CN101195186B - Heat exchanger aluminum pipe brazing flame shunting net and method of aluminum pipe brazing by using the shunting net - Google Patents
Heat exchanger aluminum pipe brazing flame shunting net and method of aluminum pipe brazing by using the shunting net Download PDFInfo
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- CN101195186B CN101195186B CN2006101298583A CN200610129858A CN101195186B CN 101195186 B CN101195186 B CN 101195186B CN 2006101298583 A CN2006101298583 A CN 2006101298583A CN 200610129858 A CN200610129858 A CN 200610129858A CN 101195186 B CN101195186 B CN 101195186B
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Abstract
The invention relates to a heating exchanger aluminum tube soldering flame shunt network which is a net-shaped structure, the net-shaped structure is processed by austenitic heat resistant steel. The invention comprises two net sleeves whose structure forms are cuboids and two rectangle heat conducting nets which are arranged correspondingly. The two net sleeves are provided with embodied grooves, and the grooves are opened on the bottom middle portion of the net sleeves. Two heat conducting nets are respectively arranged on two sides of a U-shaped tube which is watched from heating exchangerfin arrays. A method for soldering connectors of aluminum tubes which adopts the heating exchanger aluminum tube soldering flame shunt network comprises connecting mutually the aluminum tubes, arranging shunt networks, and soldering with flames. The shunt networks is used to shunt solder flames into tiny and even heat resources, solder and the aluminum tubes are heated indirectly, the probability of over-welding can be lowered greatly, the finishing product rate can be increased, and the manufacturing cost of the products can be lowered.
Description
Technical field
The present invention relates to the heat exchanger of air-conditioner, especially relate to the servicing unit of heat exchanger aluminum pipe joint soldering.
Background technology
Heat exchanger is the direct refrigeration device of air-conditioner refrigerating system, and plate-like U-shaped pipe, fin and the end plate good by thermal conductivity constitute.The U-shaped pipe vertically passes the fins set that many fins are arranged in parallel and form, and end plate is arranged on the two ends of fins set, is used for and being connected of extraneous parts.In general, the U-shaped pipe is made by copper tube, and fin is thin fine aluminium sheet, and end plate is made of corrosion resistant plate.
During air-conditioner work, there is refrigerant under the compressor effect, to cycle through in the copper pipe, the low-temp low-pressure liquid refrigerants in copper pipe, evaporate and by fin from every side the heat absorption, circulate the as mentioned above exchange heat of carrying out of perhaps HTHP gaseous coolant condensation and by fin heat release towards periphery in copper pipe, heat exchanger has realized the refrigerating/heating operation of air-conditioner.
The performance of heat exchanger directly influences the refrigerating/heating performance of air-conditioner, and heat exchanger volume and weight are all occupied larger proportion in the air-conditioner overall structure, and therefore, the making of heat exchanger and quality thereof all have material impact to whole household air-conditioner and cost.
During the heat exchanger of prior art is made, at first, a plurality of fins that are arranged in parallel are fixed the rectangular-shaped fins set of formation, and insert end plate respectively at the two ends up and down of fins set; Insert a row bottom U-shaped pipe again from the lower end of fins set, the straight tube of bottom U-shaped pipe inserts in the fin, and the bend pipe of bottom U-shaped pipe is exposed at the lower end of fins set; Then from the upper end of fins set, the bend pipe of one row top U-shaped pipe is inserted respectively in the straight tube of bottom U-shaped pipe, two bend pipes of a top U-shaped pipe insert respectively in two adjacent straight tubes of two bottom U-shaped pipes, and the bend pipe of top U-shaped pipe is exposed at the upper end of fins set.The straight tube of the bend pipe of top U-shaped pipe and bottom U-shaped pipe is connected as one by gas brazing.
The gas brazing connection procedure of top U-shaped pipe and bottom U-shaped pipe: the outer rim that earlier circular solder is enclosed within U-shaped interface tube place, top, the thickness of solder is poor less than the radius at U-shaped interface tube place, bottom and U-shaped interface tube place, top, U-shaped interface tube place, top is put into U-shaped interface tube place, bottom together with solder, then gas brazing, then top U-shaped pipe and bottom U-shaped pipe connect as one.The technical difficulty of soldering own is big, and the cooperation in the inside and outside footpath of U-shaped pipe, and the grasp of brazing temperature and time all have very high requirement.
