What is the reason for the use of radiator aluminum tube in automotive air conditioners?
1. From a structural point of view: the copper tube of the traditional radiator is a cylindrical structure, while the radiator aluminum tube adopts a porous flat structure, so the surface area of the radiator aluminum tube is much larger than that of the copper tube, but the floor space is smaller. much smaller. Therefore, the heat exchange capacity is stronger, and the refrigerant consumption can be reduced by 70%, which is more suitable for the compact structure of the automobile, and the heat exchange efficiency will be greatly improved under the optimization of the EC motor.
2. Noise reduction: The high-efficiency solenoid composed of radiator aluminum tubes, combined with EC motors, can reduce noise by 50%, so many countries basically strongly require the use of radiator aluminum tubes for air conditioners in automobiles.
Therefore, compared with the solenoids made of copper tubes used in traditional refrigerators, the advantages of radiator aluminum tubes are more obvious.
The most important reason why radiator aluminum tubes are not widely used in various refrigeration equipment such as air conditioners and refrigerators is because the technical requirements for producing radiator aluminum tubes are higher, and the financial resources are higher.
You must know that before 2010, only a few manufacturers in the world, such as Norway's Hydro, Japan's Mitsubishi and Furukawa, and South Korea's Yijin, could produce, and they were also in a monopoly trend in technology. There are breakthroughs, especially in the welding technology of radiator aluminum tube joints.
Since the wall thickness of the serpentine radiator aluminum tube is only 0.3mm, it is easy to burn the base metal if artificial flame brazing is used, and it is difficult to ensure that the temperature rise of the solder is consistent and the welding seam is formed at the same time; the cost of the brazing tunnel furnace is too high, and the general enterprises hard to accept.
However, now CHALCO's "high frequency brazing technology" has solved the problem of radiator aluminum tube joint welding, and the welding cost is low, making it the first choice for radiator aluminum tube.
What are the advantages of high frequency brazing equipment?
1. The price is moderate and can be customized, and one or more welding stations can be customized according to customer needs;
2. Single-station high-frequency brazing equipment with small footprint and low requirements for operators;
3. The welding quality is high, the consistency is good, the welding seam is beautiful, and the welding technology is safe and reliable;
