CN2404092Y

CN2404092Y - Inside and outside tube

Info

Publication number: CN2404092Y
Application number: CN 99251789
Authority: CN
Inventors: 马钢
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-12-21
Filing date: 1999-12-21
Publication date: 2000-11-01
Anticipated expiration: 2009-12-21

Abstract

The utility model discloses an inside and outside vane independently generating tube which is suitable for a heat-exchanging system. The utility model is characterized in that the utility model is formed by directly processing and shaping a metal tube once; axially flaky, axially band-shaped, axially spirally flaky and axially spirally band-shaped vanes are independently generated at the inner wall of the tube; flaky, or acicular, or rhombic, or band-shaped or other shaped vanes with circular arrangement, spiral arrangement and axial arrangement are independently generated at the outer wall of the tube. The utility model has the advantages that the heat exchanger efficiency of the vanes with single sides is increased, the effect on inside and outside heat exchange of the tube is favorable, the heat exchange coefficient is high, and the forms of the inside and the outside vanes can be freely combined according to different purposes.

Description

Inside and outside tube

The utility model belongs to augmentation of heat transfer and field of energy-saving technology, on particularly a kind of pipe inside and outside wall that is applicable to heat-exchange device accessory pinna and accessory pinna and pipeline all-in-one-piece tube is arranged all.

The method of strengthening pipe type heat transfer is more, wherein: Chinese patent discloses a kind of " three-dimensional internal-rib pipe " (Granted publication CN1038360C) and " twin fin heat exchanger tube " (CN2170491Y), the coefficient of heat transfer of three-dimensional wife's pipe can reach 1.5-3.5 times of light pipe, the twin fin heat exchanger tube then adopts inside and outside tube wall welding fin, when outer wing ratio is 8, interior wing ratio is 4 o'clock, heat output can reach 5.25 times of light pipe, above product structure is accessory pinna independence adult, passes through welding with pipeline again, bonding, pterylas that mode is formed such as expanded joint, its inside and outside heat-transfer effect is poor, thermal contact resistance is big, the coefficient of heat transfer and monolithic accessory pinna heat exchange efficiency are low, and complex manufacturing, the cost height.

The purpose of this utility model is intended to overcome above-mentioned shortcoming, provide a kind of pipe inside and outside wall that accessory pinna and accessory pinna and pipeline all-in-one-piece tube are all arranged, this inside and outside tube heat convection that further enhanced tube is interior, pipe is outer, and manage outer phase-change heat-exchange (seethe with excitement and condense) in the pipe, thoroughly eliminate thermal contact resistance, reduce and manage interior, the outer flow resistance of pipe, and can adopt without the accessory pinna helical angle according to different purposes, change fluid flow state, form turbulent flow, strengthen heat exchange.

Goal of the invention of the present utility model is achieved in that

The utility model is that the accessory pinna and the direct disposal molding of metal tube of metal tube inside pipe wall and pipe outer wall is one, inside pipe wall self generates the accessory pinna of axial sheet or axial band shape or axial screw sheet or axial screw band shape, pipe outer wall self generates the accessory pinna of sheet or needle-like or water chestnut shape or banded or other shapes of annular array or helical arrangement or axially-aligned, and pipe inside and outside wall different shape accessory pinna and arrangement can be made up arbitrarily.

The utility model is applicable to the air-conditioning equipment heat-exchange device, chemical industry heat-exchange device, boiler hot switch, all pipe type heat transfers such as gas heater heat-exchange device and power-equipment cooling heat transferring.

The inside and outside heat-transfer effect of the utility model pipe is fabulous, monolithic accessory pinna heat exchange efficiency height, and coefficient of heat transfer height, and manufacturing process is simple relatively, easy to implement, can be applicable to all pipe type heat transfers, and applied widely.

The utility model is to adopt special equipment and frock to carry out mechanization production.

Provide accompanying drawing of the present utility model below:

Fig. 1 structural representation of the present utility model

Fig. 2 structural representation of the present utility model

Below in conjunction with drawings and Examples, the utility model is described in further detail.

The utility model is that employing metal tube inside pipe wall 1 is an one with pipe outer wall 3 accessory pinnas 2,4 and the direct disposal molding of metal tube, inside pipe wall 1 self generates the accessory pinna 2 of axial sheet or axial band shape or axial screw sheet or axial screw band shape, pipe outer wall 3 self generates the sheet or the needle-like of annular array or helical arrangement or axially-aligned or the water chestnut shape becomes band or the accessory pinna 4 of other shapes, and pipe inside and outside wall 1,3 different shape accessory pinnas 2,4 and arrangement can be made up arbitrarily.

Be axial band shape as Fig. 1 the utility model inside pipe wall 1 accessory pinna 2, the sheet of pipe outer wall 3 accessory pinnas 4 circular array.

Be axial sheet as Fig. 2 the utility model inside pipe wall 1 accessory pinna 2, pipe outer wall 3 accessory pinnas 4 are the band shape of axially-aligned.

Claims

1, a kind of inside and outside tube that is used to strengthen pipe type heat transfer is characterized in that: on inner wall of metal tube (1) and the outer wall (3) accessory pinna (2) (4) is arranged all, and accessory pinna (2) (4) is integral with inner-walls of duct (1) and the direct disposal molding of outer wall (3).

2, a kind of inside and outside tube that is used to strengthen pipe type heat transfer according to claim 1 is characterized in that: inside pipe wall (1) has the accessory pinna (2) of spontaneous axial sheet or axial band shape or axial screw sheet or axial screw band shape.

3, a kind of inside and outside tube that is used to strengthen pipe type heat transfer according to claim 1 and 2 is characterized in that: the accessory pinna (4) that pipe outer wall (3) has spontaneous annular array or helical arrangement or axially-aligned.

4, according to claim 1 or 3 described a kind of inside and outside tubes that are used to strengthen pipe type heat transfer, it is characterized in that: pipe outer wall (3) accessory pinna (4) be shaped as sheet or needle-like or water chestnut shape or band shape.