Because the price of copper is too expensive at present, new technology often adopts aluminium to replace copper.After heat exchanger of air conditioner adopted aluminum pipe to replace copper pipe, cost can reduce greatly, and still, in the brazing process that aluminum pipe heat exchanger is made, brazing temperature is difficult to control.Because the fusing point of aluminium is lower, aluminum pipe is easy to burn in the gas brazing process, causes the damage that can't repair, greatly reduces yield rate, therefore, the soldering problem of aluminium tube joint becomes needs one of better important technological problems that solves in heat exchanger manufacturing and even the whole air-conditioner production.
Summary of the invention
The problem that exists at the heat exchanger aluminum pipe joint soldering of above-mentioned prior art, the present invention releases a kind of soldering servicing unit of heat exchanger aluminum pipe brazing flame shunting net, network structure by heat-resisting steel becomes brazing flame shunting the thermal source of tiny equalization solder and aluminum pipe are heated, and reduces the probability of aluminum pipe burn-through.Simultaneously, also provided the method for in aluminum pipe brazing, using above-mentioned heat exchanger aluminum pipe brazing flame shunting net.
Heat exchanger aluminum pipe brazing flame shunting net involved in the present invention is the network structure that austenitic heat-resistance steel is processed into, and is arranged on an end of the U-shaped aluminum pipe that the heat exchanger fin group exposes, and the U-shaped aluminum pipe that fins set is exposed places in the network structure fully.The network structure of shunting net can have two kinds of versions: a kind of is the net of cuboid, and net has the groove that caves in, and groove is in net bottom surface intermediate openings, and net is arranged on an end of the U-shaped aluminum pipe that fins set exposes, and the U-shaped aluminum pipe places in the groove fully; Another kind is two rectangle thermal conductive networks that are oppositely arranged, and thermal conductive network is arranged on an end of the U-shaped aluminum pipe that fins set exposes, and two thermal conductive networks are separately positioned on the U-shaped aluminum pipe both sides that the heat exchanger fin group is exposed, and U-shaped aluminum pipe is therebetween blocked fully.
The method that heat exchanger aluminum pipe brazing flame shunting net involved in the present invention carries out the aluminium tube joint soldering comprises: the aluminum pipe butt joint, the straight sections of bottom U-shaped aluminum pipe is inserted the fin from the lower end of fins set, and the top U-shaped aluminum pipe that again the interface outer rim is with circular solder is from the straight tube interface of the upper side insertion bottom U-shaped aluminum pipe of fins set; Place shunting net, the net or the thermal conductive network of heat exchanger aluminum pipe brazing flame shunting net is put in the end that the heat exchanger fin group is exposed the U-shaped aluminum pipe; Gas brazing, with the net or the thermal conductive network of brazing flame torch firing shunting net, shunting net is shunted brazing flame, forms the thermal source of tiny impartial heat, solder and aluminum pipe are heated, and then top U-shaped aluminum pipe and bottom U-shaped aluminum pipe are connected as one by gas brazing.
Heat exchanger aluminum pipe brazing flame shunting net involved in the present invention is the network structure that austenitic heat-resistance steel is processed into, can bear the heating of 650 ℃～680 ℃ of following brazing flames for a long time, and brazing flame shunted, form the thermal source of tiny impartial heat, solder and aluminum pipe are carried out indirect heating, greatly reduce the probability of aluminum pipe burn-through, improved yield rate, reduced the manufacturing cost of product.
Description of drawings
Fig. 1 is a prior art heat exchanger aluminum pipe joint gas brazing schematic diagram.
Fig. 2 is the thermal conductive network structural representation of the heat exchanger aluminum pipe brazing flame shunting net that the present invention relates to.
Fig. 3 is that the net of the heat exchanger aluminum pipe brazing flame shunting net that the present invention relates to is arranged on the schematic diagram on the heat exchanger fin group.
Fig. 4 is the flow chart that the application heat exchanger aluminum pipe brazing flame shunting net that the present invention relates to carries out the aluminium tube joint method for welding.
