CN209867172U - Flaring device - Google Patents
Flaring device Download PDFInfo
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- CN209867172U CN209867172U CN201822246054.2U CN201822246054U CN209867172U CN 209867172 U CN209867172 U CN 209867172U CN 201822246054 U CN201822246054 U CN 201822246054U CN 209867172 U CN209867172 U CN 209867172U
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- section
- flaring
- straight tube
- hole
- straight
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Abstract
The utility model discloses a flaring device, including the preceding tip, main part and the back tip that connect gradually, preceding tip includes flaring section and guide part, the flaring section divide into first straight tube section, second straight tube section and flaring cup section, the diameter of second straight tube section is less than the diameter of first straight tube section, first straight tube section with the guide part is connected, second straight tube section with the flaring cup section is connected; the utility model discloses a flaring ware has shortened the straight tube section of fin type heat exchanger expand tube flaring ware, reduces the area of contact of straight tube section and copper pipe to reduced the resistance that the copper pipe received at the expand tube in-process, solved the copper pipe and aroused the copper pipe easily because of the too big quality problems such as deformation, fracture, opening of resistance that receives, and the size that enables the flaring cup satisfies the drawing design requirement.
Description
Technical Field
The utility model relates to an air conditioning unit finned heat exchanger especially involves an expander.
Background
The air conditioner in the prior art generally adopts a fin heat exchanger to improve the performance of the air conditioner, the fin heat exchanger is formed by welding a plurality of U-shaped copper pipes after the U-shaped copper pipes are inserted into fins, but the diameter of the U-shaped copper pipes is smaller than that of small holes on the fins, and gaps exist between the U-shaped copper pipes and the small holes of the fins, so that the U-shaped copper pipes are tightly attached to the fins through expanding pipes when the U-shaped copper pipes are inserted into the fins, so that the maximum heat transfer efficiency is achieved, and the ports of the U-shaped copper pipes are correspondingly welded, so that a coil pipe is formed. In order to facilitate welding and avoid loss of welding flux during welding, a U-shaped port needs to be flared, and the U-shaped port is in a horn mouth shape, but in the prior art, a traditional flaring device is generally adopted, and in the existing flaring device structure, in the flaring process of a finned heat exchanger expanding tube, the resistance is too large, so that the quality problems of copper tubes, such as cracking of a copper tube mouth, bending and deformation of an opening and the other end of the copper tube, are easily caused during flaring of the expanding tube, and the finned heat exchanger can be normally used after complex repair is needed, so that the working efficiency is reduced, the service life of the finned heat exchanger is also shortened, and the existing flaring device needs to be structurally improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a flaring ware designs a straight line groove at flaring ware straight tube section back end, shortens the straight tube section of fin type heat exchanger expand tube flaring ware to reduce the resistance of expand tube flaring in-process, solve the copper pipe quality problems such as flexible, deformation, fracture, opening.
The utility model provides a flaring ware, including preceding tip, main part and the back tip that connects gradually, preceding tip includes flaring section and guide part, the flaring section divide into first straight tube section, second straight tube section and flaring cup section, the diameter of second straight tube section is less than the diameter of first straight tube section, first straight tube section with the guide part is connected, second straight tube section with the flaring cup section is connected.
Further, the second straight pipe section is of a cylindrical structure and is used for reducing the contact area between the straight pipe section of the tube expander and the copper pipe of the fin heat exchanger and reducing the resistance of the copper pipe in the tube expansion and flaring process.
Further, the length ratio of the second straight pipe section to the first straight pipe section is 3: 1-2.
Further, the flaring cup section is divided into a third straight pipe section and a first transition section, the third straight pipe section is connected with the main body, and the second straight pipe section is connected with the first transition section.
Furthermore, a second transition section is arranged at the joint of the first straight pipe section and the second straight pipe.
Furthermore, a first through hole and a second through hole are arranged in the flaring device, the diameter of the first through hole is smaller than that of the second through hole, the first through hole is communicated with the second through hole, and the first through hole and the second through hole are used for being connected with an external expansion rod.
Furthermore, a step hole is further formed between the first through hole and the second through hole and used for being connected with external equipment to be positioned.
Further, the rear end portion comprises a tool withdrawal groove and a tail end portion, the tool withdrawal groove is of a cylindrical structure and is connected with the main body, and the diameter of the tool withdrawal groove is smaller than that of the main body.
Further, the tail end portion is connected with the tool withdrawal groove, and the diameter of the tail end portion is larger than that of the tool withdrawal groove and smaller than that of the main body.
Further, the front end, the main body and the rear end of the flaring device are of an integrally formed structure.
The utility model discloses a novel flaring ware has shortened the straight tube section of finned heat exchanger expander flaring ware, reduces the area of contact of straight tube section and copper pipe to reduced the resistance that the copper pipe received at the expand tube in-process, solved the copper pipe and arouse the copper pipe easily because of the too big quality problems such as resistance that receives are crooked, be out of shape, fracture, opening, avoided the finned heat exchanger to carry out the phenomenon that complicated reprocessed could normal use, and improved work efficiency, and shorten flaring ware straight tube section, the size that can also make the flaring cup satisfies the drawing design requirement.
Drawings
FIG. 1 is a schematic view of the structure of the flaring device of the present invention;
fig. 2 is a schematic view of an embodiment of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly, and the connection may be a direct connection or an indirect connection.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, the utility model provides a flaring device, including the preceding tip 1, main part 2 and the rear end 3 that connect gradually, preceding tip 1 includes flaring section 11 and guide part 4, and the flaring section divide into first straight tube section 6, second straight tube section 7 and flaring cup section 5, and the diameter of second straight tube section is less than the diameter of first straight tube section, and first straight tube section is connected with the guide part, and second straight tube section is connected with the flaring cup section, the utility model discloses design fluting at straight tube section rear end, the straight tube section of reducing the flaring device reduces the area of contact of straight tube section and copper pipe to reduce the resistance that the copper pipe received in the expand tube process; the first straight pipe section is connected with the guide part so as to ensure that the copper pipe can smoothly transit from the guide part to the first straight pipe section; the utility model discloses set up the guide part, the guide part can further improve the accuracy that the copper pipe emboliaed the front end guide part.
The second straight pipe section of the utility model is a cylinder structure, and the length ratio of the second straight pipe section to the first straight pipe section is 3: 1-2. The second straight pipe section can reduce the contact area between the straight pipe section of the tube expander and the copper pipe of the fin heat exchanger, reduce the resistance of the copper pipe in the tube expansion and flaring process, occupy more straight pipe section areas and greatly reduce the contact range between the straight pipe section and the copper pipe.
The flaring cup section divide into third straight tube section 50, first changeover portion 51, third straight tube section and body coupling, the second straight tube section is connected with first changeover portion, because the diameter at first straight tube section is greater than the diameter of second straight tube section, so when advancing the flaring ware in the copper pipe, the second straight tube section is not direct contact to the copper pipe, and the second straight tube section is connected with first changeover portion, when the copper pipe tip passes through first straight tube section, the second straight tube section, when contacting with the flaring cup section, expand the copper pipe tip through first changeover portion, thereby guarantee the bell mouth shaping of copper pipe tip. The second transition section is arranged at the joint of the first straight pipe section and the second straight pipe, after the expanding pipe flaring process is completed, the second transition section can enable the second straight pipe section not to contact the copper pipe, a gap is formed between the second straight pipe section and the copper pipe, the copper pipe is prone to sinking, and when the expander is pulled out, the second transition section can restore the sinking position of the copper pipe, so that the phenomenon that the copper pipe sinks is prevented.
In order to further optimize the technical scheme in the above embodiment, as is well known to those skilled in the art, in the process of expanding the tube of the heat exchanger of the air conditioner, a copper tube of the heat exchanger is required to be expanded to enable the copper tube to be tightly attached to the fin, and then pressure is further applied to the port of the copper tube to complete the preparation of the bell mouth. At present, the structure of the flaring device has overlarge resistance in the flaring process of the finned heat exchanger expanding tube, and the resistance of the copper tube cannot be reduced, so that the tube bending quality problems of cracking of the copper tube opening, bending and deformation of the opening and the other end of the copper tube are easily caused during flaring of the expanding tube. Specifically as shown in fig. 2, in the pipe expanding process, the expander moves downwards rapidly, when the expander collides with the inner wall of the copper pipe, the first straight pipe section is in direct contact with the pipe wall of the copper pipe, the larger the contact area is, the larger the resistance received by the copper pipe is, the second straight pipe section is arranged, the diameter of the second straight pipe section is smaller than that of the first straight pipe section, the second straight pipe section cannot be in contact with the pipe wall of the copper pipe, but a gap can exist, the gap just reduces the resistance received by the copper pipe for buffering, and therefore bending and deformation of the copper pipe are effectively avoided.
Set up first through-hole in the flaring ware, the second through-hole, first through-hole diameter is less than the second through-hole, first through-hole and second through-hole intercommunication, first through-hole is used for being connected with outside expander roll, the second through-hole is used for being connected with outside positioning device, outside expander roll gets into the flaring ware from the flaring ware guide part, outside positioning device gets into the flaring ware from flaring ware heel, be close to front position at the flaring ware main part, first through-hole and second through-hole junction, be provided with the step hole, be used for connecting outside positioning device, and be connected with outside expander roll, improve the concentricity of expander roll.
The rear end part of the flaring device comprises a tool withdrawal groove and a tail end part, the tool withdrawal groove is of a cylindrical structure and is connected with the main body, the diameter of the tool withdrawal groove is smaller than that of the main body, the tail end part of the flaring device is connected with the tool withdrawal groove, and the diameter of the tail end part is larger than that of the tool withdrawal groove and smaller than that of the main body.
The front end, the main body and the rear end of the flaring device are integrally formed. When the expand tube flaring, the flaring ware is with copper pipe direct contact's part, and wearing and tearing consumption is big, the utility model discloses a flaring ware adopts 65Mn material integrated into one piece to make, when carrying out expand tube flaring technology, the flaring ware is difficult for wearing and tearing, long service life.
The utility model discloses an improvement to the straight tube section of flaring section sets up first straight tube section and second straight tube section at the straight tube section, and the diameter of second straight tube section is less than the diameter of first straight tube section. The utility model discloses a novel flaring ware has shortened the straight tube section of finned heat exchanger expander flaring ware, reduces the area of contact of straight tube section and copper pipe to reduced the resistance that the copper pipe received at the expand tube in-process, solved the copper pipe and arouse the copper pipe easily because of the too big quality problems such as resistance that receives are crooked, be out of shape, fracture, opening, avoided the finned heat exchanger to carry out the phenomenon that complicated reprocessed could normal use, and improved work efficiency, and shorten flaring ware straight tube section, the size that can also make the flaring cup satisfies the drawing design requirement.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A flaring device comprises a front end part, a main body and a rear end part which are sequentially connected, wherein the front end part comprises a flaring section and a guide part, and is characterized in that the flaring section is divided into a first straight pipe section, a second straight pipe section and a flaring cup section, the diameter of the second straight pipe section is smaller than that of the first straight pipe section, the first straight pipe section is connected with the guide part, and the second straight pipe section is connected with the flaring cup section; the rear end part comprises a tool withdrawal groove and a tail end part, the tool withdrawal groove is of a cylindrical structure and is connected with the main body, and the diameter of the tool withdrawal groove is smaller than that of the main body.
2. The expander according to claim 1, wherein the second straight tube section is of a cylindrical structure, and the second straight tube section is used for reducing the contact area between the straight tube section of the expander and the copper tube of the fin heat exchanger and reducing the resistance of the copper tube in the expanding process of the expander.
3. The expander according to claim 1, wherein the ratio of the length of said second straight section to the length of said first straight section is 3: 1-2.
4. The expander according to claim 1, wherein said expander cup section is divided into a third straight tube section, said third straight tube section being connected to said main body, a first transition section, said second straight tube section being connected to said first transition section.
5. The flare according to claim 1, wherein a second transition section is provided between the first straight tube section and the second straight tube.
6. The expander according to claim 1, wherein a first through hole and a second through hole are provided in said expander, said first through hole having a smaller diameter than said second through hole, said first through hole communicating with said second through hole, said first through hole and said second through hole being adapted for connection to an external expansion rod.
7. The flaring device of claim 6, wherein a stepped hole is further provided between said first through hole and said second through hole, said stepped hole being adapted to be positioned for connection with an external device.
8. The flaring device of claim 1, wherein said tail end is connected to said relief groove, said tail end having a diameter greater than said relief groove and less than said main body.
9. The flare apparatus of claim 1 wherein the front end, the body and the rear end of the flare apparatus are of unitary construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822246054.2U CN209867172U (en) | 2018-12-27 | 2018-12-27 | Flaring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822246054.2U CN209867172U (en) | 2018-12-27 | 2018-12-27 | Flaring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209867172U true CN209867172U (en) | 2019-12-31 |
Family
ID=68949922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822246054.2U Expired - Fee Related CN209867172U (en) | 2018-12-27 | 2018-12-27 | Flaring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209867172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113084019A (en) * | 2020-01-09 | 2021-07-09 | 重庆华超金属有限公司 | Expansion joint process and expansion joint structure |
-
2018
- 2018-12-27 CN CN201822246054.2U patent/CN209867172U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113084019A (en) * | 2020-01-09 | 2021-07-09 | 重庆华超金属有限公司 | Expansion joint process and expansion joint structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191231 Termination date: 20211227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |