CN110385561A

CN110385561A - The manufacturing process of tube assembly and the tube assembly

Info

Publication number: CN110385561A
Application number: CN201810346818.7A
Authority: CN
Inventors: 不公告发明人
Original assignee: Hangzhou Sanhua Research Institute Co Ltd
Current assignee: Hangzhou Sanhua Research Institute Co Ltd
Priority date: 2018-04-18
Filing date: 2018-04-18
Publication date: 2019-10-29

Abstract

The present invention relates to a kind of tube assembly and its manufacturing process, including ontology and sleeve, sleeve is made of copper material, ontology is not made of copper material, sleeve includes barrel, barrel is in hollow tubular, the ontology includes tubular portion, tubular portion surrounds tubular portion inner cavity, the at least described barrel is inserted into tubular portion inner cavity, at least partly tubular portion and barrel are cooperatively connected, at least partly the inner wall part of tubular portion or/and the peripheral part of at least partly described barrel are coated with solder layer, after welding, weld seam is formed between the inner wall part of tubular portion and the peripheral part of the barrel；Improve soldering reliability.

Description

The manufacturing process of tube assembly and the tube assembly

Technical field

The invention belongs to refrigeration technology field, a kind of tube assembly and its manufacturing process are related generally to.

Background technique

The product of refrigeration technology field includes air-conditioning, refrigerator, refrigerator-freezer etc., these general systems will use copper pipe as connection Pipe connects two components, and in order to easy to connect with copper pipe, many components also all mutually should be copper material and be made.Such as liquid reservoir disappears The basic element of character in sound device, four-way valve, solenoid valve, compressor etc. refrigeration system, but these components are likely to work one now Change on a little material selections, such as stainless steel material is selected, it may can use between two kinds of unlike materials in systems Connectivity problem.

System may will relate to how to realize the connection between two kinds of unlike materials such as stainless steel material and copper pipe in this way Fixation problem.

Summary of the invention

The present invention provides a kind of tube assembly and its manufacturing process, and tube assembly structure is simple, facilitates welding, and it is reliable to improve connection Property, thus the following technical schemes are provided:

A kind of tube assembly, including ontology and sleeve, the ontology and the welded fixation of sleeve, the sleeve is by copper material It is made, the ontology is not made of copper material, and the sleeve includes barrel and valgus, and the barrel is in hollow cylinder Shape, the valgus are formed from the barrel outward flanging or bending, and the barrel and valgus are structure as a whole, described Ontology includes tubular portion, and the tubular portion surrounds tubular portion inner cavity, and at least partly described barrel is inserted into the tubular portion inner cavity, At least partly described tubular portion and the barrel are cooperatively connected, the inner wall part of at least partly described tubular portion or/and at least portion The peripheral part of the barrel is divided to be coated with solder layer, after welding, the inner wall part and the barrel of the tubular portion Weld seam is formed between peripheral part.

A kind of manufacturing process of tube assembly is also provided simultaneously, the tube assembly includes ontology and sleeve, the forming of tube assembly Method the following steps are included:

Preliminary working is carried out to the ontology, the ontology includes tubular portion, and the tubular portion includes inner wall part, the inner wall Portion surrounds tubular portion inner cavity；

Preliminary working carried out to the sleeve, including to the sleeve by turning up or bending forms barrel and valgus；

The inner wall part or/and the peripheral part of the barrel are coated with solder layer；

The ontology and the sleeve are assembled, the barrel is inserted into tubular portion inner cavity；

Tube assembly is placed in furnace soldering equipment, between the peripheral part of the barrel of the inner wall part of the tubular portion and the sleeve It is formed with weld seam.

By the peripheral part of the inner wall part or the sleeve be coated with solder layer, between the ontology and the sleeve at Shape has weld seam, can be according to the requirement of welding and ontology and sleeve so that ontology and sleeve two different materials welding Length of fit solder-coating layer, can solve due to the distance of welding portion it is big caused by solder flux flowing it is insufficient, in turn Improve soldering reliability.

Detailed description of the invention

Fig. 1: a kind of structural schematic diagram for tube assembly that the present invention provides, Fig. 1 are a kind of partial structurtes signals of muffler Figure；

Fig. 2: the enlarged diagram at the position A of tube assembly shown in FIG. 1；

Fig. 3: the A-A of tube assembly shown in Fig. 2 to partial schematic sectional view；

Fig. 4: the partial enlargement diagram of tube assembly shown in Fig. 3；

Fig. 5: the structural schematic diagram of the part of secundal viae component；

Fig. 6: the enlarged diagram at the position B of tube assembly shown in fig. 5；

Fig. 7 a: positive structure diagram of one of embodiment of above-mentioned sleeve；

Fig. 8: the structural schematic diagram of the part of the third tube assembly；

Fig. 9: the enlarged diagram at the position C of tube assembly shown in Fig. 8；

Figure 10: the schematic front view of the another embodiment of above-mentioned sleeve.

Specific embodiment

Below in conjunction with specific embodiment, technical solution is illustrated.

Tube assembly is specifically described by taking a kind of muffler as an example below, Fig. 1-Fig. 4 please be join, Fig. 1 is a kind of muffler Structural schematic diagram (interior details are not shown), Fig. 2 be the position A shown in FIG. 1 partial enlargement diagram, Fig. 3 be Fig. 2 shown in The A-A of structure to partial schematic sectional view, Fig. 4 be Fig. 3 partial enlargement diagram.

As shown, muffler includes ontology 20 and two sleeves 10, ontology 20 passes through spinning side using stainless steel pipe Formula processes to be formed, and is formed at the both ends of ontology 20 by necking and flows into the connection port 21 flowed out with fluid, end for fluid The bore of mouth 21 is less than the equivalent diameter of the middle part 25 of ontology 20, and ontology 20 includes the tubulose for being cooperatively connected with sleeve 10 Portion 24, tubular portion 24 are provided with stage portion 22 at the inner wall position of port 21.Certain ontology 20 can also be made of aluminium.Pipe Shape portion inner cavity is the port 21 in the present embodiment.

The sleeve for connection 10 made of copper tubing is including valgus 12 and substantially in the barrel 11 of hollow tubular, outside The opposite exterior lateral sides that portion 12 is located at ontology 20 are turned over, barrel 11 and tubular portion 24 cooperate, and barrel 11 is located substantially on the pipe of ontology In shape portion 24 in other words in at least most of tubular portion 24 positioned at ontology of barrel 11, the sleeve 10 of the present embodiment is further comprised Varus portion 15, varus portion 15 be the relatively inner one end of sleeve 10 formed via barrel 11 to in-flanges or bending or through flange or Bending is formed, and " flange or bending are formed " includes directly processing to be formed or through flange through the modes such as flange or bending in this specification Or it is machined again after the processing such as bending form, varus portion 15 and barrel 11 form a positioning step portion, positioning step Positioning when portion 151 can be used for being welded to connect with after silencer and connecting copper pipe, valgus 12 are the relatively outer one end warp of sleeve 10 Formed by 11 outward flanging of barrel or bending, equally include here outward flanging or bending and it is machined form, turn up The substantially ring-like structure in portion 12 is protruded by barrel 11 and is arranged.Sleeve 10 further includes guide part 14, the barrel of the present embodiment 11, valgus 12, varus portion 15 are structure as a whole.

