CN101025241A - Non-welded copper-aluminium tube for air conditioner and mfg, method - Google Patents
Non-welded copper-aluminium tube for air conditioner and mfg, method Download PDFInfo
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- CN101025241A CN101025241A CN 200710021104 CN200710021104A CN101025241A CN 101025241 A CN101025241 A CN 101025241A CN 200710021104 CN200710021104 CN 200710021104 CN 200710021104 A CN200710021104 A CN 200710021104A CN 101025241 A CN101025241 A CN 101025241A
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Abstract
The invention relates to an air-conditioner nonwelded copper-aluminum tube, characterized in that: it is an integrated aluminum tube, one end of the aluminum tube connected with tube joint is bell-mouthed in shape, the bell-mouthed end is wrapped with a segment of copper tube, and the outer end of the copper tube extends out of the bell-mouthed end and is flanged inward to wrap the inner wall of the bell-mouthed end, the copper tube body is coated on the outer wall in the corresponding segment of the aluminum tube, and it is made by firstly making soft copper sheet into barrel part and then adopting the process of cutting, punching, flanging, and mouth expanding. Because of no welding joint, the invention largely reduces refrigerant leakage probability and besides, solves the problem of copper-aluminum tube oxidative degradation, so as to make it durable, safe and reliable.
Description
Technical field
The invention belongs to non-welding technique applying on air conditioner chamber's inner connection tube, specifically it is a kind of non-welded copper-aluminium tube for air conditioner that processes by cold forming process and preparation method thereof.
Background technique
The air conditioner indoor and outdoor connecting pipe is the pipeline that connects condenser and vaporizer, by its refrigerant conveying, forms thermal cycle.This pipe is used T usually
2The material copper becomes, and can bear elevated pressures, can be crooked corrosion-resistant.But copper pipe price height, each producer repays aluminum pipe on probation one after another and replaces copper pipe, but adopting aluminum pipe thing followed problem is strength deficiency, the easily oxidation of pipe joint root, afterwards in order to address this problem, the method that adopts is that the tube head place still adopts copper pipe, resistance welding (seeing accompanying drawing 9) is adopted in copper pipe and aluminum pipe junction, but this kind pipe exists cost of production height, up-to-standard rate is low, connecting tube in use leaks probability higher, and just can't weld during greater than Ф 22mm when caliber.
Except above-mentioned passing through the welding method production of copper aluminum pipe, also also has a kind of method of attempting with non-welding manner production of copper aluminum pipe, its technology is: put the long thin copper pipe of 0.5-15cm at the tube head place, with mechanical means copper pipe and aluminum pipe are compressed enlarging again (seeing accompanying drawing 10) then.This kind method has solved the some shortcomings of welding method, but produced a new problem, promptly the sealing surface of pipe and pipe joint junction is that copper aluminium is fitted, because the activity of two kinds of metals is different, copper aluminium faying surface place will produce copper aluminium degraded oxidation when the time was long, thereby caused leaking.
Summary of the invention
Purpose of the present invention is exactly at above-mentioned the deficiencies in the prior art, provides a kind of and reduces the freezing medium leakage possibility, solved copper aluminum pipe degraded oxidation, thereby make durable in use, safe and reliable non-welded copper-aluminium tube for air conditioner of product and preparation method thereof.
Purpose of the present invention can realize by following measure:
A kind of non-welded copper-aluminium tube for air conditioner, it is characterized in that it is a whole aluminum pipe 1, its end that links to each other with pipe joint 2 is a bell mouth shape, end at this integral body aluminum pipe 1 bell mouth shape is enclosed with one section copper sheet pipe 3, and the outer end of copper sheet pipe 3 is stretched out the bell mouth shape port of aluminum pipe 1 and is wrapped the bell mouth shape termination inwall of aluminum pipe 1 to in-flanges, and the body of copper sheet pipe 3 is wrapped up in the outer wall that is attached to whole aluminum pipe 1 corresponding section.
Purpose of the present invention can also realize by following measure:
The thickness of described copper sheet pipe 3 is 0.1-2.5mm, and the caliber of whole aluminum pipe 1 is 4-40mm.
The two ends of described whole aluminum pipe 1 are bell mouth shape, and two ends all are enclosed with one section copper sheet pipe 3.
Scribble isolation printing ink on the surface of contact between described copper sheet pipe 3 and the whole aluminum pipe 1, produce copper aluminium degraded oxidation with the faying surface place that prevents them.
