CN2347133Y

CN2347133Y - High effective heat transfering tube with inner fins

Info

Publication number: CN2347133Y
Application number: CN 98242440
Authority: CN
Inventors: 朱惠元; 张培清
Original assignee: LINGTONG MACHINERY PLANT WUXI CITY
Current assignee: LINGTONG MACHINERY PLANT WUXI CITY
Priority date: 1998-10-20
Filing date: 1998-10-20
Publication date: 1999-11-03
Anticipated expiration: 2008-10-20

Abstract

The utility model discloses a high efficiency heat exchange tube with inner fins. The utility model is composed of an inner tube, an outer tube, inner fins, a plug head, etc. The inner fins are not only provided with a plurality of big and small arc-shaped folding, but also are punched and provided with a plurality of waves in the axial direction. The utility model has the advantages of compact structure, reasonable design, high speed and good effect.

Description

The inner fin efficient heat-exchanging pipe

The utility model relates to a kind of metal heat exchanger tube that is used for gas and liquid heat-exchange.

Traditional heat exchanger tube fin is arranged on the metal tube outer wall, and its shortcoming is that volume is bigger, must open on the cooler casing during installation outside the large rectangle hole fin heat exchange pipe just can put man-machine in, influence casing rigidity, the heat exchange effect is relatively poor.Interior radiation core heat exchanger tube after the improvement is the spoke type tube core of pressing human copper material or aluminium rolling in metal tube, gas body in the pipe, pipe outflow liquid, but it is limited that the heat exchanger tube heat exchange area of this structure increases, wingization only is 2-3 than (the total internal surface area of finned tube/light pipe internal surface area), and gas can only lead directly to, and can not bend, and the heat exchange effect improves not obvious.

The purpose of this utility model provides a seed wingization than high, and the heat transfer rate is fast, and is effective, and volume is little, metal inner fin heat exchanger tube easy to use.

Main technical schemes of the present utility model is a pipe 3 in being provided with in outer tube 1, between outer tube 1 and the interior pipe 3 fin 2 is arranged, and there is plug 4 end of interior pipe 3.

Fin 2 of the present utility model is formed by a plurality of continuous big or small gardens arcuation is folding.Fin 2 has unrestrained waveform projection in axial punch.

Because fin of the present utility model is arranged between outer tube and the interior pipe, fin not only has a plurality of big or small gardens arcuation folding, and axially be punched in several waves, when heat exchanging fluid flows between the fin of two pipe layers, can making fluid constantly change direction, bending is advanced, be low reynolds number flow, mix and disturbance, effectively improve the heat convection system of air-flow to strengthen, so the heat transfer rate is fast, effective.Again since the utility model when using air-flow walk tube side, the liquid shell side that flows away, it is little to account for a space, can avoid cooler casing to open the large rectangle hole, improves casing rigidity and heat exchange effect.

Accompanying drawing 1 is the utility model structural representation.

Accompanying drawing 2 is the A-A cutaway view of Fig. 1.

Accompanying drawing 3 is that the S of Fig. 2 is to view.

Accompanying drawing 4 is the P-P profile of Fig. 3.

Further describe the utility model below in conjunction with drawings and Examples.

Outer tube 1 can be made of stainless-steel seamless pipe, and the admirality brass that interior pipe 3 usefulness corrosion resistances are good is made.Fin 2 between outer tube 1 and the interior pipe 3 is that copper belt is shaped through the punching press bending, is the major part that forms expanding area.Referring to accompanying

drawing

2,4, fin 2 is formed by a plurality of continuous big or small gardens arcuation is folding.If have in individual waveform projection from the axial punching out of accompanying drawing 3 visible fin 2, make the air-flow in the tube side constantly change direction, bending is advanced, to improve heat exchange efficiency.3 supports as fin 2 of interior pipe guarantee that fin 2 closely contacts with outer tube 1.Plug 4 solderings are in the end of interior pipe 3, short circuit when preventing the air-flow heat exchange.

The air-flow bending was advanced when the utility model used, and flowed along the certain frictional dissipation of Cheng Huiyou in pipe, promptly produced the certain pressure loss, can strengthen outer tube caliber or pressure during design, with loss control in the reasonable scope.

Claims

1, inner fin efficient heat-exchanging pipe is characterized by and is provided with interior pipe 3 in the outer tube 1, between outer tube 1 and the interior pipe 3 fin 2 is arranged, and there is plug 4 end of interior pipe 3.

2,, it is characterized by said fin 2 and form by a plurality of continuous big or small gardens arcuation is folding by the described inner fin efficient heat-exchanging pipe of claim 1.

3, by claim 1,2 described inner fin efficient heat-exchanging pipes, it is characterized by fin 2 has the waveform projection in axial punching out.