Sleeve 10 is pressed into the connection port 21 of ontology 20, makes the peripheral part 111 of barrel 11 and the port of ontology 20 The inner wall part 240 of 21 position tubular portions 24 forms the matching relationship of local interference, local gap, thus make sleeve 10 and ontology it Between preliminary fixed form it is relatively stable, can be placed directly in furnace to be brazed in this way can not such as use by others are fixed Tooling is by soldering furnace such as continuous tunnel furnace, to reduce process costs.Between inner wall part and peripheral part interference assembling after be shown as to The form connect.The end 23 of valgus 12 and ontology can equally form the cooperation of basic compression or local compaction, local gap Relationship.The distance of end face 23 of the stage portion 22 apart from ontology 20 be greater than the barrel length ontology 20 stage portion 22 with An annulus 211 is formed between the varus portion 15 of sleeve 10, interference when can prevent ontology and sleeve from installing is guaranteeing In the case where the intensity of tubular portion, the setting of stage portion advantageously reduces the diameter difference of barrel bore and chamber body, favorably In the flowing fluency of fluid.Local mistake between the inner wall part 240 of the tubular portion 24 of the peripheral part 111 and ontology 20 of barrel 11 It is full of, local gap, the position between the barrel 11 and tubular portion 24 after can making assembling radially, axially is relatively fixed reliable. The ontology 20 of the present embodiment matches the inner wall part 240 and protrusion 241 for sharing tubular portion 24, and protrusion 241 slightly protrudes from inner wall Portion 240 is arranged, and protrusion 241 can be multiple strip protrusions, as shown in Fig. 2, the length of protrusion 241 is less than barrel 11 With the length L of inner wall part cooperation, again smaller than the length L of inner wall part and the cooperation of barrel 11, and two back gauge cooperation positions are equal There is certain axial distance, i.e., strip protrusion is not to prolong always to the setting of protrusion 241 in other words in 240 medium position of inner wall part Reaching end 23 has a certain distance apart from end 23 in other words, and in addition protrusion 241 also has a spacing apart from stage portion 22 Both ends from, such protrusion 241 can solder-coating layer, to guarantee welding quality.The height substantially outstanding of protrusion 241 It can be between 0.05-0.15mm.Axial direction is defined as with the axial direction of ontology in this specification.Since protrusion is to make the two Between local interference and make the structure that local interference, local gap are formed between two mating surfaces, therefore to prominent in this specification Rise portion section shape with no restriction, as long as achieving the goal.

In addition the peripheral part 111 that can equally make barrel 11 in this way in sleeve peripheral part and this also can be set in protrusion The matching relationship of local interference, local gap is formed between the inner wall part 240 of the 21 position tubular portion 24 of port of body 20.

In the present embodiment, the inner wall part of tubular portion is coated with solder layer, wherein the solder applied can be in ontology raw material Surface coating can also apply after ontology forming；After welding, it is formed with weld seam between inner wall part and the peripheral part of barrel, By ontology and the two different material welding of sleeve, solder layer can be long according to the requirement of welding and the cooperation of ontology and sleeve Degree coating, can solve due to the distance of welding portion it is big caused by solder flux flowing it is insufficient, and then solve not prison welding Solid problem.

In the present embodiment, the region of the inner wall part of the tubular portion between the end face and stage portion of ontology is coated with solder layer, The thickness of solder layer is less than the height of projection of protrusion, the solder that 241 uncoated solder layer of protrusion or protrusion 241 apply The thickness for the solder layer that the thickness of layer is less than the thickness of the solder layer of inner wall part coating or protrusion 241 applies is equal to inner wall part The thickness of the solder layer of coating.In the present embodiment, the not set protrusion of sleeve outer peripheral surface, sleeve peripheral part uncoated solder layer.

Solder layer, ontology not solder-coating layer, since sleeve applies can certainly be coated in the peripheral part of barrel Solder layer is easier in its peripheral part, coating, and the not set protrusion in its surface, and solder layer is more uniform, advantageously ensures that weldering Connect fastness.The surface of valgus and body fits can also be welded to connect area with solder-coating layer and then raising, further mention High fastness.

The manufacturing process of tube assembly in the present embodiment includes the following steps:

Preliminary working is carried out to ontology, ontology includes tubular portion, and the tubular portion includes inner wall part, and the inner wall part is around pipe Shape portion inner cavity；

The inner wall part or/and the peripheral part of the barrel are coated with solder layer；Wherein, solder layer can be in ontology Raw material coating can also apply after ontology forming；

The tubular portion further includes protrusion, and the manufacturing process of the tube assembly further includes by punching press to the ontology Shape protrusion, at least described protrusion along the tubular portion axially spaced-apart be arranged, the protrusion from the inner wall part to The peripheral part 111 of the barrel 11 of the cavity protrusion that the tubular portion is formed, at least partly described protrusion and the sleeve it Between interference；The thickness of solder layer described in the protrusion uncoated or the solder layer of protrusion coating is less than the inner wall The thickness of the thickness of portion's solder layer or the solder layer of protrusion coating is equal to the thickness of the inner wall part solder layer.

