Four-way valve pipe
By adopting a baffle ring and engraving structure design in the air conditioning system, the problem of uneven welding flux during flame welding of copper pipes and stainless steel pipes was solved, improving the airtightness and structural strength of the weld and ensuring welding quality.
Patent Information
- Application Number
- CN202422748737.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-12
AI Technical Summary
In air conditioning systems, during flame welding of copper and stainless steel pipes, the weld molten metal tends to concentrate in areas with larger gaps, leading to incomplete welds in areas with smaller gaps, which affects airtightness and structural strength.
The design incorporates a baffle ring and a wire-cutting structure within the connection section. The baffle ring seals the bottom of the weld bead, while the wire-cutting structure uses a flow equalization section and a flow distribution section to ensure uniform solder flow. Combined with conical, outward-curving, and wavy structures, this design ensures uniform solder distribution.
This solved the problem of uneven welding flux during welding, improved the airtightness and structural strength of the weld, and ensured welding quality.
Smart Images
Figure CN223537194U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of refrigeration piping technology, and in particular relates to a four-way valve pipe. Background Technology
[0002] In air conditioning systems, connections between two stainless steel pipes are common. Direct welding between two stainless steel pipes is typically done through fusion welding. However, air conditioning systems cannot use fusion welding; instead, flame welding is required. Therefore, a copper fitting is installed at the end of the stainless steel pipe to connect them. However, during flame welding, the uneven distribution of the gap between the copper fitting and the stainless steel pipe on their circumference causes the weld molten metal to concentrate in areas with larger gaps, resulting in incomplete welds in areas with smaller gaps. This leads to issues with airtightness and structural strength. Utility Model Content
[0003] The technical problem to be solved by this utility model is:
[0004] How to solve the problem of incomplete welds that easily occur when welding copper pipes and stainless steel pipes with flame.
[0005] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this utility model, which adopts the following technical solution:
[0006] A four-way valve tube, comprising:
[0007] The tube body has a connecting part one at one end and a connecting part two at the other end. The inner diameters of connecting part one and connecting part two are larger than the inner diameter of the tube body.
[0008] Connecting pipe one, which is installed inside connecting part one and partially exposed on the outside of connecting part one;
[0009] Connecting pipe two is installed inside connecting part two and partially exposed on the outside of connecting part two;
[0010] Among them, the connecting part one and the connecting part two are equipped with material retaining rings.
[0011] In this application, a wire-cutting structure is provided on the outer side of the ends of the first and second connecting pipes or on the inner wall of the first and second connecting parts.
[0012] In this application, the filament-cutting structure includes multiple flow-dividing sections and flow-equalizing sections that are staggered along the axial direction. The flow-dividing section consists of several circumferentially evenly distributed filament grooves, which are spiral structures. The flow-equalizing section consists of circumferentially arranged filament grooves, which are connected to the filament grooves.
[0013] In this application, the depth of the second wire groove gradually increases along the direction near the end of the pipe opening.
[0014] In this application, both the ends of the first connecting pipe and the second connecting pipe are provided with a tapered structure, and the taper of the tapered structure is 2°.
[0015] In this application, the baffle ring has an opening, the length of which is one-fifteenth to one-tenth of the overall length of the baffle ring.
[0016] In this application, the two ends of the tube are provided with outward-curving structures, which are rolled outward by 10°-30°.
[0017] In this application, both the outer and inner sides of one end of the connecting pipe one and the connecting pipe two are circumferentially provided with continuously arranged wavy structures, the maximum depth of which is 0.1 mm. The wavy structure located on the outer side is located on the outer side of the top of the baffle ring.
[0018] The present application also includes a thin branch pipe, which has a capillary drainage groove at its end and an outward flange on its body. The thin branch pipe is installed inside the outward flange and communicates with the inside of the body.
[0019] The present application also includes a second thin branch pipe, which has a capillary drainage groove at its end and an outward flange on its body. The second thin branch pipe is installed inside the outward flange and communicates with the inside of the body.
[0020] Compared with the prior art, the present invention has the following beneficial effects:
[0021] 1. This utility model provides baffle rings inside the first and second connecting parts to seal the bottom of the weld bead. When the connecting pipe is installed and before welding, the baffle rings are in a closed state. The connecting pipe and the connecting part are designed with an interference fit to prevent the molten solder from leaking out at the large gap and affecting the amount of solder in other positions, thus solving the problems of airtightness and structural strength caused by incomplete welding.
[0022] 2. This utility model solves the problem of uneven circumferential solder flow rate in the weld bead by setting a wire-cutting structure on connecting pipe one and connecting pipe two, so that the solder is guided downward at the first moment of melting, preventing too much from flowing to the position with large gaps, thereby solving the problem of defects in the position with small gaps.
[0023] 3. This utility model consists of a flow equalization section and a flow splitting section forming a filament structure. The flow equalization section and the flow splitting section are located on both sides of the flow equalization section. The filament grooves of the flow splitting section are staggered in the circumferential direction, which makes the circumferential flow uniform in the filament grooves, which is conducive to improving the circumferential uniformity. At the same time, since the filament grooves are spiral in shape, it is also beneficial to improve the structural strength.
[0024] 4. The present invention adopts a tapered structure at the end of the connecting pipe, which facilitates assembly.
[0025] 5. The present invention adopts an outward-flaring structure at the end of the tube body, which is beneficial to the mechanical performance of the connection. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0027] Figure 2 This is the front view of the present invention.
[0028] Figure 3 This is a top view of the present invention.
[0029] Figure 4 This is a diagram showing the connection relationship between connecting pipe one and connecting part one, and connecting pipe two and connecting part two.
[0030] Figure 5 This is a schematic diagram of the end structure of connecting pipe one.
[0031] Figure 6 This is a schematic diagram of the material retaining ring.
[0032] Figure 7 This is an enlarged schematic diagram of the location of the first fine branch tube.
[0033] Figure 8 This is an enlarged schematic diagram showing the location of the second fine branch.
[0034] Figure 9 This is a schematic diagram of the structure of Example 8.
[0035] Figure 10 for Figure 9 A schematic diagram of the structure at the end of the connecting pipe.
[0036] In the diagram: 10. Pipe body; 11. Connecting part; 12. Connecting part two; 20. Connecting pipe two; 201. Corrugated structure; 30. Connecting pipe two; 40. Material retaining ring; 50. Flow dividing part; 51. Wire groove one; 60. Flow equalizing part; 70. Conical structure; 80. Outward-turned structure; 90. Fine branch pipe one; 100. Fine branch pipe two. Detailed Implementation
[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0038] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0039] Example 1, such as Figures 1 to 3 As shown, a four-way valve pipe includes:
[0040] The tube body 10 has a connecting part 11 at one end and a connecting part 2 12 at the other end. The inner diameter of the connecting part 11 and the connecting part 2 12 is larger than the inner diameter of the tube body 10.
[0041] Connecting pipe 20 is installed inside connecting part 11 and partially exposed on the outside of connecting part 11.
[0042] Connecting pipe 2 30 is installed inside connecting part 2 12 and partially exposed on the outside of connecting part 2 12;
[0043] Among them, the connecting part 11 and the connecting part 2 are equipped with a retaining ring 40.
[0044] By clamping the retaining ring 40 inside the connecting part 11 and the connecting part 22, and by using the interference fit of the connecting pipe 1 20 and the connecting pipe 2 30 inside the pipe body 10 until they are attached to the retaining ring 40, the end is sealed, and the problem of missing welds at small gaps will not occur during flame welding.
[0045] Example 2, based on the above examples, makes the following improvements, such as... Figure 5 As shown, a etched wire structure is provided on the outer side of the ends of the first connecting pipe 20 and the second connecting pipe 30, or on the inner wall of the first connecting part 11 and the second connecting part 12. The etched wire structure guides the solder downwards at the first moment of melting, preventing the solder from accumulating and flowing downwards into large gaps.
[0046] Example 3, based on the above examples, makes the following improvements, such as... Figure 5 As shown, the wire cutting structure includes multiple flow-dividing sections 50 and flow-equalizing sections 60 that are staggered along the axial direction. The flow-dividing section 50 consists of several circumferentially evenly distributed wire grooves 51, which are spiral structures. The flow-equalizing section 60 consists of circumferentially arranged wire grooves 51, which are connected to the wire grooves 51.
[0047] In this section, the flow distribution sections 50 located on both sides of the flow equalization section 60 have staggered grooves 51 in the circumferential direction. The grooves 51 achieve uniform flow guidance while increasing the mechanical properties after welding. The grooves 51 can achieve circumferential uniform flow of the welding liquid guided downward by the upper grooves 51, thereby ensuring that the solder can fully fill the weld bead, ensuring the continuity of the circumferential weld bead, and ensuring the airtightness and mechanical properties after welding.
[0048] Example 4, based on the above examples, makes the following improvements, such as... Figure 4 As shown, the depth of the second wire groove gradually increases towards the end of the tube opening. The second wire groove can intercept part of the solder, which is beneficial for the circumferential uniform flow of the solder.
[0049] Example 5, based on the above examples, makes the following improvements, such as... Figure 4 As shown, both the ends of the connecting pipe 20 and the connecting pipe 30 are provided with a tapered structure 70, the tapered structure 70 having a taper of 2°, which facilitates installation.
[0050] Example 6, based on the above examples, makes the following improvements, such as... Figure 6 As shown, the baffle ring 40 is provided with an opening, the length of which is one-fifteenth to one-tenth of the overall length of the baffle ring 40. The opening of the baffle ring 40 can achieve a certain elastic deformation, and after the connecting pipe 20 and the connecting pipe 30 are installed in the pipe body 10, the ends are tightly fitted. When the connecting pipe is installed, the baffle ring 40 is in a closed state.