Described whole aluminum pipe 1 outer race is equipped with plastic hot Heat-Shrinkable Tubings 4, the inner that the termination of this plastic hot Heat-Shrinkable Tubings 4 will be wrapped in the copper sheet pipe 3 on whole aluminum pipe 1 bell mouth shape one end wraps, to prevent the surface oxidising of whole aluminum pipe 1 better, also can strengthen the intensity of whole aluminum pipe 1 simultaneously.
Above-mentioned non-welded copper-aluminium tube for air conditioner is to process by following process step:
A. the soft copper plate is washed into plectane with mould;
B. by mould above-mentioned plectane is squeezed into barrel-shaped part;
C. above-mentioned barrel-shaped part is passed through the lathe otch;
D. with the barrel-shaped part die punching behind the otch;
E. the barrel-shaped part after the punching is carried out flange and make it to become the inwardly copper sheet pipe 3 of upset of end mouth of pipe periphery;
F. above-mentioned copper sheet pipe 3 is enclosed within the one or both ends of the whole aluminum pipe of tubulose, and the termination of the whole aluminum pipe of tubulose and the copper sheet pipe of wrapping up in 3 thereof is expanded into bell mouth shape together outward by enlarging technology.
Beneficial effect of the present invention:
1, because the price of aluminium is more cheap than copper, and the proportion of aluminium is much smaller, so adopt aluminum pipe will save 3/4 cost through adopting copper pipe.
2, owing to the length at the 0.5-15cm of tube head place adopts the combination of copper aluminium, so just guaranteed that pipe joint root intensity satisfies usage requirement.
3, because there is not welded joint, so reduced the possibility of freezing medium leakage greatly.
4, solve the problem of copper aluminum pipe degraded oxidation, thereby used product durable in use, safe and reliable.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of plectane.
Fig. 3 is for being processed into plectane the structural representation of barrel-shaped part.
Fig. 4 is the structural representation behind the barrel-shaped part otch.
Fig. 5 is the structural representation after the punching.
Fig. 6 is the structural representation behind the copper sheet pipe flange.
Structural representation when Fig. 7 is the copper sheet pipe box to the whole aluminum pipe of straight tube-like.
Fig. 8 is the structural representation after copper sheet pipe and the whole aluminum pipe enlarging.
Fig. 9 is for adopting the structural representation of welded structure copper aluminum pipe.
Figure 10 adopts the enlarging structure for the copper aluminum pipe but structural representation when not carrying out flange.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples:
Shown in 1 figure, the present invention includes a whole aluminum pipe 1, the caliber of whole aluminum pipe 1 is 4-40mm, its end that links to each other with pipe joint 2 is a bell mouth shape, end at this integral body aluminum pipe 1 bell mouth shape can wrap up the preceding paragraph copper sheet pipe 3, the thickness of copper sheet pipe 3 is 0.1-2.5mm, and its outer end is stretched out the bell mouth shape port of aluminum pipe 1 and wrapped the bell mouth shape termination inwall of aluminum pipe 1 to in-flanges, and the body of copper sheet pipe 3 is wrapped up in the outer wall that is attached to corresponding section on the whole aluminum pipe 1.It is that bell mouth shape or two ends are bell mouth shape that described whole aluminum pipe 1 can be arranged to an end as required, the equal section of the being enclosed with copper sheet pipe 3 of its end when two ends are bell mouth shape, and the length of copper sheet pipe is at 0.5-15cm.On the surface of contact between copper sheet pipe 3 and the whole aluminum pipe 1, scribble isolation printing ink, to prevent the degraded oxidation (whole before this aluminum pipe 1 and copper sheet pipe 3 are in advance through anti-oxidant treatment commonly used) between copper pipe 1 and the aluminum pipe 2.Can prevent the oxidation of whole aluminum pipe 1 better, also increase simultaneously the intensity of whole aluminum pipe 1, also overlap in whole aluminum pipe 1 periphery and to load onto plastic hot Heat-Shrinkable Tubings 4, the inner that the termination of this plastic hot Heat-Shrinkable Tubings 4 will be wrapped in the copper sheet pipe 3 on the whole aluminum pipe 1 bell mouth shape termination wraps.
