CN204934897U - The electric resistance welding structure of pipe fitting and housing - Google Patents
The electric resistance welding structure of pipe fitting and housing Download PDFInfo
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- CN204934897U CN204934897U CN201520679654.1U CN201520679654U CN204934897U CN 204934897 U CN204934897 U CN 204934897U CN 201520679654 U CN201520679654 U CN 201520679654U CN 204934897 U CN204934897 U CN 204934897U
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- electric resistance
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Abstract
Housing, pipe fitting and the first lug boss that the utility model provides the electric resistance welding structure of a kind of pipe fitting and housing to comprise steel.Housing have pilot hole and at least one junction to be welded.Pipe fitting is assembled by pilot hole and housing, pipe fitting has steel and the weld part extended to the radial direction of pipe fitting.First lug boss is formed between at least one junction to be welded and weld part, and electric resistance welding melts the first lug boss and is connected with case weld by weld part, and it can improve the surface quality of the rear product of welding greatly.
Description
Technical field
The utility model relates to refrigeration accessory welding field, and in particular to the electric resistance welding structure of a kind of pipe fitting and housing.
Background technology
Along with the continuous progress of science and technology, in air-conditioning system, the structure of pipe arrangement there occurs great change, and cost is significantly reduced.For the escape pipe of compressor liquid storage device, its structure adding iron straight tube from traditional copper elbow becomes low cost, high performance full iron pipe or Copper steel cladding pipe (copper tube inner lining or be coated at steel pipe, copper pipe only plays connection function when welding).In the face of this novel pipe arrangement, the welding cost how reduced between pipe arrangement and housing has become the required problem considered of those skilled in the art.
For this novel pipe arrangement, current those skilled in the art adopt operating environment smoke dust, and welding quality is good, and the electric resistance welding without the need to carrying out subsequent treatment after welding welds.Concrete welding method is: form welding plane at the sidewall of novel pipe arrangement, welding plane and housing face contact, and are connected between the two by electric resistance welding.In actual use, because welding plane and housing face contact, along the direction perpendicular to contact surface, each contact point has identical contact resistance, when carrying out current flow heats, when carrying out electric resistance welding, welding current can be shunted along each contact point, needs to use larger welding current during electric resistance welding, the not only higher and increase of welding current of welding cost, easily splash when welding, the quality after impact welding.
Utility model content
The utility model, in order to overcome the deficiencies in the prior art, provides the electric resistance welding structure of a kind of pipe fitting and housing.
To achieve these goals, the utility model housing, pipe fitting and the first lug boss of providing the electric resistance welding structure of a kind of pipe fitting and housing to comprise steel.Housing have pilot hole and at least one junction to be welded.Pipe fitting is assembled by pilot hole and housing, pipe fitting has steel and the weld part extended to the radial direction of pipe fitting.First lug boss is formed between at least one junction to be welded and weld part, and electric resistance welding melts the first lug boss and is connected with case weld by weld part.
In the utility model one embodiment, junction to be welded is housing is formed in the outside of pilot hole and the madial wall of the annular shoulder extended to the radial direction of pilot hole or lateral wall.
In the utility model one embodiment, for rotary extrusion type spinning housing, junction to be welded is the end face of pilot hole sidewall.
In the utility model one embodiment, the first lug boss is the multiple salient points be formed in junction to be welded, multistage arc convex tendon or annular convex rib.
In the utility model one embodiment, the side of annular shoulder near the end of pilot hole to annular shoulder extends to form the first lug boss.
In the utility model one embodiment, the height of weld part is more than or equal to 0.2 millimeter, is less than or equal to 2 millimeters, and the cross-sectional width of weld part is more than or equal to 0.2 millimeter, is less than or equal to 3 millimeters.
In the utility model one embodiment, the side of the first lug boss is provided with solder, when electric resistance welding, solder fusing forms solder layer between weld part and the housing of steel.
In the utility model one embodiment, weld part is be welded to connect in the welding ring of pipe fitting lateral wall or annular flange flange integrated with the lateral wall of pipe fitting.
In the utility model one embodiment, pipe fitting comprises the first body and the second body, weld part comprises the first weld part and the second weld part, the lateral wall of the butt end of the first body has the first weld part, the lateral wall of the butt end of the second body has the second weld part, when the first weld part and the second weld part are positioned at the same side of junction to be welded simultaneously, there is between the first weld part and the second weld part the second lug boss.
In the utility model one embodiment, pipe fitting is carbon steel pipe, stainless steel tube or Copper steel cladding pipe.
In the utility model one embodiment, housing is compressor liquid storage device housing, and pipe fitting is compressor liquid storage device pipe arrangement, or housing is muffler shell, and pipe fitting is muffler pipe arrangement, or housing is gas-liquid separator housing, and pipe fitting is gas-liquid separator pipe arrangement.
In sum, the electric resistance welding structure of the pipe fitting that the utility model provides and housing compared with prior art, has the following advantages:
By arranging the first lug boss at housing between at least one junction to be welded and weld part, the first lug boss makes form little contact surface between junction to be welded and weld part and contact between the two closely.When to when carrying out electric resistance welding between at least one junction to be welded and weld part, the region at the first lug boss place has minimum contact resistance, nearly all electric current is all by the first lug boss, first lug boss produces larger resistance heat, first first projection melts and is filled between at least one junction to be welded and weld part, reduce contact resistance between the two, housing parts and the weld part at junction place to be welded melt gradually and weld together.Compared with the electric resistance welding of existing plane contact, arrange after the first lug boss because nearly all electric current is all by the first lug boss, and there is not the shunting of other parts, therefore littlely at less electric current can carry out electric resistance welding, not only significantly reduce welding cost.Meanwhile, the welding under small area analysis, can not produce splashing when housing and weld part fusing, greatly improve the surface quality of the rear product of welding.
For above-mentioned and other objects, features and advantages of the present utility model can be become apparent, preferred embodiment cited below particularly, and coordinate accompanying drawing, be described in detail below.
Accompanying drawing explanation
Figure 1 shows that the assembling schematic diagram of the electric resistance welding structure of the pipe fitting that the utility model embodiment one provides and housing.
Figure 2 shows that the structural representation of Fig. 1 middle shell and the first lug boss.
Figure 3 shows that the structural representation of the housing that another embodiment of the utility model provides and the first lug boss.
Figure 4 shows that the assembling schematic diagram of the electric resistance welding structure of the pipe fitting that the utility model embodiment two provides and housing.
Figure 5 shows that the enlarged drawing at A place in Fig. 4.
Figure 6 shows that the assembling schematic diagram of the electric resistance welding mechanism of the pipe fitting that the utility model embodiment three provides and housing.
Detailed description of the invention
As depicted in figs. 1 and 2, the electric resistance welding structure of the pipe fitting that provides of the present embodiment and housing comprises the housing 1 of steel, pipe fitting 2 and the first lug boss 3.Housing 1 have pilot hole 11 and at least one junction 12 to be welded.Pipe fitting 2 is assembled by pilot hole 11 and housing 1, pipe fitting 2 has steel and the weld part 21 extended to the radial direction of pipe fitting.First lug boss 3 is formed between at least one junction 12 to be welded and weld part 21, and weld part 21 and housing 1 are welded to connect by electric resistance welding fusing first protruding 3.
In the present embodiment, the end that housing 1 has pilot hole 11 is flat, the madial wall that junction 12 to be welded is the outside and the annular shoulder extended to the radial direction of pilot hole 11 that are formed in pilot hole 11 or lateral wall.In the present embodiment, as shown in Figure 1, junction 12 to be welded is the lateral wall of annular shoulder.But the utility model is not limited in any way this.In other embodiment, the madial wall of annular shoulder can be the madial wall of junction to be welded or annular shoulder and lateral wall is junction to be welded.
In the present embodiment, the first lug boss 3 is for being formed in the multiple salient points in junction 12 to be welded.Preferably, arrange multiple salient point to be uniformly distributed along the circumference of junction to be welded.But the utility model is not limited in any way this.In other embodiment, the shape of the first lug boss 3 can be and is formed in multiterminal arc convex tendon in junction 12 to be welded or annular convex rib, or as shown in Figure 3, annular shoulder extends to form the first lug boss 3 near the end of pilot hole to the side of annular shoulder.In other embodiment, the first lug boss 3 also can be formed in the plane that weld part 3 contacts with junction to be welded.
