CN2338716Y

CN2338716Y - Forced heat-transfer type fin-tube

Info

Publication number: CN2338716Y
Application number: CN 98219184
Authority: CN
Inventors: 臧海; 杜西宁; 贾诚
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-10-09
Filing date: 1998-10-09
Publication date: 1999-09-15
Anticipated expiration: 2008-10-09

Abstract

The utility model relates to a forced heat-transfer type fin-tube, which is composed of a heat-transfer tube (1) and a fin (2). The utility model is characterized in that the heat-transfer tube (1) is a circular tube; the fin (2) is in the shape of longitudinal S-shaped. The utility model has the advantages of simple structure, low cost, easy fabrication, high thermal efficiency and small flow resistance of heat exchange medium, and is an ideal regenerate heat-transfer tube of the heat exchanger.

Description

Augmentation of heat transfer type finned tube

The utility model relates to a kind of finned tube of augmentation of heat transfer, is the heat exchange tube core of various heat exchangers.

At present, existing technical data shows that market can produce various heat exchanger tubes such as hoop finned tube, spiral grooved tube, longitudinal finned tube.For example: No. 89201458 disclosed a kind of novel twin fin pipe type heat transfer pipes of Chinese utility model patent, its inner fin is made up of the floor of " W " or " U " shape structure of some, these floors radial in pipe is equally spaced, its outer fin distributes perpendicular to the tube outer wall hoop, has the high advantage of heat transfer efficiency, because the restriction of making can only be used on the big caliber,, fail to promote the use of owing to be subjected to the restriction of manufacture level always.Another kind of longitudinal finned tube has adopted outside pipe and has circumferentially welded the method for fin to increase the heat exchange area of pipe along pipe, because it is better that welding procedure solves, practical stage can be entered at present, because the fin structure that its fin that adopts is straight shape, causing the outer liquid flow of pipe is laminar flow situation (under the normal condition), can not reach the desired turbulent condition of heat exchange, very unfavorable to liquid heat exchange like this, do not bring into play the big advantage of its heat exchange area yet.

The purpose of this utility model is: propose a kind of augmentation of heat transfer type finned tube.This finned tube, simple in structure, cheap, easily manufactured, the heat transfer efficiency height, the heat transferring medium flow resistance is little.

The utility model augmentation of heat transfer type finned tube is achieved in that by heat-transfer pipe and wave-shaped fins and constitutes; Its wave-shaped fins is a S shape ripple, and the axis of its S shape ripple is parallel to the heat-transfer pipe axis.The equidistant branch of the pipe vertical wave-shaped fins radial of periphery.

Further elaborate as follows below by embodiment and accompanying drawing to structure of the present utility model:

Accompanying drawing 1: structural representation of the present utility model;

Accompanying drawing 2: the utility model embodiment schematic diagram;

Its structure of the utility model is as shown in Figure 1: be made of heat-transfer pipe (1) and wave-shaped fins (2); Its heat-transfer pipe (1) is a pipe; Its wave-shaped fins (2) is vertical S shape ripple.The axis of its S shape ripple is parallel to the heat-transfer pipe axis.The equidistant branch of the pipe vertical wave-shaped fins radial of periphery.

Embodiment 1: heat-transfer pipe (1) is a pipe, and its material is cold rolling, hot rolling or stainless steel tube; " U " the type S shape ripple of its wave-shaped fins (2) for paralleling to the axis; " U " type S shape ripple fin upper end radius of curvature size will be distinguished to some extent for different operating modes; But in a word, diminish gradually from top to bottom its bottom surface for heat-transfer pipe (1) intersecting lens be straight line, its material is cold rolling, hot rolling or stainless steel; The selection of its welding method should be according to the heat transferring medium of heat exchanger and temperature parameter different, adopt unlike material and method respectively, such as methods such as soldering, Pressure Welding, ratio-frequency weldings.

Embodiment 2: heat-transfer pipe (1) is a pipe, and its material is cold rolling, hot rolling or stainless steel tube; The strip S shape ripple of its wave-shaped fins (2) for paralleling to the axis, the fin curve curvature radius, to distinguish to some extent for different operating modes, S shape ripple fin is hot rolling, cold-rolled strip or stainless steel material, its bottom surface is for to be welded as a whole with heat-transfer pipe (1), the selection of its welding method should be according to the heat transferring medium of heat exchanger and temperature parameter different, adopt unlike material and method respectively, adopt such as methods such as soldering, Pressure Welding, ratio-frequency weldings.

Embodiment 3: heat-transfer pipe (1) is a pipe, and its material is cold rolling, hot finished steel pipe or stainless steel; The strip of its wave-shaped fins (2) for paralleling to the axis, as shown in Figure 2.S shape ripple fin upper end curve curvature radius, to distinguish to some extent for different operating modes, diminish gradually from top to bottom, its bottom surface and heat-transfer pipe (1) intersection is a straight line, S shape ripple fin is hot rolling, cold-rolled strip or stainless steel material, S shape ripple fin and heat-transfer pipe (1) are welded as a whole, and the selection of its welding method should be according to the different unlike material and the methods of adopting respectively of the heat transferring medium and the temperature parameter of heat exchanger, such as: methods such as soldering, Pressure Welding, ratio-frequency welding.

The utility model compared with prior art has the following advantages: 1) the outer liquid flow of pipe Be turbulent condition; 2) heat exchange efficiency height; 3) technology can realize at present; 4) not only suitable Close in general liquid, be more suitable in the thick liquid heat exchange; 5) the littler occupation of land face of equipment volume Long-pending littler, save valuable natural resources.

The advantage that the utility model augmentation of heat transfer type finned tube is applied on the heat exchanger is: Improved the flow condition of liquid, become laminar flow and be turbulent flow; Improved heat transfer efficiency; Reduced Volume has reduced the steel consumption; Reduce land use area, saved land resource; Reduce Fluid resistance, reduced energy consumption; This kind utility model not only is widely used in various shells In the formula heat exchanger, also can be widely used in other various heat exchangers.

Therefore, the utility model augmentation of heat transfer type finned tube, simple in structure, cost is low Honest and clean, easily manufactured, the heat transfer efficiency height, the heat transferring medium flow resistance is little. A kind of desirable The update Exchanger Tubes.

Claims

1. augmentation of heat transfer type finned tube: constitute by heat-transfer pipe (1) and fin (2); It is characterized in that: its heat-transfer pipe (1) is the garden pipe; Its fin (2) is vertical S shape ripple;

2. augmentation of heat transfer type finned tube as claimed in claim 1: it is characterized in that: the axis of its fin (2) S shape ripple is parallel to the heat-transfer pipe axis.The equidistant branch of the pipe vertical wave-shaped fins radial of periphery.

3. augmentation of heat transfer type finned tube as claimed in claim 2: it is characterized in that: its fin (2) S shape ripple fin upper end radius of curvature size will be distinguished to some extent for different operating modes; But in a word, diminish gradually from top to bottom its bottom surface for heat-transfer pipe (1) intersecting lens be straight line or S shape ripple;