CN203177709U - Inner and outer finned flat tube for air cooler and heat exchanger - Google Patents

Inner and outer finned flat tube for air cooler and heat exchanger Download PDF

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Publication number
CN203177709U
CN203177709U CN 201320208255 CN201320208255U CN203177709U CN 203177709 U CN203177709 U CN 203177709U CN 201320208255 CN201320208255 CN 201320208255 CN 201320208255 U CN201320208255 U CN 201320208255U CN 203177709 U CN203177709 U CN 203177709U
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CN
China
Prior art keywords
fin
tube
parent tube
heat exchanger
air cooler
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320208255
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Chinese (zh)
Inventor
黄荣锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEIJING KAIDEFEI COOLER MANUFACTURING Co Ltd
Original Assignee
BEIJING KAIDEFEI COOLER MANUFACTURING Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BEIJING KAIDEFEI COOLER MANUFACTURING Co Ltd filed Critical BEIJING KAIDEFEI COOLER MANUFACTURING Co Ltd
Priority to CN 201320208255 priority Critical patent/CN203177709U/en
Application granted granted Critical
Publication of CN203177709U publication Critical patent/CN203177709U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to an inner and outer finned flat tube for an air cooler and a heat exchanger. The inner and outer finned flat tube comprises a base tube, inner fins and outer fins, the base tube is a flat tube, the section structure of the base tube is provided with two parallel flat tube walls, two ends of each flat tube wall are connected through an arc-shaped tube wall, the inner fins are arranged in an inner cavity of the base tube and are connected with the inner wall of the base tube, the inner cavity of the base tube is divided into a plurality of channels in the extending direction by the inner fins, the inner fins and the base tube are integrally machined, and the outer fins are arranged on the outer walls of the two flat tube walls of the base tube and are connected with the outer walls of the base tube by brazing. The inner and outer finned flat tube has the advantages that the inner fins are additionally arranged inside the base tube, so that stability and strength of the base tube can be enhanced, deformation of the base tube in the length direction is decreased, the inner fins can function in guiding flow, the flow speed of a thermal medium inside the flat tube is more uniform, turbulent flow can be formed at a low flow speed, phase change heat transfer is more sufficient when phase change heat transfer is performed, and heat transfer effects are better.