In the present embodiment, the first lug boss 3 is that the sidewall by extruding housing is formed, and namely corresponding with the first lug boss 3 on housing 1 position has a pit bit, as shown in Figure 1.But the utility model is not limited in any way this.In other embodiment, the mode of Vehicle Processing can be adopted formed the first lug boss.
Compared with the electric resistance welding of existing plane contact, the electric resistance welding structure of the pipe fitting that the present embodiment provides and housing by arranging the first lug boss 3 between junction 12 to be welded and weld part 21, when carrying out electric resistance welding between junction 12 to be welded and weld part 21, the position at the first lug boss 3 place has minimum contact resistance, nearly all heating current all flows through the first lug boss 3, first lug boss 3 produces a large amount of resistance heats the first lug boss 3 is melted, the first lug boss after fusing fills junction 12 to be welded and weld part 21, reduce contact resistance between the two, junction 12 to be welded and weld part 21 can be melted under less heating current.Due to electric resistance welding under less electric current, junction 12 to be welded and weld part 21 can not produce splashing when melting, and after welding, product has good outward appearance, without the need to carrying out subsequent treatment.
The height of the first lug boss 3 is higher, and cross-sectional width is wider, and welding current required during welding will be larger.In the present embodiment, the height arranging weld part 21 is more than or equal to 0.2 millimeter, is less than or equal to 2 millimeters, and the cross-sectional width of weld part 21 is more than or equal to 0.2 millimeter, is less than or equal to 3 millimeters.Preferably, the height and the width that arrange weld part 21 are 0.5 millimeter.But the utility model is not limited in any way this.
For improving the bonding strength of electric resistance welding back casing 1 and pipe fitting 2 further, the side being arranged on the first lug boss 3 is provided with solder 4, and when electric resistance welding, solder 4 melts, between welding 21 and housing 1, form solder layer.In the present embodiment, solder 4 is weld-ring.But this experiment is novel not to be limited in any way this.
In the present embodiment, weld part 21 is the integrated annular flange flange of lateral wall of pipe fitting 2.But the utility model is not limited in any way this.In other embodiment, weld part 21 can be the welding ring be welded to connect at pipe fitting lateral wall.
In the present embodiment, pipe fitting 2 is stainless steel tube.But the utility model is not limited in any way this.In other embodiment, pipe fitting 2 can be carbon steel pipe or Copper steel cladding pipe, and described Copper steel cladding pipe refers to copper pipe and the steel pipe of mutually overlap joint, or the whole liner of copper pipe or be coated at steel pipe, or by copper-steel composite material through rolling or extruded pipe fitting.
The Welding Structure of the pipe fitting that the present embodiment provides and housing is mainly used in refrigerating field, if housing is compressor liquid storage device housing, pipe fitting is compressor liquid storage device pipe arrangement, or housing is muffler shell, pipe fitting is muffler pipe arrangement, or housing is gas-liquid separator housing, pipe fitting is gas-liquid separator pipe arrangement.But the utility model is not limited in any way this.
Embodiment two
The present embodiment is with embodiment one and change substantially identical, and difference is: in the present embodiment, and housing 1 is rotary extrusion type spinning housing, and the tube wall of this kind of housing is thicker, and the end face that directly can arrange pilot hole sidewall is junction 12 to be welded, as shown in Figure 4 and Figure 5.In the present embodiment, the first lug boss 3 is formed on the end face of pilot hole sidewall.But identical with embodiment one, the first lug boss 3 can be formed in the plane that weld part 21 contacts in junction to be welded.
Embodiment three
The present embodiment is with embodiment one and change substantially identical, difference is: as shown in Figure 6, pipe fitting 2 comprises the first body 22 and the second body 23, weld part 21 comprises the first weld part 211 and the second weld part 212, the lateral wall of the butt end of the first body 22 has the first weld part 211, the lateral wall of the butt end of the second body 23 has the second weld part 212, when the first weld part 211 and the second weld part 212 are positioned at the same side of junction 12 to be welded simultaneously, between the first weld part 211 and the second weld part 212, there is the second lug boss 5.In the present embodiment, the second lug boss 5 is formed in the plane that the second weld part 212 contacts with the first weld part 211.But this practicality is not newly limited in any way this.Second lug boss 5 can be formed in the plane that the first weld part 211 contacts with the second weld part 212.
