Patent ID: 9127868
Filing Date: 2015-09-08
Classification: F25B,F28D,F28F

Abstract:
1. A heat exchanger having a plurality of heat-transfer tubes arrayed at intervals in vertical and anteroposterior directions and arranged so that an equilateral triangle is formed by lines connecting respective centers of heat-transfer tubes located vertically and anteroposteriorly adjacent to each other; and a plurality of heat-transfer corrugated fins arranged at intervals in an axial direction of the heat-transfer tubes, wherein: when an external diameter of each of the heat-transfer tubes is V1, a vertical pitch of the heat-transfer tubes is V2, a fin pitch of the heat-transfer corrugated fins is V3, a fin plate thickness of each of the heat-transfer corrugated fins is V4, and a corrugate height of the heat-transfer corrugated fins is V5, at least values of V1 and V4 are arbitrarily provided, and at least any one of values V2, V3 and V5 is set from the following relationships: where coefficients Cx are values shown in the following table: