CN101319742B - Pipe connection used for indoor and outdoor units of air conditioner and its method for making production method - Google Patents
Pipe connection used for indoor and outdoor units of air conditioner and its method for making production method Download PDFInfo
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- CN101319742B CN101319742B CN2007101073796A CN200710107379A CN101319742B CN 101319742 B CN101319742 B CN 101319742B CN 2007101073796 A CN2007101073796 A CN 2007101073796A CN 200710107379 A CN200710107379 A CN 200710107379A CN 101319742 B CN101319742 B CN 101319742B
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Abstract
The invention relates to a connection tube applied to the indoor machine and outdoor machine of an air conditioner and a manufacture method thereof. A taper face of weld is arranged at the joint welding position of a copper pipe, and raised grains are arranged on the outer wall of an aluminum pipe. During welding, a mosaic block is arranged at the welding position of the fixed electrode; a groove is arranged in the mosaic block, raised grains are prepared on the groove; and the nominal diameter of the groove which bears raised grains is identical with the outer diameter of the aluminum pipe. The aluminum fluid melted during welding can be filled in the raised grains of the groove of the mosaic block, so that the deformation of the aluminum pipe is avoided, and the quality and strength of the product are improved. By such welding method, the aluminum pipe can be clamped to avoid breaking off; in addition, the outer diameter of the welding position of the copper-aluminum pipe joint is kept identical with the outer diameter of the aluminum pipe.
Description
Technical field
The present invention relates to air-conditioning technical field, say to be exactly the improvement that is used for the adapter of air-conditioning indoor and outdoor machine in more detail.
Background technique
In recent years, the copper valency was constantly raising up, and the copper pipe wall thickness that in refrigeration product, designs is more and more thinner.Along with the exhaustion day by day of global copper ore resource, simple attenuate copper material wall thickness can not be offset skyrocketing of copper valency, and aluminium becomes the problem that refrigeration industry has to face for copper material.Fact proved that two ends are to be the preferred option of the replacement scheme refrigeration industry aluminium of aluminum pipe for copper material in the middle of the copper pipe.
Refrigeration agent is the operation material that in refrigeration plant, carries out refrigeration cycle; As in the circulating pipe system that carries cold medium, refrigeration is relevant with the quantity of refrigeration agent with refrigeration agent, and refrigeration agent recycles in system; The seepage of any trace; All will cause the internal system refrigeration agent to scatter and disappear, and influence the refrigeration of product, finally will make refrigeration product forfeiture refrigeration performance.So the compactness of assurance pipe-line system, especially copper aluminum pipe welded joint is very important.
The related patent U.S. Patent No. technology that is used for the adapter of air-conditioning indoor and outdoor machine; Comprise patent 1: refrigeration system with Cu-Al combination piping and its preparation method; Number of patent application 200510042495.5 has carried out detailed elaboration to the face shaping of the design of the copper aluminum pipe modular construction of pipe joint, copper Al pipe butt welding principle, copper aluminum pipe welded joint; Patent 2: a kind of copper-aluminium combined pipeline for refrigerating system, the patent No. 200510043347.5 has been carried out detailed elaboration to the making method of the welded joint inside diameter plug-in type copper aluminum pipe identical with the aluminum pipe inside diameter.
Find that in actual production when copper-aluminium tube joint was carried out the plug-in type resistance welding, two electrodes of resistance welding machine are clamping copper pipe and aluminum pipe respectively by above-mentioned two kinds of inventions, the electrode of clamping copper pipe drives copper pipe and inserts in the aluminum pipe to be welded.For the external diameter that makes welded joint is identical with the aluminum pipe external diameter, the groove diameter of clamping aluminum pipe need be identical with the aluminum pipe external diameter in the electrode, but just can't clamp aluminum pipe like this, and aluminum pipe comes off easily.In the practice; For guaranteeing that electrode can grasp aluminum pipe, all be more a little bit smaller with the groove minimum diameter design of clamping aluminum pipe in the electrode usually than aluminum pipe external diameter, the external diameter of this part is less than aluminum pipe to be welded after therefore causing welding; Especially when thin wall copper aluminum pipe welds; The groove diameter design of too small clamping aluminum pipe can make the joint internal diameter after the welding become ellipse, and quality standard reduces, and problem is more outstanding.
