Port flaring tool for long U-shaped pipe of air conditioner heat exchanger
By designing a long U-tube port flaring tooling for air-conditioning heat exchangers including flaring cones and 45-degree bevel links, the existing tooling is solved by solving the problem of overtight or inclination that is prone to when the small elbow is connected to the U-tube cup port, improving the quality of welds and sealing performance, and reducing leakage risks.
Patent Information
- Application Number
- CN202421741388.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-22
AI Technical Summary
When the port flaring tooling of the existing air conditioner heat exchanger is connected to the U-tube cup port, it is easy to have too small one-side gap, too tight or inclined, resulting in insufficient solder melting depth, causing refrigerant to leak at the connection between the elbow and the U-tube cup port, affecting the refrigerant performance.
A port flaring tool for a long U-tube of an air-conditioning heat exchanger is designed, including a positioning seat, a connecting rod, a first extension rod, a flaring cone, a second extension rod, a guide head, a cup end and a flare mouth. The flaring cone is installed by welding between the first extension rod and the second extension rod, and the tapered cone area is designed to be larger than the tapered cone area on the upper part of the flaring cone, and a 45-degree oblique angle is provided at the bottom of the connecting rod to improve the taper and opening area of the cup mouth end.
The tooling can effectively adapt to the connection between the cup port end and the elbow, avoid the poor solder sealing performance caused by single-sided too tight or tilting, improve the quality of the weld, reduce the hidden dangers of system leakage, and simplify the operation process.
Smart Images
Figure CN222970795U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air conditioner installation, and more specifically, to a port flaring tool for the long U-shaped tube of an air conditioner heat exchanger. Background Art
[0002] At present, the port flaring tools for the long U-shaped tubes on heat exchangers in the air conditioner industry basically adopt the following method: the bottom end is conical or pointed, and the flaring part is a cylindrical flaring tool, and the cup mouths of the two long U-shaped tubes flared out are also cylindrical.
[0003] In the subsequent process: a small elbow needs to be welded in the cup mouth. The designed total clearance between the outer surface of the elbow and the cup mouth is generally 0.16 - 0.2 MM, and the unilateral clearance is about 0.08 - 0.1 MM. Due to the central processing tolerance or even over-tolerance in the processing of the small elbow or the flaring of the cup mouth, it is easy to cause the phenomenon that the unilateral clearance is too small, the fit is too tight, or the small elbow is inclined after the small elbow is inserted. This problem is a key quality problem. Once a problem occurs, it will cause the solder to fail to be evenly fused into the clearance around the small elbow, and the insufficient melting depth of the solder will cause the refrigerant leakage at the connection between the elbow and the U-shaped tube cup mouth, thereby affecting the refrigeration performance of the air conditioner.
[0004] In view of this, research and improvement are carried out on the existing problems, and a port flaring tool for the long U-shaped tube of an air conditioner heat exchanger is provided, aiming to solve the problems and improve the practical value through this technology. Content of the Utility Model
[0005] The purpose of the utility model is to provide a port flaring tool for the long U-shaped tube of an air conditioner heat exchanger to solve the problems and deficiencies mentioned in the above background art.
[0006] To achieve the above purpose, the utility model provides a port flaring tool for the long U-shaped tube of an air conditioner heat exchanger, which is achieved by the following specific technical means:
[0007] A port flaring tool for the long U-shaped tube of an air conditioner heat exchanger includes: a positioning seat, a connecting rod, a first extension rod, a flaring cone, a second extension rod, a guiding head, a cup mouth end, and a bell mouth; the positioning seat is of a cylindrical structure, and the connecting rod is welded and installed at the bottom of the positioning seat; the first extension rod is installed at the bottom of the connecting rod, and the first extension rod is welded and connected to the connecting rod; the flaring cone is installed at the bottom of the first extension rod, and the flaring cone is welded and connected to the first extension rod; the second extension rod is installed at the bottom of the flaring cone, and the second extension rod is welded and connected to the flaring cone; the guiding head is installed at the bottom of the second extension rod, and the guiding head is welded and connected to the second extension rod; the cup mouth end is located on the outer wall of the flaring cone, and the cup mouth end abuts against the flaring cone; the bell mouth is located at the top of the cup mouth end, and the bell mouth and the cup mouth end are of an integral structure.
[0008] As a further optimization of this technical solution, a flaring tool for the port of the long U-tube of an air conditioner heat exchanger according to the utility model is provided with a flaring cone welded and installed between the first extension rod and the second extension rod.
[0009] As a further optimization of this technical solution, a flaring tool for the port of the long U-tube of an air conditioner heat exchanger according to the utility model has a conical opening area at the upper part of the flaring cone larger than that at the lower part.
[0010] As a further optimization of this technical solution, a flaring tool for the port of the long U-tube of an air conditioner heat exchanger according to the utility model has a 45-degree chamfer at the bottom of the connecting rod.
[0011] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:
[0012] 1. The utility model is provided with a flaring cone welded and installed between the first extension rod and the second extension rod, and the conical opening area at the upper part of the flaring cone is larger than that at the lower part. The conical opening area at the upper part of the flaring cone is larger than that at the lower part, so that the taper of the cup-shaped end after processing is increased, which can fully adapt to the connecting elbow of the cup-shaped end. Whether the connecting elbow of the cup-shaped end is inserted obliquely or is too tight unilaterally or bilaterally will not affect the sealing performance of the solder on the weld seam, improving the quality of the weld seam and reducing the hidden danger of system leakage.
[0013] 2. The utility model is provided with a 45-degree chamfer at the bottom of the connecting rod. The 45-degree chamfer at the bottom of the connecting rod enables a flared mouth to be generated at the top of the cup-shaped end, increasing the opening area and facilitating the quick positioning and installation operation of the connecting elbow at one end of the cup-shaped end.
[0014] 3. Through the improvement of a flaring tool for the port of the long U-tube of an air conditioner heat exchanger, the utility model has the advantages of reasonable structural design, strong adaptability of the connecting elbow of the cup-shaped end, strong sealing performance, not easy to leak after welding, and easy to operate, thus effectively solving the problems and deficiencies in the prior art and equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The accompanying drawings forming a part of this application are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation to the utility model. In the drawings:
[0016] Figure 1 is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 is a schematic sectional structure diagram of the utility model;
[0018] Figure 3 is an exploded structure diagram of the flaring cone of the utility model;
[0019] Figure 4 This is the enlarged structural schematic diagram of part A of the present utility model.
[0020] In the figure: positioning seat 1, connecting rod 2, first extension rod 3, flaring cone 4, second extension rod 5, guiding head 6, cup mouth end 7, bell mouth 8. Specific embodiments
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.
[0022] Please refer to Figures 1 to 4 , the present utility model provides a specific technical implementation solution for a port flaring tool for a long U-tube of an air-conditioning heat exchanger:
[0023] A port flaring tool for a long U-tube of an air-conditioning heat exchanger includes: a positioning seat 1, a connecting rod 2, a first extension rod 3, a flaring cone 4, a second extension rod 5, a guiding head 6, a cup mouth end 7, a bell mouth 8; the positioning seat 1 is of a cylindrical structure, and the connecting rod 2 is welded and installed at the bottom of the positioning seat 1.
[0024] The bottom of the connecting rod 2 is provided with a forty-five-degree bevel. The bottom of the connecting rod 2 has a forty-five-degree bevel, so that a bell mouth 8 can be generated at the top of the cup mouth end 7, increasing the opening area and facilitating the quick positioning and installation operation of connecting the elbow at one end of the cup mouth end 7.
[0025] The first extension rod 3 is installed at the bottom of the connecting rod 2, and the first extension rod 3 is welded to the connecting rod 2; a flaring cone 4 is welded and installed between the first extension rod 3 and the second extension rod 5. The taper area of the upper part of the flaring cone 4 is larger than that of the lower part. The taper area of the upper part of the flaring cone 4 is larger than that of the lower part, so that the taper of the processed cup mouth end 7 can be increased, which can fully adapt to the connecting elbow of the cup mouth end 7. Whether the connecting elbow of the cup mouth end 7 is inserted obliquely or is too tight unilaterally or bilaterally will not affect the sealing performance of the solder on the weld seam, improving the quality of the weld seam and reducing the hidden danger of system leakage.
