FIN-AND-TUBE HEAT EXCHANGER AND REFRIGERATION CYCLE DEVICE

WIPO Patent Application WO/2014/167845

A1

A fin-and-tube heat exchanger comprises: fins (31) which each have flat sections (35), first sloped sections (36), and second sloped sections (38); and heat transfer pipes (21). If the distance from the upstream end of the first sloped sections (36) to the downstream end thereof in the direction of air flow is S1, the distance between the centers of the heat transfer pipes (21) in the tier direction is S2, the distance from the upstream ends of the flat sections (35) to the downstream ends thereof in the air flow direction is D1, a flat plane which is in contact, from the side opposite the crest of a ridge (34), with the upstream end and downstream end of the first sloped sections (36) in the air flow direction is a reference flat plane (H1), the angle between the reference flat plane (H1) and each of the first sloped surfaces (36) is θ1, the angle between the reference flat plane (H1) and each of the second sloped sections (38) measured in a region upstream of a through-hole in the air flow direction is θ2, the distance from the reference flat plane (H1) to each of the flat sections (35) is α, and the distance between the reference flat plane (H1) of one fin (31) and the reference flat plane (H1) of another fin (31) adjacent to the crest of the ridge (34) is L, then the range of θ2 is determined by the relationship 0º <θ2 < tan-1[(L±α)/{(S1-D1)/2-L/tanθ1}].

NAGAI MASAAKI
WADA MASANOBU

PCT/JP2014/002018

October 16, 2014

April 09, 2014

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PANASONIC CORP (JP)

F28F1/32; F25B39/00

JP2013019578A	2013-01-31
JP2000193389A	2000-07-14
JPH0493594A	1992-03-26
JP2005539193A	2005-12-22
JPH11125495A	1999-05-11

See also references of EP 2985558A4

WASHIDA, KIMIHITO (JP)
Koichi Washida (JP)

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