Patent ID: 9328973
Filing Date: 2016-05-03
CPC Classification: F25B,F28D,F28F

Claim Text:
1. A heat exchanger, comprising: vertically arranged flat tubes each including a fluid passage therein; and fins having plate shapes, spaced from one another by a predetermined distance in a direction in which the flat tubes extend and each dividing a space between adjacent ones of the flat tubes into a plurality of air passages through which air flows, wherein the fins each have notches into which the flat tubes are inserted from front edges of the fins and which are spaced from one another by a predetermined distance in a longitudinal direction of the fins, parts of the fins between vertically adjacent ones of the notches are windward, plate parts, parts of the fins at leeward sides of the notches are leeward plate parts, windward heat transfer promotion parts each including at least one of a bent-out part extending in a direction intersecting with an air passage direction or a protrusion extending, in the direction intersecting, with the air passage direction are provided on the windward plate parts, parts of the windward plate parts of the fins extending along the notches located above and below the heat transfer promotion part find serve as flat parts, a plurality of leeward heat transfer promotion parts that are each a protrusion extending in the direction intersecting with the air passage direction are provided on the leeward plate parts, on the leeward plate parts of the fins, each of the leeward heat transfer promotion parts is located at a leeward side of an associated one of the notches, the leeward heat transfer promotion parts are arranged at predetermined intervals in said longitudinal direction of the fins, and each of the leeward heat transfer promotion parts overlaps with the flat part extending along the associated one of the notches, when viewed from the front edges of the fins.