CN112460345A - Pipe fitting connecting structure, silencer and pipe fitting connecting method - Google Patents
Pipe fitting connecting structure, silencer and pipe fitting connecting method Download PDFInfo
- Publication number
- CN112460345A CN112460345A CN201910844785.3A CN201910844785A CN112460345A CN 112460345 A CN112460345 A CN 112460345A CN 201910844785 A CN201910844785 A CN 201910844785A CN 112460345 A CN112460345 A CN 112460345A
- Authority
- CN
- China
- Prior art keywords
- diameter
- barrel
- pipe
- connecting sleeve
- connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
- F16L13/0209—Male-female welded joints
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
The invention relates to the technical field of refrigeration, and discloses a pipe connecting structure, a silencer and a pipe connecting method, wherein the pipe connecting structure comprises a connecting part (2) and a connecting sleeve (3), the connecting part (2) is made of stainless steel, the connecting sleeve (3) is made of copper, the connecting sleeve (3) comprises a barrel (31) which is mostly positioned in the connecting part (2), a protruding part (34) is arranged on the inner wall surface of the barrel (31) and used for positioning and installing a pipeline part in the connecting sleeve (3), an outer groove (35) is also arranged on the outer wall surface of the barrel (31) positioned in the connecting part (2), and solder is arranged in a space in the outer groove (35). According to the invention, the outer groove is used for placing the welding flux to be welded with the connecting part, the space formed between the outer groove and the connecting part is less in contact with air, the possibility of generating welding line corrosion is avoided in the welding process, and the integral welding strength is improved.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a pipe fitting connecting structure, a silencer and a pipe fitting connecting method.
Background
Products in the refrigeration technology field include household air conditioners, refrigerators, freezers and the like, generally, copper pipes are used as connecting pipes for connecting two parts of the systems, and in order to be conveniently connected with the copper pipes, a plurality of parts are correspondingly made of copper materials. Such as a liquid receiver or a muffler (liquid receiver muffler) is an essential part of a refrigeration system, in which the system can be used as a liquid receiver for storing excess refrigerant in the system; the silencer can also be used as a silencer to ensure that the airflow passes through the silencer and effectively reduce the noise.
The liquid storage silencer commonly used in the prior art comprises a section of cylinder with a larger diameter, and an air inlet pipe orifice and an air outlet pipe orifice which are welded at two ends of the cylinder and have smaller diameters. The cylinder, the air inlet pipe orifice and the air outlet pipe orifice of the liquid storage silencer of the traditional device are all made of copper pipes, the price of copper materials is high, so that the cost of the liquid storage silencer is higher, and the surface of the liquid storage silencer made of copper materials is often cleaned through an acid washing process after welding, so that the influence on the environment is great.
Chinese patent CN103791196A discloses a liquid storage silencer, which replaces the materials of the cylinder, the air inlet pipe orifice and the air outlet pipe orifice of the liquid storage silencer with stainless steel materials from copper, in order to solve the welding problem between two different materials of stainless steel and copper, the welding flux in the patent must be placed by using a bushing and a step between the welding flux and the inner orifice of the silencer, and the inner orifice of the silencer must be provided with a step. Although the above structure can solve the problem of welding between the cylinder and the stainless steel material, the wall thickness of the stainless steel pipe is generally not more than 1mm, and it is very difficult to process a thin wall.
Disclosure of Invention
The invention aims to provide a pipe fitting connecting structure aiming at the problem of connection between two pipe fittings made of different materials in the prior art.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a pipe fitting connection structure, including connecting portion and connecting sleeve, connecting portion are stainless steel material, connecting sleeve is the copper product, connecting sleeve includes that the majority is located the barrel of connecting portion, the bellying has been seted up on the inner wall surface of barrel for with pipeline spare fixed-position mounting in connecting sleeve, the outer wall surface that is located the barrel of connecting portion has still seted up outer recess, and the space in outer recess has the solder.
Further, the convex part and the outer groove are positioned in the same radial direction of the cylinder body.
