CN112935612A - Can avoid with insufficient joint of penetration when copper pipe is brazed and is connected - Google Patents
Can avoid with insufficient joint of penetration when copper pipe is brazed and is connected Download PDFInfo
- Publication number
- CN112935612A CN112935612A CN202110373382.2A CN202110373382A CN112935612A CN 112935612 A CN112935612 A CN 112935612A CN 202110373382 A CN202110373382 A CN 202110373382A CN 112935612 A CN112935612 A CN 112935612A
- Authority
- CN
- China
- Prior art keywords
- convex edge
- copper pipe
- joint
- connecting cavity
- process notch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010949 copper Substances 0.000 title claims abstract description 40
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 40
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 230000035515 penetration Effects 0.000 title claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000005219 brazing Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000004927 fusion Effects 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
- B23K31/027—Making tubes with soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to a joint capable of avoiding insufficient penetration when in braze welding connection with a copper tube, which comprises a body, wherein the body is in a hollow cylindrical shape, an annular convex edge protruding inwards is arranged on the inner wall of the middle part of the body, and the interior of the body is divided into an upper connecting cavity and a lower connecting cavity; the inner diameter of the upper connecting cavity is matched with the outer diameter of the red copper pipe, so that the end part of the red copper pipe can be inserted into the upper connecting cavity and is abutted against the convex edge; the upper end part of the body is welded with the red copper pipe; the convex edge is concentric with the body; the convex edge is provided with a process notch; the process notch is axially arranged in a through manner, the cross section of the process notch is U-shaped, and the opening is inward along the radial direction. The invention has reasonable design, simple structure and convenient use, can exhaust through the process notch during welding, ensures the smooth flow of solder, effectively solves the problem of insufficient penetration during welding, can improve the welding quality and efficiency, can reduce the cost and fully meets the production requirement.
Description
Technical Field
The invention relates to an air conditioner part, in particular to a joint, and particularly relates to a joint capable of avoiding insufficient fusion depth during brazing connection with a copper tube.
Background
On large-scale central air-conditioning equipment, the copper tube is often required to be welded with joints made of dissimilar materials such as steel joints, brass joints and the like. However, during welding, the phenomenon of insufficient penetration caused by poor solder fluidity is easy to occur, and further, the welding seam is cracked and the refrigerant is leaked, so that the equipment cannot work normally. At present, the method of accumulating solder at the pipe orifice is generally adopted to increase the penetration and improve the welding quality, but the method has the following defects: the appearance quality of the welding seam is poor; the requirement on the welding level of workers is high; the welding quality is unstable; the welding cost is high; and the like.
Therefore, improvements are urgently needed in order to better meet the production requirements.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a joint which can avoid insufficient penetration when in brazing connection with a red copper pipe, can effectively solve the problem of insufficient penetration when in welding, improves the welding quality and efficiency, reduces the cost and improves the benefit.
The technical scheme of the invention is as follows:
a joint capable of avoiding insufficient fusion depth during braze welding connection with a copper pipe comprises a body, wherein the body is in a hollow cylindrical shape, an annular convex edge protruding inwards is arranged on the inner wall of the middle part of the body, and the interior of the body is divided into an upper connection cavity and a lower connection cavity; the inner diameter of the upper connecting cavity is matched with the outer diameter of the red copper pipe, so that the end part of the red copper pipe can be inserted into the upper connecting cavity and is abutted against the convex edge; the upper end part of the body is welded with the red copper pipe; the convex edge is concentric with the body; the convex edge is provided with a process notch; the process notch is axially arranged in a through manner, the cross section of the process notch is U-shaped, and the opening is inward along the radial direction.
Further, the body is made of steel or copper.
Furthermore, the process notches are multiple and are uniformly distributed.
Furthermore, the copper tube is in clearance fit with the body.
Furthermore, the inner diameter of the convex edge is smaller than that of the copper tube.
The invention has the beneficial effects that:
the invention has reasonable design, simple structure and convenient use, can exhaust through the process notch during welding, ensures the smooth flow of solder, effectively solves the problem of insufficient penetration during welding, can improve the welding quality and efficiency, can reduce the cost and fully meets the production requirement.
Drawings
FIG. 1 is a front view of the body;
FIG. 2 is a top view of the body;
FIG. 3 is a sectional view B-B;
fig. 4 is a sectional view of the body welded to the copper tube.
Wherein: 1-body; 2-convex arris; 3-process gap; 4-copper tube.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1 to 4.
A joint capable of avoiding insufficient penetration when being connected with a red copper tube in a brazing mode comprises a body 1. The body 1 may be made of steel or copper, etc.
The body 1 is hollow cylindrical, an inward protruding annular convex edge 2 is arranged on the inner wall of the middle of the body 1, the convex edge 2 is concentric with the body 1, and the interior of the body 1 is divided into an upper connecting cavity and a lower connecting cavity. The upper connecting cavity is connected with the copper tube 4, and the lower connecting cavity is connected with other parts.
The inner diameter of the upper connecting cavity is matched with the outer diameter of the copper tube, and the copper tube 4 is in clearance fit with the body 1. The gap is typically about 0.2mm, which is sufficient for installation. Meanwhile, the inner diameter of the convex edge 2 is smaller than that of the copper tube 4, so that the end part of the copper tube 4 can be fully abutted against the convex edge 2, and the positioning is accurate when the copper tube is installed.
