CN107270763B - Inner fin tube heat exchanger - Google Patents
Inner fin tube heat exchanger Download PDFInfo
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- CN107270763B CN107270763B CN201710176114.5A CN201710176114A CN107270763B CN 107270763 B CN107270763 B CN 107270763B CN 201710176114 A CN201710176114 A CN 201710176114A CN 107270763 B CN107270763 B CN 107270763B
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- Prior art keywords
- heat exchange
- exchange cavity
- micro
- outer tube
- cavity
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Classifications
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- 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
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
An inner fin tube heat exchanger comprises a heat exchange outer tube; an inner fin is arranged on the inner wall of the heat exchange outer tube; the inner wall of the heat exchange outer tube is also provided with a vortex generating device; the vortex generating device consists of six groups of micro-blade assemblies; the inner fins are connected to the central shaft; a heat exchange cavity is formed among the central shaft, the inner fins and the heat exchange outer tube; the heat exchange cavity comprises 4 heat exchange cavities, namely a first heat exchange cavity, a second heat exchange cavity, a third heat exchange cavity and a fourth heat exchange cavity; the continuous circulation exchange of cold and hot fluid between the wall surface of the heat exchange outer tube and the heat exchange medium and the main flow medium increases the heat transfer performance of the heat exchanger, improves the heat exchange efficiency and saves the resources.
Description
Technical Field
The invention relates to the technical field of heat exchange heat exchangers, in particular to an inner fin tube heat exchanger which is provided with a vortex generating device, saves pipes, improves the heat efficiency and saves a large amount of fuel.
Background
With the further development of global industrialization process, energy conservation and environmental protection are increasingly receiving attention from countries around the world; aiming at the problems of energy conservation and environmental protection existing in the prior heating furnace, a high-efficiency short-flow industrial heating device is developed, the heat efficiency of the industrial heating furnace and the gas-oil boiler is effectively improved by adopting a condensation type flue gas waste heat recovery technology, a large amount of fuel is saved, and great energy-saving benefits are generated; the heat exchanger is widely applied to a finned tube heat exchanger at present, the heat radiating area can be enlarged through fins, the heat exchanging effect is enhanced, but the type and shape of the heat exchanger of the finned tube and the setting of the parameters of the finned tube influence the heat radiating effect, and in the case of energy crisis at present, energy conservation is urgently needed, and the sustainable development of society is met, so that a new finned tube needs to be developed, and meanwhile, the structure of the finned tube needs to be optimized, so that the heat exchanging efficiency is maximized, the energy is saved, and the purposes of environmental protection and energy conservation are achieved; in order to shorten the flow path of the convection section of the heating furnace tube, the convection heat transfer performance in the furnace tube needs to be improved, and therefore, a new heat exchanger is needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide the inner fin tube heat exchanger with the vortex generating device, which saves pipes, improves the heat efficiency, saves a large amount of fuel and solves the technical problems.
In order to achieve the technical purpose and meet the technical requirements, the invention adopts the technical scheme that: an inner fin tube heat exchanger comprises a heat exchange outer tube; an inner fin is arranged on the inner wall of the heat exchange outer tube; the method is characterized in that: the inner wall of the heat exchange outer tube is also provided with a vortex generating device; the inner fins are connected to the central shaft; a heat exchange cavity is formed among the central shaft, the inner fins and the heat exchange outer tube; the heat exchange cavity comprises 4 heat exchange cavities, namely a first heat exchange cavity, a second heat exchange cavity, a third heat exchange cavity and a fourth heat exchange cavity.
As a preferable technical scheme: the vortex generating device consists of six groups of micro-blade assemblies; the micro-vane components are concentrically and uniformly distributed or staggered and uniformly distributed on the circumferential direction of the inner wall of the heat exchange outer tube.
As a preferable technical scheme: a first conical opening is formed between the micro-blade components; the large end of the first conical opening is arranged near the outlet of the inner fin.
As a preferable technical scheme: the micro-blade assembly comprises a first micro-blade and a second micro-blade; a second conical opening is formed between the first micro blade and the second micro blade; the small end of the second conical opening is arranged near the outlet of the inner fin.
As a preferable technical scheme: the first micro-blade and the second micro-blade have the same structure; the first micro-blade is of a triangular structure.
