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US 7,726,025 B2Granted
Structure for preventing refrigerant from leaking in heat exchanger and method for forming the same
AssigneeLG Electronics Inc.
InventorJang Seok Lee
Life of this patent
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Abstract
A refrigerant leak-preventive structure in a heat exchanger is described. The refrigerant leak-preventive structure includes a tube group having refrigerant leak-preventive grooves recessed at ends of the fin-tubes group, and headers having refrigerant leak-preventive projections formed by double injection molding solution introduced into and cooled in the refrigerant leak-preventive grooves when being coupled with the both ends of the tube group by a double injection molding.
Claims6
A refrigerant leak-preventive method in a heat exchanger, the method comprising:
- forming, by a first injection molding, at least one refrigerant leak-preventive deformation on an outer periphery of at least one end of a tube group, wherein the tube group is made of plastic;
- forming, by a second injection molding, headers at opposite ends of the tube group, wherein at least one refrigerant leak-preventive projection of the headers:
- is substantially identical with the at least one refrigerant leak-preventive deformation of the tube group, and
- is formed integrally with the at least one refrigerant leak-preventive deformation of the tube group;
- and
- combining header tanks with the headers.
3 more elements
Dependencies are inferred from the claim text.