High-V plate fin heat exchanger and method of manufacturing
AssigneeYork International Corporation
InventorDouglas Alan Kester
Life of this patent
Estimating the term…
Abstract
A fin for a heat exchanger coil assembly and a method of manufacturing the fin is provided. The fin includes a heat transfer enhancement pattern which appears sinusoidal in shape. The base wavy pattern of the enhancement pattern includes two wavelengths within each tube row and includes seven discrete segments. Six of the seven segments are circular arc segments. The seventh segment comprises two linear segments which form a condensate channel. The segments are arranged in a particular order at specific distances offset (above and below) from a leading edge nominal air streamline (LENAS) by a fraction of a nominal fin pitch Pf. The LENAS is related to the “normal” base wavy pattern used in other fins.
Claims27
A method of manufacturing a fin plate for a heat exchanger coil assembly having a predefined fin pitch and a plurality of tubes arranged into a plurality of rows, the method comprising the steps of:
- defining a reference shape for the fin plate, the reference shape having a substantially sinusoidal shape and corresponding to a nominal air streamline;
- providing a first die to form a first predetermined pattern into the fin plate, the first predetermined pattern being formed with respect to the reference shape;
- forming the reference shape in the fin plate with the first die;
- raising a section of the fin plate above the reference shape by a first distance with the first die to form the first predetermined pattern into the fin plate;
- providing a second die to form a second predetermined pattern into the fin plate, the second predetermined pattern having a plurality of segments and at least one segment of the plurality of segments being offset from the first predetermined pattern by a first distance and at least one other segment of the plurality of segments being offset from the first predetermined pattern by a second distance;
- slitting the fin plate with the second die to define the plurality of segments;
- offsetting the at least one segment of the plurality of segments from the first predetermined pattern by the first distance with the second die;
- and
- offsetting the at least one other segment of the plurality of segments from the first predetermined pattern by the second distance with the second die to form the second predetermined pattern.
A method of manufacturing a fin plate for a heat exchanger coil assembly having a predefined fin pitch and a plurality of tubes arranged into a plurality of rows, the method comprising the steps of:
- defining a reference shape for a fin plate, the reference shape having a substantially sinusoidal shape and corresponding to a nominal air streamline;
- providing a first die to form a first predetermined pattern into the fin plate, the first predetermined pattern being defined with respect to the reference shape;
- forming the first predetermined pattern in the fin plate with the first die, wherein the first predetermined pattern includes a section of the fin plate raised above the reference shape by a first distance;
- providing at least one additional die to form a second predetermined pattern into the fin plate, the second predetermined pattern having a plurality of segments and at least one segment of the plurality of segments being offset from the first predetermined pattern by the first distance and at least one other segment of the plurality of segments being offset from the first predetermined pattern by a second distance;
- slitting the fin plate with the at least one additional die to define the plurality of segments;
- offsetting the at least one segment of the plurality of segments from the first predetermined pattern by the first distance with the at least one additional die to form a portion of the second predetermined pattern;
- and
- offsetting the at least one other segment of the plurality of segments from the first predetermined pattern by the second distance with the at least one additional die to form a portion of the second predetermined pattern.
A heat exchanger coil assembly comprising:
- a plurality of heat transfer tubes, the plurality of heat transfer tubes being positioned into at least one row, and the plurality of heat transfer tubes being disposed substantially parallel to one another;
- a plurality of fins in contact with the plurality of heat transfer tubes, the plurality of fins being disposed substantially perpendicular to the plurality of heat transfer tubes and substantially parallel to one another;
- each fin of the plurality of fins having a predetermined pattern for each row of heat transfer tubes, the predetermined pattern having a substantially sinusoidal shape, the predetermined pattern comprising a plurality of discrete segments, each segment of the plurality of discrete segments being disposed with respect to a predefined reference shape;
- and
- wherein, at least one segment of the plurality of discrete segments is disposed at an offset of a first distance from the predefined reference shape and at least one other segment of the plurality of discrete segments is disposed at an offset of a second distance greater than the first distance from the predefined reference shape.
A fin plate for a heat exchanger coil assembly having a predetermined fin pitch and a plurality of tubes arranged into a plurality of rows, the fin plate comprising:
- a predetermined pattern for each row of tubes, the predetermined pattern comprising a plurality of discrete segments, each segment of the plurality of discrete segments being disposed with respect to a predefined reference shape having a substantially sinusoidal shape;
- and
- wherein, at least one segment of the plurality of discrete segments is disposed at an offset from the predefined reference shape by a first fraction of the predetermined fin pitch and at least one other segment of the plurality of discrete segments is disposed at an offset from the predefined reference shape by a second fraction of the predetermined fin pitch.
Dependencies are inferred from the claim text.