The peripheral part of the barrel includes base portion and multiple raised lines, and the raised line is protruded from the base portion, the raised line Length be less than the axial length of the barrel, multiple raised lines are arranged along cylinder circumferencial direction interval, at least portion The base portion is divided to be coated with the solder layer, interference between at least partly described raised line and the inner wall part of the tubular portion is described The thickness of solder layer described in raised line uncoated or the solder layer of raised line coating is less than the solder layer of base portion coating Thickness after welding, is formed with weld seam between the inner wall part of the tubular portion and the peripheral part of barrel.

Second of embodiment of tube assembly is described below, structure is different from the first embodiment, manufacturing process it is main Step is identical；It please join Fig. 5-Fig. 7, tube assembly includes ontology 20 and sleeve 10, and ontology 20 uses the processed formation of stainless steel pipe, Ontology 20 includes connection port 21, and ontology is provided with stage portion 22 at the inner wall position of port 21, and ontology 20 includes and sleeve 10 tubular portions 24 being cooperatively connected.The sleeve for connection 10 made of copper tubing includes valgus 12a and is substantially in hollow cylinder The barrel 11 of shape, sleeve 10 are pressed into the connection port 21 of ontology 2, make the peripheral part 111 of barrel 11 and ontology 20 The inner wall part 240 of tubular portion 24 forms the matching relationship of local interference, local gap, to make to be pressed between sleeve 10 and ontology Tentatively fixed relationship is formed afterwards, and can be placed directly in furnace to be brazed can not such as be passed through by others are fixed with tooling Continuous tunnel furnace, to reduce process costs.The end 23 of valgus 12a and ontology forms local compaction, the cooperation of local gap is closed System.An annulus 211 is formed between the stage portion 22 of ontology 20 and relatively inner the other end of sleeve 10.It turns up The end 23 of portion 12a and ontology forms the matching relationship of local compaction, local gap, and specifically, sleeve is in valgus 12a direction The relatively outer position of the mating surface of end 23 is provided with protrusion 121, and such as Fig. 7, protrusion 121 can be the knot of non-close Notch 1211 can be set in the part of protrusion 121 in structure, be in addition also possible to closing form, the protrusion of protrusion 121 Height h can control between 0.05mm-0.20mm, and the setting of protrusion can be such that the weld seam between valgus and end exposes It is relatively fewer.Other structures are referred to above example.

In addition the protrusion cooperated between valgus and end also can be set in ontology side, as Fig. 8-Fig. 9, Fig. 8 are The structural schematic diagram of the part of the third tube assembly, Fig. 9 are the enlarged diagram at the position C of tube assembly shown in Fig. 8.This implementation Example is that valgus is different with the position of protrusion setting that body end cooperates from the difference of second embodiment, in ontology 20 The end face of end 23a towards the valgus 12 of sleeve is provided with protrusion.Other structures are referred to second embodiment above.

A kind of embodiment for the sleeve that above-described embodiment may be used, such as Figure 10 is described below.Sleeve 10 includes turning up Portion 12b, varus portion (not shown), with substantially be in hollow tubular barrel 11, valgus 12, varus portion and barrel 11 It is structure as a whole.Valgus 12b and varus portion are respectively arranged at the two sides of barrel 11, and varus portion can be sleeve 10 to varus Side or bending are formed, include here through flange or bending and it is machined form, valgus 12b be 10 outward flanging of sleeve or Bending is formed, equally include here through flange or bending and it is machined form, the substantially ring-like structure of valgus 12b can For including base portion 1111 and raised line 1112 with the peripheral part 111 of the cooperation of the end end face of ontology, barrel 11, raised line 1112 from The protrusion setting of base portion 1111, and raised line 1112 is relatively shorter the length of the peripheral part 111 of barrel, the length of raised line 1112 can be with Be the length of the peripheral part 111 of barrel one third between 2/3rds, the two sides of raised line 1112 all have base portion, this Sample can guarantee welding quality, and in addition raised line can also be replaced with multiple salient points, the rising height h of the protrusions such as raised line or salient point It can control between 0.05mm-0.2mm, the cross sectional shape of raised line or salient point is here with no restriction.Sleeve 10, which is additionally provided with, leads To portion 14.

In the above-described embodiments, several salient points also can be set on the outer wall of the barrel of sleeve as protrusion, equally The matching relationship for constituting local interference, local gap between outer wall and inner wall can be played, not only ease of assembly, but also hold welding Easily realize.

In the above-described embodiments, sleeve can be separately positioned on the inlet end and outlet end of components or flow path, answer It should be it is appreciated that according to actual needs, the inlet end or outlet end of flow path can be positioned only at, this also belongs to this technology side The protection scope of case.Explanation can be used for muffler above, in addition can be used for liquid reservoir, reversal valve, solenoid valve, cut-off The components of the system replaced with stainless steel material may be needed after valve, check valve, electric expansion valve, compressor etc. or are System, can be used for refrigeration system, such as can be used for air-conditioning system, refrigerator, refrigerator-freezer, and air-conditioning system or other refrigeration systems include one A first component, the first component have tube assembly recited above, and specifically, one of them of the first component is for connection Ontology is made of stainless steel material, can make ontology as described in above-described embodiment in this way, cooperates sleeve described above, tube assembly Sleeve one end and ontology are welded to connect, and refrigeration system additionally includes the copper pipe with sleeve connection, sleeve and this external use copper pipe The fusion temperature of welded connection, the sleeve of tube assembly and the used solder of copper pipe welding for example substantially can 850 DEG C ± 50 DEG C or so, lower than the fusion temperature of the sleeve and the stainless steel welded solder used, 1000 DEG C or so or 1030 DEG C Left and right, welding temperature subsequent in this way are lower than original welding temperature, will not have an impact to original welding position, i.e., convenient The connection between stainless steel and copper pipe is realized, keeps selection of the system on components more convenient.

A kind of manufacturing process of tube assembly, the tube assembly include ontology and sleeve, the manufacturing process of tube assembly include with Lower step:

The peripheral part 111 of barrel 11 includes base portion 1111 and raised line 1112, and raised line 1112 is protruded from base portion 1111 to be arranged, And raised line 1112 is relatively shorter the length of the peripheral part 111 of barrel, the length of raised line 1112 can be the peripheral part of barrel For the one third of 111 length between 2/3rds, the manufacturing process of the barrel further includes by punching press to described Base portion shapes raised line, and at least described raised line is arranged along the axially spaced-apart of the barrel, and the raised line is from the inner wall part to institute State the cavity protrusion of barrel formation, the inner wall part interference fit of at least partly described raised line and the tubular portion.

The above is only preferably to illustrate several embodiments that relevant technical solution is enumerated, it is noted that with Upper embodiment be only used to illustrate the technical scheme of the present invention and not limit, such as to "front", "rear", "left", "right", "upper", "lower" "inner", "outside" isotropy define, and for those skilled in the art, are not departing from technical principle Under the premise of, several improvements and modifications can also be made, can be such as combined with each other, be modified or equivalent replacement, and all The technical solution and its improvement of the spirit and scope of this programme are not departed from, all these improvements and modifications also should be regarded as of the invention Protection scope.

Claims

1. a kind of tube assembly, including ontology (20) and sleeve (10), the ontology (20) and sleeve (10) welded fixation, described Sleeve is made of copper material, and the ontology is not made of copper material, and the sleeve (10) includes barrel (11) and outer Portion is turned over, the barrel (11) is in hollow tubular, and the valgus is formed from the barrel (11) outward flanging or bending, institute It states barrel (11) and valgus is structure as a whole, the ontology (20) includes tubular portion, and the tubular portion is in tubular portion Chamber, at least partly described barrel (11) are inserted into the tubular portion inner cavity, at least partly described tubular portion (24) and the cylinder Portion is cooperatively connected, and the peripheral part of the inner wall part of at least partly described tubular portion or/and at least partly described barrel is coated with weldering The bed of material after welding, is formed with weld seam between the inner wall part of the tubular portion and the peripheral part of the barrel.

2. tube assembly as described in claim 1, it is characterised in that: the tubular portion (24) further includes protrusion, the protrusion Portion is raised from the inner wall part to the tubular portion inner cavity, and multiple protrusions are arranged along the axially spaced-apart of the tubular portion, At least partly described inner wall part is coated with the solder layer, the periphery of at least partly described protrusion and the barrel of the sleeve Interference between portion.

