CN110686549A - Multi-runner rectangular fin flat tube and heat exchanger - Google Patents
Multi-runner rectangular fin flat tube and heat exchanger Download PDFInfo
- Publication number
- CN110686549A CN110686549A CN201911072177.1A CN201911072177A CN110686549A CN 110686549 A CN110686549 A CN 110686549A CN 201911072177 A CN201911072177 A CN 201911072177A CN 110686549 A CN110686549 A CN 110686549A
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- Prior art keywords
- flat tube
- rectangular fin
- flat
- runner
- heat exchanger
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/30—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being attachable to the element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing means
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a multi-runner rectangular fin flat tube and a heat exchanger, which comprises: a flat tube body; the fins are respectively arranged on the upper surface and the lower surface of the flat pipe body. The fins are respectively brazed on the upper surface and the lower surface of the flat pipe body. The quantity of strengthening rib is many, and many strengthening ribs divide into many flowing cavity passageways with flat tub of body. Compared with the prior art, the invention has the following advantages: set up the strengthening rib in flat this internal, directly increase heat transfer surface area from this, improve heat exchange efficiency, and have great reinforcement to heat transfer pipe fitting and heat exchanger equipment intensity, effectively prevented flat pipe because of the pressurized influence that the circulation passageway is not enough brought that causes, improved equipment life. The process of processing the finned tube in a vacuum brazing furnace or a nitrogen protection continuous furnace is adopted, and rectangular fins are symmetrically and additionally arranged outside a pipeline body. The O-shaped ring processing technology is adopted to process the multi-runner rectangular fin flat tubes into parallel tube bundles, so that the arrangement is reasonable.
Description
Technical Field
The invention relates to the technical field of heat exchange, in particular to a multi-channel rectangular fin flat tube and a heat exchanger.
Background
The development and manufacturing technology of novel efficient heat exchangers has been a hotspot of research in the field of energy utilization, and is directly related to the energy utilization rate of engineering industries such as mines, petroleum, chemical engineering, metallurgy, electric power, heating power and the like.
At present, a large number of plate-fin heat exchangers are used in mine, petroleum, chemical industry, metallurgy, electric power, heating power and other engineering industries, water is used as a heat transfer medium in a fluid channel of the plate-fin heat exchanger, and heat conduction and heat convection are realized through a substrate and outside air. The heat exchanger has the advantages of simple design and manufacture, and the defects of poor heat exchange effect, large equipment volume, unreasonable structure, large occupied space, large material consumption, large investment and higher equipment cost and operation cost.
According to the heat transfer theory, in order to enhance the heat transfer of the air side, fins are usually additionally arranged outside a heat exchange tube bundle, the ribbing coefficients of the fins of a rectangular fin group are fully utilized, the heat transfer is enhanced by an expanded heat transfer surface, meanwhile, in order to improve the utilization efficiency of the fins, the fluid turbulence speed among the fins is fully optimized, a better enhanced heat transfer effect can be obtained, and fin channels are reasonably arranged on the surface of a substrate according to the field installation position and the adoption of a natural ventilation or mechanical ventilation cooling mode.
In the aspect of technical performance, the flat heat exchange tube has higher heat transfer speed, so the flat heat exchange tube is widely applied to heat dissipation of elements such as electrons and motors with larger heat productivity. However, the existing flat pipe is unreasonable in structure, limited in inner space of the pipeline, and deformed after being loaded, so that the flow resistance of the fluid in the flat pipe is large, the flat pipe is limited by insufficient circulation channels, and the adverse effect of reducing the heat exchange efficiency is caused.
In the prior art, Chinese patent finned tube (publication number: 203405110U) is mainly applied to indirect air cooling systems of power stations. The air conditioner is formed by mutually connecting one or more than two long flat tubes which are arranged in parallel and in a single row and fins which extend along the flowing direction of air, wherein the long flat tubes (1) have long cross sections in the flowing direction of the air, the length (L) of each long cross section is several times larger than the width (W) of each long cross section, and the long cross sections are divided into a plurality of medium flowing channels by vertical partition plates (2). When the finned tube is used for heat exchange, air flows outside the tube, and media such as water flow inside the porous flat tube and exchange heat with air outside the tube. The novel finned tube has the advantages of small air side resistance, high heat exchange efficiency, easiness in cleaning and the like.
The prior art has the following defects:
1) according to the technical scheme, the cross section of the middle finned tube along the direction of airflow is long, and the shape can form large resistance to the airflow, so that the resistance of the heat exchanger is increased, and the air intake is reduced;
2) according to the middle finned tube in the technical scheme, the flat tube is thin in wall thickness and is difficult to use in a pressure-bearing working condition;
2) the finned tube structure of the technical scheme is practically consistent with a cross-flow plate-fin heat exchanger in the heat exchanger industry, and the cross-flow plate-fin heat exchanger commonly used in the industry is formed by stacking and then brazing a multi-channel flat tube and a fin, so that the size of the heat exchanger depends on the caliber of a vacuum furnace. In the invention, after the single heat exchange tube is independently brazed, the O-shaped ring structure is used, and the tube plate is positioned and fixed to form the heat exchanger tube bundle. Because the heat exchange tube can be independently brazed, the size of the manufactured heat exchanger is not limited by the caliber of the vacuum furnace.
Disclosure of Invention
In view of the above technical problems, an object of the present invention is to provide a multi-channel rectangular fin flat tube and a heat exchanger, which solve the above technical problems.
In order to solve the technical problem, the multi-runner rectangular fin flat tube of the invention comprises: a flat tube body; the fins are arranged on the upper surface and the lower surface of the flat pipe body respectively.
Preferably, the fins are respectively brazed on the upper surface and the lower surface of the flat tube body.
Preferably, this internal strengthening rib that is equipped with of flat tub, the strengthening rib is followed the length of flat tub of body runs through the setting and is in inside the flat tub of body.
The outer two sides of the flat pipe body are arc-shaped edges.
Preferably, the number of the reinforcing ribs is multiple, and the flat pipe body is divided into multiple flow cavity channels by the multiple reinforcing ribs.
The utility model provides a multi-flow channel rectangular fin flat tube heat exchanger, includes: a multi-runner rectangular fin flat tube structure; the upper cover plate and the lower cover plate are respectively arranged on the upper surface and the lower surface of the multi-runner rectangular fin flat tube; the left end socket and the right end socket are arranged at two ends of the multi-runner rectangular fin flat tube; the sealing assemblies are respectively arranged between the left seal head and the right seal head and the multi-channel rectangular fin flat tube; the multi-runner rectangular fin flat tube structure is formed by stacking a plurality of multi-runner rectangular fin flat tubes.
Preferably, the sealing assembly comprises a sealing unit and an O-ring disposed within the sealing unit.
Preferably, the sealing unit comprises two orifice plates which are arranged oppositely, and the O-shaped ring is arranged between the two orifice plates.
Preferably, a plate hole is formed in the orifice plate, and the O-shaped ring corresponds to the plate hole.
Compared with the prior art, the invention has the following advantages:
1) set up the strengthening rib in flat this internal, directly increase heat transfer surface area from this, improve heat exchange efficiency, and have great reinforcement to heat transfer pipe fitting and heat exchanger equipment intensity, effectively prevented flat pipe because of the pressurized influence that the circulation passageway is not enough brought that causes, improved equipment life.
2) The process of processing the finned tube in the vacuum brazing furnace is adopted, and the rectangular fins are symmetrically and additionally arranged outside the pipeline body.
3) The O-shaped ring processing technology is adopted to process the multi-runner rectangular fin flat tubes into the parallel tube bundles, so that the arrangement is flexible, and the finished products can be detached during maintenance and replacement.
Drawings
Other characteristic objects and advantages of the invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following figures.
FIG. 1 is a schematic structural view of a multi-runner rectangular fin flat tube according to the present invention;
fig. 2 is an exploded view of the multi-runner rectangular fin flat tube heat exchanger of the present invention.
In the figure:
1-flat tube body 2-fin 3-reinforcing rib
4-O-shaped ring 5-upper cover plate 6-lower cover plate
7-left end socket 8-right end socket 9-pore plate
10-plate hole
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention.
At present, a large number of plate-fin heat exchangers are used in mine, petroleum, chemical industry, metallurgy, electric power, heating power and other engineering industries, water is used as a heat transfer medium in a fluid channel of the plate-fin heat exchanger, and heat conduction and heat convection are realized through a substrate and outside air. The heat exchanger has the advantages of simple design and manufacture, and the defects of poor heat exchange effect, large equipment volume, unreasonable structure, large occupied space, large material consumption, large investment and higher equipment cost and operation cost.
(3) According to the heat transfer theory, in order to enhance the heat transfer of the air side, fins are usually additionally arranged outside a heat exchange tube bundle, the ribbing coefficients of the fins of a rectangular fin group are fully utilized, the heat transfer is enhanced by an expanded heat transfer surface, meanwhile, in order to improve the utilization efficiency of the fins, the fluid turbulence speed among the fins is fully optimized, a better enhanced heat transfer effect can be obtained, and fin channels are reasonably arranged on the surface of a substrate according to the field installation position and the adoption of a natural ventilation or mechanical ventilation cooling mode.
(4) In the aspect of technical performance, the flat heat exchange tube has higher heat transfer speed, so the flat heat exchange tube is widely applied to heat dissipation of elements such as electrons and motors with larger heat productivity. However, the existing flat pipe is unreasonable in structure, limited in inner space of the pipeline, and deformed after being loaded, so that the flow resistance of the fluid in the flat pipe is large, the flat pipe is limited by insufficient circulation channels, and the adverse effect of reducing the heat exchange efficiency is caused.
(5) In the manufacturing process, the traditional method utilizes a tube expansion method and a welding mode, but the invention processes a single or a few multi-runner rectangular fin flat tubes in a vacuum brazing furnace or a nitrogen protection continuous furnace, and then adopts an O-shaped ring processing process to manufacture the multi-runner rectangular fin flat tube bundle.
The heat exchange device aims to solve the defects that the existing heat exchange device is low in heat exchange efficiency, large in equipment size, unreasonable in structure, limited in strength, large in occupied space, large in material consumption, large in investment cost and high in equipment cost and operation cost.
As shown in fig. 1 and 2, the multi-runner rectangular fin flat tube of the invention is manufactured by adopting a process of processing a finned tube in a vacuum brazing furnace on the basis of a common flat tube body 1. The reinforcing ribs 3 are added inside the flat pipe body 1 and run through the whole flat pipe body 1, have the function of bearing pressure and can be used for preventing the influence caused by insufficient steam flow channels due to the fact that the flat pipe body 1 is pressed. The cavity of the flat tube body 1 is formed by arranging the reinforcing ribs 3 to divide the inner pipeline into a plurality of flowing cavity channels, so that the flowing space of fluid in the tube is directly increased, the heat exchange surface area is enhanced, and the heat exchange coefficient is directly improved. The rectangular fins 2 adopt an O-shaped ring processing technology to process the multi-runner rectangular fin flat tubes into parallel tube bundles, so that the arrangement is reasonable.
The invention relates to a multi-runner rectangular fin flat tube heat exchanger, which comprises: the multi-runner rectangular fin flat tube structure comprises a multi-runner rectangular fin flat tube structure, an upper cover plate 5, a lower cover plate 6, a left seal head 7, a right seal head 8 and a sealing assembly, wherein the multi-runner rectangular fin flat tube structure is formed by stacking a plurality of multi-runner rectangular fin flat tubes.
The sealing assembly comprises two pore plates 9 which are oppositely arranged, and the O-shaped ring 4 is arranged between the two pore plates 9. Meanwhile, a plate hole 10 is formed in the orifice plate 9, and the O-shaped ring 4 corresponds to the plate hole 10 to form sealing.
As a novel heat exchanger element for enhancing heat transfer, the multi-runner rectangular fin flat tube is compared with other common flat tube pipelines used at present:
1) the multi-runner rectangular fin flat tube is characterized in that on the basis of a common flat tube, a process of processing a single or a few finned tubes in a vacuum brazing furnace or a nitrogen protection continuous furnace is adopted, and rectangular fins are symmetrically and additionally arranged outside a pipeline;
2) the pipeline is internally provided with a reinforcing rib which runs through the whole pipeline, has the function of bearing pressure and can be used for preventing the influence caused by insufficient steam flow channel due to the fact that the pipeline is pressed;
3) the strengthening rib separates into many flowing cavity passageways with inner pipeline, has directly increased intraductal fluid flow space, when having strengthened the heat transfer, has effectively prevented that flat pipe from causing the not enough influence that brings of circulation passageway because of the pressurized.
The O-shaped ring processing technology is adopted to process the multi-runner rectangular fin flat tubes into the parallel tube bundles, so that the parallel tube bundles can be freely and flexibly arranged, and when a single heat exchanger is blocked, the single heat exchange tube can be detached and replaced.
4) The two sides of the outer part of the flat pipe adopt arc edges, so that the resistance of the windward side of the flat pipe is reduced.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (9)
1. The utility model provides a multi-flow channel rectangular fin flat tube which characterized in that includes:
a flat tube body;
the fins are arranged on the upper surface and the lower surface of the flat pipe body respectively.
2. The multi-flow channel rectangular fin flat tube as claimed in claim 1, wherein said fins are brazed to the upper and lower surfaces of said flat tube body, respectively.
3. The multi-runner rectangular fin flat tube as claimed in claim 1, wherein a reinforcing rib is provided in the flat tube body, and the reinforcing rib is provided inside the flat tube body along the length of the flat tube body.
4. The multi-runner rectangular fin flat tube as claimed in claim 3, wherein both outer sides of the flat tube body are circular arc edges.
5. The multi-runner rectangular fin flat tube as claimed in claim 3, wherein the number of the reinforcing ribs is plural, and the plural reinforcing ribs divide the flat tube body into plural flow cavity channels.
