CN210602949U

CN210602949U - Inner and outer fin type heat exchange tube

Info

Publication number: CN210602949U
Application number: CN201921310108.5U
Authority: CN
Inventors: 赵敏杰
Original assignee: Jiangyin Hehong Precision Technology Co ltd
Current assignee: Jiangyin Hehong special materials Co.,Ltd.
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-05-22
Anticipated expiration: 2029-08-13

Abstract

The utility model relates to an inside and outside fin formula heat exchange tube belongs to heat transfer technical field. Including the heat exchange tube body, several axial lead to the outer recess of elongated (1.2), several outer recess (1.2) set up along heat exchange tube body outer wall hoop even interval, and are adjacent constitute between outer recess (1.2) and lead to long outer ridge (1.1), outer recess (1.2) sets up the outer fin of first row, outer ridge (1.1) sets up the outer fin of second row, several axial lead to long inner groovy (1.3), several inner groovy (1.3) set up along heat exchange tube body (1) inner wall hoop even interval, and are adjacent constitute between inner groovy (1.3) and lead to long inner ridge (1.4), inner groovy (1.3) are gone up and are set up inner fin (4). This application has not only improved heat exchange efficiency, under same operating mode, has reduced the radical of heat exchange tube moreover, reduces the manufacturing cost of heat exchanger.

Description

Inner and outer fin type heat exchange tube

Technical Field

The utility model relates to an inside and outside fin formula heat exchange tube belongs to heat transfer technical field.

Background

The heat exchange tube is one of the elements of the heat exchanger and is used for exchanging heat between two media. In order to improve the heat exchange efficiency, a larger contact area between two media is often needed, and the fin type heat exchange tube increases the outer surface area of the heat exchange tube by adding fins on the tube wall of the heat exchange tube so as to improve the heat exchange efficiency. The heat exchange efficiency of the existing heat exchange tubes, whether the heat exchange tubes are wound fin heat exchange tubes or embedded fin heat exchange tubes, is still not ideal, and scales are easily formed in the tubes to influence the heat transfer efficiency. Therefore, under the same working condition, in order to achieve higher heat exchange efficiency, the number of additional heat exchange tubes needs to be increased, and the cost is increased invisibly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an inside and outside fin formula heat exchange tube is provided to above-mentioned prior art, has bigger heat transfer area, is showing the heat exchange efficiency who improves the heat exchange tube, reduces the radical of heat exchange tube, reduces the cost of heat exchanger.

The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides an inside and outside fin formula heat exchange tube, includes the heat exchange tube body, several axial lead to the outer recess of elongated, several outer recess sets up along the even interval of heat exchange tube body outer wall hoop, and is adjacent constitute between the outer recess and lead to long outer ridge, outer recess sets up the outer fin of first row, outer ridge sets up the outer fin of second row, several axial lead to long inner groovy, several are seted up to heat exchange tube body inner wall the inner groovy sets up along the even interval of heat exchange tube body inner wall hoop, and is adjacent constitute between the inner groovy and lead to long inner ridge, set up interior fin on the inner groovy.

Preferably, a plurality of outer fins of the outer fin of first row are arranged along axial interval, a plurality of outer fins of the outer fin of second row are arranged along axial interval, and the outer fin staggered arrangement of the outer fin of first row and adjacent second row.

Preferably, a plurality of inner warping pieces located on the same inner groove are axially arranged at intervals, and the inner warping pieces on the adjacent inner grooves are arranged in a staggered mode.

Compared with the prior art, the utility model has the advantages of: the utility model provides an effect that interior inside and outside fin formula heat exchange tube, the first row of outer fin on outer recess and the second row of outer fin dislocation arrangement on outer ridge are increasing heat exchange area and extension heat exchange route. The staggered arrangement of the inner fins on the inner grooves has the functions of increasing the heat conduction or heat receiving area and prolonging the conduction path, and the inner ridges have the functions of promoting the turbulence of the medium. The heat exchange efficiency is improved, the number of the heat exchange tubes is reduced under the same working condition, and the production cost of the heat exchanger is reduced.