Description

The flat pipe of a kind of inside and outside fin for air cooler and heat exchanger
Technical field
The utility model belongs to heat exchanger tube, relates in particular to the flat pipe of a kind of inside and outside fin for air cooler and heat exchanger.
Background technology
Finned tube is a kind of heat exchange element in the air cooler, also widely applies in other heat exchange products simultaneously, has the high characteristic of heat exchange efficiency.But existing finned tube has only considered that the design of the outer fin of pipe is to strengthen the heat transfer of gas side, and when undergoing phase transition in the flowability of tube fluid particularly managed, heat conduction reinforced after the phase transformation considered, owing to be subjected to the restriction of the factors such as geometry of tube passage, condensate liquid is difficult to be uniformly distributed in the pipe after the phase transformation, causes the decline of such air cooler cooling capacity; For no phase transformation cooling occasion in the pipe, no augmentation of heat transfer measure in the pipe, the overall heat transfer effect is poorer; Traditional finned tube adopts the structure of interspersed fin bundle, easily produces the slit between fin bundle and heat exchanger tube, form thermal contact resistance, thereby heat exchange efficiency is lower.Because several heat exchanger tubes are sleeved on the fin, cause the compactness of equipment relatively poor, floor space is bigger.
Summary of the invention
The purpose of this utility model is the technical scheme that proposes a kind of flat pipe of inside and outside fin for air cooler and heat exchanger.
To achieve these goals, the technical solution of the utility model is: the flat pipe of a kind of inside and outside fin for air cooler and heat exchanger comprises parent tube, inner fin, outer fin; Described parent tube is the pancake pipe, the section structure of parent tube is two parallel flat tube walls that two ends are connected by the circular arc tube wall, described inner fin is arranged in the inner chamber of parent tube, inner fin is connected with the inwall of parent tube, inner fin is separated into a plurality of passages with the inner chamber of parent tube in extension side, described outer fin is arranged on the outer wall of two flat tube walls of parent tube, and outer fin is connected by soldering with the outer wall of parent tube.
Further, described inner fin is uniformly distributed in the inner chamber of parent tube, and the channel shape that described inner fin is separated into the parent tube inner chamber is circle, waveform, a kind of in square; The whole machine-shaping of inner fin and parent tube.
Further, the cross sectional shape of described outer fin is a kind of in snakelike, LL shape, G shape, the KL shape, and the bearing of trend of outer fin and the bearing of trend of described parent tube are provided with angle.
Further, the bearing of trend of the bearing of trend of described outer fin and described parent tube is provided with 90 ° of angles.
Further, the wall thickness of described parent tube is 1.0mm~1.5mm, and the width of the flat tube wall of described parent tube is 150mm~220mm, and the spacing of two flat tube walls of parent tube is 5mm~10mm, and the length of parent tube is 3m~15m.
Further, the thickness of described outer fin is 0.5mm, and the height that outer fin stretches out the parent tube outer wall is 10mm~25mm.
Further, but the material of described parent tube, inner fin, outer fin is brazing metal of the same race.
Further, the material of described parent tube, inner fin, outer fin is aluminium alloy.
The beneficial effects of the utility model are: at the inner inner fin that increases of parent tube, be conducive to strengthen stability and the intensity of parent tube, reduce the distortion on the parent tube length direction, and can resist the unstable phenomenon that parent tube external and internal pressure difference causes; It is that thermal medium is more even at the inner flow velocity of flat tube that inner fin can play drainage, can form turbulent flow under low flow velocity, and make phase-change heat transfer more abundant when phase-change heat transfer is arranged, and the heat exchange effect is better.
Adopt global formation between inner fin and the parent tube, reduce welding cost, and avoid the generation of thermal contact resistance.
Adopt the soldering welding between outer fin and the parent tube, welding effect is good, and is more firm than other fin connected modes, and can not produce thermal contact resistance.
Parent tube, inner fin, outer fin adopt material of the same race, can effectively improve the welding security, and the fin obscission of avoiding different materials thermal coefficient of expansion difference to cause.
The selection of material is aluminium and aluminium alloy, and is in light weight, and resistance to corrosion is strong, and cost of investment is low.
Below in conjunction with drawings and Examples the utility model being done one describes in detail.
Description of drawings
Fig. 1 is the utility model structure chart;
Fig. 2 is that the utility model parent tube passage is separated into square sectional drawing;
Fig. 3 is that the utility model parent tube passage is separated conglobate sectional drawing;
Fig. 4 is that the utility model parent tube passage is separated into corrugated sectional drawing.
The specific embodiment
As Fig. 1, Fig. 2, the flat pipe of a kind of inside and outside fin for air cooler and heat exchanger comprises parent tube 1, inner fin 2, outer fin 3; Described parent tube is the pancake pipe, the section structure of parent tube is two parallel flat tube walls that two ends are connected by the circular arc tube wall, the wall thickness of parent tube is 1.0mm~1.5mm, the width W of the flat tube wall of described parent tube is 150mm~220mm, the spacing B of two flat tube walls of parent tube is 5mm~10mm, and the length of parent tube is 3m~15m.
Described inner fin is arranged in the inner chamber of parent tube, and inner fin is connected with the inwall of parent tube, and inner fin is separated into a plurality of passages with the inner chamber of parent tube in extension side, and channel shape is circle, waveform, a kind of in square; The whole machine-shaping of inner fin and parent tube.
Described outer fin is arranged on the outer wall of two flat tube walls of parent tube, and outer fin is connected by soldering with the outer wall of parent tube.The cross sectional shape of outer fin is a kind of in snakelike, LL shape, G shape, the KL shape, and the bearing of trend of outer fin and the bearing of trend of described parent tube are provided with included angle A; Normally 90 ° of described angles.The thickness of described outer fin is 0.5mm, and the height H that outer fin stretches out the parent tube outer wall is 10mm~25mm.
But the material of described parent tube, inner fin, outer fin is brazing metal of the same race; Usually adopt aluminum or aluminum alloy.
Embodiment one,
As Fig. 1, Fig. 2, the flat pipe of a kind of inside and outside fin for air cooler and heat exchanger comprises parent tube 1, inner fin 2, outer fin 3; Described parent tube is the pancake pipe, the section structure of parent tube is two parallel flat tube walls that two ends are connected by the circular arc tube wall, and the wall thickness of parent tube is 1.0mm, and the width W of the flat tube wall of described parent tube is 150mm, the spacing B of two flat tube walls of parent tube is 5mm, and the length of parent tube is 3m.
Described inner fin is separated into a plurality of passages with the inner chamber of parent tube in extension side, channel shape is square.
The cross sectional shape of described outer fin is snakelike, and the bearing of trend of outer fin and the bearing of trend of described parent tube are provided with included angle A=90 °, and the thickness of outer fin is 0.5mm, and the height H that outer fin stretches out the parent tube outer wall is 10mm.
The material of described parent tube, inner fin, outer fin is aluminium alloy.
Embodiment two,
As Fig. 3, the flat pipe of a kind of inside and outside fin for air cooler and heat exchanger has the parent tube identical with embodiment one and outer fin, and described inner fin is separated into a plurality of passages with the inner chamber of parent tube in extension side, and channel shape is circle.
The material of described parent tube, inner fin, outer fin is aluminium alloy.
Embodiment three,
As Fig. 4, the flat pipe of a kind of inside and outside fin for air cooler and heat exchanger has the parent tube identical with embodiment one and outer fin, and described inner fin is separated into a plurality of passages with the inner chamber of parent tube in extension side, and channel shape is waveform shape.
The material of described parent tube, inner fin, outer fin is aluminium alloy.

