Header assembly

Abstract

The utility model provides a kind of gas collecting pipe assembly, including first connecting structure, bellows, second connecting structure and connecting pipe, two ends of bellows are connected with the one end of first connecting structure, the one end of second connecting structure respectively, the other end of second connecting structure is connected with connecting pipe.In the present scheme, the first connecting structure of gas collecting pipe assembly and connecting pipe are used to connect with other pipeline, bellows is used between two connecting structures, since bellows has good flexibility and bendability, bellows is used as intermediate pipeline, can realize large amplitude bending and bending operation without the help of pipe spring, can still be convenient construction under the working condition that installation space is limited, complex or need frequent adjustment, to improve installation efficiency and applicability.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and more specifically, to a gas collection pipe assembly. Background Technology

[0002] Air conditioners and other similar equipment require refrigerant transfer via manifold assemblies during operation. Existing manifold assemblies typically consist of connecting pipes, which are bent to a certain extent after forming to meet installation requirements. To prevent the connecting pipes from being flattened or twisted during installation due to bending or twisting, related technologies often use protective springs on the outside of the pipes to improve their mechanical strength and resistance to deformation. However, the connecting pipes are still susceptible to metal fatigue and cracking during bending, limiting the extent of bending or twisting that the manifold assembly can achieve and restricting the installation locations of both indoor and outdoor air conditioning units. Utility Model Content

[0003] This invention provides a gas collection pipe assembly to solve the problem that the installation location of air conditioning indoor and outdoor units is limited due to the inability of the gas collection pipe assembly to bend significantly in the prior art.

[0004] To address the aforementioned problems, this utility model provides an air collection pipe assembly, comprising a first connecting structure, a corrugated pipe, a second connecting structure, and a connecting pipe. The two ends of the corrugated pipe are respectively connected to one end of the first connecting structure and one end of the second connecting structure, and the other end of the second connecting structure is connected to the connecting pipe.

[0005] Furthermore, the second connection structure includes a connector, one end of which is directly or indirectly connected to the bellows, and the other end of which has at least two slots. There are at least two connecting pipes, and one end of each connecting pipe is fixed in a corresponding slot.

[0006] Furthermore, the other end of the connector includes a first C-shaped wall, a second C-shaped wall, and two opposing constricted walls. The first C-shaped wall and the second C-shaped wall respectively form a slot around each other. The openings of the first C-shaped wall and the second C-shaped wall are arranged facing each other, and the first C-shaped wall and the second C-shaped wall are connected by the two constricted walls.

[0007] Furthermore, the distance between two adjacent constricted walls is A, and the distance between the center of the first C-shaped wall and the center of the second C-shaped wall on a cross section perpendicular to the axis of the joint is B, where A < B.

[0008] Furthermore, one end of the connecting tube is welded to the inner wall of the corresponding slot; one of the inner wall of the slot and the outer wall of the connecting tube has multiple grooves, and the other of the inner wall of the slot and the outer wall of the connecting tube has multiple protrusions.

[0009] Furthermore, the joint is a stamped integral structure; and / or, the joint and the bellows are an integral structure.

[0010] Furthermore, the side wall of one end of the connecting tube inserted into the slot has a positioning groove, and the inner wall of the slot has a protrusion. After one end of the connecting tube is inserted into the slot, the protrusion and the positioning groove are engaged in a limiting fit; or, the side wall of one end of the connecting tube inserted into the slot has a protrusion, and the inner wall of the slot has a positioning groove. After one end of the connecting tube is inserted into the slot, the protrusion and the positioning groove are engaged in a limiting fit.

[0011] Alternatively, the second connection structure includes a connector, a first connecting pipe and a second connecting pipe, one end of the first connecting pipe being connected to a bellows, the other end of the first connecting pipe being connected to one end of the second connecting pipe, the other end of the second connecting pipe being connected to the connector, and the connector being connected to a connecting pipe.

[0012] Furthermore, the connector has at least two slots, and there are at least two connecting tubes, with one end of each connecting tube fixed in a corresponding slot; the second connecting tube and the connector are an integral structure or separate structures; the material of the connector and the second connecting tube is copper alloy, and the material of the first connecting tube is stainless steel.

[0013] Furthermore, one end of the first connector has a flared structure, and one end of the second connector is inserted into the flared structure and welded; or one end of the second connector has a flared structure, and one end of the first connector is inserted into the flared structure and welded.

[0014] Furthermore, the inner wall of the flared structure has multiple grooves or multiple protrusions; when the flared structure is inserted into one end of the second connector, the outer wall of the second connector has multiple grooves or multiple protrusions; when the flared structure is inserted into one end of the first connector, the outer wall of the first connector has multiple grooves or multiple protrusions.

[0015] Alternatively, the second connection structure may also include a connecting sleeve, into which the second connecting pipe is inserted and welded; the connecting sleeve and the second connecting pipe are made of the same material.

[0016] Furthermore, one end of the first connector has a flared structure, the connecting sleeve is inserted into the flared structure and welded, one of the inner wall of the flared structure and the outer wall of the connecting sleeve has multiple grooves, and the other of the inner wall of the flared structure and the outer wall of the connecting sleeve has multiple protrusions.

[0017] Furthermore, the depth of the groove is 0.03-0.2mm, the height of the protrusion is 0.03-0.2mm, and the depth of the flared structure is 4-20mm; the wall thickness of the bellows is L, the wall thickness of the first connecting pipe is L1, and the wall thickness of the flared structure is L2, wherein L≤L2≤L1.

[0018] Furthermore, the first connection structure includes a third pipe and a connector. One end of the third pipe is connected to a bellows, and the other end of the third pipe is connected to the connector. The connector has threads, and the length of the third pipe is 20-40 mm.

[0019] Furthermore, the corrugated pipe is a spiral corrugated pipe formed by twisting or spinning a seamless stainless steel tube. The wall thickness of the corrugated pipe is 0.3-2mm, and the bending radius is 25-200mm. Among them, the corrugated pipe formed by spinning a seamless stainless steel tube has a corrugation pitch of 8-10mm and a corrugation apex angle of 110°±2°; the corrugated pipe formed by twisting a seamless stainless steel tube has a corrugation pitch of 8-10mm and a corrugation crest height of 3.2-3.8mm.

[0020] In this solution, the first connecting structure and connecting pipe of the gas collection pipe assembly are used to connect with other pipelines. A corrugated pipe is used between the two connecting structures. Since the corrugated pipe has good flexibility and bendability, using the corrugated pipe as the intermediate pipeline can achieve large-scale bending and twisting operations without the aid of the protective pipe spring. It can still facilitate construction in working conditions where the installation space is limited, the route is complex, or frequent adjustments are required, thereby improving installation efficiency and applicability. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0022] Figure 1 A schematic diagram of the gas collection pipe assembly provided in Embodiment 1 of this utility model is shown;

[0023] Figure 2 It shows Figure 1 Schematic diagram of the intermediate connector;

[0024] Figure 3 It shows Figure 2 A sectional view;

[0025] Figure 4 A schematic diagram of the gas collection pipe assembly provided in Embodiment 2 of this utility model is shown;

[0026] Figure 5 A schematic diagram of the gas collection pipe assembly provided in Embodiment 3 of this utility model is shown;

[0027] Figure 6 A schematic diagram of the gas collection pipe assembly provided in Embodiment 4 of this utility model is shown;

[0028] Figure 7 It shows Figure 6A partial structural diagram;

[0029] Figure 8 It shows Figure 7 Sectional view on the SS section.

[0030] The above figures include the following reference numerals:

[0031] 10. First connecting structure; 11. Third connecting pipe; 12. Connector; 20. Corrugated pipe; 30. Second connecting structure; 31. Joint; 311. Slot; 312. First C-shaped wall; 313. Second C-shaped wall; 314. Narrowing wall; 32. First connecting pipe; 33. Second connecting pipe; 34. Connecting sleeve; 40. Connecting pipe; 50. Flared structure. Detailed Implementation

[0032] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0033] like Figures 1 to 8 As shown, an embodiment of the present invention provides an air collection pipe assembly, including a first connecting structure 10, a corrugated pipe 20, a second connecting structure 30, and a connecting pipe 40. The two ends of the corrugated pipe 20 are respectively connected to one end of the first connecting structure 10 and one end of the second connecting structure 30, and the other end of the second connecting structure 30 is connected to the connecting pipe 40.

[0034] In this embodiment, the first connecting structure 10 and the connecting pipe 40 in the gas collection pipe assembly are used to connect with other pipes. A corrugated pipe 20 is used between the two connecting structures. Since the corrugated pipe 20 has good flexibility and bendability, using the corrugated pipe 20 as an intermediate pipe can achieve large-scale bending and twisting operations without the aid of a protective pipe spring. It can still facilitate construction in working conditions where the installation space is limited, the route is complex, or frequent adjustments are required, thereby improving installation efficiency and applicability.

[0035] The materials of the corrugated pipe 20, the two connecting structures, and the connecting pipe 40 are set as needed. For example, stainless steel or copper alloy can be used.

[0036] like Figures 1 to 3As shown, the second connection structure 30 includes a connector 31, one end of which is directly or indirectly connected to the bellows 20, and the other end of the connector 31 has at least two slots 311. There are at least two connecting pipes 40, and one end of each connecting pipe 40 is fixed in a corresponding slot 311.

[0037] In this embodiment, by providing multiple slots 311 at the end of the connector 31, the bellows 20 can be stably connected to at least two connecting pipes 40 simultaneously, thereby achieving multi-channel convergence or divergence. Furthermore, the multiple connecting pipes 40 are respectively inserted into and fixed in the independent slots 311 of the connector 31, so that each slot 311 forms a relatively independent sealed connection interface, avoiding interference and mutual compression between the connecting pipes 40, and improving assembly accuracy.

[0038] In some embodiments, after the connecting tube 40 is inserted and fixed in the slot 311, welding is performed between two adjacent slots 311 to fill the gap between the two connecting tubes 40, thereby improving the sealing reliability of the gas collection pipe assembly.

[0039] Furthermore, in some embodiments, the connector 31 and the bellows 20 can be directly connected, or a connecting pipe can be added between the connector 31 and the bellows 20 to connect them, thereby improving the adaptability of the gas collection pipe assembly in different systems or complex pipeline layouts.

[0040] like Figure 2 and Figure 3 As shown, the other end of the connector 31 includes a first C-shaped wall 312, a second C-shaped wall 313, and two opposing constricted walls 314. The first C-shaped wall 312 and the second C-shaped wall 313 respectively form a slot 311. The openings of the first C-shaped wall 312 and the second C-shaped wall 313 are arranged facing each other. The first C-shaped wall 312 and the second C-shaped wall 313 are connected by the two constricted walls 314.

[0041] In this embodiment, the first C-shaped wall 312 and the second C-shaped wall 313 are arranged facing each other to form a slot 311 with a fixing function, so that the inserted connecting pipe 40 can be limited and fixed in the radial direction, improving the stability and reliability of the connection. Moreover, the two C-shaped walls are connected by a constricted wall 314, making the two slots 311 a closed ring structure. This not only improves the overall strength and deformation resistance of the end of the connector 31, but also provides additional support after the connecting pipe 40 is inserted into the slot 311, further enhancing the sealing and pressure resistance. Furthermore, the slot 311 formed by the C-shaped wall and the constricted wall 314 can also ensure guidance during the assembly process while maintaining a compact structure, allowing the connecting pipe 40 to quickly find the correct position when inserted, simplifying the assembly complexity and improving installation efficiency. In addition, solder is placed at the opening between the two C-shaped walls, which facilitates the uniform melting and distribution of the solder, ensuring the welding quality and sealing of the connector 31 and the connecting pipe 40.

[0042] Furthermore, the distance between two adjacent constricted walls 314 is A, and the distance between the center of the first C-shaped wall 312 and the center of the second C-shaped wall 313 on a cross section perpendicular to the axis of the joint 31 is B, where A < B.

[0043] In this embodiment, the distance between the center of the first C-shaped wall 312 and the center of the second C-shaped wall 313 is greater than the distance between two adjacent constricted walls 314, so that the first C-shaped wall 312 and the second C-shaped wall 313 can be in an open state when forming the slot 311, while the constricted wall 314 is relatively more constricted, forming a gradually constricted shape. In this way, after the connecting tube 40 is inserted into the slot 311, it can generate a significant radial clamping effect, improve the constraint force and locking effect of the slot 311 on the connecting tube 40, and prevent the connecting tube 40 from loosening due to vibration, thermal expansion and contraction or external force during operation.

[0044] One end of the connecting tube 40 is welded to the inner wall of the corresponding slot 311; one of the inner wall of the slot 311 and the outer wall of the connecting tube 40 has multiple grooves, and the other of the inner wall of the slot 311 and the outer wall of the connecting tube 40 has multiple protrusions.

[0045] In this embodiment, welding the connecting pipe 40 to the inner wall of the slot 311 ensures the airtightness and pressure resistance of the gas passage. Furthermore, the inner wall of the slot 311 and the outer wall of the connecting pipe 40 are respectively provided with grooves and protrusions. This ensures the fluidity of the solder during welding, guarantees the uniformity of the weld, and forms a mutually meshing structural fit, dispersing stress concentration at the weld point and improving the structural stability and durability of the entire gas collection pipe assembly.

[0046] Specifically, the connector 31 is a stamped, integral structure; and / or, the connector 31 and the bellows 20 are an integral structure. The integral stamping of the connector 31 eliminates assembly gaps or additional welds caused by assembling separate parts, reducing potential leakage risks and meeting the requirements for use in high-airtightness or high-vacuum environments. When the connector 31 and the bellows 20 are an integral structure, welds between them are avoided, eliminating leakage points. Combined with the corrosion resistance of stainless steel, this further enhances the sealing and reliability of the gas collection pipe assembly.

[0047] Furthermore, the side wall of one end of the connecting tube 40 inserted into the slot 311 has a positioning groove, and the inner wall of the slot 311 has a protrusion. After one end of the connecting tube 40 is inserted into the slot 311, the protrusion and the positioning groove are engaged in a limiting fit; or, the side wall of one end of the connecting tube 40 inserted into the slot 311 has a protrusion, and the inner wall of the slot 311 has a positioning groove. After one end of the connecting tube 40 is inserted into the slot 311, the protrusion and the positioning groove are engaged in a limiting fit.

[0048] In this embodiment, by providing a bubble and a positioning groove on the contact surfaces of the connecting pipe 40 and the slot 311 respectively, a stable limiting fit can be formed between the connecting pipe 40 and the slot 311 after assembly. This prevents the connecting pipe 40 from undergoing axial or radial displacement due to external forces, vibration, or thermal expansion and contraction, thereby improving the stability and safety of the gas collection pipe assembly under long-term operating conditions. Moreover, the fit between the connecting pipe 40 and the slot 311 also provides guidance and positioning, avoiding inconsistent insertion depths or deviations caused by manual assembly errors.

[0049] Optionally, the wall thickness of the bellows 20 is L, the wall thickness of the connector 31 is L3, and the wall thickness of the spun section of the bellows 20 is L4, where L4≤L3≤L; the width of the constricted wall 314 is 0-5mm, and the length of the connector 31 extending axially in the bellows 20 is 4-20mm; the depth of the groove is 0.03-0.2mm, and the height of the protrusion is 0.03-0.2mm. This ensures both the structural strength of the connector 31 and the bellows 20, and the flexibility of the bellows 20.

[0050] In the second embodiment of this utility model, as Figure 4 As shown, the second connection structure 30 includes a connector 31, a first connecting pipe 32 and a second connecting pipe 33. One end of the first connecting pipe 32 is connected to the bellows 20, the other end of the first connecting pipe 32 is connected to one end of the second connecting pipe 33, the other end of the second connecting pipe 33 is connected to the connector 31, and the connector 31 is connected to the connecting pipe 40.

[0051] In the second embodiment of this utility model, by setting a first connecting pipe 32 and a second connecting pipe 33 between one end of the corrugated pipe 20 and the connector 31, the flexibility and adaptability of the gas collection pipe assembly are improved, which can meet the needs of different application scenarios.

[0052] Furthermore, the connector 31 has at least two slots 311, and there are at least two connecting tubes 40, with one end of each connecting tube 40 fixed in a corresponding slot 311; the second connecting tube 33 and the connector 31 are an integral structure or a separate structure; the materials of the connector 31 and the second connecting tube 33 are copper alloys, and the material of the first connecting tube 32 is stainless steel.

[0053] In the second embodiment of this utility model, the end of the connector 31 is provided with multiple slots 311, which form independent fixed connections with multiple connecting pipes 40 respectively. This allows the bellows 20 to be connected to multiple connecting pipes 40 simultaneously through the first connecting pipe 32, the second connecting pipe 33, and the connector 31, realizing the function of gas collection. This improves the overall performance of the gas collection pipe assembly, enables multi-path connections in complex circuits, reduces the number of additional connectors and pipes, thereby simplifying the system structure, reducing assembly difficulty, and space occupation. Moreover, the second connecting pipe 33 and the connector 31 can be configured as an integral or separate structure. The integral design reduces the number of welds and improves the sealing performance and structural strength of the gas collection pipe assembly; the separate design facilitates processing and replacement, improves maintenance convenience and manufacturing process adaptability, thus allowing for flexible selection according to different process conditions and application requirements.