The convex edge 2 is provided with a process notch 3. The process notch 3 is axially arranged in a through mode, the cross section of the process notch is U-shaped, the opening of the process notch is inward in the radial direction, gas in the gap can be discharged through the process notch during welding, and solder can be guaranteed to smoothly flow into the gap. The process notches 3 are multiple and can be selected according to the inner diameter of the body 1, for example, two or four process notches are uniformly distributed, and solder does not need to be accumulated at the welding position after welding.
During welding, the copper tube is inserted into the upper connecting cavity, and the upper end of the body is brazed, so that the body is firmly connected with the copper tube. During welding, the solder begins to flow into the gap between the body and the copper tube under the action of gravity. After the air in the clearance receives the extrusion, discharge through the technology breach, make the inflow that the solder can be smooth and fill up the clearance, ensure firm in connection between body and the copper tubing to, not only effectively eliminated the not enough problem of welding penetration, still can avoid piling up the phenomenon of solder at the body tip, improve product quality, and reduce cost.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (5)
1. A joint capable of avoiding insufficient fusion depth during braze welding connection with a copper pipe comprises a body and is characterized in that the body is hollow and cylindrical, an annular convex edge protruding inwards is arranged on the inner wall of the middle of the body, and the interior of the body is divided into an upper connection cavity and a lower connection cavity; the inner diameter of the upper connecting cavity is matched with the outer diameter of the red copper pipe, so that the end part of the red copper pipe can be inserted into the upper connecting cavity and is abutted against the convex edge; the upper end part of the body is welded with the red copper pipe; the convex edge is concentric with the body; the convex edge is provided with a process notch; the process notch is axially arranged in a through manner, the cross section of the process notch is U-shaped, and the opening is inward along the radial direction.
2. A joint of claim 1 wherein said body is made of steel or copper to avoid insufficient penetration during a braze joint to a copper tubing.
3. A joint of claim 1, wherein said plurality of process openings are evenly spaced to avoid insufficient penetration during brazing of the copper tube.
4. A joint as defined in claim 1, wherein said copper tube is in clearance fit with said body.
5. A joint of claim 1 wherein said ridge has an inner diameter less than the inner diameter of said copper tube to avoid insufficient penetration during brazing of said copper tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110373382.2A CN112935612A (en) | 2021-04-07 | 2021-04-07 | Can avoid with insufficient joint of penetration when copper pipe is brazed and is connected |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110373382.2A CN112935612A (en) | 2021-04-07 | 2021-04-07 | Can avoid with insufficient joint of penetration when copper pipe is brazed and is connected |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112935612A true CN112935612A (en) | 2021-06-11 |
Family
ID=76230831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110373382.2A Pending CN112935612A (en) | 2021-04-07 | 2021-04-07 | Can avoid with insufficient joint of penetration when copper pipe is brazed and is connected |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112935612A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115302050A (en) * | 2022-08-15 | 2022-11-08 | 武昌船舶重工集团有限公司 | Welding method for copper tube and carbon steel joint |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0577886U (en) * | 1992-03-26 | 1993-10-22 | 三菱電機株式会社 | Neo wedge valve mounting board |
| CN2782278Y (en) * | 2004-12-23 | 2006-05-24 | 冯忠臣 | Socket joint improved structure of metal hose and metal joint |
| JP2006167768A (en) * | 2004-12-17 | 2006-06-29 | Komatsu Ltd | Brazing method |
| CN204692044U (en) * | 2015-05-12 | 2015-10-07 | Tcl空调器(中山)有限公司 | Air condition compressor and air conditioner |
| CN110227870A (en) * | 2018-12-26 | 2019-09-13 | 保定来福汽车照明集团有限公司 | A kind of lamp cap weldering mud moulding tooling |
| CN214558433U (en) * | 2021-04-07 | 2021-11-02 | 南京天加环境科技有限公司 | Can avoid with insufficient joint of penetration when copper pipe is brazed and is connected |
-
2021
- 2021-04-07 CN CN202110373382.2A patent/CN112935612A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0577886U (en) * | 1992-03-26 | 1993-10-22 | 三菱電機株式会社 | Neo wedge valve mounting board |
| JP2006167768A (en) * | 2004-12-17 | 2006-06-29 | Komatsu Ltd | Brazing method |
| CN2782278Y (en) * | 2004-12-23 | 2006-05-24 | 冯忠臣 | Socket joint improved structure of metal hose and metal joint |
| CN204692044U (en) * | 2015-05-12 | 2015-10-07 | Tcl空调器(中山)有限公司 | Air condition compressor and air conditioner |
| CN110227870A (en) * | 2018-12-26 | 2019-09-13 | 保定来福汽车照明集团有限公司 | A kind of lamp cap weldering mud moulding tooling |
| CN214558433U (en) * | 2021-04-07 | 2021-11-02 | 南京天加环境科技有限公司 | Can avoid with insufficient joint of penetration when copper pipe is brazed and is connected |
Non-Patent Citations (1)
| Title |
|---|
| 王晓澜等: "《焊接工实用手册》", 31 March 2005, 江西科学技术出版社, pages: 326 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115302050A (en) * | 2022-08-15 | 2022-11-08 | 武昌船舶重工集团有限公司 | Welding method for copper tube and carbon steel joint |
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