HEAT EXCHANGER AND AIR-CONDITIONING APPARATUS HAVING THE SAME

摘要

A heat exchanger includes a plurality of fins stacked with a predetermined fin pitch between them, and a plurality of heat transfer tubes which extend through the fins in the stack direction and have a flat cross-sectional shape, wherein the fins have a plurality of notches in a shape corresponding to the cross-sectional shape of the heat transfer tube on an end portion in the longitudinal direction, a collar is formed on an edge of the plurality of notches, the heat transfer tubes are inserted into the notches, a fin pitch between a portion of the plurality of fins is larger than a fin pitch between the other portion of the fins, and the larger fin pitch is larger than at least the height of the collar.

主权项

1. A heat exchanger comprising:
a plurality of fins stacked with a predetermined fin pitch therebetween; and a plurality of heat transfer tubes which are disposed with a predetermined pitch therebetween in a longitudinal direction of the fins and extend through the fins in a direction in which the fins are stacked, wherein each of the plurality of heat transfer tubes has a flat cross-sectional shape, each of the plurality of fins includes a plurality of notches conforming to the cross-sectional shape of each heat transfer tube on an end portion of each fin in the longitudinal direction, each of the plurality of notches includes a collar formed on an edge thereof, the heat transfer tubes are respectively inserted into the notches, the plurality of fins include one set of fins having a fin pitch larger than a fin pitch of another set of fins, and the larger fin pitch is larger than at least a height of the collar corresponding to an amount of extension of the collar from a plate surface of the fin.