The tube bank positioning tool of heat exchanger
Technical field
The present invention relates to the manufacturing process of heat exchanger, the tube bank positioning process method during especially parallel-flow heat exchanger is made.
Background technology
Parallel-flow heat exchanger is made up of porous flat pipe, radiating fin and header.The flat tube two ends are inserted left header and right header respectively, utilize the dividing plate that is arranged on left header and the right header to separate and formation polyphone passage.Fin and header surfaces coated are covered with solder and brazing flux, and whole core body is used the anchor clamps clamping, form through the soldering oven integral solder.Parallel-flow heat exchanger is mainly used in air conditioning for automobiles in early days, has also obtained in fields such as business air conditioner, domestic air conditioning, coolers in recent years using widely.
Parallel-flow heat exchanger is wanted earlier flat tube, fin and header to be assembled in process, gets into the soldering oven welding then.
Existing a kind of assembly technology is, earlier will every flat tube inserts slot on the header one by one with the composition framework, and then radiating fin is put into the space between the flat tube.Because the spacing of flat tube and the height of radiating fin are about equally, very difficult when therefore packing fin in the space between flat tube, efficiency of assembling is very low.Sometimes also will utilize the elasticity of flat tube to push body open certain distance laterally, so that pack fin into, this is operating difficulties not only with the spacing between the temporary transient expansion flat tube, and can bring hidden danger of quality.Further, along with the carrying out of fin assembling, the fin of between most of flat tube, having packed into will be pushed remaining body open just more difficult operation, and quality problems also take place more easily.
Existing another kind of Assembling Production technology is, earlier will every flat tube insert one by one have slot reference column with the composition framework, again radiating fin is put into the space between the flat tube, take off the reference column of both sides then and header be installed.This assembly technology, the slot spacing on the reference column can be slightly larger than the slot spacing on the header.Correspondingly, insert the height that tube pitch behind the flat tube also just is slightly larger than radiating fin, have certain surplus, thereby be easier to space between the flat tube radiating fin of packing into.But after accomplishing the fin assembling, taking off the reference column of both sides, flat tube and fin are compressed,, the spacing of flat tube and the slot spacing of header are complementary, header could be installed to eliminate the surplus in the gap between flat tube and the fin with instrument.And for large-scale parallel-flow heat exchanger; When compressing because flat tube and fin are interference fit; The position of a lot of root flat tubes and the slot of header tend to occur certain skew, every flat tube are all inserted also very difficulty, the adjustment one by one usually of corresponding slot.
Above-mentioned existing Assembling Production technology, and just in the new technology of research and development, a requisite process is with a branch of flat tube separately, inserts slot or the slot on the reference column or other detent mechanism on the header.Present production technology, this process are by manual flat tube to be inserted slot or detent mechanism one by one, operation inconvenience, and inefficiency needs to improve process and enhances productivity.
Summary of the invention
The purpose of the utility model is in order to solve the low problem of operating efficiency when a branch of flat tube separately inserted slot or detent mechanism one by one; A kind of tube bank positioning tool and assembly method that is used for a branch of flat tube is inserted quickly and accurately the slot or the detent mechanism of setting is provided; The structural design advantages of simple has significantly improved the production efficiency of restraining the location assembling process.
The described technical problem of the utility model solves through following technical proposals:
A kind of tube bank positioning tool of heat exchanger comprises support and one group of spacer, all is provided with spacing rope or limit spring between the adjacent positioned sheet, it is characterized in that:
1) spacer is rack-mount, and can endwisely slipping along support;
2) front end of spacer is provided with the pilot pin that the position of one or more and flat tube micropore is complementary, and can insert in one or more micropores of flat tube;
3) spacing rope between the spacer or limit spring are in when tightening up state, and the pitch of fins of spacer equates with the thickness d t of flat tube, therefore can the pilot pin of one group of spacer front end be inserted in the micropore of a branch of flat tube that stacks simultaneously;
When 4) spacing rope between the spacer or limit spring are in open configuration, the pitch of fins of spacer reach set apart from ds.
Need to prove that shown in accompanying drawing 3, accompanying drawing 6, an alleged pitch of fins in the utility model patent is meant the spacing on adjacent two spacer tops, comprised spacing and the thickness of a slice spacer between adjacent two spacers; Alleged pipe distance in the utility model patent is meant the spacing of adjacent two flat tube end faces, has comprised spacing and the thickness of a flat tube between adjacent two flat tubes.
Usually, ds=dt+ (1.0~1.5) * df.Wherein: ds is the pipe distance of setting, and dt is the thickness of flat tube, df be the height of the fin that will insert.
A kind of tube bank positioning tool of described heat exchanger; The shape of said spacer is that the rear portion is thicker and anterior thinner; It is characterized in that: the thickness at spacer rear portion equates with the thickness d t of flat tube; The thickness d n of the pilot pin that spacer is anterior can insert in the micropore of flat tube pilot pin less than the aperture di of flat tube micropore.
Need to prove that the micropore shape in the flat tube is generally the combination of square hole, oblong aperture, circular hole, square hole and circular hole, alleged micropore size in the utility model patent, the length of side, oblong aperture that are meant square hole are at the length of side of flat tube thickness direction, the diameter of circular hole.
A kind of tube bank positioning tool of described heat exchanger, the thickness d n of spacer are uniformly, and less than the aperture di of flat tube micropore, pilot pin can be inserted in the micropore of flat tube.Also be provided with pad between the spacer, the thickness d n of spacer equates with the thickness d t of flat tube with the thickness d w sum of pad, that is: dt=dw+dn.Thereby the position-limit mechanism between the spacer is when tightening up, and the pitch of fins of spacer equates with the thickness of flat tube.
A kind of tube bank positioning tool of described heat exchanger, the spacer of end is provided with handle, is used for the axial withdrawal of other spacer along support.All be provided with spacing rope between the adjacent positioned sheet, the spacing of the slot on the length of spacing rope and header or the reference column is complementary, the pitch of fins after spacer is drawn back reach set apart from ds.
The assembly method of the tube bank positioning tool of described heat exchanger may further comprise the steps:
1) spacer with said tube bank positioning tool tightens up, and the pitch of fins of spacer equates with the thickness d t of flat tube;
2) pilot pin of one group of spacer front end after said the tightening up is inserted in the side micropore of a branch of flat tube that stacks, the pilot pin of the spacer front end after another group is tightened up is inserted in the opposite side micropore of said flat tube tube bank;
3) handle on the said spacer of pulling, spacer drives the flat tube tube bank and opens, and pipe is apart from reaching the spacing ds that sets;
4) take off the spacer of flat tube both sides, and open flat tube tube bank is inserted in the slot on header or the reference column.
A kind of tube bank positioning tool of described heat exchanger is provided with alignment pin on said support, be used for after spacer is tightened up, spacer being pinned, and this moment, the pitch of fins of spacer equated with the thickness d t of flat tube.Between said spacer, be provided with limit spring, be used for spacer axially opening along support.The spacing of the slot on length when limit spring is in free state and header or the reference column is complementary, the pitch of fins after spacer is opened reach set apart from ds.
The assembly method of the tube bank positioning tool of described heat exchanger may further comprise the steps:
1) spacer of said tube bank positioning tool being tightened up the back pins with the alignment pin on the support;
2) pilot pin of the said one group of spacer front end that tightens up is inserted in the side micropore of a branch of flat tube that stacks, the pilot pin of the spacer front end that another group is tightened up is inserted in the opposite side micropore of said flat tube tube bank;
3) open alignment pin on the support, limit spring flicks, drive spacer with flat tube tube bank open, the pipe distance reaches the spacing ds that sets;
4) take off the spacer of flat tube both sides, and open flat tube tube bank is inserted in the slot on header or the reference column.
Effective effect of the utility model is, through the tube bank positioning tool, disposable one group of tube bank automatically is flared to predefined tube pitch and position, and do not need manual location, a root ground, restrains the efficiency of assembling of locating thereby significantly improved.