6. The utility model provides a flat tub of heat exchanger of multithread way rectangle fin which characterized in that includes:
a multi-runner rectangular fin flat tube structure;
the upper cover plate and the lower cover plate are respectively arranged on the upper surface and the lower surface of the multi-runner rectangular fin flat tube;
the left end socket and the right end socket are arranged at two ends of the multi-runner rectangular fin flat tube;
the sealing assemblies are respectively arranged between the left seal head and the right seal head and the multi-channel rectangular fin flat tube; wherein
The multi-runner rectangular fin flat tube structure is formed by stacking a plurality of multi-runner rectangular fin flat tubes; the multi-runner rectangular fin flat tube is the multi-runner rectangular fin flat tube claimed in any one of claims 1 to 5.
7. The multi-flow channel, rectangular fin and flat tube heat exchanger of claim 6, wherein the seal assembly comprises a seal unit and an O-ring disposed within the seal unit.
8. The heat exchanger as claimed in claim 7, wherein the sealing unit comprises two orifice plates disposed opposite to each other, and the O-ring is disposed between the two orifice plates.
9. The heat exchanger as claimed in claim 8, wherein plate holes are formed on the orifice plate, and the O-rings are corresponding to the plate holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911072177.1A CN110686549A (en) | 2019-11-05 | 2019-11-05 | Multi-runner rectangular fin flat tube and heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911072177.1A CN110686549A (en) | 2019-11-05 | 2019-11-05 | Multi-runner rectangular fin flat tube and heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110686549A true CN110686549A (en) | 2020-01-14 |
Family
ID=69116683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911072177.1A Pending CN110686549A (en) | 2019-11-05 | 2019-11-05 | Multi-runner rectangular fin flat tube and heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110686549A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111238263A (en) * | 2020-03-18 | 2020-06-05 | 无锡市冠云换热器有限公司 | Plate-fin heat exchanger set |
| CN113532163A (en) * | 2021-08-30 | 2021-10-22 | 北京龙源泽丰环保科技有限公司 | Air-cooled heat exchanger and assembling method |
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| CN102829665A (en) * | 2012-09-17 | 2012-12-19 | 范良凯 | Multi-runner aluminum flat pipe for heat radiation |
| CN103134368A (en) * | 2012-11-14 | 2013-06-05 | 北京龙源冷却技术有限公司 | Finned tube and heat exchanger and manufacturing method of heat exchanger |
| CN203672215U (en) * | 2013-10-29 | 2014-06-25 | 甘肃蓝科石化高新装备股份有限公司 | Heat exchanging device heat transmission assembly used for oil refining, chemical engineering power industries |
| CN104534897A (en) * | 2014-12-29 | 2015-04-22 | 浙江华森散热器制造有限公司 | Expansion pipe type car heat radiator |
| CN105158293A (en) * | 2015-10-10 | 2015-12-16 | 中国石油化工股份有限公司 | Visual testing system for heat transfer and scale inhibition property of oil sealing water cooler of oil refining device |
| CN206274214U (en) * | 2016-12-03 | 2017-06-23 | 合肥升园汽车配件有限公司 | A kind of auxiliary seal antiseep collecting pipe of air-conditioning condenser for automobile |
| CN109470073A (en) * | 2018-10-12 | 2019-03-15 | 全椒赛德利机械有限公司 | Flat tube copper radiator |
-
2019
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040261986A1 (en) * | 2003-06-27 | 2004-12-30 | Norsk Hydro A.S. | Method of forming heat exchanger tubing and tubing formed thereby |
| CN200944013Y (en) * | 2006-07-24 | 2007-09-05 | 内蒙古北方重型汽车股份有限公司 | Heat radiator with replaceable heat radiating chip for heavy mine dump truck |
| CN101368800A (en) * | 2008-09-24 | 2009-02-18 | 东华大学 | Longitudinal finned flat tube heat exchanger and manufacturing method thereof |
| CN102829665A (en) * | 2012-09-17 | 2012-12-19 | 范良凯 | Multi-runner aluminum flat pipe for heat radiation |
| CN103134368A (en) * | 2012-11-14 | 2013-06-05 | 北京龙源冷却技术有限公司 | Finned tube and heat exchanger and manufacturing method of heat exchanger |
| CN203672215U (en) * | 2013-10-29 | 2014-06-25 | 甘肃蓝科石化高新装备股份有限公司 | Heat exchanging device heat transmission assembly used for oil refining, chemical engineering power industries |
| CN104534897A (en) * | 2014-12-29 | 2015-04-22 | 浙江华森散热器制造有限公司 | Expansion pipe type car heat radiator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111238263A (en) * | 2020-03-18 | 2020-06-05 | 无锡市冠云换热器有限公司 | Plate-fin heat exchanger set |
| CN113532163A (en) * | 2021-08-30 | 2021-10-22 | 北京龙源泽丰环保科技有限公司 | Air-cooled heat exchanger and assembling method |
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Application publication date: 20200114 |
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