[0051] Example 7, based on the above examples, makes the following improvements, such as... Figure 4 As shown, the two ends of the pipe body 10 are provided with outward-curving structures 80, which are rolled outward by 10°-30°. The outward-curving structures 80 facilitate the installation of the pipe and also improve the structural strength at that location.
[0052] Example 8, based on Example 1 above, makes the following improvements, such as... Figure 8 and Figure 9 As shown, both the outer and inner sides of one end of the connecting pipe 20 and the connecting pipe 30 are circumferentially provided with continuously arranged wavy structures 201. The maximum depth of the wavy structure 201 is 0.1 mm, and the outer wavy structure 201 is located outside the top of the baffle ring 40. The wavy structure 201 helps to improve the structural strength of the end of the connecting pipe and also achieves a certain drainage effect.
[0053] Example 9, based on the above examples, makes the following improvements, such as... Figure 7 , Figure 8As shown, it also includes a thin branch tube 90, with a capillary drainage groove at the end of the thin branch tube 90, and an outward flange on the tube body 10. The thin branch tube 90 is installed inside the outward flange and communicates with the inside of the tube body 10.
[0054] It also includes a second thin branch pipe 100, the end of which is provided with a capillary drainage groove. The pipe body 10 is provided with an outward flange, and the second thin branch pipe 100 is installed inside the outward flange and communicates with the inside of the pipe body 10. By using the interference fit between the outward flange and the thin branch pipe and the capillary drainage groove to guide the welding liquid axially, an effective fixed installation can be achieved.
[0055] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.
Claims
1. A four-way valve pipe, characterized in that, include: The tube body (10) has a connecting part one (11) at one end and a connecting part two (12) at the other end. The inner diameters of the connecting part one (11) and the connecting part two (12) are larger than the inner diameter of the tube body (10). Connecting pipe 1 (20) is installed inside connecting part 1 (11) and partially exposed outside connecting part 1 (11); Connecting pipe two (30) is installed inside connecting part two (12) and partially exposed on the outside of connecting part two (12); Among them, the connecting part one (11) and the connecting part two (12) are equipped with a baffle ring (40).
2. A four-way valve pipe according to claim 1, characterized in that, A wire-cutting structure is provided on the outer side of the end of the first connecting pipe (20) and the second connecting pipe (30) or on the inner wall of the first connecting part (11) and the second connecting part (12).
3. A four-way valve pipe according to claim 2, characterized in that, The wire cutting structure includes multiple flow-dividing sections (50) and flow-uniforming sections (60) that are staggered along the axial direction. The flow-dividing section (50) consists of several circumferentially evenly distributed wire grooves (51), which are spiral structures. The flow-uniforming section (60) consists of circumferentially arranged wire grooves (2), which are connected to the wire grooves (1).
4. A four-way valve pipe according to claim 3, characterized in that, The wire grooves (51) of the flow distribution section (50) located on both sides of the flow uniform section (60) are staggered in the circumferential direction.
5. A four-way valve pipe according to claim 3, characterized in that, The depth of the second wire groove gradually increases along the direction near the end of the pipe opening.
6. A four-way valve pipe according to claim 1, characterized in that, Both the ends of the first connecting pipe (20) and the second connecting pipe (30) are provided with a tapered structure (70), and the taper of the tapered structure (70) is 2°.
7. A four-way valve pipe according to claim 1, characterized in that, An opening is provided on the baffle ring (40), the length of which is one-fifteenth to one-tenth of the overall length of the baffle ring (40).
8. A four-way valve pipe according to claim 1, characterized in that, The tube body (10) is provided with outward-curving structures (80) at both ends, and the outward-curving structures (80) are rolled outward by 10°-30°.
9. A four-way valve pipe according to claim 1, characterized in that, It also includes that the outer and inner sides of one end of the connecting pipe one (20) and the connecting pipe two (30) are circumferentially provided with a continuous wave-shaped structure (201), the maximum depth of the wave-shaped structure (201) is 0.1mm, and the wave-shaped structure (201) located on the outer side is located on the outer side of the top of the baffle ring (40).
10. A four-way valve pipe according to any one of claims 1 to 9, characterized in that, It also includes branch tube one (90) and branch tube two (100); The end of the first thin branch pipe (90) is provided with a capillary drainage groove, and the pipe body (10) is provided with an outward flange. The first thin branch pipe (90) is installed inside the outward flange and communicates with the inside of the pipe body (10). The end of the second fine branch pipe (100) is provided with a capillary drainage groove, and the pipe body (10) is provided with an outward flange. The second fine branch pipe (100) is installed inside the outward flange and communicates with the inside of the pipe body (10).