Summary of the invention
The technical problem that the present invention will solve provides a kind of adapter that is used for the air-conditioning indoor and outdoor machine.
Another technical problem that the present invention will solve provides a kind of preparation method of adapter of adapter of producing said air-conditioning indoor and outdoor machine.
For the adapter that is used for the air-conditioning indoor and outdoor machine of the present invention, the problems referred to above are to solve like this: there is the taper face of weld at the welded joint position of copper pipe, and the outer wall at welded joint place has ripple glaze.
The present invention proposes a kind of new method; Can the splash that produce in the welding process be cured processing, and can enlarge the minimum diameter of pipeline, improve the joint bending resistance, strengthen the fusion area; Promote welding quality, improve the usability that copper aluminium air conditioner indoor and outdoor machine is taken over.The problems referred to above are to solve like this: choose external diameter of pipe identical or close two short copper pipes and an aluminum pipe and carry out preliminary working; The welding part that is about to copper tube end is processed into the taper face of weld that external diameter is slightly smaller than the aluminum pipe internal diameter, a copper pipe and aluminum pipe is separately fixed on float electrode and the fixed electrode again.The welding part of fixed electrode is provided with mosaic block; Mosaic block is with the material of high-fire resistance and low heat transfer efficient; Have groove in the mosaic block, be carved with the waveform lines on the welding part of groove, the nominal diameter of the groove of this band waveform lines is identical with the aluminum pipe external diameter.The pilot pressure welding machine moves copper pipe and inserts in the aluminum pipe; In the grafting process, utilize the taper face of weld of hard copper pipe that the oxide layer on the soft aluminum pipe inwall is ground away, simultaneously to electrifying electrodes, under the effect of resistance heat; Aluminum pipe melts rapidly; The aluminium liquid of fusing is filled out in the ripple glaze of mosaic block groove, thereby can keep the aluminum pipe external diameter of joint not shrink, and after the taper face of weld of copper pipe gets into aluminum pipe fully, breaks off welding power source; Form the copper aluminum pipe welded joint that an outer wall has ripple glaze, the copper Al pipe butt welding of an end is accomplished in outage.Get another root copper pipe then, the same step, the copper Al pipe butt welding of the completion the other end.
The present invention has following beneficial effect:
1, on the groove on the mosaic block waveform lines is arranged, its nominal diameter is identical with aluminum pipe, and minimum diameter is more smaller than aluminum pipe.Owing to increase the waveform lines on the mould, and minimum diameter is more smaller than aluminum pipe external diameter, therefore can clamp aluminum pipe, make its difficult drop-off, can guarantee that the external diameter of copper-aluminium tube joint welding part is identical with aluminum pipe simultaneously;
The aluminium liquid of fusing can be filled in the waveform lines of mosaic block groove when 2, welding, and does not make the aluminum pipe distortion, improves the quality and the intensity of product.
When welding, in copper pipe, insert a welding plug, the adapter that can produce the air-conditioning indoor and outdoor machine of no eutectic structure in advance.Fixed electrode, mosaic block overflow from outside limits aluminium liquid in welding process, form external pressure; Welding plug opposing copper pipe distortion in the copper pipe; Exert pressure to the copper and aluminium welding seam internally, form internal pressure, under multidirectional high pressure effect; The copper aluminium eutectic structure that forms behind the high temperature is extruded from welded seam area fully; Form direct chemical bond between copper pipe taper face of weld and the aluminum pipe inwall and be connected, do not have eutectic structure in the weld seam, thereby can improve welding quality greatly.The mentioned eutectic structure of this specification is meant the eutectic alloy that copper aluminum metallization compound and aluminium form under the high temperature.Simultaneously, the welding plug can improve Al pipe butt welding place internal surface operating mode in the drive-in step of welding incipient stage, like cleaning oxide, raising aluminum pipe circularity; The restriction splash overflows in the energising welding process; After welding, extract out rapidly, can the spatter thing be taken out of, with copper pipe taper face of weld the most carefully locate flattening-out (enlarging), and can be with there being rosin joint copper-aluminium joint product to draw back, Automatic sieve is selected substandard product.Thereby can improve the Cu-Al connecting pipe of air-conditioning indoor and outdoor machine greatly and great Accident due to quality not take place at the bending resistance at welded joint place, the flow at welded joint place, the product of guaranteeing to dispatch from the factory.