Description of symbols in the accompanying drawing:
1: fins set 2: bottom U-shaped aluminum pipe bend pipe
3: top U-shaped aluminum pipe bend pipe 4: bottom U-shaped aluminum pipe straight tube
5: bottom U-shaped aluminum pipe interface 6: solder
7: top U-shaped aluminum pipe interface 8: welding gun
9: thermal conductive network 10: net
The specific embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
Fig. 2 shows the thermal conductive network structural representation of the heat exchanger aluminum pipe brazing flame shunting net that the present invention relates to.
Fig. 3 shows the be provided with situation of net on the heat exchanger fin group of the heat exchanger aluminum pipe brazing flame shunting net that the present invention relates to.
Heat exchanger aluminum pipe brazing flame shunting net involved in the present invention is the network structure that austenitic heat-resistance steel is processed into, the network structure of shunting net can have two kinds of versions: a kind of is the net 10 of cuboid, and the U-shaped aluminum pipe that net 10 exposes fins set 1 is placed in the net of bottom surface intermediate openings fully; Another kind is two rectangle thermal conductive networks 9 that are oppositely arranged, and thermal conductive network 9 is arranged on an end of the U-shaped aluminum pipe that fins set exposes, and two thermal conductive networks are separately positioned on the U-shaped aluminum pipe both sides that the heat exchanger fin group is exposed, and U-shaped aluminum pipe is therebetween blocked fully.
Fig. 4 is the flow chart that the application heat exchanger aluminum pipe brazing flame shunting net that the present invention relates to carries out the aluminium tube joint method for welding.
As shown in Figure 4, the method that heat exchanger aluminum pipe brazing flame shunting net involved in the present invention carries out the aluminium tube joint soldering comprises: aluminum pipe butt joint S1, the straight sections of bottom U-shaped aluminum pipe is inserted the fin from the lower end of fins set, and the top U-shaped aluminum pipe that again the interface outer rim is with circular solder is from the straight tube interface of the upper side insertion bottom U-shaped aluminum pipe of fins set; Place shunting net S2, the net or the thermal conductive network of heat exchanger aluminum pipe brazing flame shunting net is put in the end that the heat exchanger fin group is exposed the U-shaped aluminum pipe; Gas brazing S3, with the net or the thermal conductive network of brazing flame torch firing shunting net, shunting net is shunted brazing flame, forms the thermal source of tiny impartial heat, solder and aluminum pipe are heated, and then top U-shaped aluminum pipe and bottom U-shaped aluminum pipe are connected as one by gas brazing.
In above-mentioned placement shunting net S2, when being the net of cuboid, net is arranged on the end that fins set is exposed the U-shaped aluminum pipe as the network structure of shunting net, the U-shaped aluminum pipe places in the net of bottom surface intermediate openings fully; When being two rectangle thermal conductive networks that are oppositely arranged as the network structure of shunting net, two thermal conductive networks are separately positioned on the U-shaped aluminum pipe both sides that the heat exchanger fin group is exposed, and two thermal conductive networks block U-shaped aluminum pipe therebetween fully.
Claims (6)
1. a heat exchanger aluminum pipe brazing flame shunting net is characterized in that, is the network structure that austenitic heat-resistance steel is processed into, and is arranged on the end that heat exchanger comprises the U-shaped aluminum pipe that fins set is exposed, and the U-shaped aluminum pipe that fins set is exposed places in the network structure fully.
2. a kind of heat exchanger aluminum pipe brazing flame shunting net according to claim 1 is characterized in that, network structure is the net of cuboid, and net has the groove that caves in, and groove is in net bottom surface intermediate openings.
3. a kind of heat exchanger aluminum pipe brazing flame shunting net according to claim 1 is characterized in that, network structure is two rectangle thermal conductive networks that are oppositely arranged.
4. the application rights method that requires 1 described a kind of heat exchanger aluminum pipe brazing flame shunting net to carry out the aluminium tube joint soldering comprises: aluminum pipe butt joint (S1), the straight sections of bottom U-shaped aluminum pipe is inserted the fin from the lower end of fins set, and the top U-shaped aluminum pipe that again the interface outer rim is with circular solder is from the straight tube interface of the upper side insertion bottom U-shaped aluminum pipe of fins set; Place shunting net (S2), heat exchanger aluminum pipe brazing flame shunting net is put in the end that the heat exchanger fin group is exposed the U-shaped aluminum pipe; Gas brazing (S3), with brazing flame torch firing shunting net, shunting net is shunted brazing flame, forms the thermal source of tiny impartial heat, and solder and aluminum pipe are heated, and then top U-shaped aluminum pipe and bottom U-shaped aluminum pipe are connected as one by gas brazing.
