component 323 is located in the mounting groove 311 of the joint body 31. The rotating component 323 is configured to rotate around the central axis of the first through hole 30 under the action of an external force, so that the pressing block 322 is located in the avoidance hole 325 or staggered from the avoidance hole 325. The rotation direction of the rotating component 323 is as follows: Figure 4 As indicated by W in the middle.

[0075] The connector body 31 is roughly divided into three connection positions: a first connection position, a second connection position and a third connection position. The first connection position is fixedly connected to the first bellows 1 and the second bellows 2, the second connection position in the middle forms a sealed connection with the external pipeline, and the third connection position is used to be fixedly connected to the external pipeline. The external pipeline is inserted into the first through hole 30 of the connector body 31, and the locking assembly 32 is used to lock and unlock the external pipeline and the connector body 31. When the external pipeline and the connector body 31 are locked, the external pipeline and the connector body 31 are fixedly connected, and the two cannot be separated. When the external pipeline and the connector body 31 are unlocked, the external pipeline and the connector body 31 are loosened, and the two can be easily separated.

[0076] The rubber member 321 is a component that can directly contact the external pipeline. The rubber member 321 is made of rubber material and can be deformed. When squeezed by external force, the rubber member 321 is deformed, and the air in the cavity M of the rubber member 321 is discharged. The rubber member 321 will press the external pipeline located in the first through hole 30, so that the external pipeline is fixedly connected to the joint body 31. In the above process, the pressing block 322 is a force transmission component. By rotating the rotating component 323, the pressing block 322 moves in the installation hole 312 along the radial direction of the joint body 31. The moving direction is as follows: Figure 4 The direction indicated by S1 is along the radial direction of the first through hole 30. If the pressing block 322 is pressed toward the center of the first through hole 30 of the joint body 31, the pressing block 322 is offset from the avoidance hole 325 of the rotating component 323, and the pressing block 322 is squeezed by the inner wall of the rotating component 323, then the rubber member 321 is squeezed and deformed to suck the external pipeline in the first through hole 30, and the external pipeline is fixedly connected to the joint body 31. If the pressing block 322 is released, the pressing block 322 will align with the avoidance hole 325 of the rotating component 323, and the pressing block 322 in the avoidance hole 325 is not squeezed by external force, then the rubber member 321 releases the external pipeline in the first through hole 30, and the external pipeline can be easily removed at this time. Figure 4 The figure shows a situation where the pressing block 322 is located in the avoidance hole 325 of the rotating component 323 .

[0077] In the above technical solution, the locking assembly 32 has an ingenious structure, and the rotating part 323 of the locking assembly 32 can be rotated to conveniently connect and disconnect the pipeline connecting device with the external pipeline, and the operation process is simple and reliable.

[0078] See also Figure 4, in some embodiments, the number of rubber parts 321 and pressing blocks 322 is two or more, and the rubber parts 321 and the pressing blocks 322 are arranged in one-to-one correspondence. The number of avoidance holes 325 in the rotating member 323 is equal to the number of pressing blocks 322. A plurality of groups of rubber parts 321 and pressing blocks 322 are arranged in the circumferential direction of the pipeline connecting device, and the plurality of rubber parts 321 jointly suck and tighten the external pipeline, which can increase the contact area and contact positions of the pipeline connecting device and the external pipeline, and greatly improve the reliability of the connection between the pipeline connecting device and the external pipeline.

[0079] See Figure 4 , in some embodiments, along the circumference of the rotating member 323, the rotating member 323 is uniformly provided with a plurality of avoidance holes 325. Each pressing block 322 corresponds to one avoidance hole 325. That is to say, in the locked state, all the pressing blocks 322 simultaneously avoid all the avoidance holes 325. In the unlocked state, there is a pressing block 322 in each avoidance hole 325. In other embodiments, the pressing blocks 322 and the avoidance holes 325 are not in one-to-one correspondence, and the number of avoidance holes 325 is more than the number of pressing blocks 322, which is also possible. In the introduction state, only some of the avoidance holes 325 have pressing blocks 322. This way can also achieve the locking and unlocking of the pipeline connecting device and the external pipeline.