In existing refrigeration accessory, some pipe fitting is longer and comprise straight sections and bent portion.For easy to process, by straight sections and bent portion separate machined, can namely form the first body 22 and the second body 23 described in the present embodiment for this kind of pipe fitting.As shown in Figure 4, in the electric resistance welding structure of the pipe fitting that the present embodiment provides and housing, the first body 22, second body 23 and housing 1 three can weld through an electric resistance welding.First projection 3 is formed between the first body 22 and the junction to be welded 12 of housing, is specifically formed in junction 12 to be welded.But the utility model is not limited in any way this.In other embodiment, the first lug boss 3 can be formed on the first weld part 211.
First lug boss 3 reduces the contact resistance between junction 12 to be welded and the first weld part 211, second lug boss 5 reduces the contact resistance between the first weld part 211 and the second weld part 212, thus reaches the welding current that the first body 22, second body 23 and housing 1 are once welded in reduction.This setting not only reduces welding cost, simultaneously at welding current direction economize energy greatly from reduction operation aspect.
In sum, by arranging the first lug boss at housing between at least one junction to be welded and weld part, the first lug boss makes form little contact surface between junction to be welded and weld part and contact between the two closely.When to when carrying out electric resistance welding between at least one junction to be welded and weld part, the region at the first lug boss place has minimum contact resistance, nearly all electric current is all by the first lug boss, first lug boss produces larger resistance heat, first first projection melts and is filled between at least one junction to be welded and weld part, reduce contact resistance between the two, housing parts and the weld part at junction place to be welded melt gradually and weld together.Compared with the electric resistance welding of existing plane contact, arrange after the first lug boss because nearly all electric current is all by the first lug boss, and there is not the shunting of other parts, therefore littlely at less electric current can carry out electric resistance welding, not only significantly reduce welding cost.Meanwhile, the welding under small area analysis, can not produce splashing when housing and weld part fusing, greatly improve the surface quality of the rear product of welding.
Although the utility model discloses as above by preferred embodiment; but and be not used to limit the utility model; anyly know this those skilled in the art; not departing from spirit and scope of the present utility model; can do a little change and retouching, therefore protection domain of the present utility model is when being as the criterion depending on claims scope required for protection.
Claims (11)
1. an electric resistance welding structure for pipe fitting and housing, is characterized in that, comprising:
The housing of steel, housing has pilot hole and at least one junction to be welded;
Pipe fitting, is assembled by pilot hole and housing, described pipe fitting has steel and the weld part extended to the radial direction of pipe fitting;
First lug boss, be formed between at least one junction to be welded and weld part, electric resistance welding melts the first lug boss and is connected with case weld by weld part.
2. the electric resistance welding structure of pipe fitting according to claim 1 and housing, is characterized in that, junction to be welded is housing is formed in the outside of pilot hole and the madial wall of the annular shoulder extended to the radial direction of pilot hole or lateral wall.
3. the electric resistance welding structure of pipe fitting according to claim 1 and housing, is characterized in that, for rotary extrusion type spinning housing, junction to be welded is the end face of pilot hole sidewall.
4. the electric resistance welding structure of the pipe fitting according to Claims 2 or 3 and housing, is characterized in that, described first lug boss is the multiple salient points be formed in junction to be welded, multistage arc convex tendon or annular convex rib.
5. the electric resistance welding structure of pipe fitting according to claim 2 and housing, is characterized in that, the side of annular shoulder near the end of pilot hole to annular shoulder extends to form the first lug boss.
6. the electric resistance welding structure of pipe fitting according to claim 1 and housing, is characterized in that, the height of described weld part is more than or equal to 0.2 millimeter, is less than or equal to 2 millimeters, and the cross-sectional width of weld part is more than or equal to 0.2 millimeter, is less than or equal to 3 millimeters.
7. the electric resistance welding structure of pipe fitting according to claim 1 and housing, is characterized in that, the side of described first lug boss is provided with solder, and when electric resistance welding, solder fusing forms solder layer between weld part and the housing of steel.
