Patent ID: 6062303
Filing Date: 2000-05-16
Classification: F25B,F28D,F28F

Abstract:
A multiflow type condenser for an automobile air conditioner comprising:a pair of header pipes disposed in parallel with each other and arranged to have an inlet and an outlet, said header pipes being elliptical in cross-section;a plurality of flat tubes each connected to said header pipes at opposite ends thereof, each of said flat tubes having a plurality of inside fluid paths, a hydraulic diameter of said inside fluid paths being in the range of about 1 to 1.7 mm;a plurality of corrugated fins each disposed between adjacent flat tubes;at least a pair of baffles disposed in said header pipes;at least one by-pass passageway formed around a position at which the chambers in each header pipe are divided by the baffle therein to route a vapor-abundant phase of said refrigerant from an upper chamber to a lower chamber within the same header pipes by providing a communication path between the adjacent chambers;a ratio of a hydraulic diameter of said by-pass passageway over said hydraulic diameter of said inside fluid paths being in the range of about 0.28 to 2.25; andan area of a pass on the inlet side defined by the chamber on the inlet side into which said refrigerant is introduced through said inlet and formed in one of said header pipes, the opposed chamber formed in the other of said header pipes, and a plurality of tubes extending between the chambers is about 30% to 65% of an overall area of all of said passes.