Claims (8)

1. the flat pipe of inside and outside fin that is used for air cooler and heat exchanger comprises parent tube, inner fin, outer fin; It is characterized in that, described parent tube is the pancake pipe, the section structure of parent tube is two parallel flat tube walls that two ends are connected by the circular arc tube wall, described inner fin is arranged in the inner chamber of parent tube, inner fin is connected with the inwall of parent tube, inner fin is separated into a plurality of passages with the inner chamber of parent tube in extension side, described outer fin is arranged on the outer wall of two flat tube walls of parent tube, and outer fin is connected by soldering with the outer wall of parent tube.
2. the flat pipe of a kind of inside and outside fin for air cooler and heat exchanger according to claim 1, it is characterized in that, described inner fin is uniformly distributed in the inner chamber of parent tube, and the channel shape that described inner fin is separated into the parent tube inner chamber is circle, waveform, a kind of in square; The whole machine-shaping of inner fin and parent tube.
3. the flat pipe of a kind of inside and outside fin for air cooler and heat exchanger according to claim 1, it is characterized in that, the cross sectional shape of described outer fin is a kind of in snakelike, LL shape, G shape, the KL shape, and the bearing of trend of outer fin and the bearing of trend of described parent tube are provided with angle.
4. the flat pipe of a kind of inside and outside fin for air cooler and heat exchanger according to claim 3 is characterized in that the bearing of trend of described outer fin and the bearing of trend of described parent tube are provided with 90 ° of angles.
5. the flat pipe of a kind of inside and outside fin for air cooler and heat exchanger according to claim 1, it is characterized in that, the wall thickness of described parent tube is 1.0mm~1.5mm, the width of the flat tube wall of described parent tube is 150mm~220mm, the spacing of two flat tube walls of parent tube is 5mm~10mm, and the length of parent tube is 3m~15m.
6. the flat pipe of a kind of inside and outside fin for air cooler and heat exchanger according to claim 1 is characterized in that the thickness of described outer fin is 0.5mm, and the height that outer fin stretches out the parent tube outer wall is 10mm~25mm.
7. the flat pipe of a kind of inside and outside fin for air cooler and heat exchanger according to claim 1 it is characterized in that, but the material of described parent tube, inner fin, outer fin is brazing metal of the same race.
8. the flat pipe of a kind of inside and outside fin for air cooler and heat exchanger according to claim 1 is characterized in that the material of described parent tube, inner fin, outer fin is aluminium alloy.
CN 201320208255 2013-04-23 2013-04-23 Inner and outer finned flat tube for air cooler and heat exchanger Expired - Fee Related CN203177709U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320208255 CN203177709U (en) 2013-04-23 2013-04-23 Inner and outer finned flat tube for air cooler and heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320208255 CN203177709U (en) 2013-04-23 2013-04-23 Inner and outer finned flat tube for air cooler and heat exchanger

Publications (1)

Publication Number Publication Date
CN203177709U true CN203177709U (en) 2013-09-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320208255 Expired - Fee Related CN203177709U (en) 2013-04-23 2013-04-23 Inner and outer finned flat tube for air cooler and heat exchanger

Country Status (1)

Country Link
CN (1) CN203177709U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106595339A (en) * 2016-10-17 2017-04-26 平湖迈柯罗新材料有限公司 Heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106595339A (en) * 2016-10-17 2017-04-26 平湖迈柯罗新材料有限公司 Heat exchanger

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130904

Termination date: 20190423

CF01 Termination of patent right due to non-payment of annual fee