As a preferable technical scheme: the bottom of the triangular structure faces to the outlet of the inner fin.
As a preferable technical scheme: the sizes a, b and c on the micro-blade assembly are respectively equal to 3.75h, 0.625h and 6.525h.
As a preferable technical scheme: the distribution size d of the vortex generating device in the heat exchange outer tube is equal to half of the distribution size e of the inner fins in the heat exchange outer tube.
As a preferable technical scheme: the first heat exchange cavity and the third heat exchange cavity have the same structure; the second heat exchange cavity and the fourth heat exchange cavity have the same structure; the first heat exchange cavity, the second heat exchange cavity, the third heat exchange cavity and the fourth heat exchange cavity are distributed in a cross shape.
As a preferable technical scheme: the first heat exchange cavity and the second heat exchange cavity are of fan-shaped structures; the area of the first heat exchange cavity is larger than that of the second heat exchange cavity.
The beneficial effects of the invention are as follows: an inner fin tube heat exchanger is provided with a vortex generating device and a heat exchange cavity; the primary heat exchange is carried out in the heat exchange cavity, the heat exchange cavity consists of 4 heat exchange cavities, the contact area is large, and the heat exchange medium is uniformly distributed; the vortex generating device and the outlet of the heat exchange cavity form convection to generate vortex, so that continuous circulation exchange of cold and hot fluid between the wall surface of the heat exchange outer tube and the heat exchange medium and the main flow medium is realized, the heat transfer performance of the heat exchanger is improved, the heat exchange efficiency is improved, and resources are saved.
Drawings
FIG. 1 is a front view of a first embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of a first embodiment of the present invention with micro-vane assemblies concentrically and uniformly distributed in the circumferential direction of the inner wall of the heat exchange outer tube;
FIG. 3 is a three-dimensional view of a micro-blade assembly of the present invention;
FIG. 4 is a partial cross-sectional view of a second embodiment of the present invention with micro-vane assemblies staggered and evenly distributed in the circumferential direction of the inner wall of the heat exchange outer tube;
in the figure: 1. the heat exchange tube, the inner fin, the vortex generating device, the central shaft, the heat exchange cavity, the first heat exchange cavity, the second heat exchange cavity, the third heat exchange cavity and the third heat exchange cavity are respectively arranged in the outer tube, the inner fin, the vortex generating device, the central shaft, the heat exchange cavity, the first heat exchange cavity, the second heat exchange cavity, the third heat exchange cavity and the third heat exchange cavity. 504, fourth heat exchange chamber, 301, micro-vane assembly, 302, first tapered mouth, 303, first micro-vane, 304, second micro-vane, 305, second tapered mouth.
Detailed Description
The invention is further described below with reference to the accompanying drawings;
in the drawings: an inner fin tube heat exchanger comprises a heat exchange outer tube 1; an inner fin 2 is arranged on the inner wall of the heat exchange outer tube 1; the inner wall of the heat exchange outer tube 1 is also provided with a vortex generating device 3; the vortex generating device 3 and the outlet of the heat exchange cavity 5 form convection to generate vortex, so that the exchange of cold and hot fluid between the wall surface of the heat exchange outer tube and the heat exchange medium and the main flow medium is realized, and the heat transfer performance of the heat exchanger is improved; the inner fins 2 are connected to the central shaft 4; a heat exchange cavity 5 is formed between the central shaft 4 and the inner fins 2 and between the central shaft and the heat exchange outer tube 1; the heat exchange cavity 5 comprises 4 heat exchange cavities, namely a first heat exchange cavity 501, a second heat exchange cavity 502, a third heat exchange cavity 503 and a fourth heat exchange cavity 504, which are distributed in a cross shape, so that the heat exchange medium contact area is large, the heat exchange medium is uniformly distributed, vortex generation is facilitated, and the heat exchange efficiency is improved.
In fig. 1: first embodiment: the micro-vane assemblies 301 are concentrically and uniformly distributed on the circumferential direction of the inner wall of the heat exchange outer tube 1, form convection with the outlet of the heat exchange cavity 5, generate vortex flow, and realize the exchange of cold and hot fluid between the wall surface of the heat exchange outer tube, the heat exchange medium and the main flow medium.
In fig. 4: second embodiment: the micro-vane assemblies 301 are staggered and uniformly distributed on the circumferential direction of the inner wall of the heat exchange outer tube 1, form convection with the outlet of the heat exchange cavity 5 and the staggered position, generate vortex flow, and realize the exchange of cold and hot fluid between the wall surface of the heat exchange outer tube, the heat exchange medium and the main flow medium.
In fig. 1 and 4: the vortex generating device 3 consists of six groups of micro-blade assemblies 301; a first conical opening 302 is formed between the micro-vane assemblies 301; the large end of the first conical opening 302 is arranged near the outlet of the inner fin 2; the micro-blade assembly 301 includes a first micro-blade 303 and a second micro-blade 304; a second conical opening 305 is formed between the first micro blade 303 and the second micro blade 304; the small end of the second conical opening 305 is arranged near the outlet of the inner fin 2; the first micro blade 303 and the second micro blade 304 have the same structure; the first micro-blade 303 has a triangular structure; the bottom of the triangular structure faces to the outlet of the inner fin 2; the distribution size d of the vortex generating device 3 in the heat exchange outer tube 1 is equal to half of the distribution size e of the inner fins 2 in the heat exchange outer tube 1; the first tapered opening 302 and the second tapered opening 305 are opposite in size and direction; the large opening of the first conical opening 302 allows the heat exchange medium to smoothly enter, and when the heat exchange medium flows out from the small opening, the heat exchange medium is extruded and blocked, and part of the heat exchange medium flows back to form vortex; the second conical port 305 is small in port, the heat exchange medium flows in, and is extruded and blocked at the small port due to small port, part of the heat exchange medium flows back to form vortex, so that the residence time of the heat exchange medium is prolonged, the continuous circulating heat exchange of cold and hot fluid between the wall surface of the heat exchange outer tube 1, the heat exchange medium and the main flow medium is realized, and the heat exchange efficiency is improved by matching with the first conical port 302.
In fig. 3: the dimensions a, b and c on the micro-blade assembly 301 are respectively equal to 3.75h, 0.625h and 6.525h, and different specifications are selected according to different use conditions.
In fig. 1: the first heat exchange cavity 501 and the third heat exchange cavity 503 have the same structure; the second heat exchange cavity 502 and the fourth heat exchange cavity 504 have the same structure; the first heat exchange cavity 501, the second heat exchange cavity 502, the third heat exchange cavity 503 and the fourth heat exchange cavity 504 are distributed in a cross shape, so that the contact area is large, the heat exchange medium is uniformly distributed, the heat exchange efficiency of the inner fin 2 is improved, and the heat exchange medium at the outlet of the heat exchange cavity 5 is impacted mutually due to the fact that the heat exchange cavity is 4 heat exchange cavities, and vortex is formed at the outlet of the heat exchange cavity 5 and the vortex generating device 3; the first heat exchange cavity 501 and the second heat exchange cavity 502 are in a fan-shaped structure; the area of the first heat exchange cavity 501 is larger than that of the second heat exchange cavity 502, the areas are different, the flow rates of the heat exchange media are different, the heat exchange media mutually impact, vortex is formed at the vortex generating device 3, continuous circulation heat exchange of cold and hot fluid between the wall surface of the heat exchange outer tube 1, the heat exchange media and the main flow media is facilitated, and the heat exchange efficiency is improved.
The above examples are provided for the purpose of clearly illustrating the invention and are not to be construed as limiting the invention, and other variants and modifications of the various forms may be made by those skilled in the art based on the description, which are not intended to be exhaustive of all embodiments, and obvious variants or modifications of the invention may be found within the scope of the invention.
Claims (1)
1. An inner fin tube heat exchanger comprises a heat exchange outer tube (1); an inner fin (2) is arranged on the inner wall of the heat exchange outer tube (1); the method is characterized in that: the inner wall of the heat exchange outer tube (1) is also provided with a vortex generating device (3); the inner fins (2) are connected to the central shaft (4); a heat exchange cavity (5) is formed between the central shaft (4) and the inner fins (2) and between the central shaft and the heat exchange outer tube (1); the heat exchange cavity (5) comprises 4 heat exchange cavities, namely a first heat exchange cavity (501), a second heat exchange cavity (502), a third heat exchange cavity (503) and a fourth heat exchange cavity (504);
the vortex generating device (3) consists of six groups of micro-blade assemblies (301); the micro-vane assemblies (301) are concentrically and uniformly distributed or staggered and uniformly distributed on the circumferential direction of the inner wall of the heat exchange outer tube (1);
a first conical opening (302) is formed between the micro-blade assemblies (301); the large end of the first conical opening (302) is arranged close to the outlet of the inner fin (2);
the micro-blade assembly (301) comprises a first micro-blade (303) and a second micro-blade (304); a second conical opening (305) is formed between the first micro blade (303) and the second micro blade (304); the small end of the second conical opening (305) is arranged near the outlet of the inner fin (2);
the first micro blade (303) and the second micro blade (304) have the same structure; the first micro-blade (303) is of a triangular structure;
the bottom of the triangular structure faces to the outlet of the inner fin (2);
the sizes a, b and c on the micro-blade assembly (301) are respectively equal to 3.75h, 0.625h and 6.525h;
the distribution size d of the vortex generating device (3) in the heat exchange outer tube (1) is equal to half of the distribution size e of the inner fins (2) in the heat exchange outer tube (1);
the first heat exchange cavity (501) and the third heat exchange cavity (503) have the same structure; the second heat exchange cavity (502) and the fourth heat exchange cavity (504) have the same structure; the first heat exchange cavity (501), the second heat exchange cavity (502), the third heat exchange cavity (503) and the fourth heat exchange cavity (504) are distributed in a cross shape;
the first heat exchange cavity (501) and the second heat exchange cavity (502) are of fan-shaped structures; the area of the first heat exchange cavity (501) is larger than that of the second heat exchange cavity (502).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710176114.5A CN107270763B (en) | 2017-03-23 | 2017-03-23 | Inner fin tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710176114.5A CN107270763B (en) | 2017-03-23 | 2017-03-23 | Inner fin tube heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107270763A CN107270763A (en) | 2017-10-20 |
| CN107270763B true CN107270763B (en) | 2023-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710176114.5A Active CN107270763B (en) | 2017-03-23 | 2017-03-23 | Inner fin tube heat exchanger |
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| Country | Link |
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| CN (1) | CN107270763B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765535A (en) * | 2019-04-02 | 2020-10-13 | 青岛海尔空调器有限总公司 | Fluid pipeline, heat exchange equipment and temperature adjusting equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1451937A (en) * | 2003-05-10 | 2003-10-29 | 清华大学 | Non-continuous double diagonal internal rib reinforced heat exchange tube |
| CN201293590Y (en) * | 2008-11-18 | 2009-08-19 | 高宁 | Bottom waviness heat exchange tube |
| CN102889813A (en) * | 2012-10-19 | 2013-01-23 | 合肥通用机械研究院 | Double-finned tube combined heat exchange component for high efficiency vaporizer |
| CN103175429A (en) * | 2013-04-18 | 2013-06-26 | 南京工业大学 | Multidirectional corrugated inner finned tube |
| CN206755963U (en) * | 2017-03-23 | 2017-12-15 | 托普工业(江苏)有限公司 | Inner-finned-tube heat exchanger |
| CN110174009A (en) * | 2019-06-12 | 2019-08-27 | 珠海格力电器股份有限公司 | Double-pipe heat exchanger with fins |
-
2017
- 2017-03-23 CN CN201710176114.5A patent/CN107270763B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1451937A (en) * | 2003-05-10 | 2003-10-29 | 清华大学 | Non-continuous double diagonal internal rib reinforced heat exchange tube |
| CN201293590Y (en) * | 2008-11-18 | 2009-08-19 | 高宁 | Bottom waviness heat exchange tube |
| CN102889813A (en) * | 2012-10-19 | 2013-01-23 | 合肥通用机械研究院 | Double-finned tube combined heat exchange component for high efficiency vaporizer |
| CN103175429A (en) * | 2013-04-18 | 2013-06-26 | 南京工业大学 | Multidirectional corrugated inner finned tube |
| CN206755963U (en) * | 2017-03-23 | 2017-12-15 | 托普工业(江苏)有限公司 | Inner-finned-tube heat exchanger |
| CN110174009A (en) * | 2019-06-12 | 2019-08-27 | 珠海格力电器股份有限公司 | Double-pipe heat exchanger with fins |
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| Publication number | Publication date |
|---|---|
| CN107270763A (en) | 2017-10-20 |
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