CN203489539U - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- CN203489539U CN203489539U CN201320548393.0U CN201320548393U CN203489539U CN 203489539 U CN203489539 U CN 203489539U CN 201320548393 U CN201320548393 U CN 201320548393U CN 203489539 U CN203489539 U CN 203489539U
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- Prior art keywords
- rectangular tube
- heat exchanger
- slender rectangular
- flow path
- pipe fitting
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Abstract
Disclosed is a heat exchanger (100). The heat exchanger comprises a first elongated pipe fitting (1) and a second elongated pipe fitting (2) which is arranged in the first elongated pipe fitting (1), so that a first flowing path (F1) is formed between an outer surface (8) of the second elongated pipe fitting (2) and an inner surface (7) of the first elongated pipe fitting (1). A third elongated pipe fitting (3) is disposed in the second elongated pipe fitting (2), so that a second flowing path (F2) is formed between an outer surface (10) of the third elongated pipe fitting (3) and an inner surface (9) of the second elongated pipe fitting (2). At least one spiral waved portion (4) is arranged on each wall (5) of the elongated pipe fittings (1, 2 and 3), so that turbulent flows can be formed in fluids in the flowing path (F1), the flowing path (F2) and a flowing path (F3). By means of the waved portion (4), heat exchange is improved, and formation of incrustation can be reduced.
Description
Technical field
The utility model relates to the device that transfers heat to fluid or conduct heat between fluid, particularly but not exclusively, does not relate to the heat exchanger that is applicable to evaporimeter, condenser, superheated vapor attemperator or aftercooler in refrigeration or aircondition.
Background technology
Many technical process need to effectively be delivered to heat fluid or conduct heat between fluid.A kind of known method of carrying out heat exchange between fluid is " pipe-in-pipe " heat exchanger.The type heat exchanger has the first pipe fitting that is positioned at the second pipe fitting.Fluid at a kind of temperature flows through interior pipe fitting, moves in the annular of the fluid at the second temperature between outer wall of inner tube and outer tube wall simultaneously.Heat conducts heat between fluid by the wall of inner tube.
Utility model content
According to a main aspect of the present utility model, a kind of heat exchanger is provided, it comprises the first slender rectangular tube, the second slender rectangular tube and the 3rd slender rectangular tube, the second slender rectangular tube is arranged in the first slender rectangular tube, thus, between the outer surface of the second slender rectangular tube and the inner surface of the first slender rectangular tube, form the first flow path, and the 3rd slender rectangular tube is arranged in the second slender rectangular tube, thus, between the outer surface of the 3rd slender rectangular tube and the inner surface of the second slender rectangular tube, form the second flow path.Each wall of slender rectangular tube is provided with at least one spiral corrugated part, to form the turbulent flow of fluid in flow path.Corrugated part preferably extends along the whole length of pipe fitting.Each corrugated part preferably has asymmetrical profile, especially, and the serrate profile of rounding.The inner surface of the 3rd slender rectangular tube can form the 3rd flow path, or it can contain heating element heater.
The utility model preferred embodiment provides heat exchanger, and it allows in more than two heat exchange between fluid, and/or one of them forms turbulent flow in fluid, to improve heat exchanger effectiveness and self-cleaning effect is provided.
Accompanying drawing explanation
Fig. 1 is the diagrammatic side view of the utility model heat exchanger, and for clarity sake, outer corrugations portion does not give and illustrating.
Fig. 2 is by the enlarged drawing of part B in Fig. 1 of A-A cross section.
The specific embodiment
First with reference to Fig. 1 and 2, according to total the representing with arrow 100 of the heat exchanger of the utility model embodiment.Heat exchanger can adopt the combination of any suitable fluid or fluid.Terminology used here " fluid " comprises liquid, gas and steam state.Heat exchanger 100 can be used for the heating of target f fluid or cooling.
Each pipe fitting 1,2,3 has the helical fissure portion 4 at least one wall that is formed on pipe fitting 5.This corrugated part preferably, along most of length extension of pipe fitting 1,2,3, extends along their total lengths best, but at its arbitrary end, can be provided with introducing and/or the extension of short non-ripple portion.Each pipe can be provided with the initial corrugated part of single head or the initial corrugated part of bull.
In a preferred embodiment, the corrugated part in each pipe fitting 1,2,3 forms identical angle.Yet because the diameter of pipe is different, the corrugated part on each pipe can be staggered with respect to the corrugated part on other pipe.
As shown in Figure 2, in a preferred embodiment, corrugated part 4 has asymmetrical profile, preferably the serrate profile 6 of rounding.Corrugated part 4 can form by any suitable method, but preferably uses the cold working of cold forming wheel to form, and with regard to described in disclosed PCT description WO9407071, it is entitled as " manufacture of helical fissure portion pipe ", herein to introduce its full content referring to mode.In a preferred embodiment, described in each, pipe fitting is formed by copper, but also can adopt other suitable material, and they are familiar with by technical staff in the art.
As shown in Figure 2, in a preferred embodiment, the first and the 3rd pipe 1,3 is arranged to make corrugated part 4A, 4C to have the first orientation, and the second pipe fitting 2 is arranged to make corrugated part 4B to have the second contrary orientation.
The diameter of pipe fitting 1,2,3 is chosen to be the first flow path F1 is formed between the inner surface 7 of the first pipe fitting 1 and the outer surface 8 of the second pipe fitting 2, and the second flow path F2 is formed between the inner surface 9 of the second pipe fitting 2 and the outer surface 10 of the 3rd pipe fitting 3.In a preferred embodiment, the inner surface 11 of the 3rd pipe fitting 3 forms the 3rd flow path F3.Yet in other embodiments, the inside of the 3rd pipe fitting 3 can comprise electrical heating elements or similar element.When heat exchanger 100 is during as the evaporimeter of refrigeration or aircondition or superheated vapor attemperator, this can be used for preventing adding in the second flow path the possibility that hot fluid freezes especially.
The effect of corrugated part 4 is in fluid flows, to cause turbulent flow or turbulent flow in any flow path.This turbulent flow or turbulent flow improve the heat transfer between fluid and wall 5.Because the surfaces externally and internally of the wall 5 of pipe fitting is corrugated part, corrugated part 4 mobile fluid and cause turbulent flow in mobile fluid on outer surface 8,10 on the inner surface 7,9,11 of pipe fitting 1,2,3.
Helical fissure portion 4 is tending towards near the convection cell wall of pipe fitting 1,2,3 and applies motion rotation or whirlpool, and forms turbulent flow.This contributes in fluid, to mix a plurality of thermally stratified layers, and makes heat transfer by pipe wall 5 for maximum, also contributes to stop incrustation scale and sediment to be attached on wall 5.
In a preferred embodiment, flow path F1, F2, F3 have entrance 20,21,22 and outlet 23,24,25 separately, they are arranged to make the fluid in the first and the 3rd flow path F1, F3 to flow along first direction, and fluid in the second flow path F2 flows along contrary second direction, thus, heat exchanger operation in " convection current " structure, this is known by technical staff in the art.In one embodiment, each flow path can comprise different fluids and/or the fluid of different temperatures.Yet in other embodiments, first can comprise identical fluid and/or the fluid of substantially the same temperature with the 3rd flow path F1, F3.In certain embodiments, the entrance that leads to the first and the 3rd flow path F1, F3 can be connected to common flow body source.
In thering is the embodiment of serrate profile corrugated part, entrance 20,21,22 is arranged to make its fluid separately to flow (not being towards relatively vertical face) towards the direction of the longer face of zigzag configuration with outlet 23,24,25, the pressure drop causing to reduce corrugated part.
In one embodiment, the utility model is configured to the evaporimeter that rated power is 30kW, and has the refrigeration cooler of 30kW.Applicant's test shows that heat transfer coefficient is 41Kw/m
2.Under contrast, rated power is also the pipe-Nei-pipe in pipe on traditional increase surface of 30kW, and the heat transfer coefficient providing when for same apparatus is only 23Kw/m
2.The utility model reaches larger heat transfer coefficient with lower heat transfer surface area, and this shows that the utility model has produced the turbulent flow increasing in fluid.
Unless in literary composition, separately there is requirement expressly, otherwise, in whole descriptions and claims, word " comprises ", " comprising " etc. should regard the implication being included as, rather than exclusive or the exhaustive implication of staying, in other words, represent the implication of " including but not limited to ".
Claims (10)
1. a heat exchanger, described heat exchanger comprises the first slender rectangular tube, is arranged on the second slender rectangular tube in the first slender rectangular tube, thus, between the outer surface of the second slender rectangular tube and the inner surface of the first slender rectangular tube, forms the first flow path, it is characterized in that
Heat exchanger also comprises the 3rd slender rectangular tube being arranged in the second slender rectangular tube, thus, between the outer surface of the 3rd slender rectangular tube and the inner surface of the second slender rectangular tube, form the second flow path, wherein, described in each, the wall of slender rectangular tube is provided with at least one spiral corrugated part.
2. heat exchanger as claimed in claim 1, is characterized in that, described in each, corrugated part is substantially along the whole length extension of pipe fitting separately.
3. heat exchanger as claimed in claim 1, is characterized in that, each spiral described corrugated part has asymmetrical profile.
4. heat exchanger as claimed in claim 3, is characterized in that, described helical fissure portion has the serrate profile of rounding.
5. heat exchanger as claimed in claim 4, is characterized in that, described first and the corrugated part of the 3rd slender rectangular tube directed along first direction, the corrugated part of described the second slender rectangular tube is directed along the second direction contrary with first direction.
6. heat exchanger as claimed in claim 1, is characterized in that, described corrugated part is suitable in use described in each turbulization in stream of fluid in flow path.
7. the heat exchanger as described in claim 2,3,4,5 or 6, is characterized in that, the inner surface of described the 3rd slender rectangular tube forms the 3rd flow path.
8. heat exchanger as claimed in claim 7, it is characterized in that, described in each, slender rectangular tube has entrance and exit separately, and described entrance and exit is arranged to the fluid stream by described the second flow path in use and is flowed in the fluid with in described the first flow path and described the 3rd flow path flows contrary direction.
9. heat exchanger as claimed in claim 8, is characterized in that, the entrance of described the first flow path and described the 3rd flow path is connected to common flow body source.
10. heat exchanger as claimed in claim 1, is characterized in that, described the 3rd slender rectangular tube comprises electrical heating elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320548393.0U CN203489539U (en) | 2013-09-04 | 2013-09-04 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320548393.0U CN203489539U (en) | 2013-09-04 | 2013-09-04 | Heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203489539U true CN203489539U (en) | 2014-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320548393.0U Expired - Fee Related CN203489539U (en) | 2013-09-04 | 2013-09-04 | Heat exchanger |
Country Status (1)
| Country | Link |
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| CN (1) | CN203489539U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2537677A (en) * | 2015-04-24 | 2016-10-26 | Linde Ag | Heat exchanger in syngas/h2 plants with double expansion bellows |
| WO2018073994A1 (en) * | 2016-10-18 | 2018-04-26 | 株式会社エコラ・テック | Radiator, condenser unit, and refrigeration cycle |
| CN110873357A (en) * | 2018-08-29 | 2020-03-10 | 宁波方太厨具有限公司 | Heating and living dual-purpose furnace and control method thereof |
| CN111632565A (en) * | 2020-05-24 | 2020-09-08 | 西安交通大学 | Micro-channel rapid cooling device for preparing nano powder by supercritical hydrothermal synthesis technology |
| CN111928699A (en) * | 2019-05-13 | 2020-11-13 | 康唯特公司 | Heat exchanger and circuit system for temperature control |
-
2013
- 2013-09-04 CN CN201320548393.0U patent/CN203489539U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2537677A (en) * | 2015-04-24 | 2016-10-26 | Linde Ag | Heat exchanger in syngas/h2 plants with double expansion bellows |
| WO2018073994A1 (en) * | 2016-10-18 | 2018-04-26 | 株式会社エコラ・テック | Radiator, condenser unit, and refrigeration cycle |
| CN110873357A (en) * | 2018-08-29 | 2020-03-10 | 宁波方太厨具有限公司 | Heating and living dual-purpose furnace and control method thereof |
| CN111928699A (en) * | 2019-05-13 | 2020-11-13 | 康唯特公司 | Heat exchanger and circuit system for temperature control |
| CN111632565A (en) * | 2020-05-24 | 2020-09-08 | 西安交通大学 | Micro-channel rapid cooling device for preparing nano powder by supercritical hydrothermal synthesis technology |
| CN111632565B (en) * | 2020-05-24 | 2021-09-03 | 西安交通大学 | Micro-channel rapid cooling device for preparing nano powder by supercritical hydrothermal synthesis technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20180904 |
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| CF01 | Termination of patent right due to non-payment of annual fee |