Heat exchanger apparatus having heat exchanger pipes and sheetme

Details Heat exchanger apparatus having heat exchanger pipes and sheetme Heat exchanger apparatus having heat exchanger pipes and sheetme

1988-03-30

1989-06-06

Jones, Larry

Heat exchange

Radiator core type

Side-by-side tubes traversing fin means

165148, 291573B, E21B 2300

Patent

active

048362778

ABSTRACT:
Described is a heat exchanger apparatus having heat exchanger pipes (20) and sheet-like plates (10) having bores (12). The edge configuration of each plate (10) comprises the side edges (16) of an elongate strip and parallel base edges (18) which cut through the strip inclinedly beside the bores (12). The heat exchanger pipes (20) extend through the bores (12), the diameter (da) of the bores comprising the outside diameter of the heat exchanger pipes and the bores (12) being arranged in a rectangular grid configuration; the longitudinal grid lines (22) extend parallel to the side edges (16) and the transverse grid lines (24) extend normal to the side edge (16). The grid lines (22, 24) are at constant pitches (s.sub.2, s.sub.1) in the two mutually perpendicular grid directions, with adjacent transverse grid lines (24) being displaced relative to each other by half the grid line pitch (s.sub.1 /2). The base edge (18) includes with the side edge (16) an angle (A) which is given by the following formula: ##EQU1## The base edge (18) is disposed between the bores (12) in a strip region (26) whose width (c) is given by the formula: ##EQU2## wherein the diameter (da) and the pitches (s.sub.1, s.sub.2) are related in such a relationship that the following applies: ##EQU3##

REFERENCES:
patent: 4173998 (1979-11-01), Johoda
patent: 4465128 (1984-08-01), Krekacs et al.
patent: 4546822 (1985-10-01), Tamura
patent: 4559994 (1985-12-01), Waldmann et al.

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