The concrete making method process step of above-mentioned copper aluminum pipe is (the copper aluminum pipe working process with Ф 16 * 1 is example):
A. the soft copper plate is become the plectane (as shown in Figure 2) of the thick Ф 50 of 0.5mm with die stamping;
B. by mould above-mentioned plectane is squeezed into barrel-shaped part (as shown in Figure 3), wherein patrix is 5, and counterdie is 6, and pressing plate is 7, and this is the normal conventional technology;
C. above-mentioned barrel-shaped part is passed through the lathe otch, this also is a routine techniques (as shown in Figure 4);
D. the barrel-shaped part behind the otch is carried out punching with mould, as shown in Figure 5, this step also adopts routine techniques to get final product;
E. the barrel-shaped part after the punching is carried out conventional flanging process and make it to become the inwardly copper sheet pipe 3 (as shown in Figure 6) of upset of end mouth of pipe periphery;
F. above-mentioned copper sheet pipe 3 is enclosed within on the one or both ends that the whole aluminum pipe of tubulose is a straight tube-like integral body aluminum pipe 1 (as shown in Figure 7), flaring machine by routine together expands into bell mouth shape (as shown in Figure 8) with the termination of the whole aluminum pipe 1 of straight tube-like and the copper sheet pipe of wrapping up in 3 thereof outward then, to put gland nut 8 earlier in whole aluminum pipe 1 termination that is enclosed with copper sheet pipe 3 before this, simultaneously adopt the conventional technology of withholding that copper sheet pipe 3 and whole aluminum pipe 1 are fitted closely to the inboard wall of tube body of the whole aluminum pipe 1 that is with copper sheet pipe 3, certainly, coat isolation printing ink on the surface of contact between copper sheet pipe 3 and the whole aluminum pipe 1 before this, this isolates printing ink is that common anti-oxidant printing ink gets final product.
Above-mentioned gland nut 8 internal diameters are offered bigger than plain nut, so that the bell mouth shape termination of whole aluminum pipe 1 and copper aluminum pipe 3 is placed wherein.During use, the bell mouth shape termination of whole aluminum pipe 1 and copper aluminum pipe 3 is resisted against on the splice port of pipe joint 3, screws interface end that gland nut 8 makes the bell mouth shape termination of whole aluminum pipe 1 and copper aluminum pipe 3 and pipe joint 3 and closely be connected and fixed and get final product.
Claims (6)
1, a kind of non-welded copper-aluminium tube for air conditioner, it is characterized in that it is a whole aluminum pipe (1), its end that links to each other with pipe joint (2) is a bell mouth shape, end at this integral body aluminum pipe (1) bell mouth shape is enclosed with one section copper sheet pipe (3), and the outer end of copper sheet pipe (3) is stretched out the bell mouth shape port of aluminum pipe (1) and is wrapped the bell mouth shape termination inwall of aluminum pipe (1) to in-flanges, and the body of copper sheet pipe (3) is wrapped up in the outer wall that is attached to the corresponding section of whole aluminum pipe (1).
2, non-welded copper-aluminium tube for air conditioner according to claim 1, the thickness that it is characterized in that described copper sheet pipe (3) is 0.1-2.5mm, the caliber of whole aluminum pipe (1) is 4-40mm.
3, non-welded copper-aluminium tube for air conditioner according to claim 1 is characterized in that the two ends of described whole aluminum pipe (1) are bell mouth shape, and two ends all are enclosed with one section copper sheet pipe (3).
4,, it is characterized in that scribbling isolation printing ink on the surface of contact between described copper sheet pipe (3) and the whole aluminum pipe (1) according to claim 1 or 3 described non-welded copper-aluminium tube for air conditioner.
5, according to claim 1 or 3 described non-welded copper-aluminium tube for air conditioner, it is characterized in that described whole aluminum pipe (1) outer race is equipped with plastic hot Heat-Shrinkable Tubings (4), the inner that the termination of this plastic hot Heat-Shrinkable Tubings (4) will be wrapped in the copper sheet pipe (3) on whole aluminum pipe (1) bell mouth shape one end wraps.
