CN104697363A

CN104697363A - Heat exchanger with vortex pair type squarely arranged heat transferring vortex array

Info

Publication number: CN104697363A
Application number: CN201510095416.0A
Authority: CN
Inventors: 陈亚平; 王明超; 吴嘉峰
Original assignee: Southeast University
Current assignee: Southeast University
Priority date: 2015-03-04
Filing date: 2015-03-04
Publication date: 2015-06-10

Abstract

The invention discloses a heat exchanger with a vortex pair type squarely arranged heat transferring vortex array. The heat exchanger with the vortex pair type squarely arranged heat transferring vortex array comprises a housing 1, wherein a heat transferring core 2 is arranged inside the housing; the heat transferring core comprises cylindrical heat transferring vortexes arranged according to a square array; the outlines of the adjacent heat transferring vortexes are tangent; the sizes, the spiral leads and spiral phases of the heat transferring vortexes are identical; the heat transferring vortexes comprise right-handed rotating vortexes 2-1 and left-handed rotating vortexes 2-2; the spiral rotating directions of any two adjacent heat transferring vortexes are opposite. The heat exchanger with the vortex pair type squarely arranged heat transferring vortex array has the advantages of enhancing the heat transfer effect, reducing the flow resistance and barely increasing the cost as the flow directions of the vortex pair type adjacent heat transferring vortexes are consistent at the tangent position to form resultant force, and can be applied to occasions such as a squarely arranged distorted elliptical tube heat exchanger.

Description

A kind of to whirlpool formula square arrangement heat transfer vortex array heat exchanger

Technical field

The present invention relates to a kind of heat transfer vortex array heat exchanger, particularly relate to a kind of to whirlpool formula square arrangement heat transfer vortex array heat exchanger.

Background technology

Vortex motion is a kind of phenomenon that nature exists, and because its main flow does not change direction substantially, thus flow resistance is less.The example of a lot of application helical vortex is had, as distorted elliptical heat exchange of heat pipe, thread groove tube heat exchanger and spiral baffle heat exchanger etc. in heat transfer enhancement technology field.

The heat transfer vortex array heat exchanger generally adopted at present is all that namely the vortex direction of all heat transfer vortexes is identical along whirlpool scheme.Although rotation direction is the same for point fluid be interposed between in pipe, but for the fluid be centered around outside pipe, because the flow direction of the helical duct inner fluid at adjacent 2 tangent places of heat transfer vortex arranged along whirlpool is contrary, the loss that will inevitably cause fluid flow momentum and energy to the swash of wave formed, causes the reduction of the coefficient of heat transfer or the raising of flow resistance the most at last.Although have the application to reverse vortex in the mechanical occasion such as double-screw compressor or oil pump, the problems in role of vortex direction of rotation of regrettably conducting heat in field of heat transfer is both at home and abroad at present not yet to heat transfer vortex array heat exchanger has relevant research or effectively utilizes.

Summary of the invention

The invention provides a kind of to whirlpool formula square heat transfer vortex array heat exchanger.

The present invention adopts following technical scheme:

A kind of to whirlpool formula square arrangement heat transfer vortex array heat exchanger, comprise housing, heat transfer core body is provided with in housing, described heat transfer core body is made up of the column heat transfer vortex arranged according to quadrate array, and the appearance profile of adjacent heat transfer vortex is tangent, the size of described heat transfer vortex, lead of screw and helical phase are identical; Described heat transfer vortex is divided into dextrorotation heat transfer vortex and left-handed heat transfer vortex, and the rotary orientation of two heat transfer vortexes of arbitrary neighborhood is contrary.

Compared with prior art, tool of the present invention has the following advantages:

1) for the heat transfer vortex array heat exchanger be made up of multiple local vortex, the flow direction of adjacent heat transfer vortex in its tangent place passage that 2 direction of rotation are contrary is consistent, thus can be formed and make a concerted effort, be conducive to strengthening heat-transfer effect and reducing flow resistance.Fig. 3 display be that adjacent heat transfer vortex that a pair rotary orientation is contrary is namely to whirlpool heat transfer vortex, when two stocks do not occur to converge along the fluid of the helical duct of adjacent heat transfer vortex flowing in the passage at two heat transfer tangent places of vortex (see in the dotted line circle of Fig. 3 shown in arrow), flowing to of two fluids is identical; And be along whirlpool heat transfer vortex for the adjacent heat transfer vortex that existing rotary orientation is identical, when two stocks do not occur to converge along the fluid of the helical duct of adjacent heat transfer vortex flowing in the passage at two heat transfer tangent places of vortex (see in the dotted line circle of Fig. 4 shown in arrow), the flow direction of two fluids is on the contrary, formed the swash of wave, and the generation dissipation that fails to be convened for lack of a quorum that liquidates.Visible the present invention utilizes and occurs to flow to identical feature when converging to whirlpool adjacent heat transfer vortex two fluids in the passage at tangent place, flow resistance can be reduced, and being conducive to augmentation of heat transfer, the heat transfer vortex quantity that simultaneously can meet again 2 vortex directions is substantially equal.

2) manufacturing cost due to different directions heat transfer vortex is normally identical, thus of the present invention is the technical scheme having remarkable augmentation of heat transfer effect under a kind of condition increasing cost hardly to whirlpool formula square heat transfer vortex array heat exchanger, can facilitate layout and manufacture.

Accompanying drawing explanation

Fig. 1 be the embodiment of the present invention 1 pair whirlpool formula square arrangement heat transfer vortex array heat exchanger (central point arrange heat transfer vortex to whirlpool formula quadrate array distorted elliptical heat exchange of heat pipe) horizontal layout schematic diagram;

Fig. 2 be the embodiment of the present invention 2 pairs whirlpool formula square arrangement heat transfer vortex array heat exchangers (central point without heat transfer vortex to whirlpool formula quadrate array distorted elliptical heat exchange of heat pipe) horizontal layout schematic diagram;

Fig. 3 be in the embodiment of the present invention 1 and example 2 adjacent two to whirlpool twisted elliptic tube schematic perspective view;

Fig. 4 is adjacent two suitable whirlpool twisted elliptic tube schematic perspective views.

Detailed description of the invention

A kind of to whirlpool formula square arrangement heat transfer vortex array heat exchanger, comprise housing 1, heat transfer core body 2 is provided with in housing, described heat transfer core body is made up of the column heat transfer vortex arranged according to quadrate array, and the appearance profile of adjacent heat transfer vortex is tangent, the size of described heat transfer vortex, lead of screw and helical phase are identical; Described heat transfer vortex is divided into dextrorotation heat transfer vortex 2-1 and left-handed heat transfer vortex 2-2, and the rotary orientation of two heat transfer vortexes of arbitrary neighborhood is contrary, and it is adjacent and neighbouring that described arbitrary neighborhood comprises left and right.

At the described fluid to whirlpool formula around certain internal heat transfer vortex 2 flowing arbitrarily in the square vortex array heat exchanger that conducts heat, the fluid that all adjacent with four direction around it heat transfer vortex 2 of its flow direction flows formed flow direction consistent to whirlpool, be conducive to augmentation of heat transfer and reduce flow resistance.

Claims

1. one kind to whirlpool formula square arrangement heat transfer vortex array heat exchanger, comprise housing (1), heat transfer core body (2) is provided with in housing (1), described heat transfer core body (2) is made up of the column heat transfer vortex arranged according to quadrate array, and the appearance profile of adjacent heat transfer vortex is tangent, the size of described heat transfer vortex, lead of screw and helical phase are identical; It is characterized in that: described heat transfer vortex is divided into dextrorotation heat transfer vortex (2-1) and left-handed heat transfer vortex (2-2), the rotary orientation of two heat transfer vortexes of arbitrary neighborhood is contrary.