3. tube assembly as claimed in claim 2, it is characterised in that: the inner wall part of the tubular portion is provided with stage portion (22), The distance of end face of the stage portion apart from the ontology is greater than the length of the barrel；The welding layer is coated on described The region of the inner wall part of the tubular portion between the end face of body and the stage portion, the sleeve is in the relatively close step End at portion has at a distance from axial direction between the stage portion.

4. tube assembly as described in claim 1, it is characterised in that: the peripheral part of the barrel include base portion with it is multiple convex Item, external protrusion of the raised line from the base portion to the barrel, the length of the raised line are less than the outer of the barrel The axial length of circumference, multiple raised lines are arranged along cylinder circumferencial direction interval, and at least partly described base portion is coated with Interference between the inner wall part of the tubular portion of the solder layer, at least partly described raised line and the ontology, the raised line uncoated The thickness of the solder layer or the solder layer of raised line coating is less than the thickness of the solder layer of base portion coating, welding Afterwards, weld seam is formed between the inner wall part of the tubular portion and the outside wall portions of the barrel.

5. tube assembly as claimed in claim 4, which is characterized in that the valgus is continuous overall structure, the valgus It is arranged by the barrel (11) outwardly convex, the valgus is located at the outside of the end face of the ontology, and the ontology includes With the end face of valgus cooperation, the end face of the ontology at least partly abuts setting with the valgus of the sleeve.

6. tube assembly as claimed in claim 5, which is characterized in that the sleeve is at the stage portion of the relatively close ontology End further include guide part, the guide part between the stage portion have axial direction at a distance from, the guide part uncoated The welding layer, the raised line are set between the guide part and the valgus.

7. tube assembly as claimed in claim 6, it is characterised in that: the sleeve of the tube assembly is connect with copper pipe, the sleeve with The fusion temperature of solder used in the welded connection of copper pipe, the sleeve of the tube assembly and copper pipe welding is lower than described The fusion temperature of sleeve and the stainless steel welded solder used.

8. a kind of manufacturing process of tube assembly, the tube assembly includes ontology and sleeve, and the manufacturing process of tube assembly includes following Step:

Preliminary working is carried out to the ontology, the ontology includes tubular portion, and the tubular portion includes inner wall part, and the inner wall part encloses Around tubular portion inner cavity；

Tube assembly is placed in furnace soldering equipment, is formed between the outside wall portions of the barrel of the inner wall part of the tubular portion and the sleeve There is weld seam.

9. the manufacturing process of tube assembly as claimed in claim 8, it is characterised in that: the tubular portion (24) further includes protrusion, The manufacturing process of the tube assembly further includes shaping protrusion to the ontology by punching press, and at least described protrusion is described in The axially spaced-apart of tubular portion is arranged, and the cavity that the protrusion is formed from the inner wall part to the tubular portion is raised, at least portion Divide interference between the outside wall portions (111) of the barrel (11) of the protrusion and the sleeve.

10. the manufacturing process of tube assembly as claimed in claim 8, it is characterised in that: the peripheral part of the barrel includes base portion With multiple raised lines, the raised line is protruded from the base portion, and the length of the raised line is less than the axial length of the barrel, multiple The raised line is arranged along cylinder circumferencial direction interval, and at least partly described base portion is coated with the solder layer, at least partly Interference between the raised line and the inner wall part of the tubular portion, solder layer described in the raised line uncoated or raised line coating Solder layer thickness be less than the base portion coating solder layer thickness, after welding, the inner wall part and cylinder of the tubular portion Weld seam is formed between the peripheral part in portion.

11. the manufacturing process of tube assembly as described in claim any one of 8-10, it is characterised in that: the sleeve of the tube assembly with Copper pipe connection, the copper pipe and the tube assembly are placed in furnace soldering equipment simultaneously, the inner peripheral portion of the sleeve or the copper pipe it is outer Circumference is coated with solder layer, and the peripheral part of the inner peripheral portion of the sleeve or the copper pipe is less than coated with the melt temperature of solder layer The peripheral part of the inner wall part of the ontology or the sleeve is coated with the melt temperature of solder layer.