In order to increase the service life, can to carry out copper plating treatment on the surface of the adapter of air conditioner indoor and outdoor machine, thereby improve the anti-corrosion capability of aluminum pipe and weld seam.
Mosaic block can use high-hardness titanium alloy to make, and improves welding fusion area and quality.
In order to optimize welding effect, make thinner copper-aluminium combined pipeline be suitable for the adapter of air conditioner indoor and outdoor machine, the welding conical surface of above-mentioned copper pipe can be made polyline shaped.Described broken line diameter should be slightly larger than the aluminum pipe internal diameter.Adopt the polyline shaped face of weld, not only reduced the resistance when when welding thin-walled copper, aluminum pipe, inserting copper pipe, help preventing the copper pipe deformation instability, and formed two sections fusion weld seams, improve welding fusion area and quality.
Description of drawings
The welding schematic representation of the adapter of Fig. 1 air conditioner indoor and outdoor machine.
The local enlarged diagram of Fig. 2 mosaic block groove
The structure of the adapter of Fig. 3 air conditioner indoor and outdoor machine
Fig. 4 has the copper pipe of polyline shaped conical surface
Description of symbols among the figure:
Embodiment
Specific embodiment 1:
With reference to Fig. 1, to choose the identical copper pipe of external diameter of pipe 2 and carry out preliminary working with aluminum pipe 12, the welding part that is about to copper tube end is processed into welding conical surface 6.Put into a root bead in advance in the inside of copper pipe 2 and connect plug 1, and the external form of welding plug 1 and the taper face of weld of copper pipe 2 are matched, the traveling electrode 3 that copper pipe 2 places internal pressure type resistor pressure welding machine to incite somebody to action is middle; Aluminum pipe 12 ports need not processed, and keep wall thickness and diameter original state, and aluminum pipe places on internal pressure type resistor pressure welding machine general's the fixed electrode 5, on the groove of mosaic block 4, mill in advance to process wave lines 7.As shown in Figure 3, the nominal diameter D2 of groove is identical with the aluminum pipe external diameter, and the minimum diameter D1 of groove is slightly less than the aluminum pipe external diameter, and maximum dimension D 3 is slightly larger than the aluminum pipe external diameter.
Through internal pressure type resistor pressure welding machine the copper pipe on traveling electrode 3 and the electrode thereof 2 is moved in the insertion aluminum pipe 12.Hard copper pipe 2 welding conical surfaces 3 are ground away the oxide layer on soft aluminum pipe 12 inwalls; To traveling electrode 3, fixed electrode 5 energisings, under the effect of resistance heat, aluminum pipe 12 melts rapidly simultaneously; The aluminium liquid of fusing is filled out in the waveform lines 7 of fixed electrode 5; Because the effect of welding plug 1 keeps the external diameter of aluminum pipe 12 not shrink,, the taper face of weld of copper pipe 2 breaks off welding power source after entering into aluminum pipe 12 fully, promptly accomplish the copper Al pipe butt welding of an end.Accomplish the copper Al pipe butt welding of the other end then like method.Accomplish the preparation that the air-conditioning indoor and outdoor machine is taken over.
Specific embodiment 2:
With reference to Fig. 4; The welding conical surface 6 of above-mentioned copper pipe 2 also can be polyline shaped face of weld 10; The diameter d at broken line place should be slightly larger than aluminum pipe 12 internal diameters, can reduce the resistance when when welding thin-walled copper, aluminum pipe, inserting copper pipe, helps preventing the copper pipe deformation instability; And formed two sections fusion weld seams, and improve welding fusion area and quality.
By the adapter of the air-conditioning indoor and outdoor machine of method for preparing, the aluminum tube surfaces at welded joint place has the waveform concave convex texture, is called for short ripple glaze.
The present invention describes with reference to accompanying drawing and embodiment, but protection domain is not limited thereto, and in technical scope of the present invention, has those of ordinary skill and can pass through simple conversion, and obtain the same technique effect of the present invention, equally in protection scope of the present invention.
Claims (10)
1. be used for the adapter of air-conditioning indoor and outdoor machine, be made up of aluminum pipe and the copper pipe that is welded on the aluminum pipe two ends, it is characterized in that there is the taper face of weld at the welded joint position of copper pipe, the aluminum pipe outer wall at welded joint place has ripple glaze.
2. the adapter that is used for the air-conditioning indoor and outdoor machine as claimed in claim 1 is characterized in that said taper face of weld is a polyline shaped.
3. according to claim 1 or claim 2 the adapter that is used for the air-conditioning indoor and outdoor machine is characterized in that forming direct chemical bond between said taper face of weld and the aluminum pipe inwall is connected, and joint welding has the characteristic of no copper aluminium eutectic structure.
4. according to claim 1 or claim 2 the adapter that is used for the air-conditioning indoor and outdoor machine is characterized in that in the outside of aluminum pipe and joint copper layer being arranged.
5. the making method that is used for the adapter of air-conditioning indoor and outdoor machine as claimed in claim 1 is characterized in that getting external diameter of pipe identical two copper pipes and an aluminum pipe, and the welding part of copper tube end is processed into the taper face of weld; A copper pipe and aluminum pipe are separately fixed in the middle of float electrode and the fixed electrode, the welding part of fixed electrode is provided with mosaic block again, and mosaic block is with the material of high-fire resistance and low heat transfer efficient; Have groove in the mosaic block, be carved with ripple glaze on the groove, the nominal diameter of the groove of this band ripple glaze is identical with the aluminum pipe external diameter; When the pilot pressure welding machine makes copper pipe move in the insertion aluminum pipe, simultaneously to electrifying electrodes, under the effect of resistance heat; Aluminum pipe melts rapidly; Aluminium liquid is filled out in the mosaic block groove waveform lines, gets into aluminum pipe fully until the taper face of weld of copper pipe, outage; Get another root copper pipe then, adopt said method to be welded to the other end of aluminum pipe.
6. the making method that is used for the adapter of air-conditioning indoor and outdoor machine as claimed in claim 5 is put into a root bead in advance in the inside of copper pipe before it is characterized in that welding and is connect plug, and the profile of welding plug and the taper face of weld of copper pipe match.
7. like claim 5 or the 6 described making methods that are used for the adapter of air-conditioning indoor and outdoor machine, it is characterized in that described mosaic block made by high-hardness titanium alloy.
8. the making method that is used for the adapter of air-conditioning indoor and outdoor machine as claimed in claim 7 is characterized in that said taper face of weld is the polyline shaped face of weld.
9. like claim 5,6,8 arbitrary described making methods that are used for the adapter of air-conditioning indoor and outdoor machine, it is characterized in that outside copper facing at said aluminum pipe and welded joint.
10. the making method that is used for the adapter of air-conditioning indoor and outdoor machine as claimed in claim 7 is characterized in that the outside copper facing at said aluminum pipe and welded joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101073796A CN101319742B (en) | 2007-06-04 | 2007-06-04 | Pipe connection used for indoor and outdoor units of air conditioner and its method for making production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101073796A CN101319742B (en) | 2007-06-04 | 2007-06-04 | Pipe connection used for indoor and outdoor units of air conditioner and its method for making production method |
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| Publication Number | Publication Date |
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| CN101319742A CN101319742A (en) | 2008-12-10 |
| CN101319742B true CN101319742B (en) | 2012-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101073796A Active CN101319742B (en) | 2007-06-04 | 2007-06-04 | Pipe connection used for indoor and outdoor units of air conditioner and its method for making production method |
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| CN (1) | CN101319742B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962698A (en) * | 2014-05-07 | 2014-08-06 | 嵊州市新高轮制冷设备有限公司 | Tool and method for welding copper pipe and aluminum pipe |
| CN103962697A (en) * | 2014-05-07 | 2014-08-06 | 嵊州市新高轮制冷设备有限公司 | Tool and method for welding copper pipe and iron pipe |
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|---|---|---|---|---|
| DE102010005873B4 (en) * | 2010-01-27 | 2012-06-06 | Magna Powertrain Ag & Co. Kg | Method for connecting a shaft and a hub and arrangement of shaft and hub |
| CN102528255A (en) * | 2010-12-31 | 2012-07-04 | 左铁军 | V-shaped face copper and aluminium welding processing technique and welding connector used for power cables |
| KR101788519B1 (en) * | 2014-08-18 | 2017-10-19 | 오리진 일렉트릭 캄파니 리미티드 | Metal joined body and method for manufacturing metal joined body |
| CN107781541B (en) * | 2016-08-24 | 2019-12-03 | 浙江三花智能控制股份有限公司 | A kind of tube assembly |
| CN107795524B (en) * | 2017-11-24 | 2023-06-30 | 湖州三井低温设备有限公司 | Liquid outlet connecting pipe structure of low-temperature immersed pump and production method thereof |
| CN110735974B (en) * | 2018-07-20 | 2022-06-21 | 新昌县四通机电有限公司 | Pipe fitting connecting structure, manufacturing method thereof, liquid storage device and refrigerating system |
| CN109277685A (en) * | 2018-11-20 | 2019-01-29 | 上海理工大学 | A kind of different metal materials pipeline welding device |
| CN109869548A (en) * | 2019-04-03 | 2019-06-11 | 广东西南石化装备有限公司 | A kind of flue sealed connecting component |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962698A (en) * | 2014-05-07 | 2014-08-06 | 嵊州市新高轮制冷设备有限公司 | Tool and method for welding copper pipe and aluminum pipe |
| CN103962697A (en) * | 2014-05-07 | 2014-08-06 | 嵊州市新高轮制冷设备有限公司 | Tool and method for welding copper pipe and iron pipe |
| CN103962697B (en) * | 2014-05-07 | 2015-07-08 | 嵊州市新高轮制冷设备有限公司 | Tool for welding copper pipe and iron pipe |
| CN103962698B (en) * | 2014-05-07 | 2015-12-02 | 嵊州市新高轮制冷设备有限公司 | The welding tooling of a kind of copper pipe and aluminum pipe |
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| Publication number | Publication date |
|---|---|
| CN101319742A (en) | 2008-12-10 |
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Owner name: QINGDAO JINHAI REFRIGERATION PIPE INDUSTRY CO., LT Free format text: FORMER OWNER: ZUO TIEJUN Effective date: 20110322 Free format text: FORMER OWNER: ZHAO YUE |
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Inventor after: Zhao Yue Inventor after: Wan Yanyao Inventor after: Dai Fabin Inventor before: Zuo Tiejun Inventor before: Zhao Yue Inventor before: Sun Dexing Inventor before: Yang Xun |
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Free format text: CORRECT: INVENTOR; FROM: ZUO TIEJUN ZHAO YUE SUN DEXING YANG XUN TO: ZHAO YUE WAN YANYAO DAI FABIN |
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Effective date of registration: 20110322 Address after: North Mengzhuang road 266021 Shandong city of Qingdao Province, No. 17 Applicant after: Qingdao Jinhai Refrigeration Pipe Industry Co., Ltd. Address before: North Mengzhuang road 266021 Shandong city of Qingdao Province, No. 17 Applicant before: Zuo Tiejun Co-applicant before: Zhao Yue |
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