Heat exchanger and air conditioner
AssigneeDaikin Industries, Ltd.
InventorsShun Yoshioka, Toshimitsu Kamada
Life of this patent
Estimating the term…
Abstract
A heat exchanger includes flat tubes and fins. The fins are corrugated fins, and are disposed between the flat tubes that are vertically arranged. Between the vertically arranged flat tubes, heat transfer parts of each of the fins are arranged in the direction in which the flat tubes extend. Each of the heat transfer parts include louvers that extend in an up-and-down direction. Bent-out ends of the windward louvers include main edges, upper edges, and lower edges. The upper edges and the lower edges are tilted relative to the main edges. The tilt angle θ5 of the lower edges relative to the main edges is smaller than the tilt angle θ4 of the upper edges relative to the main edges.
Claims4
A heat exchanger, comprising:
- flat tubes vertically arranged with side surfaces thereof facing one another, each of the flat tubes including a fluid passage therein;
- and
- fins each dividing a space between adjacent ones of the flat tubes into a plurality of air passages through which air flows, wherein
- each of the fins includes heat transfer parts each having a plate shape extending from an adjacent one of the flat tubes to another adjacent one of the flat tubes, the heat transfer parts forming side walls of the air passages,
- in the fins, louvers that extend in an up-and-down direction and bend out from the heat transfer parts are arranged in an air passage direction,
- a bent-out end of each of the louvers includes a main edge, an upper edge extending from an upper end of the main edge to an upper end of the louver and tilted relative to the main edge, and a lower edge extending from a lower end of the main edge to a lower end of the louver and tilted relative to the main edge,
- at least one of the louvers provided on each of the heat transfer parts of the fins is a symmetric louver which is located in a leeward region of the louvers and in which a tilt angle of the lower edge relative to the main edge is equal to a tilt angle of the upper edge relative to the man edge,
- the or each of the other louvers located at a windward side of the symmetric louver is an asymmetric louver in which a tilt angle of the lower edge relative to the main edge is smaller than a tilt angle of the upper edge to the main edge, and
- in each of the heat transfer parts of the fins, the or each asymmetric louver is arranged only windward of the symmetric louver or louvers.
Dependencies are inferred from the claim text.