CN102266992A - Flat tube heat exchanger and assembly method thereof - Google Patents
Flat tube heat exchanger and assembly method thereof Download PDFInfo
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- CN102266992A CN102266992A CN2010101931591A CN201010193159A CN102266992A CN 102266992 A CN102266992 A CN 102266992A CN 2010101931591 A CN2010101931591 A CN 2010101931591A CN 201010193159 A CN201010193159 A CN 201010193159A CN 102266992 A CN102266992 A CN 102266992A
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- flat tube
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- assembly method
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Abstract
The invention provides an assembly method of a flat tube heat exchanger. The assembly method comprises the following steps: (1) firstly brazing a collecting tube and a flat tube of the heat exchanger at a high temperature to form a heat exchanger framework; (2) arranging a welding material on the surface of the flat tube of the heat exchanger framework; (3) sequentially and alternately fixing fins in a fixed groove of a fixed station regularly, and arranging the opening end of a U-shaped pipe groove outwards; (4) allowing the fixed station to get close to the heat exchanger framework so that the flat tube is correspondingly inserted into a fin pipe groove until the flat tube enters the bottom of the pipe groove; and (5) placing the assembled heat exchanger in a low-temperature brazing furnace for soft soldering so as to complete connection assembly of the heat exchanger. In the assembly method, firstly the flat tube and the collecting tube are welded into the heat exchanger framework and then the fins are assembled, which can well eliminate interference in combination of soft soldering and hard soldering and prevent soft solder from being refused to affect the heat transfer coefficient during the hard soldering process; and meanwhile the welding difficulty of the flat tube and the collecting tube is reduced, and the product quality is improved.
Description
Technical field
The present invention relates to a kind of flat pipe heat exchanger, particularly a kind of flat pipe heat exchanger and assembly method thereof.
Background technology
When room air conditioner moved at cooling condition, the room air evaporimeter of flowing through made temperature reduce.Simultaneously because the temperature of evaporator surface generally is starkly lower than the dew-point temperature of air, so air is when flowing through evaporator surface, and airborne part moisture will be separated out, thereby forms condensate water at evaporator surface.Condensate water at evaporator surface should in time be drained, if it is more that condensate water is gathered at evaporator surface,, increase the flow resistance of air with the obstruct airflow road, the efficient of evaporimeter will be reduced: water droplet also might take place be blown into indoor situation, cause the off quality of air-conditioner.
Fin-tube heat exchanger is a heat exchanger pattern with the most use in the present refrigerating air conditioning device, and room air conditioner and air-cooled handpiece Water Chilling Units mostly adopt this heat exchanger.This heat exchanger is adding man-hour, is punching on fin, flange, and the height of flange is the spacing between fin, and the annulus that flange forms is enclosed within on the pipe, makes that fin is able to by this annulus and pipe excellent contact be arranged, and improves heat transfer efficiency.
Parallel-flow heat exchanger is the class heat exchanger in the air conditioning for automobiles widespread usage, and in the application of family expenses air-conditioning also more and more widely, because the restriction of structure, such heat exchanger can only be as the condenser of single-cooling type domestic air conditioning.Can exist condensed water to be difficult for the problem of discharging during as evaporimeter.
Fig. 1 is a prior art parallel-flow heat exchanger structural representation.Fig. 2 is the cross sectional view of heat exchanger structure shown in Figure 1.As Fig. 1, shown in Figure 2, the multiple input multiple output type nest plate type heat exchanger structure of prior art, the flat tube 2 that it comprises fin 3 and runs through fin 3, wherein said flat tube is a high frequency aluminium welded tube, in order to guarantee that flat tube 2 has good thermal diffusivity with combining of fin 3, what adopt is that the mode of welding combines both, the upper end of flat tube 2 and inlet header 1 are welded to connect communicatively, the lower end of flat tube 2 and outlet header 4 are welded to connect communicatively, thereby the refrigerant in the inlet header 1 disperses to flow in a plurality of flat tubes 2, be compiled in the outlet header 4 through after the heat exchange, facilitate heat exchanger like this and be connected with exterior line.
In the prior art, when assembling, fold fin earlier, perpendicular again insertion flat tube assembles; It is bigger that flat tube inserts stroke from the low side of fin to the top, bigger to the flange influence of fin, causes the spacing of fin to be difficult to determine, and then can have a negative impact to fitting between fin and the flat tube, reduces the radiating efficiency of heat exchanger;
And in assembling process, be welded as solder between flat tube and the fin, be welded as solder brazing between flat tube and the collector, after finishing solder, carry out solder brazing again, be easy to influence the quality of solder, cause fin fixing unstable, and then influence heat radiation and air resistance coefficient.
Summary of the invention
Technical problem to be solved by this invention is the shortcoming that overcomes prior art, and a kind of assembly technology of heat exchanger is provided, and it can guarantee the solder quality, improves heat exchanger performance.
The technical solution adopted in the present invention is:
A kind of assembly method of flat pipe heat exchanger may further comprise the steps: 1) carry out high temperature brazing earlier, heat exchanger header and flat tube soldering are constituted the heat exchanger skeleton together; 2) on the flat tube surface of described radiator skeleton wlding is set; 3) alignedly that fin (23) is also fixing at interval successively in fixed station (30) holddown groove (31), and the openend of " U " shape pipe-line tank is outside; 4) near the heat exchanger skeleton flat tube is inserted in the fin pipe-line tank accordingly fixed station (30), enter the pipe-line tank bottom until flat tube; 5) heat exchanger that combines is placed on carries out solder in the low temperature brazing stove, finish being linked and packed of heat exchanger.
In step 3 and step 4, respectively fin is fixed in two fixed stations, the holddown groove of described fixed station is set to design heat exchanger fin twice at interval, the fins set of two fixed stations is inserted alternately from described skeleton both sides and is advanced impel two parts fin and skeleton group to combine.
Described wlding set-up mode is dipping, smears.
Described wlding is a hot melt film, and set-up mode is for pasting.
A kind of employing is the flat pipe heat exchanger of assembly method assembling according to claim 1.
The invention has the beneficial effects as follows: assembly method of the present invention is welded into flat tube and collector the skeleton of heat exchanger earlier, and then installation fin, it can solve the interference that occurs in the combination of solder and solder brazing, when having avoided solder brazing, the solder scolder melts again, influences the coefficient of heat transfer; Simultaneously, reduce the welding difficulty of flat tube and collector, improved product quality.
Description of drawings
Fig. 1 is the heat exchanger structure schematic diagram of prior art air-conditioning;
Fig. 2 is the cross sectional view of heat exchanger structure shown in Figure 1;
Fig. 3 is a fin structure schematic diagram of the present invention;
Fig. 4 is a heat exchanger skeleton schematic diagram of the present invention;
Fig. 5 is a fin fixed form schematic diagram of the present invention;
Fig. 6 is a heat exchanger overall structure schematic diagram of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
As shown in Figure 3, fin 23 is the rectangular aluminum thin slice, offers the punching 233 of many groups on it evenly and at intervals, and described punching 233 is offered along the rectangular fin length direction, and described punching 233 helps air-flow and circulates within it to strengthen the radiating effect of radiator.Between two groups of punchings 233, offer " U " shape pipe-line tank 231, the opening of described pipe-line tank 231 all is arranged on the same side of fin 23, wherein, the width of pipe-line tank 231 is a bit larger tham the thickness of the flat tube 22 that will be described below, generally than the big 1-10mm of thickness of flat tube 22, promptly flat tube 22 can successfully enter in the pipe-line tank 231.
Further, the openend of described pipe-line tank is formed with chamfering structure, so that the insertion of flat tube 22.
Further, be provided with flange around the described pipe-line tank 231, to limit the distance of 23 of two adjacent fins.
Flat tube 22 of the present invention is hollow flat tube or micro-channel flat, be generally aluminium matter flat tube, described micro-channel flat is for being provided with a plurality of demarcation strips in its tube chamber, demarcation strip is divided into several not connected microchannels equably along the duct orientation extension of flat tube and with tube chamber.The cross section of flat tube 22 is the structure that is complementary with pipe-line tank 231.
Wherein, flat tube and described " U " shape pipe-line tank shape, size are complementary, and promptly when flat tube inserted in it fully, flat tube 22 contacted closely with pipe-line tank 231.
Below the assemble method of heat exchanger of the present invention will be described simply:
At first, carry out high temperature brazing (being solder brazing) earlier, together with heat exchanger header 10,40 and flat tube 20 solderings; Constitute heat exchanger skeleton as shown in Figure 4;
Second step, flat tube 20 surfaces at described radiator skeleton are provided with wlding, described solderable material comprises tin-lead solder, cadmium brazing silver alloy, plumbous silver solder and zinc-silver solder etc., wlding is set to liquid or Powdered, by dipping, mode such as smear wlding is arranged on the flat tube outer surface, described wlding also can be hot melt film, hot melt film is pasted at the flat tube outer surface get final product;
In the 3rd step, successively alignedly at interval and fixing, and show that the openend of " U " shape pipe-line tank of fin is all outside in the holddown groove 31 on fixed station 30, as shown in Figure 5 with fin 23;
The 4th step, with the fins set that fixed near the heat exchanger skeleton, the time flat tube pipe-line tank that inserts accordingly in, and be pushed into the penetralia of pipe-line tank 231;
The 5th goes on foot, and the heat exchanger that combines is placed on carries out solder in the low temperature brazing stove, finishes being linked and packed of heat exchanger.
Wherein, preferably, in above-mentioned steps 3 and step 4, respectively fin is fixed in two fixed stations, the holddown groove of described fixed station is set to design heat exchanger fin twice at interval, in assembling process, the fins set of two fixed stations is inserted alternately from described skeleton both sides, impel two parts fin and skeleton group to combine near also advancing accordingly two fixed stations with even thrust then, this mode has increased the distance of two fins between fixed station, conveniently laying fin, and fin inserts from both sides respectively, can effectively reduce the stroke of flat tube in the fin pipe-line tank, avoid fin generation deformation to help the maintenance of flat tube surface wlding simultaneously.
In sum, assembly method of the present invention is welded into the skeleton of heat exchanger with flat tube and collector earlier, and then fin is installed, it can solve the interference that occurs in the combination of solder and solder brazing, when having avoided solder brazing, the solder scolder melts again, influences the coefficient of heat transfer; Simultaneously, reduce the welding difficulty of flat tube and collector, improved product quality.
The above only is a preferred implementation of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications; as adopting other low temperature methods of attachment to connect heat exchanger, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. the assembly method of a flat pipe heat exchanger is characterized in that, may further comprise the steps:
1) carries out high temperature brazing earlier, heat exchanger header and flat tube soldering are constituted the heat exchanger skeleton together;
2) on the flat tube surface of described radiator skeleton wlding is set;
3) alignedly that fin (23) is also fixing at interval successively in fixed station (30) holddown groove (31), and the openend of " U " shape pipe-line tank is outside;
4) near the heat exchanger skeleton flat tube is inserted in the fin pipe-line tank accordingly fixed station (30), enter the pipe-line tank bottom until flat tube;
5) heat exchanger that combines is placed on carries out solder in the low temperature brazing stove, finish being linked and packed of heat exchanger.
2. the assembly method of flat pipe heat exchanger as claimed in claim 1, it is characterized in that: in step 3 and step 4, respectively fin is fixed in two fixed stations, the holddown groove of described fixed station is set to design heat exchanger fin twice at interval, the fins set of two fixed stations is inserted alternately from described skeleton both sides and is advanced impel two parts fin and skeleton group to combine.
3. the assembly method of flat pipe heat exchanger as claimed in claim 1, it is characterized in that: described wlding set-up mode is dipping, smears.
4. the assembly method of flat pipe heat exchanger as claimed in claim 1, it is characterized in that: described wlding is a hot melt film, and set-up mode is for pasting.
5. one kind is adopted the flat pipe heat exchanger of assembly method assembling according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010193159.1A CN102266992B (en) | 2010-06-07 | 2010-06-07 | Flat tube heat exchanger and assembly method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010193159.1A CN102266992B (en) | 2010-06-07 | 2010-06-07 | Flat tube heat exchanger and assembly method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102266992A true CN102266992A (en) | 2011-12-07 |
| CN102266992B CN102266992B (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010193159.1A Expired - Fee Related CN102266992B (en) | 2010-06-07 | 2010-06-07 | Flat tube heat exchanger and assembly method thereof |
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| CN (1) | CN102266992B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615489A (en) * | 2012-04-16 | 2012-08-01 | 南京瑞科特热能设备有限公司 | Connection method of stainless steel fin plate and hole plate |
| CN104043956A (en) * | 2014-05-23 | 2014-09-17 | 上海和科设备制造有限公司 | Positioning detecting device and positioning detecting method for collecting pipe of heat exchanger on core assembly part |
| CN104148912A (en) * | 2014-06-30 | 2014-11-19 | 美的集团武汉制冷设备有限公司 | Parallel flow heat exchanger and method for controlling distance between fins of parallel flow heat exchanger |
| CN104625694A (en) * | 2015-01-14 | 2015-05-20 | 浙江康盛热交换器有限公司 | Heat exchanger assembling device and method |
| CN105526820A (en) * | 2016-01-27 | 2016-04-27 | 河南新科隆电器有限公司 | Finned type micro-channel heat exchanger |
| CN105666027A (en) * | 2016-04-08 | 2016-06-15 | 株洲博雅实业有限公司 | Modular welding-based and robot-based manufacturing method of cooling hydraulic blower |
| CN109737644A (en) * | 2018-12-29 | 2019-05-10 | 东莞市丰瑞德温控技术有限公司 | A kind of manufacture craft of the parallel flow heat exchanger of enhancing structure intensity |
Citations (5)
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| JPH0979766A (en) * | 1995-09-12 | 1997-03-28 | Nippon Light Metal Co Ltd | Heat exchanger and its manufacture |
| JPH1089870A (en) * | 1996-09-18 | 1998-04-10 | Nippon Light Metal Co Ltd | Manufacture of heat exchanger and heat exchanger |
| CN1710367A (en) * | 2005-06-24 | 2005-12-21 | 清华大学 | Micro-path parallel current heat-exchanger for transcritical Co2 circulation and mfg. method |
| JP2006297472A (en) * | 2005-04-25 | 2006-11-02 | Valeo Thermal Systems Japan Corp | Manufacturing method of heat exchanger, and fin and tube of heat exchanger |
| CN101520282A (en) * | 2009-04-13 | 2009-09-02 | 三花丹佛斯（杭州）微通道换热器有限公司 | Microchannel heat exchanger and heat exchanging system |
-
2010
- 2010-06-07 CN CN201010193159.1A patent/CN102266992B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0979766A (en) * | 1995-09-12 | 1997-03-28 | Nippon Light Metal Co Ltd | Heat exchanger and its manufacture |
| JPH1089870A (en) * | 1996-09-18 | 1998-04-10 | Nippon Light Metal Co Ltd | Manufacture of heat exchanger and heat exchanger |
| JP2006297472A (en) * | 2005-04-25 | 2006-11-02 | Valeo Thermal Systems Japan Corp | Manufacturing method of heat exchanger, and fin and tube of heat exchanger |
| CN1710367A (en) * | 2005-06-24 | 2005-12-21 | 清华大学 | Micro-path parallel current heat-exchanger for transcritical Co2 circulation and mfg. method |
| CN101520282A (en) * | 2009-04-13 | 2009-09-02 | 三花丹佛斯（杭州）微通道换热器有限公司 | Microchannel heat exchanger and heat exchanging system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615489A (en) * | 2012-04-16 | 2012-08-01 | 南京瑞科特热能设备有限公司 | Connection method of stainless steel fin plate and hole plate |
| CN104043956A (en) * | 2014-05-23 | 2014-09-17 | 上海和科设备制造有限公司 | Positioning detecting device and positioning detecting method for collecting pipe of heat exchanger on core assembly part |
| CN104148912A (en) * | 2014-06-30 | 2014-11-19 | 美的集团武汉制冷设备有限公司 | Parallel flow heat exchanger and method for controlling distance between fins of parallel flow heat exchanger |
| CN104148912B (en) * | 2014-06-30 | 2016-06-22 | 美的集团武汉制冷设备有限公司 | The control method of parallel-flow heat exchanger and a fin pitch of fins thereof |
| CN104625694A (en) * | 2015-01-14 | 2015-05-20 | 浙江康盛热交换器有限公司 | Heat exchanger assembling device and method |
| CN105526820A (en) * | 2016-01-27 | 2016-04-27 | 河南新科隆电器有限公司 | Finned type micro-channel heat exchanger |
| CN105666027A (en) * | 2016-04-08 | 2016-06-15 | 株洲博雅实业有限公司 | Modular welding-based and robot-based manufacturing method of cooling hydraulic blower |
| CN109737644A (en) * | 2018-12-29 | 2019-05-10 | 东莞市丰瑞德温控技术有限公司 | A kind of manufacture craft of the parallel flow heat exchanger of enhancing structure intensity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102266992B (en) | 2015-06-03 |
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