[0080] In each of the above embodiments, the rotating member 323 is made of a self-lubricating plastic material. A self-lubricating plastic is a material that can reduce friction and wear through its own lubricating performance without external lubricating oil. Self-lubricating plastics usually have good friction properties. Self-lubricating plastic materials such as: PA6 (polyamide 6, that is, Polyamide 6), PA66 (polyamide 66, that is, Polyamide 66), POM (polyoxymethylene, also known as "acetal" or "plastic steel"), etc., so that the rotating member 323 is smoother during rotation.

[0081] See Figure 2 Or Figure 10 , in some embodiments, the outer wall of the rotating member 323 is provided with an anti-slip portion 328, and the anti-slip portion 328 is specifically a rib. The provision of the anti-slip portion 328 makes it difficult for the external force to rotate the rotating member 323 to slip.

[0082] See Figure 4 Or Figure 10, in some embodiments, the rotating member 323 further includes a mating protrusion 326 located on the inner wall of the second through hole 324, and a mating protrusion 326 is provided between adjacent two relief holes 325; the mating protrusion 326 is configured to cooperate with the pressing block 322. The mating protrusion 326 is a protrusion on the inner wall of the rotating member 323. During the rotation of the rotating member 323, the movement path of the mating protrusion 326 passes through the pressing block 322. When the mating protrusion 326 abuts against the pressing block 322, the pressing block 322 is extruded in the radial direction of the pipeline connecting device, and the rubber member 321 also moves towards the central axis of the pipeline connecting device. Therefore, the gas between the concave cavity M of the rubber member 321 and the external pipeline is discharged, and the rubber member 321 is sucked tightly to the external pipeline. At this time, the rubber member 321 acts like a suction cup, the friction force between the rubber member 321 and the external pipeline increases, and the contact area also increases due to the deformation of the rubber member 321, making it difficult for the external pipeline to break away, thus improving the locking effect.

[0083] Continue to refer to Figure 4 and Figure 10 , in some embodiments, the surface of the pressing block 322 facing the mating protrusion 326 is configured as a convex first arc surface a, and the surface of the mating protrusion 326 facing the pressing block 322 is set as a concave second arc surface b, and the first arc surface a and the second arc surface b cooperate. The first arc surface a and the second arc surface b form a surface-to-surface cooperation, which can play a positioning role and make the contact area between the pressing block 322 and the rotating member 323 larger.

[0084] Similarly, in some other embodiments, the surface of the pressing block 322 facing the mating protrusion 326 is configured as a concave third arc surface (not shown in the figure), and the surface of the mating protrusion 326 facing the pressing block 322 is set as a convex fourth arc surface (not shown in the figure), and the third arc surface and the fourth arc surface cooperate. This implementation manner can also increase the contact area between the pressing block 322 and the rotating member 323 and can play a positioning role.

[0085] Refer to Figure 2 and Figure 8 , in some embodiments, the surface of the rubber member 321 facing the pressing block 322 is provided with a clamping portion 329, and the surface of the pressing block 322 facing the rubber member 321 is provided with a clamping groove 320, and the clamping groove 320 and the clamping portion 329 cooperate to make the rubber member 321 and the pressing block 322 form a whole. In the radial direction of the pipeline connecting device, the rubber member 321 and the pressing block 322 are almost synchronously moving. When installing the rubber member 321 and the pressing block 322 together, the clamping portion 329 is inserted into the clamping groove 320.

[0086] Refer to Figure 7 , in some embodiments, along the axial direction of the joint body 31, both ends of the installation groove 311 are provided with limiting grooves 313, refer to Figure 9, at both ends of the pressing block 322, there are provided limiting protrusions 327 which are located in the limiting grooves 313, so that when the rotating member 323 rotates relative to the joint body 31, the pressing block 322 is non-rotating relative to the joint body 31. The cooperation of the limiting grooves 313 and the limiting protrusions 327 plays a limiting role in the circumferential direction for the pressing block 322, so that the pressing block 322 will not rotate driven by the rotating member 323.

