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US 6,554,929 B2Granted
Method for joining tube headers and header tanks of plastic heat exchanger
AssigneeLG Electronics Inc.
InventorJang Seok Lee
Life of this patent
Estimating the term…
Abstract
Disclosed is a method for joining tube headers and header tanks of a heat exchanger made of a plastic material by joining fin-tube units of a fin-tube assembly with tube headers in accordance with a thermal fusing method while joining the fin-tube units with each header tank in accordance with a fusing method using ultrasonic waves.
Claims6
A method for joining tube headers of a plastic heat exchanger, comprising the steps of:
- forming fins made of a plastic material on respective outer peripheral surfaces of refrigerant tubes made of a plastic material and arranged in a laminated fashion while allowing each of fins to connect to corresponding refrigerant tubes, thereby forming a fin-tube assembly having a plurality of fin-tube units each consisting of one refrigerant tube and one fin;
- forming tube headers made of a plastic material at opposite ends of each of the fin-tube units in accordance with a double injection molding process, respectively;
- arranging a thermal fusing jig to support the bottoms of the tube headers at each end of the fin-tube assembly;
- and
- pressing thermal fusing molding dies of a thermal fusing machine against the fin-tube units at each end of the fin-tube assembly, thereby thermally fusing the tube headers to the fin-tube units, so that the tube headers are integral with the fin-tube units, respectively.
2 more elements
A method for joining tube headers of a plastic heat exchanger, comprising the steps of:
- forming fins that made of a plastic material on respective outer peripheral surfaces of refrigerant tubes made of a plastic material and arranged in a laminated fashion while allowing each of the fins to connect associated adjacent ones of the refrigerant tubes, thereby forming a fin-tube assembly having a plurality of fin-tube units each consisting of one refrigerant tube and one fin;
- forming tube headers at opposite ends of each of the fin-tube units in accordance with a double injection molding process, respectively;
- arranging header tanks made of a plastic material at opposite ends of the fin-tube assembly while bringing each of the header tanks into contact with the tube headers arranged at an associated one of the opposite ends of the fin-tube assembly;
- and
- arranging a heat generating device on each of the header tanks, and thermally fusing the header tank to the tube headers arranged at the corresponding end of the fin-tube assembly in accordance with an operation of the heat generating device.
2 more elements
Dependencies are inferred from the claim text.