8. the electric resistance welding structure of pipe fitting according to claim 1 and housing, is characterized in that, described weld part is be welded to connect in the welding ring of pipe fitting lateral wall or annular flange flange integrated with the lateral wall of pipe fitting.
9. the electric resistance welding structure of pipe fitting according to claim 1 and housing, it is characterized in that, described pipe fitting comprises the first body and the second body, weld part comprises the first weld part and the second weld part, the lateral wall of the butt end of the first body has the first weld part, the lateral wall of the butt end of the second body has the second weld part, when the first weld part and the second weld part are positioned at the same side of junction to be welded simultaneously, has the second lug boss between the first weld part and the second weld part.
10. the electric resistance welding structure of pipe fitting according to claim 1 and housing, is characterized in that, described pipe fitting is carbon steel pipe, stainless steel tube or Copper steel cladding pipe.
The electric resistance welding structure of 11. pipe fittings according to claim 1 and housing, it is characterized in that, described housing is compressor liquid storage device housing, pipe fitting is compressor liquid storage device pipe arrangement, or housing is muffler shell, pipe fitting is muffler pipe arrangement, or housing is gas-liquid separator housing, and pipe fitting is gas-liquid separator pipe arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520679654.1U CN204934897U (en) | 2015-09-02 | 2015-09-02 | The electric resistance welding structure of pipe fitting and housing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520679654.1U CN204934897U (en) | 2015-09-02 | 2015-09-02 | The electric resistance welding structure of pipe fitting and housing |
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| CN204934897U true CN204934897U (en) | 2016-01-06 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537883A (en) * | 2016-02-05 | 2016-05-04 | 广州鸿民实业有限公司 | Manufacturing technology for muffler |
| CN106270992A (en) * | 2016-09-02 | 2017-01-04 | 广州亨龙智能装备股份有限公司 | Fire fighting bottle resistance-welding process |
| CN108730665A (en) * | 2017-04-17 | 2018-11-02 | 新昌县四通机电有限公司 | A kind of muffler assembly |
| US10928108B2 (en) | 2012-09-13 | 2021-02-23 | Emerson Climate Technologies, Inc. | Compressor assembly with directed suction |
| US11236748B2 (en) | 2019-03-29 | 2022-02-01 | Emerson Climate Technologies, Inc. | Compressor having directed suction |
| US11248605B1 (en) | 2020-07-28 | 2022-02-15 | Emerson Climate Technologies, Inc. | Compressor having shell fitting |
| US11619228B2 (en) | 2021-01-27 | 2023-04-04 | Emerson Climate Technologies, Inc. | Compressor having directed suction |
| US11767838B2 (en) | 2019-06-14 | 2023-09-26 | Copeland Lp | Compressor having suction fitting |
-
2015
- 2015-09-02 CN CN201520679654.1U patent/CN204934897U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10928108B2 (en) | 2012-09-13 | 2021-02-23 | Emerson Climate Technologies, Inc. | Compressor assembly with directed suction |
| US10995974B2 (en) | 2012-09-13 | 2021-05-04 | Emerson Climate Technologies, Inc. | Compressor assembly with directed suction |
| CN105537883A (en) * | 2016-02-05 | 2016-05-04 | 广州鸿民实业有限公司 | Manufacturing technology for muffler |
| CN106270992A (en) * | 2016-09-02 | 2017-01-04 | 广州亨龙智能装备股份有限公司 | Fire fighting bottle resistance-welding process |
| CN108730665A (en) * | 2017-04-17 | 2018-11-02 | 新昌县四通机电有限公司 | A kind of muffler assembly |
| US11236748B2 (en) | 2019-03-29 | 2022-02-01 | Emerson Climate Technologies, Inc. | Compressor having directed suction |
| US11767838B2 (en) | 2019-06-14 | 2023-09-26 | Copeland Lp | Compressor having suction fitting |
| US11248605B1 (en) | 2020-07-28 | 2022-02-15 | Emerson Climate Technologies, Inc. | Compressor having shell fitting |
| US11619228B2 (en) | 2021-01-27 | 2023-04-04 | Emerson Climate Technologies, Inc. | Compressor having directed suction |
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