CN2771785Y

CN2771785Y - Sleeving-pipe type heat exchanger

Info

Publication number: CN2771785Y
Application number: CNU2005200548811U
Authority: CN
Inventors: 邹昌校; 韩跃
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-02-07
Filing date: 2005-02-07
Publication date: 2006-04-12
Anticipated expiration: 2015-02-07

Abstract

The utility model relates to a sleeve pipe type heat exchanger. The utility model is composed of a concentric inner pipe [1] and an outer pipe [2]. The inner pipe [1] and the outer pipe [2] form a circular hollow cavity which is provided with three rib roots [3] with good heat conductivity along the pipe axial direction. The inner pipe [1] and the outer pipe [2] are connected into a whole by the rib roots [3]. The pipe wall of the inner pipe [1] is provided with fins [4] at intervals along the pipe axial direction. The fins [4] and the inner pipe [1] are an integral structure. The utility model has the advantages of high thermal efficiency, large heat exchange surface and high heat exchange efficiency, and is suitable for fields of motive power, energy resource, chemical engineering, refrigeration, etc.

Description

Double pipe heat exchanger

Technical field

The utility model relates to a kind of heat exchanger, particularly a kind of double pipe heat exchanger that is applied to refrigerating field.

Background technology

Double-tube heat exchanger is mainly used in fields such as chemical industry, refrigeration, and it mainly is made up of inside and outside concentric tube, is formed with the twice passage in the interior pipe and between the inner and outer pipe, walks different heat exchange mediums respectively, carries out heat exchange in flow process.In order to improve heat exchanger effectiveness, handle on the heat conductive wall surface of people's heat exchanging device usually, as be processed into screw-like, increases heat exchange area, reaches the purpose that improves heat exchanger effectiveness.But in carrying out heat exchanging process, the heat that outer tube absorbs can't directly will be managed in the heat transferred, thereby influences heat exchanger effectiveness.

Summary of the invention

The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art and provides a kind of heat exchanger effectiveness even more ideal double pipe heat exchanger.

The purpose of this utility model can realize by following technical measures: this heat exchanger is made up of concentric inside and outside metal tube, to being provided with three rib roots that thermal conductivity is good at least, the rib root is connected as a single entity interior pipe and outer tube to the toroidal cavity that interior pipe and outer tube form along tubular axis.

The tube wall of pipe is laid with fin along its axially spaced-apart in being somebody's turn to do, fin and interior Guan Weiyi overall structure, and this fin can be located on the inside and outside surface of interior pipe.

The utility model is reasonable in design, and the rib root good by thermal conductivity connects inner and outer pipes, carries out the inner and outer pipes heat exchange, and the fin that the tube wall of interior pipe is laid has increased heat exchange area, thereby can improve heat exchanger effectiveness.Its processing and fabricating is easy, but one-shot forming is suitable for fields such as power, the energy, chemical industry, refrigeration.

Description of drawings

Fig. 1 is a schematic perspective view of the present utility model;

Fig. 2 is a cross sectional representation of the present utility model.

The specific embodiment

With reference to Fig. 1, Fig. 2, this heat exchanger is made up of concentric inside and outside copper pipe [1], [2], the toroidal cavity that inside and outside copper pipe [1], [2] form along tubular axis to being provided with three rib roots [3] that thermal conductivity is good at least, preferably establish 5～8 rib roots [3], evenly lay at interval along toroidal cavity, rib root [3] connects inside and outside copper pipe [1], [2].This rib root [3] can form with interior copper pipe [1] integral manufacturing, also can form with outer copper pipe [2] integral manufacturing, perhaps is connected as a single entity with inside and outside copper pipe [1], [2] integral manufacturing.

For further improving heat exchanger effectiveness, wall at interior copper pipe [1] longitudinally is laid with the fin [4] that some copper materials are made at interval, fin [4] can be located at the outer surface of interior copper pipe [1], also can be located at the inner surface of interior copper pipe [1], what show among Fig. 1, Fig. 2 is that surfaces externally and internally all evenly is laid with fin [4].Fin [4] is an overall structure with interior copper pipe [1], is convenient to make.

The working face of above-mentioned inside and outside copper pipe [1], [2], rib root [3] and fin [4] all can be processed into screw-like, increases heat exchange area.

Because rib root [3] contacts with inside and outside copper pipe [1], [2], when flowing in the passage that two kinds of different heat exchange mediums form between interior copper pipe [1] lining and inside and outside copper pipe [1], [2], because the temperature difference of heat exchange medium, the heat difference that inside and outside copper pipe [1], [2] absorb, thereby generation temperature difference, because rib root [3] is directly connected between them, absorbing the many wherein copper pipes of heat can be directly with another copper pipe of heat transferred, while rib root surface is neither endothermic nor exothermic also, thereby reaches the purpose that increases heat exchange area and improve heat exchanger effectiveness.

Claims

1, a kind of double pipe heat exchanger, form by concentric interior pipe [1], outer tube [2], it is characterized in that the toroidal cavity that forms at interior pipe [1], outer tube [2] along tubular axis to being provided with three rib roots [3] that thermal conductivity is good at least, rib root [3] is connected as a single entity interior pipe [1] and outer tube [2].

2, double pipe heat exchanger according to claim 1 is characterized in that the tube wall of interior pipe [1] is laid with fin [4] along tubular axis to the interval, and this fin [4] is an overall structure with interior pipe [1].