[0026] The flaring cone 4 is installed at the bottom of the first extension rod 3, and the flaring cone 4 is welded to the first extension rod 3; the second extension rod 5 is installed at the bottom of the flaring cone 4, and the second extension rod 5 is welded to the flaring cone 4; the guiding head 6 is installed at the bottom of the second extension rod 5, and the guiding head 6 is welded to the second extension rod 5; the cup mouth end 7 is located on the outer wall of the flaring cone 4, and the cup mouth end 7 abuts against the flaring cone 4; the bell mouth 8 is located at the top of the cup mouth end 7, and the bell mouth 8 and the cup mouth end 7 are of an integral structure.
[0027] Specific implementation steps:
[0028] During use, insert the end of the U-shaped tube of the heat exchanger to be flared into the guide head 6 and squeeze it forcefully towards one end of the connecting rod 2. The tooling flares the end of the U-shaped tube of the heat exchanger into a cup-shaped end 7 and a flared mouth 8. The conical mouth area of the upper part of the flaring cone 4 is larger than that of the lower part, so that the processed cup-shaped end 7 has an increased taper, which can fully adapt to the connecting elbow of the cup-shaped end 7. Whether the connecting elbow of the cup-shaped end 7 is inserted obliquely or is too tight on one side or both sides does not affect the sealing performance of the solder on the weld, improves the quality of the weld, and reduces the hidden danger of system leakage.
[0029] In summary: For this port flaring tooling for the long U-shaped tube of an air-conditioning heat exchanger, a flaring cone is welded and installed between the first extension rod and the second extension rod. The conical mouth area of the upper part of the flaring cone is larger than that of the lower part. The conical mouth area of the upper part of the flaring cone is larger than that of the lower part, so that the processed cup-shaped end has an increased taper, which can fully adapt to the connecting elbow of the cup-shaped end. Whether the connecting elbow of the cup-shaped end is inserted obliquely or is too tight on one side or both sides does not affect the sealing performance of the solder on the weld, improves the quality of the weld, and reduces the hidden danger of system leakage; through the setting that the bottom of the connecting rod is chamfered at 45 degrees, the bottom of the connecting rod is chamfered at 45 degrees, so that a flared mouth can be generated at the top of the cup-shaped end, increasing the opening area and facilitating the quick positioning and installation operation of the connecting elbow at one end of the cup-shaped end; through the improvement of the port flaring tooling for the long U-shaped tube of an air-conditioning heat exchanger, it has the advantages of reasonable structural design, strong adaptability of the connecting elbow of the cup-shaped end, strong sealing performance, not easy to leak after welding, and easy to operate, thus effectively solving the problems and deficiencies in the prior art and equipment.
[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A port expansion tool for a long U-tube of an air-conditioning heat exchanger, comprising: A positioning seat (1), a connecting rod (2), a first extension rod (3), an expanding cone (4), a second extension rod (5), a guide head (6), a cup end head (7), and a bell mouth (8); characterized in that: the positioning seat (1) is a cylindrical structure, and the connecting rod (2) is welded and installed at the bottom of the positioning seat (1); the first extension rod (3) is installed at the bottom of the connecting rod (2), and the first extension rod (3) is welded and connected to the connecting rod (2); the expanding cone (4) is installed at the bottom of the first extension rod (3), and the expanding cone (4) is connected to the first extension rod (5). The second extension rod (5) is installed at the bottom of the flaring cone (4), and the second extension rod (5) is welded to the flaring cone (4); the guide head (6) is installed at the bottom of the second extension rod (5), and the guide head (6) is welded to the second extension rod (5); the cup mouth end (7) is located on the outer wall of the flaring cone (4), and the cup mouth end (7) is in contact with the flaring cone (4); the bell mouth (8) is located at the top of the cup mouth end (7), and the bell mouth (8) and the cup mouth end (7) are an integrated structure.
2. The port expansion tool for a long U-tube of an air-conditioning heat exchanger according to claim 1, characterized in that: A flaring cone (4) is welded and installed between the first extension rod (3) and the second extension rod (5).
3. The port expansion tool for a long U-tube of an air-conditioning heat exchanger according to claim 1, characterized in that: The cone opening area of the upper portion of the expanding cone (4) is larger than the cone opening area of the lower portion.
4. The port expansion tool for a long U-tube of an air-conditioning heat exchanger according to claim 1, characterized in that: The bottom of the connecting rod (2) has an inverted angle of forty-five degrees.