Description of drawings
Fig. 1 is the structural representation of flat tube tube bank;
Fig. 2 is the structural representation of duct type heat exchanger;
Fig. 3 is the vertical view of the tube bank positioning tool of embodiment one;
Fig. 4 is the structural representation of the tube bank positioning tool of embodiment one;
Fig. 5 is the structural representation (tightening up state) of assembling process of the tube bank positioning tool of embodiment one;
Fig. 6 is the structural representation (open configuration) of assembling process of the tube bank positioning tool of embodiment one;
Fig. 7 is the vertical view of the tube bank positioning tool of embodiment two;
Fig. 8 is the structural representation of the tube bank positioning tool of embodiment two.
Among the figure: 1. flat tube, 2. fin, 3. header; 101. support, 102. spacers, 103. pilot pins, 104. spacing ropes, 105. handles; 201. support, 202. spacers, 203. pilot pins, 204. pads, 205. limit spring, 206. alignment pins.
The specific embodiment
Accompanying drawing 1 is the structural representation of flat tube tube bank.In the flat tube of manufacturing heat exchanger is common one group of micropore is arranged, flat tube thickness is dt, and the micropore internal diameter is di.Normally, flat tube thickness d t is 1.0~3.0mm, and micropore inner diameter d i is 0.5~2.0mm.When the tube bank of assembling flat tube; Take out a branch of flat tube that stacks shown in accompanying drawing 1 earlier; Flat tube is inserted the slot on header or the reference column one by one, form installation frame, the fin of between flat tube, packing into then; Obtain the assembly of forming by header, flat tube and fin shown in accompanying drawing 2, after setting, send into the soldering oven integral solder.Fin is usually by the continuously extruded bending and forming of aluminium foil, and the height of fin is df.Normally, aluminium foil height df is 6~15mm.This folding warp architecture of aluminium foil makes it all can deform after stressed at height and length direction, and the therefore assembly technology of assembling header after the first flaps will bring slot on flat tube and the header to misplace and the problem that is difficult to install.
Embodiment one:
Present embodiment provides a kind of embodiment and assembly method of the quick positioning tool of tube bank of parallel-flow heat exchanger.
Present embodiment provides a kind of tube bank positioning tool of heat exchanger, comprises support 101 and one group of spacer 102, is provided with spacing rope 104 between the adjacent positioned sheet.Its structure is shown in accompanying drawing 3, accompanying drawing 4, and spacer is in the state of tightening up in the accompanying drawing 3 (A), and spacer is in open configuration in the accompanying drawing 3 (B).
The front end of spacer 102 is provided with the pilot pin 103 that the position of one or more and flat tube micropore is complementary, and can insert in the corresponding one or more micropores of flat tube.The shape of spacer 102 is that the rear portion is thicker and anterior thinner: the thickness at spacer 102 rear portions equates with the thickness d t of flat tube; The thickness d n of the pilot pin 103 of spacer 102 front portions can insert in the micropore of flat tube pilot pin 103 less than the aperture di of flat tube micropore smoothly.
One group of spacer 102 is installed on the support 101, can endwisely slipping along support 101.All be provided with spacing rope 104 between the adjacent positioned sheet 102 and link to each other, the spacing of the slot on the length of spacing rope 104 and header or the reference column is complementary, a pitch of fins after spacer 102 draws back is reached set apart from ds.The spacer 102 of end is provided with handle 105, and push-and-pull handle 105 just can be with spacer 102 axially tightening up or drawing back along support 101.
Spacing rope 104 between the spacer 102 is in when tightening up state; There is not spacing between the adjacent positioned sheet 102; This moment, the pitch of fins of spacer 102 equated with the thickness d t of flat tube, therefore can location 103 pins of one group of spacer front end be inserted in the micropore of a branch of flat tube that stacks simultaneously.When the spacing rope 103 between the spacer 102 is in open configuration, the pitch of fins of spacer 102 reach set apart from ds.
Usually, ds=dt+ (1.0~1.5) * df, wherein: ds is the pipe distance of setting, and dt is the thickness of flat tube, df be the height of the fin that will insert.This makes space between the flat tube that assembles slightly greater than the height of fin, is easy to flaps.
The assembly method of the tube bank positioning tool of the described heat exchanger of present embodiment may further comprise the steps:
1) spacer 102 that will restrain positioning tool tightens up, and the pitch of fins of spacer 102 equates with the thickness d t of flat tube;
2) shown in accompanying drawing 5, the pilot pin 103 of one group of spacer front end after said the tightening up to be inserted in the side micropore of a branch of flat tube that stacks, the pilot pin of the spacer front end after another group is tightened up is inserted in the opposite side micropore of said flat tube tube bank;
3) shown in accompanying drawing 6, spur the handle 105 on the said spacer, spacer 102 drives the flat tube tube bank and opens, and makes pipe apart from reaching the spacing ds that sets;
4) take off the spacer 102 of flat tube both sides, and will open up in the flat tube tube bank insertion header or the slot on the reference column of setting spacing.
Embodiment two:
Present embodiment provides the embodiment and the assembly method of the quick positioning tool of tube bank of another kind of heat exchanger.
Present embodiment provides a kind of tube bank positioning tool of heat exchanger, comprises support 201 and one group of spacer 202, pad 204, all is provided with limit spring 205 between the adjacent positioned sheet.Its structure is shown in accompanying drawing 7, accompanying drawing 8, and spacer is in the state of tightening up in the accompanying drawing 7 (A), and spacer is in open configuration in the accompanying drawing 7 (B).
The front end of spacer 202 is provided with the pilot pin 203 that the position of one or more and flat tube micropore is complementary, and can insert in the corresponding one or more micropores of flat tube.The thickness d n of spacer 202 is uniformly in the present embodiment, and less than the aperture di of flat tube micropore, pilot pin 203 can be inserted in the micropore of flat tube.Also be provided with pad 204 between the spacer 202, the thickness d n of spacer equates with the thickness d t of flat tube with the thickness d w sum of pad, that is: dt=dw+dn.Thereby when the position-limit mechanism between the spacer tightened up, the pitch of fins of spacer equated with the thickness of flat tube, can the pilot pin 203 of one group of spacer front end be inserted in the micropore of a branch of flat tube that stacks simultaneously.
One group of spacer 202 is installed on the support 201, can endwisely slipping along support 201.Be provided with limit spring 205 between the adjacent positioned sheet 202, be used for spacer 202 axially opening along support 201.On support 201, be provided with alignment pin 206, be used for after spacer 202 is tightened up, spacer being pinned, to offset the elastic force of limit spring 205, this moment, the pitch of fins of spacer equated with the thickness d t of flat tube.Open alignment pin 206, limit spring 205 drives the flat tube tube bank and opens under the effect of spring force.The length when being in free state after limit spring 205 is opened and the spacing of the slot on header or the reference column are complementary, a pitch of fins after spacer 202 opens is reached set apart from ds.
Usually, ds=dt+ (1.0~1.5) * df, wherein: ds is the pipe distance of setting, and dt is the thickness of flat tube, df be the height of the fin that will insert.This makes space between the flat tube that assembles slightly greater than the height of fin, is easy to flaps.
The assembly method of the tube bank positioning tool of the described heat exchanger of present embodiment may further comprise the steps:
1) shown in accompanying drawing 7 (A), the spacer 202 of said tube bank positioning tool is tightened up the back with 206 pinnings of the alignment pin on the support 201;
2) pilot pin 203 of one group of spacer 202 front end after said the tightening up is inserted in the side micropore of a branch of flat tube that stacks, the pilot pin of the spacer front end after another group is tightened up is inserted in the opposite side micropore of said flat tube tube bank;
3) shown in accompanying drawing 7 (B), open the alignment pin 206 on the support, limit spring 205 flicks, and drives the tube bank of spacer 202 and flat tube and opens, and makes pipe apart from reaching the spacing ds that sets;
4) take off the spacer 202 of flat tube both sides, and open flat tube tube bank is inserted in the slot on header or the reference column.
According to the different processes scheme, can be the above-mentioned the 3rd) the step fin of packing into earlier after accomplishing, implement the 4th again) step takes off spacer, compresses after flat tube and the fin slot that flat tube is inserted header; Also can be the above-mentioned the 3rd) after step accomplishes, directly, fin is installed again with the whole slot that inserts on header or the reference column of open flat tube tube bank.The different processes scheme cuts both ways, and does not reach the lifting to tube bank position fixing process efficient but these schemes all do not influence the enforcement of the utility model.