Drawings

Fig. 1 is a schematic view of an inner and outer fin type heat exchange tube according to an embodiment of the present invention;

fig. 2 is a front view of an inner and outer fin type heat exchange tube according to an embodiment of the present invention;

fig. 3 is a top view of an inner and outer fin type heat exchange tube according to an embodiment of the present invention;

in the figure, a heat exchange tube body 1, an outer ridge 1.1, an outer groove 1.2, an inner groove 1.3, an inner ridge 1.4, an outer fin 2 first columns, an outer fin 3 second columns and an inner fin 4 are arranged.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1, 2 and 3, the inner and outer fin type heat exchange tube in the embodiment includes a heat exchange tube body 1, a plurality of elongated outer grooves 1.2 are formed in the outer wall of the heat exchange tube body 1, and the plurality of outer grooves 1.2 are circumferentially and uniformly arranged along the axis of the heat exchange tube body 1 at intervals, so that elongated outer ridges 1.1 are formed between two adjacent outer grooves 1.2. Set up a plurality of first row outer fin 2 on outer recess 1.2 respectively, a plurality of first row outer fin 2 sets up along the axial interval of heat exchange tube body 1, sets up a plurality of second row outer fin 3 on outer ridge 1.1 respectively, and a plurality of second row outer fin 3 sets up along the axial interval of heat exchange tube body 1, and the outer fin 2 of double-phase adjacent first row and the outer fin 3 staggered arrangement of second row. Several inner groves 1.3 that lead to are seted up to heat exchange tube body 1 is inside, and several inner groves 1.3 set up along 1 axis hoop even interval of heat exchange tube body, and the shaping leads to in the elongated inner ridge 1.4 between two adjacent inner groves 1.3, and the cross section of inner grove 1.3 and inner ridge 1.4 is trapezoidal respectively. Set up a plurality of inner fin 4 on inner groove 1.3 respectively, and the inner fin of a plurality of sets up along 1 axial interval of heat exchange tube body, and the inner fin 4 dislocation arrangement on the double-phase adjacent inner groove 1.3 forms inside and outside fin formula heat exchange tube.

The width of the outer groove 1.2 is greater than the width of the inner groove 1.3.

The staggered arrangement of the first row of outer fins 2 on the outer groove 1.2 and the second row of outer fins 3 on the outer ridge 1.1 has the effect of increasing the heat exchange area and prolonging the heat exchange path. The staggered arrangement of the inner fins 4 on the inner grooves 1.3 has the functions of increasing the heat conduction or heat receiving area and prolonging the conduction path, and the inner ridges 1.4 have the functions of promoting the turbulence of the medium. The heat exchange efficiency is improved, the number of the heat exchange tubes is reduced under the same working condition, and the production cost of the heat exchanger is reduced.

In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. The utility model provides an inside and outside fin formula heat exchange tube, includes heat exchange tube body (1), its characterized in that: several axial lead to outer recess of elongated (1.2), several outer recess (1.2) are seted up to heat exchange tube body (1) outer wall and set up along heat exchange tube body outer wall hoop even interval, and are adjacent constitute between outer recess (1.2) and lead to long outer ridge (1.1), outer recess (1.2) set up the outer fin of first row, outer ridge (1.1) sets up the outer fin of second row, several axial lead to long inner groovy (1.3), several inner groovy (1.3) set up along heat exchange tube body (1) inner wall hoop even interval, and are adjacent constitute between inner groovy (1.3) and lead to long inner ridge (1.4), inner groovy (1.3) are gone up and are set up inner fin (4).

2. An internally and externally finned heat exchange tube according to claim 1, wherein: a plurality of outer fins of fin (2) outside first row are arranged along axial interval, a plurality of outer fins of fin (3) outside the second row are set up along axial interval, and the fin dislocation arrangement outside first row and adjacent second row.

3. An internally and externally finned heat exchange tube according to claim 1, wherein: the inner warping pieces (4) are located on the same inner groove (1.3) and are axially arranged at intervals, and the inner warping pieces (4) on the inner groove (1.3) are arranged in a staggered mode.