[0087] Continue to refer to Figure 9 , in some embodiments, there is a gap c provided in the limiting protrusion 327 at at least one end of both ends of the pressing block 322, and this gap c communicates with the card slot 320 introduced above, so that the card-in part 329 can be inserted into the card slot 320 more conveniently and can also be taken out of the card slot 320 very conveniently.

[0088] Figure 11 It is a three-dimensional schematic diagram of the pipeline connection device provided by other embodiments of the present invention. Figure 12 It is a three-dimensional schematic diagram of the rubber part 321 of the pipeline connection device provided by other embodiments of the present invention. Figure 13 It is a three-dimensional schematic diagram of the joint body 31 of the pipeline connection device provided by other embodiments of the present invention.

[0089] Refer to Figure 11 and Figure 12 , in some embodiments, the fixing member includes a plurality of rubber parts 321, and all the rubber parts 321 are fixedly connected to form a ring. When installing, all the rubber parts 321 can be installed at one time, which greatly simplifies the installation steps, improves the reliability of assembly, and has high installation efficiency and high installation accuracy. It should be noted that the rubber parts 321 are connected by rib strips, and a receiving groove 314 for receiving the rib strips needs to be provided at the bottom of the installation groove 311.

[0090] The embodiment of the present invention also provides an air conditioner, including the pipeline connection device provided by any technical solution of the present invention.

[0091] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for facilitating the description of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the protection scope of the present invention. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0092] In the description of the present utility model, where feasible, each technical feature can be combined with other technical features.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A pipeline connection device, characterized in that: include: A first bellows (1), wherein the material of the first bellows (1) is transparent or translucent; a second bellows (2) nested inside the first bellows (1), a cavity (P) being provided between the first bellows (1) and the second bellows (2); the material of the second bellows (2) being transparent or translucent; and At least one pipe joint assembly (3), the pipe joint assembly (3) being fixedly connected to both the first corrugated pipe (1) and the second corrugated pipe (2); the pipe joint assembly (3) being provided with a first through hole (30), the first through hole (30) being in communication with the second corrugated pipe (2).

2. The pipe connection device according to claim 1, characterized in that: The pipe joint assembly (3) comprises: A joint body (31) is provided with the first through hole (30); the outer wall of the first through hole (30) is fixedly connected to the first corrugated tube (1), and the inner wall of the first through hole (30) is fixedly connected to the second corrugated tube (2); and A locking assembly (32) is mounted on the joint body (31), and the locking assembly (32) is configured to achieve locking and unlocking of the pipeline connection device and an external pipeline.

3. The pipe connection device according to claim 2, characterized in that: The outer wall of the joint body (31) is provided with a mounting groove (311) and a mounting hole (312); the mounting hole (312) is located at the bottom of the mounting groove (311), and the mounting hole (312) is communicated with the first through hole (30) of the joint body (31); the locking assembly (32) comprises: A rubber member (321) installed inside the installation hole (312); A pressing block (322) is mounted on a side of the rubber member (321) away from the mounting hole (312); and The rotating component (323) comprises a second through hole (324) and an avoidance hole (325), wherein the avoidance hole (325) passes through the wall of the rotating component (323) and is connected to the second through hole (324); the joint body (31) passes through the second through hole (324), and the rotating component (323) is located in the mounting groove (311) of the joint body (31); the rotating component (323) is configured to rotate around the central axis of the first through hole (30) under the action of an external force, so that the pressing block (322) is located in the avoidance hole (325) or staggered from the avoidance hole (325).

4. The pipeline connection device according to claim 3, characterized in that: The number of the rubber parts (321) and the number of the pressing blocks (322) are both two or more, and the rubber parts (321) and the pressing blocks (322) are arranged in a one-to-one correspondence; the number of the avoidance holes (325) of the rotating component (323) is equal to the number of the pressing blocks (322).

5. The pipe connection device according to claim 4, characterized in that: A plurality of avoidance holes (325) are evenly arranged along the circumference of the rotating component (323).

6. The pipe connection device according to claim 4, characterized in that: The rotating component (323) further comprises a matching protrusion (326), wherein the matching protrusion (326) is located on the inner wall of the second through hole (324), and the matching protrusion (326) is provided between two adjacent avoidance holes (325); the matching protrusion (326) is constructed to match with the pressing block (322).

7. The pipeline connection device according to claim 6, characterized in that: The surface of the pressing block (322) facing the mating protrusion (326) is constructed as a convex first curved surface (a), and the surface of the mating protrusion (326) facing the pressing block (322) is set as a concave second curved surface (b), and the first curved surface (a) and the second curved surface (b) are matched; or, the surface of the pressing block (322) facing the mating protrusion (326) is constructed as a concave third curved surface, and the surface of the mating protrusion (326) facing the pressing block (322) is set as a convex fourth curved surface, and the third curved surface and the fourth curved surface are matched.

8. The pipeline connection device according to claim 3, characterized in that: The surface of the rubber member (321) facing the pressure block (322) is provided with a snap-in portion (329), and the surface of the pressure block (322) facing the rubber member (321) is provided with a snap-in groove (320), and the snap-in groove (320) and the snap-in portion (329) cooperate with each other.

9. The pipeline connection device according to claim 3, characterized in that: Along the axial direction of the joint body (31), limiting grooves (313) are arranged at both ends of the mounting groove (311), and limiting protrusions (327) are arranged at both ends of the pressing block (322), and the limiting protrusions (327) are located in the limiting grooves (313), so that when the rotating component (323) rotates relative to the joint body (31), the pressing block (322) is non-rotatable relative to the joint body (31).

10. The pipeline connection device according to claim 9, characterized in that: The limiting protrusion (327) at at least one of the two ends of the pressing block (322) is provided with a gap (c).

11. The pipeline connection device according to claim 3, characterized in that: The fixing component comprises a plurality of rubber pieces (321), and all of the rubber pieces (321) are fixedly connected to form a ring shape.

12. The pipeline connection device according to claim 3, characterized in that: The outer wall of the rotating component (323) is provided with an anti-slip portion (328).

13. The pipeline connection device according to claim 1, characterized in that: The number of the pipe joint assemblies (3) is two, and the structures of the two pipe joint assemblies (3) are the same; one end of the first bellows (1) and one end of the second bellows (2) are fixedly connected via one of the pipe joint assemblies (3), and the other end of the first bellows (1) and the other end of the second bellows (2) are fixedly connected via the other pipe joint assembly (3).

14. The pipeline connection device according to claim 1, characterized in that: The pipe joint assembly (3), the first corrugated pipe (1), and the second corrugated pipe (2) are all fixed by hot melting.

15. The pipeline connection device according to claim 1, characterized in that: A sealing member (34) is installed on the inner wall of the pipe joint assembly (3), and the sealing member (34) is configured to be sealed and connected to an external pipeline.

16. The pipeline connection device according to claim 15, characterized in that: There are a plurality of sealing members (34), and the plurality of sealing members (34) are dispersedly arranged along the axial direction of the pipe joint assembly (3).

17. The pipeline connection device according to claim 1, characterized in that: The ends of the first bellows (1) and the second bellows (2) are both provided with convex rings (10), the inner wall and the outer wall of the pipe joint assembly (3) are both provided with concave rings (33) correspondingly, and the convex ring (10) is located in the concave ring (33); or, the ends of the first bellows (1) and the second bellows (2) are both provided with concave rings (33), the inner wall and the outer wall of the pipe joint assembly (3) are both provided with convex rings (10) correspondingly, and the convex ring (10) is located in the concave ring (33).

18. An air conditioner, characterized in that: include: The pipe connection device according to any one of claims 1 to 17.

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