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Flat tube-fin heat exchanger with double-side vortex generator

A generator and heat exchanger technology, applied in the direction of heat exchanger types, indirect heat exchangers, tubular elements, etc., can solve problems such as increased flow resistance, reduce resistance coefficient, improve heat exchange capacity, and improve heat exchange performance. Effect

Inactive Publication Date: 2011-07-13
LANZHOU JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing vortex generator-enhanced heat transfer surface with vortex generators arranged on one side can effectively enhance convective heat transfer performance, but at the same time the flow resistance also increases with the introduction of vortex generators

Method used

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  • Flat tube-fin heat exchanger with double-side vortex generator
  • Flat tube-fin heat exchanger with double-side vortex generator
  • Flat tube-fin heat exchanger with double-side vortex generator

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Embodiment Construction

[0016] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0017] A double-sided vortex generator type flat tube-fin heat exchanger, including flat tubes 3 arranged in parallel or staggered along the direction of gas flow and fins 4 sleeved on the flat tubes 3, on the fins 4 are arranged Set the holes 6 of the flat tube 3, stamp two pairs of upward triangular vortex generators 1 and two pairs of downward triangular vortex generators 2 on the upper and lower sides of each hole 6, and leave corresponding triangular vortex generators on the fins 4. Small hole 5. The two upward vortex generators 1 and the downward two vortex generators 2 are all perpendicular to the fin 4, the leading edge point of the first pair of upward vortex generators 1 is located at the front tangent of the hole 6, and the second pair of upward vortex generators The leading edge of the vortex generator 1 is positioned at the middle vertical line of th...

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Abstract

The invention discloses a flat tube-fin heat exchanger with a double-side vortex generator, which belongs to the technical field of flat tube-fin heat exchangers and comprises flat tubes arranged along the direction of air flow and fins sleeved on the flat tubes. The fins are provided with holes used for sleeving the flat tubes, two pairs of vortex generators facing upwards and two pairs of vortex generators facing downwards are stamped respectively by the upper side and the lower side of each hole, and corresponding small holes are left on the fins; and the front edge points of the first pair of the vortex generators facing upwards are located at front-end tangent lines of the holes used for sleeving the flat tubes, and the front edge points of the second pair of the vortex generators facing upwards are located at middle perpendicular lines of the holes used for sleeving the flat tubes. Compared with a traditional single-side fin for stamping the vortex generators, two sides of the fins disclosed by the invention are simultaneously turned over to stamp out the vortex generators, thereby the heat exchange capability of the fins can be improved, and the flow resistance of an air side can be simultaneously reduced. Moreover, the compactedness of a heat exchange device is increased, the power of a pump is reduced, and the energy sources are saved under an identical heat load.

Description

technical field [0001] The invention relates to the technical field of flat tube and fin heat exchangers, in particular to a double-sided vortex generator type flat tube and fin heat exchanger. Background technique [0002] The operating cost of the tube-fin heat exchanger depends on the heat transfer performance of the tube-fin heat exchanger. In order to meet the requirements of energy saving and emission reduction, it is very important to enhance the heat transfer of tube-fin heat exchangers. Flat tube, tube and fin heat exchangers are most suitable for mobile equipment heat exchangers, such as automotive water tanks, heat exchangers for internal combustion locomotives, flat tube and tube fin heat exchangers can be tube belt type or piercing sheet type, the former is more like plate fin type Heat Exchanger. Unless otherwise specified, the "tube" in "tube-fin heat exchanger" generally refers to round tubes, and most of the existing patents on the sheet type of tube-fin h...

Claims

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Application Information

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IPC IPC(8): F28D1/053F28F1/32F28F13/12
Inventor 宋克伟王良璧王良成林志敏张永恒武祥常立民
Owner LANZHOU JIAOTONG UNIV
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