6, a kind of making method of non-welded copper-aluminium tube for air conditioner is characterized in that it processes by following process step:
A. the soft copper plate is washed into plectane with mould;
B. by mould above-mentioned plectane is squeezed into barrel-shaped part;
C. above-mentioned barrel-shaped part is passed through the lathe otch;
D. with the barrel-shaped part die punching behind the otch;
E. the barrel-shaped part after the punching is carried out flange and make it to become the inwardly copper sheet pipe (3) of upset of end mouth of pipe periphery;
F. above-mentioned copper sheet pipe (3) is enclosed within the one or both ends of the whole aluminum pipe of tubulose, and logical enlarging technology expands into bell mouth shape with the termination of the whole aluminum pipe of tubulose and the copper sheet pipe of wrapping up in (3) thereof outward together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710021104 CN101025241A (en) | 2007-03-28 | 2007-03-28 | Non-welded copper-aluminium tube for air conditioner and mfg, method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710021104 CN101025241A (en) | 2007-03-28 | 2007-03-28 | Non-welded copper-aluminium tube for air conditioner and mfg, method |
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| CN101025241A true CN101025241A (en) | 2007-08-29 |
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| CN 200710021104 Pending CN101025241A (en) | 2007-03-28 | 2007-03-28 | Non-welded copper-aluminium tube for air conditioner and mfg, method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260956B (en) * | 2008-04-03 | 2010-06-09 | 陈锦波 | Non-corrodible steel conical pipe joint production process |
| CN102748544A (en) * | 2012-07-12 | 2012-10-24 | 左铁军 | Copper-aluminum connecting tube and production method |
| CN102878355A (en) * | 2012-10-24 | 2013-01-16 | 珠海格力电器股份有限公司 | Reducing pipeline piece of air conditioning system |
| CN103016862A (en) * | 2012-12-30 | 2013-04-03 | 浙江普利司汽车零部件有限公司 | Non-welded pipeline joint of automobile air conditioner and machining method of non-welded pipeline joint |
| CN103195993A (en) * | 2013-01-07 | 2013-07-10 | 浙江吉利汽车研究院有限公司杭州分公司 | Connection structure of metal hard tubes of engine room |
| WO2014008645A1 (en) * | 2012-07-12 | 2014-01-16 | Zhao Yue | Copper-aluminium connecting pipe structure and manufacturing method |
| CN104226726A (en) * | 2013-06-19 | 2014-12-24 | 新昌县三鼎机械有限公司 | Manufacturing method for pipe connector |
| CN104455762A (en) * | 2014-11-28 | 2015-03-25 | 左铁军 | Combined copper aluminum tube and manufacturing method thereof |
| CN104822469A (en) * | 2012-11-29 | 2015-08-05 | 雷奥两合股份公司 | Method for producing multi-layer pipe line, pipe line, and air-conditioning system having such pipe line |
| CN110220062A (en) * | 2019-04-17 | 2019-09-10 | 余姚市电波机械有限公司 | Pipe fitting connects sealing structure |
-
2007
- 2007-03-28 CN CN 200710021104 patent/CN101025241A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260956B (en) * | 2008-04-03 | 2010-06-09 | 陈锦波 | Non-corrodible steel conical pipe joint production process |
| CN102748544A (en) * | 2012-07-12 | 2012-10-24 | 左铁军 | Copper-aluminum connecting tube and production method |
| WO2014008645A1 (en) * | 2012-07-12 | 2014-01-16 | Zhao Yue | Copper-aluminium connecting pipe structure and manufacturing method |
| CN102748544B (en) * | 2012-07-12 | 2014-11-26 | 左铁军 | Copper-aluminum connecting tube and production method |
| CN102878355A (en) * | 2012-10-24 | 2013-01-16 | 珠海格力电器股份有限公司 | Reducing pipeline piece of air conditioning system |
| CN104822469A (en) * | 2012-11-29 | 2015-08-05 | 雷奥两合股份公司 | Method for producing multi-layer pipe line, pipe line, and air-conditioning system having such pipe line |
| CN104822469B (en) * | 2012-11-29 | 2017-10-10 | 雷奥两合股份公司 | Manufacture method, pipe and the air-conditioning equipment with this pipe of multilayer pipe |
| CN103016862A (en) * | 2012-12-30 | 2013-04-03 | 浙江普利司汽车零部件有限公司 | Non-welded pipeline joint of automobile air conditioner and machining method of non-welded pipeline joint |
| CN103195993A (en) * | 2013-01-07 | 2013-07-10 | 浙江吉利汽车研究院有限公司杭州分公司 | Connection structure of metal hard tubes of engine room |
| CN104226726A (en) * | 2013-06-19 | 2014-12-24 | 新昌县三鼎机械有限公司 | Manufacturing method for pipe connector |
| CN104455762A (en) * | 2014-11-28 | 2015-03-25 | 左铁军 | Combined copper aluminum tube and manufacturing method thereof |
| CN110220062A (en) * | 2019-04-17 | 2019-09-10 | 余姚市电波机械有限公司 | Pipe fitting connects sealing structure |
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