Furthermore, a flange is arranged on the barrel body outside the connecting part, and the flange is matched with the end part of the connecting part and used for axial positioning.
Preferably, the shape of the flanging is a plane and is perpendicular to the axis of the connecting sleeve.
Preferably, the shape of the flanging is a conical surface, and the diameter of the flanging is linearly increased along the direction away from the connecting sleeve.
Furthermore, knurling is arranged on the surface of the outer wall of the connecting sleeve.
Preferably, the barrel (31) is divided into two sections by taking the convex part or/and the outer groove as starting points, wherein the diameter of the section extending towards the outside of the connecting part is D2, the diameter of the section extending towards the inside of the connecting part is D1, the outer wall surface of the barrel (31) part with the diameter of D2 is provided with knurling, and the outer wall surface of the barrel (31) part with the diameter of D1 is not provided with knurling.
Preferably, the diameter D2 is smaller than the diameter D1, and the fit between the barrel (31) with the diameter D1 and the connecting part is an interference fit.
Another object of the present invention is to provide a muffler including the pipe connecting structure.
The invention also provides a pipe fitting connecting method, which comprises the following steps:
s1, presetting annular solder in the space of the outer groove to enable the solder to be retained in the outer groove;
s2, pressing the connecting sleeve into the connecting part to enable the outer groove and the inner wall of the connecting part to form an accommodating part for accommodating welding flux;
s3, welding by adopting high-frequency welding or furnace welding, wherein the molten welding flux is full of the gap space between the connecting part and the connecting sleeve due to the capillary action, so that the two parts are solidified;
the connecting sleeve in the S2 is matched with the end part of the connecting part through the flanging for axial positioning, and the barrel body part with the diameter of D1 is in interference fit with the connecting part.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the barrel is respectively provided with the convex part and the outer groove, and the pipeline part is positioned through the convex part, so that compared with the mode that the inner wall of the barrel is processed into the positioning step, the convex part is simpler to process; the outer groove is used for placing the welding flux to be welded with the connecting part, the space formed between the outer groove and the connecting part is less in contact with air, the possibility of generating welding line corrosion is avoided in the welding process, and the overall welding strength is improved.
In order to further improve the welding effect of two different materials, the surface of the outer wall of the connecting sleeve is also provided with knurls, and the knurls are arranged to facilitate the penetration of welding flux in the direction of the outer wall of the connecting sleeve and the inner wall of the connecting part; in order to allow the solder to permeate in a single direction, the barrel body at one end of the outer groove is provided with knurls, the barrel body at the other end is not provided with the knurls, and the barrel body without the knurls is in interference fit with the connecting part.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of a pipe connection structure in example 1.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a schematic view of a second flange structure of embodiment 1.
FIG. 4 is a schematic view of the barrel of example 1 having the diameters D1 and D2.
Wherein, 1-body, 2-connecting part, 3-connecting sleeve, 31-cylinder, 32-flanging, 34-convex part, 35-external groove.
Detailed Description
The present invention will be further described with reference to the following detailed description, wherein the drawings are provided for illustrative purposes only and are not intended to be limiting; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1-2, the present embodiment provides a pipe connection structure, including connecting portion 2 and connecting sleeve 3, connecting portion 2 is stainless steel material, connecting sleeve 3 is copper material, connecting sleeve 3 includes the barrel 31 that most is located connecting portion 2, protruding portion 34 has been seted up on the inner wall surface of barrel 31 for with pipeline spare location installation in connecting sleeve 3, outer recess 35 has still been seted up on the outer wall surface of the barrel 31 that is located connecting portion 2, and the space in outer recess 35 has the solder.
Wherein, connecting portion 2 is located 1 both ends of body and is used for supplying liquid inflow and outflow in this embodiment, and connecting portion 2 specifically can adopt the stainless steel mouth of pipe, and connecting sleeve 3 specifically can adopt the copper bush. The connecting sleeve 3 can be arranged at the connecting part 2 at one end or two ends of the body 1, namely, the connecting sleeve can be arranged at the inflow port or/and the outflow port according to actual needs.
Through the scheme, the barrel 31 is respectively provided with the convex part 34 and the outer groove 35, the pipeline part (such as a copper pipe) is positioned through the convex part 34, and compared with the mode that the inner wall of the barrel 31 is processed into a positioning step, the processing by adopting the convex part 34 is simpler; the outer groove 35 is used for placing welding flux to be welded with the connecting part 2, the space formed between the outer groove 35 and the connecting part 2 is small in contact with air, the possibility of generating welding line corrosion is avoided in the welding process, and the overall welding strength is improved.
In the present embodiment, the structure of the protruding portion 34 is various, for example, a plurality of inner protruding points annularly arranged on the inner wall of the cylinder 31 or an inner protruding ring annularly arranged on the inner wall of the cylinder 31.
As a preferable scheme of this embodiment, the protruding portion 34 is an inner annular ring annularly arranged on the inner wall of the cylinder 31, the inner annular ring and the outer groove 35 are located in the same radial direction of the cylinder 31, and by the above scheme, the inner annular ring and the outer groove 35 are correspondingly arranged in the same radial direction of the cylinder 31, which is more convenient for processing.
In consideration of the limitation of the connecting sleeve 3 in the connecting part 2, the present embodiment is provided with a flange 32 on the cylinder 31 outside the connecting part 2, and the flange 32 is matched with the end of the connecting part 2 for axial positioning. The flange satisfying the above conditions may have various structures, as shown in fig. 2, the shape of the flange 32 is a plane perpendicular to the axis of the connecting sleeve 3, and as shown in fig. 3, the shape of the flange 32 is a conical surface, and the diameter increases linearly in a direction away from the connecting sleeve 3. Wherein the conical surface is easier to machine than a flat surface, the specific form to be selected is determined by the person skilled in the art according to the actual situation.
In order to further improve the welding effect and facilitate the penetration of the solder in the outer groove 35 toward the outer wall of the connecting sleeve 3 and the inner wall of the connecting portion 2, the outer wall surface of the connecting sleeve 3 is further provided with knurls (not shown in the figure).
It should be noted here that the solder in the outer groove 35 can penetrate to one end or both ends, and if the solder penetrates to both ends at the same time, the penetration of the solder is not clear, and the soldering quality cannot be guaranteed. Therefore, in order to solve the above problems and ensure that the solder can permeate in one direction, as shown in fig. 4, in this embodiment, the cylindrical body 31 is divided into two sections by using the protruding portion 34 or/and the outer groove 35 as starting points, wherein the diameter of the section extending outward of the connecting portion 2 is D2, the diameter of the section extending inward of the connecting portion 2 is D1, the outer wall surface of the portion of the cylindrical body 31 with the diameter of D2 is provided with knurls, and the outer wall surface of the portion of the cylindrical body 31 with the diameter of D1 is not provided with knurls.
Similarly, in the present embodiment, the diameter D2 may be set to be smaller than the diameter D1, and the fitting between the cylindrical body 31 portion with the diameter D1 and the connection portion 2 is an interference fit, by adopting the above scheme, the penetration of the solder in the outer groove 35 to the gap between the cylindrical body 31 portion with the diameter D1 and the connection portion 2 is further reduced by adopting the interference fit.
The embodiment also provides a silencer, the silencer includes above-mentioned pipe fitting connection structure.
The embodiment also provides a pipe fitting connecting method of the pipe fitting connecting structure, which comprises the following steps:
s1, presetting annular solder in the space of the outer groove 35 to enable the solder to be retained in the outer groove 35;
s2, pressing the connecting sleeve 3 into the connecting part 2, so that the outer groove 35 and the inner wall of the connecting part 2 form an accommodating part for accommodating welding flux;
s3, welding by adopting high-frequency welding or furnace welding, wherein the molten welding flux is full of the gap space between the connecting part 2 and the connecting sleeve 3 due to the capillary action, so that the two parts are solidified;
the welding ring can be adopted as the welding material in the S1, the connecting sleeve 3 is matched with the end part of the connecting part 2 through the flanging 32 in the S2 for axial positioning, and the interference fit is adopted as the fit between the part, with the diameter D1, of the cylinder body 31 and the connecting part 2.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. The utility model provides a pipe fitting connection structure, includes connecting portion (2) and connecting sleeve (3), connecting portion (2) are stainless steel material, connecting sleeve (3) are copper material, its characterized in that, connecting sleeve (3) include barrel (31) that the majority is located connecting portion (2), annular bellying (34) have been seted up on the inner wall surface of barrel (31) for with pipeline spare fixed position mounting in connecting sleeve (3), outer recess (35) that set up annular bellying (34) and form simultaneously are still seted up to the outer wall surface of barrel (31) that is located connecting portion (2) to space in outer recess (35) has the solder.
2. A pipe connecting structure according to claim 1, wherein the projection (34) and the outer groove (35) are located in the same radial direction of the cylinder (31).
3. A pipe connection according to claim 1, characterised in that a flange (32) is provided on the cylinder (31) outside the connection part (2), said flange (32) cooperating with the end of the connection part (2) for axial positioning.
4. A pipe connection according to claim 3, characterized in that the flange (32) is shaped as a plane perpendicular to the axis of the connection sleeve (3).
5. A pipe connection according to claim 3, characterized in that the flange (32) is conical in shape, the diameter increasing linearly in a direction away from the connection sleeve (3).
6. A pipe connecting structure according to any one of claims 1 to 5, wherein the outer wall surface of the connecting sleeve (3) is knurled.
7. A tube connection according to claim 6, characterized in that the barrel (31) is divided into two sections starting from the protrusion (34) and/or the outer groove (35), wherein the diameter of the section extending outwardly of the connection portion (2) is D2, the diameter of the section extending inwardly of the connection portion (2) is D1, the outer wall surface of the portion of the barrel (31) having the diameter D2 is knurled, and the outer wall surface of the portion of the barrel (31) having the diameter D1 is not knurled.
8. A tubular connection according to claim 7, characterized in that the diameter D2 is smaller than the diameter D1, and the fit between the portion of the cylindrical body (31) with the diameter D1 and the connection portion (2) is an interference fit.
9. A silencer including the pipe connecting structure according to any one of claims 1 to 8.
10. A method of connecting pipe elements, comprising the steps of:
s1, presetting annular solder in the space of the outer groove (35) to enable the solder to be retained in the outer groove (35);
s2, pressing the connecting sleeve (3) into the connecting part (2) to enable the outer groove (35) and the inner wall of the connecting part (2) to form an accommodating part for accommodating welding flux;
s3, welding by adopting high-frequency welding or furnace welding, wherein the molten welding flux is full of the gap space between the connecting part (2) and the connecting sleeve (3) due to the capillary action, so that the two parts are solidified;
the connecting sleeve (3) in the S2 is matched with the end part of the connecting part (2) through the flanging (32) for axial positioning, and the cylinder (31) with the diameter of D1 is matched with the connecting part (2) in an interference fit mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910844785.3A CN112460345A (en) | 2019-09-07 | 2019-09-07 | Pipe fitting connecting structure, silencer and pipe fitting connecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910844785.3A CN112460345A (en) | 2019-09-07 | 2019-09-07 | Pipe fitting connecting structure, silencer and pipe fitting connecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112460345A true CN112460345A (en) | 2021-03-09 |
Family
ID=74807810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910844785.3A Withdrawn CN112460345A (en) | 2019-09-07 | 2019-09-07 | Pipe fitting connecting structure, silencer and pipe fitting connecting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112460345A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2445166Y (en) * | 2000-09-26 | 2001-08-29 | 上海奥申机械有限公司 | Pipeline suitable for different metal welding |
| JP2003185297A (en) * | 2001-12-21 | 2003-07-03 | Denso Corp | Tank structure and heat exchanger for refrigerator |
| CN104625308A (en) * | 2014-12-18 | 2015-05-20 | 林春雪 | Reverse osmosis welding method |
| CN105135096A (en) * | 2015-08-02 | 2015-12-09 | 新昌县佛城制冷有限公司 | Connecting pipe for accessories on refrigeration plant |
| CN205606020U (en) * | 2016-04-08 | 2016-09-28 | 嵊州市致远焊接制品有限公司 | Last connection outer tube of air conditioning equipment |
| CN207335238U (en) * | 2017-07-11 | 2018-05-08 | 浙江盾安机械有限公司 | A kind of gas-liquid separator |
| CN207813859U (en) * | 2018-01-04 | 2018-09-04 | 嵊州市新起点焊接科技有限公司 | A kind of suction conduit assembly for connect compressor and liquid storage device |
-
2019
- 2019-09-07 CN CN201910844785.3A patent/CN112460345A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2445166Y (en) * | 2000-09-26 | 2001-08-29 | 上海奥申机械有限公司 | Pipeline suitable for different metal welding |
| JP2003185297A (en) * | 2001-12-21 | 2003-07-03 | Denso Corp | Tank structure and heat exchanger for refrigerator |
| CN104625308A (en) * | 2014-12-18 | 2015-05-20 | 林春雪 | Reverse osmosis welding method |
| CN105135096A (en) * | 2015-08-02 | 2015-12-09 | 新昌县佛城制冷有限公司 | Connecting pipe for accessories on refrigeration plant |
| CN205606020U (en) * | 2016-04-08 | 2016-09-28 | 嵊州市致远焊接制品有限公司 | Last connection outer tube of air conditioning equipment |
| CN207335238U (en) * | 2017-07-11 | 2018-05-08 | 浙江盾安机械有限公司 | A kind of gas-liquid separator |
| CN207813859U (en) * | 2018-01-04 | 2018-09-04 | 嵊州市新起点焊接科技有限公司 | A kind of suction conduit assembly for connect compressor and liquid storage device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107314168B (en) | Pipe fitting connecting structure and stainless steel pipe fitting connecting structure | |
| CN102338517B (en) | Manufacturing process of stainless steel liquid reservoir | |
| CN101235932A (en) | Connecting pipe between air-conditioner compressor outer housing and liquid reservoir and its welding method | |
| CN102338253B (en) | Stainless steel pipeline element for refrigeration system and manufacture process thereof | |
| CN101025241A (en) | Non-welded copper-aluminium tube for air conditioner and mfg, method | |
| WO2012122842A1 (en) | Method for preparing copper-aluminum welded joint of capillary and sleeved copper-end aluminum capillary | |
| CN211039983U (en) | Pipe fitting connection structure and muffler | |
| CN112460345A (en) | Pipe fitting connecting structure, silencer and pipe fitting connecting method | |
| CN209354799U (en) | A kind of pipe fitting joint structure, a kind of muffler, a kind of air-conditioning system and a kind of refrigeration system | |
| EP4283220A1 (en) | Gas collecting pipe assembly | |
| CN211039984U (en) | Pipe fitting connection structure and muffler | |
| CN211059574U (en) | Joint structure of refrigerant pipe | |
| CN203162424U (en) | Noise eliminator | |
| CN215981360U (en) | Three-way pipe and air conditioning system using same | |
| CN214248583U (en) | Pipe assembly connecting structure | |
| CN211738386U (en) | Improved silencer | |
| CN220506088U (en) | Copper aluminum pipe assembly | |
| CN220366068U (en) | Connecting pipe assembly | |
| CN102401195A (en) | Stainless steel reducing pipe and machining method thereof | |
| CN219141170U (en) | Shunt and refrigerating system with same | |
| CN210266379U (en) | Pipe fitting connection structure, silencer, air conditioning system and refrigerating system | |
| CN204187899U (en) | A kind of compressor liquid storage device | |
| CN204877871U (en) | Blast pipe and compressor | |
| CN211145648U (en) | Welding-free connecting pipe joint | |
| CN216977224U (en) | Stirling type refrigerator housing assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210309 |