5. application heat exchanger aluminum pipe brazing flame shunting net according to claim 4 carries out the method for aluminium tube joint soldering, it is characterized in that, in placing shunting net (S2), the network structure of shunting net is the net of cuboid, net is arranged on an end of the U-shaped aluminum pipe that fins set exposes, and the U-shaped aluminum pipe places in the net of bottom surface intermediate openings fully.
6. application heat exchanger aluminum pipe brazing flame shunting net according to claim 4 carries out the method for aluminium tube joint soldering, it is characterized in that, in placing shunting net (S2), the network structure of shunting net is two rectangle thermal conductive networks that are oppositely arranged, two thermal conductive networks are separately positioned on the U-shaped aluminum pipe both sides that the heat exchanger fin group is exposed, and two thermal conductive networks block U-shaped aluminum pipe therebetween fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101298583A CN101195186B (en) | 2006-12-05 | 2006-12-05 | Heat exchanger aluminum pipe brazing flame shunting net and method of aluminum pipe brazing by using the shunting net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101298583A CN101195186B (en) | 2006-12-05 | 2006-12-05 | Heat exchanger aluminum pipe brazing flame shunting net and method of aluminum pipe brazing by using the shunting net |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101195186A CN101195186A (en) | 2008-06-11 |
| CN101195186B true CN101195186B (en) | 2010-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006101298583A Expired - Fee Related CN101195186B (en) | 2006-12-05 | 2006-12-05 | Heat exchanger aluminum pipe brazing flame shunting net and method of aluminum pipe brazing by using the shunting net |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103143852B (en) * | 2011-12-06 | 2016-04-20 | 海信科龙电器股份有限公司 | A kind of soldering connection interface and the method that this interface is welded |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4901908A (en) * | 1987-09-09 | 1990-02-20 | Nippondenso Co., Ltd. | Aluminum material for brazing, method of manufacturing same, and method of manufacturing heat exchanger made of aluminum alloy |
| CN1053119A (en) * | 1991-02-13 | 1991-07-17 | 天津大学 | Metal composite mesh on two surfaces intensify heat transfer pipe and heat transfer plate |
| CN2423559Y (en) * | 2000-06-07 | 2001-03-14 | 姜锡高 | Heat-transfer pipe |
| CN1507379A (en) * | 2001-05-03 | 2004-06-23 | �����ɷ� | Method of brazing thin heat exchanging plates and brazed plate heat exchanger produced according to the method |
| WO2006012961A1 (en) * | 2004-07-30 | 2006-02-09 | Behr Gmbh & Co. Kg | Method for soldering a heat exchanger, and a heat exchanger produced according to this method |
| CN1830609A (en) * | 2005-03-09 | 2006-09-13 | 株式会社电装 | Manufacturing method, brazing apparatus and metal article |
-
2006
- 2006-12-05 CN CN2006101298583A patent/CN101195186B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4901908A (en) * | 1987-09-09 | 1990-02-20 | Nippondenso Co., Ltd. | Aluminum material for brazing, method of manufacturing same, and method of manufacturing heat exchanger made of aluminum alloy |
| CN1053119A (en) * | 1991-02-13 | 1991-07-17 | 天津大学 | Metal composite mesh on two surfaces intensify heat transfer pipe and heat transfer plate |
| CN2423559Y (en) * | 2000-06-07 | 2001-03-14 | 姜锡高 | Heat-transfer pipe |
| CN1507379A (en) * | 2001-05-03 | 2004-06-23 | �����ɷ� | Method of brazing thin heat exchanging plates and brazed plate heat exchanger produced according to the method |
| WO2006012961A1 (en) * | 2004-07-30 | 2006-02-09 | Behr Gmbh & Co. Kg | Method for soldering a heat exchanger, and a heat exchanger produced according to this method |
| CN1830609A (en) * | 2005-03-09 | 2006-09-13 | 株式会社电装 | Manufacturing method, brazing apparatus and metal article |
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| CN101195186A (en) | 2008-06-11 |
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Granted publication date: 20100630 Termination date: 20101205 |