[0054] In some embodiments, the connector 31 and the second connecting pipe 33 are made of copper alloy, which can ensure the ease of welding between the connector 31 and the connecting pipe 40, and between the second connecting pipe 33 and the connector 31; the first connecting pipe 32 is made of stainless steel, which can form a stable welding interface with the bellows, thereby improving the overall sealing performance of the gas collection pipe assembly and reducing the overall manufacturing cost and weight.

[0055] like Figure 4 and Figure 5 In embodiments two and three of this invention, one end of the first connecting pipe 32 has a flared structure 50, and one end of the second connecting pipe 33 is inserted into the flared structure 50 and welded. In embodiment three of this invention, one end of the second connecting pipe 33 has a flared structure 50, and one end of the first connecting pipe 32 is inserted into the flared structure 50 and welded. By providing a flared structure 50 at the end of the connecting pipe, a guiding function can be provided for the insertion of the other connecting pipe, avoiding misalignment caused by manual assembly errors. Furthermore, the flared structure 50 provides a larger contact area, increasing the welding area after insertion and improving the weld's strength.

[0056] The flared structure 50 has multiple grooves or protrusions on its inner wall; when one end of the second connector 33 is inserted into the flared structure 50, the outer wall of the second connector 33 has multiple grooves or protrusions; when one end of the first connector 32 is inserted into the flared structure 50, the outer wall of the first connector 32 has multiple grooves or protrusions. By providing grooves or protrusions on the inner wall of the flared structure 50 and the outer wall of the connector, the fluidity of the solder can be ensured during welding, the uniformity of the welding can be ensured, and a mutually meshing structural fit can be formed, dispersing stress concentration at the weld point and improving the structural stability and durability of the entire gas collecting pipe assembly.

[0057] In embodiment four of this utility model, as Figures 6 to 8 As shown, the second connection structure 30 also includes a connecting sleeve 34, and the second connecting pipe 33 is inserted into the connecting sleeve 34 and welded to the connecting sleeve 34; the connecting sleeve 34 and the second connecting pipe 33 are made of the same material. By setting a connecting sleeve 34 of the same material as the second connecting pipe 33 and inserting the second connecting pipe 33 into the connecting sleeve 34 for welding, welding is more convenient when the two materials are the same, thereby improving the reliability of welding and ensuring the sealing of the connection part.

[0058] like Figures 6 to 8 As shown, one end of the first connecting pipe 32 has a flared structure 50, and the connecting sleeve 34 is inserted into the flared structure 50 and welded. One of the inner wall of the flared structure 50 and the outer wall of the connecting sleeve 34 has multiple grooves, and the other of the inner wall of the flared structure 50 and the outer wall of the connecting sleeve 34 has multiple protrusions.

[0059] In the fourth embodiment of this utility model, a flared structure 50 is provided at one end of the first connecting pipe 32, and the connecting sleeve 34 is inserted into the flared structure 50 and welded. At the same time, the groove and protrusion between the inner wall of the flared structure 50 and the outer wall of the connecting sleeve 34 can not only enhance the fluidity of the solder, thereby increasing the welding contact area and improving the welding strength, but also ensure the sealing performance.

[0060] Furthermore, the depth of the groove is 0.03-0.2mm, the height of the protrusion is 0.03-0.2mm, and the depth of the flared structure 50 is 4-20mm; the wall thickness of the bellows 20 is L, the wall thickness of the first connecting pipe 32 is L1, and the wall thickness of the flared structure 50 is L2, wherein L≤L2≤L1. This ensures the contact area of ​​the welded parts, thereby improving the welding strength and sealing performance. Moreover, by setting the wall thickness L of the bellows 20, the wall thickness L1 of the first connecting pipe 32, and the wall thickness L2 of the flared structure 50 to L≤L2≤L1, the welded parts have sufficient structural strength while maintaining the flexibility of the bellows 20, enabling them to withstand long-term vibration, thermal expansion stress, and external impact, thus improving the reliability and service life of the gas collecting pipe assembly.

[0061] like Figure 1As shown, the first connection structure 10 includes a third pipe 11 and a connector 12. One end of the third pipe 11 is connected to the bellows 20, and the other end of the third pipe 11 is connected to the connector 12. The connector 12 has threads, and the length of the third pipe 11 is 20-40 mm.

[0062] In this embodiment, by setting a third connecting pipe 11 and a threaded connector 12, and connecting the end of the third connecting pipe 11 without the connector 12 to the bellows 20, a stable connection between the bellows 20 and the external equipment is achieved. Moreover, the length of the third connecting pipe 11 is set to 20-40mm, which can disperse the connection stress while ensuring the flexibility of the bellows 20, avoid local stress concentration, and improve the interface sealing and structural durability.

[0063] Furthermore, the corrugated pipe 20 is a spiral corrugated pipe formed by twisting or spinning a seamless stainless steel tube. The wall thickness of the corrugated pipe 20 is 0.3-2mm, and the bending radius is 25-200mm. Among them, the corrugated pipe formed by spinning a seamless stainless steel tube has a corrugated pitch of 8-10mm and a corrugated apex angle of 110°±2°; the corrugated pipe formed by twisting a seamless stainless steel tube has a corrugated pitch of 8-10mm and a corrugated peak height of 3.2-3.8mm.

[0064] In this embodiment, these dimensional constraints give the bellows 20 good flexibility and bendability, enabling it to bend significantly in complex spatial layouts without flattening or twisting. At the same time, the reasonable wall thickness and corrugated geometry parameters enhance pressure resistance and sealing reliability. The helical corrugated structure can absorb vibration and thermal expansion stress, reducing the risk of fatigue failure caused by long-term vibration or thermal cycling. In addition, the bellows 20 in this application can adapt to various installation environments, improving the flexibility and ease of construction of the air conditioning equipment's gas collection pipe layout.

[0065] In this application, the gas collecting pipe assembly eliminates the spring component. Furthermore, the first connecting structure 10 and the connecting pipes such as the corrugated pipe 20 are made of stainless steel or other alloy materials such as SUS304, SUS304L, SUS316, and SUS316L, reducing the procurement cost of raw materials and the overall weight of the gas collecting pipe assembly. Moreover, the gas collecting pipe assembly in this application, due to the use of the corrugated pipe 20, possesses excellent sealing performance and flexibility. It can be bent and flexed freely during installation, adapting to different installation environments and spatial layouts. It maintains stable performance even in situations with limited space or requiring frequent bending. It also absorbs vibration and stress caused by thermal expansion, maintaining stable performance under extreme conditions and reducing the frequency of equipment maintenance.

[0066] The above description is merely an optional embodiment of this solution and is not intended to limit the solution. Various modifications and variations can be made to this solution by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this solution should be included within the scope of protection of this solution.

[0067] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0068] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary only and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0069] In the description of this solution, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing this solution and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this solution. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0070] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0071] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this solution.

Claims

1. A gas collecting pipe assembly, characterized in that, It includes a first connecting structure (10), a bellows (20), a second connecting structure (30), and a connecting pipe (40). The two ends of the bellows (20) are respectively connected to one end of the first connecting structure (10) and one end of the second connecting structure (30), and the other end of the second connecting structure (30) is connected to the connecting pipe (40).

2. The gas collection pipe assembly according to claim 1, characterized in that, The second connection structure (30) includes a connector (31), one end of which is directly or indirectly connected to the corrugated pipe (20), and the other end of the connector (31) has at least two slots (311). There are at least two connecting pipes (40), and one end of each connecting pipe (40) is fixed in a corresponding slot (311).

3. The gas collection pipe assembly according to claim 2, characterized in that, The other end of the connector (31) includes a first C-shaped wall (312), a second C-shaped wall (313), and two opposing constricted walls (314). The first C-shaped wall (312) and the second C-shaped wall (313) respectively form a slot (311). The openings of the first C-shaped wall (312) and the second C-shaped wall (313) are arranged facing each other. The first C-shaped wall (312) and the second C-shaped wall (313) are connected by the two constricted walls (314).

4. The gas collection pipe assembly according to claim 3, characterized in that, The distance between two adjacent constricted walls (314) is A, and the distance between the center of the first C-shaped wall (312) and the center of the second C-shaped wall (313) on a cross section perpendicular to the axis of the joint (31) is B, where A < B.

5. The gas collection pipe assembly according to claim 2, characterized in that, One end of the connecting tube (40) is welded to the inner wall of the corresponding slot (311); one of the inner wall of the slot (311) and the outer wall of the connecting tube (40) has multiple grooves, and the other of the inner wall of the slot (311) and the outer wall of the connecting tube (40) has multiple protrusions.

6. The gas collection pipe assembly according to claim 2, characterized in that, The connector (31) is a stamped integral structure; and / or, the connector (31) and the bellows (20) are an integral structure.

7. The gas collection pipe assembly according to claim 2, characterized in that, The connecting tube (40) has a positioning groove on the side wall of one end inserted into the slot (311), and a protrusion is provided on the inner wall of the slot (311). After one end of the connecting tube (40) is inserted into the slot (311), the protrusion is in a limiting fit with the positioning groove; or, the connecting tube (40) has a protrusion on the side wall of one end inserted into the slot (311), and a positioning groove is provided on the inner wall of the slot (311). After one end of the connecting tube (40) is inserted into the slot (311), the protrusion is in a limiting fit with the positioning groove.

8. The gas collection pipe assembly according to claim 1, characterized in that, The second connection structure (30) includes a connector (31), a first connecting pipe (32) and a second connecting pipe (33). One end of the first connecting pipe (32) is connected to the corrugated pipe (20), the other end of the first connecting pipe (32) is connected to one end of the second connecting pipe (33), the other end of the second connecting pipe (33) is connected to the connector (31), and the connector (31) is connected to the connecting pipe (40).

9. The gas collection pipe assembly according to claim 8, characterized in that, The connector (31) has at least two slots (311), and there are at least two connecting tubes (40), with one end of each connecting tube (40) fixed in a corresponding slot (311); the second connecting tube (33) and the connector (31) are an integral structure or a separate structure; the materials of the connector (31) and the second connecting tube (33) are copper alloys, and the material of the first connecting tube (32) is stainless steel.

10. The gas collection pipe assembly according to claim 8, characterized in that, One end of the first connector (32) has a flared structure (50), and one end of the second connector (33) is inserted into the flared structure (50) and welded; or one end of the second connector (33) has a flared structure (50), and one end of the first connector (32) is inserted into the flared structure (50) and welded.

11. The gas collection pipe assembly according to claim 10, characterized in that, The inner wall of the flared structure (50) has multiple grooves or multiple protrusions; when one end of the second connector (33) is inserted into the flared structure (50), the outer wall of the second connector (33) has multiple grooves or multiple protrusions; when one end of the first connector (32) is inserted into the flared structure (50), the outer wall of the first connector (32) has multiple grooves or multiple protrusions.

12. The gas collecting pipe assembly according to claim 8, characterized in that, The second connection structure (30) further includes a connecting sleeve (34), the second connecting pipe (33) is inserted into the connecting sleeve (34) and welded to the connecting sleeve (34); the connecting sleeve (34) and the second connecting pipe (33) are made of the same material.

13. The gas collection pipe assembly according to claim 12, characterized in that, One end of the first connector (32) has a flared structure (50), the connecting sleeve (34) is inserted into the flared structure (50) and welded, one of the inner wall of the flared structure (50) and the outer wall of the connecting sleeve (34) has multiple grooves, and the other of the inner wall of the flared structure (50) and the outer wall of the connecting sleeve (34) has multiple protrusions.

14. The gas collection pipe assembly according to claim 11 or 13, characterized in that, The groove has a depth of 0.03-0.2 mm, the protrusion has a height of 0.03-0.2 mm, and the flared structure (50) has a depth of 4-20 mm; the corrugated pipe (20) has a wall thickness of L, the first connecting pipe (32) has a wall thickness of L1, and the flared structure (50) has a wall thickness of L2, wherein L≤L2≤L1.

15. The gas collection pipe assembly according to claim 1, characterized in that, The first connection structure (10) includes a third pipe (11) and a connector (12). One end of the third pipe (11) is connected to the corrugated pipe (20), and the other end of the third pipe (11) is connected to the connector (12). The connector (12) has a thread, and the length of the third pipe (11) is 20-40 mm.

16. The gas collection pipe assembly according to claim 1, characterized in that, The corrugated pipe (20) is a spiral corrugated pipe formed by twisting or spinning a stainless steel seamless pipe. The wall thickness of the corrugated pipe (20) is 0.3-2mm, and the bending radius is 25-200mm. The corrugated pipe formed by spinning the stainless steel seamless pipe has a corrugated pitch of 8-10mm and a corrugated apex angle of 110°±2°. The corrugated pipe formed by twisting the stainless steel seamless pipe has a corrugated pitch of 8-10mm and a corrugated peak height of 3.2-3.8mm.

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