CN104964585A - Heat exchanger, alternating flow system and machining method of heat exchanger - Google Patents
Heat exchanger, alternating flow system and machining method of heat exchanger Download PDFInfo
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- CN104964585A CN104964585A CN201510347718.2A CN201510347718A CN104964585A CN 104964585 A CN104964585 A CN 104964585A CN 201510347718 A CN201510347718 A CN 201510347718A CN 104964585 A CN104964585 A CN 104964585A
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- outer tube
- heat exchanger
- interior pipe
- tube
- wall
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- 238000000034 method Methods 0.000 title abstract description 21
- 238000003754 machining Methods 0.000 title description 2
- 238000003672 processing method Methods 0.000 claims abstract description 11
- 229910000679 solder Inorganic materials 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 10
- 238000005520 cutting process Methods 0.000 abstract description 4
- 239000000498 cooling water Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 10
- 239000010949 copper Substances 0.000 description 10
- 230000008901 benefit Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a heat exchanger, an alternating flow system and a processing method of the heat exchanger, aiming at solving the problem of how to reduce the processing complexity or difficulty of the heat exchanger while improving the heat exchange performance. The heat exchanger comprises a sleeve and a plurality of tube bundle units which are sleeved in the sleeve and are used for gas circulation; each tube bundle unit comprises an outer tube and at least two inner tubes sleeved in the outer tube, and the inner tubes are arranged in contact with the outer tube. The invention increases the contact area of the air flow and the tube bundle unit by adding the inner tube, thereby improving the heat exchange performance. In addition, the invention replaces the fins in the prior art by sleeving the inner tube in the outer tube, thereby omitting the complex processing process of a linear cutting technology or the high-difficulty process of a stretching forming technology, having low processing complexity, small difficulty and easy realization.
Description
Technical field
The present invention relates to Oscillating flow field of heat exchange, particularly relate to a kind of heat exchanger, the processing method of this heat exchanger and a kind of Oscillating flow system.
Background technology
Oscillating flow system, such as Stirling engine and refrigeration machine, thermoacoustic engine and refrigeration machine, vascular refrigerator etc., are widely used in various conversion process of energy.Heat exchanger is one of core component of Oscillating flow system, and the heat transfer effect of heat exchanger determines the energy conversion efficiency of Oscillating flow system.
Fig. 1 is the water cooler structure in a traditional Oscillating flow system, the red copper fin 2 that this water cooler comprises shell 1 and is arranged in shell 1, and forming water stream channel 3 between red copper fin 2 and shell 1, is gas channel inside red copper fin.Red copper fin 2 also arranges a small amount of fin 21, to strengthen the heat exchange between red copper fin and water towards the side of water stream channel 3.Red copper fin distribution density is comparatively large, increases heat exchange area.When heat exchange, the heat of air-flow need through red copper fins conduct to cooling water, so the caloric requirement of air-flow just can conduct to cooling water through larger distance, the temperature difference caused between the top of red copper fin and root is comparatively large, have impact on heat exchange property.Along with the increase of Oscillating flow system power, the radial height of red copper fin needs to increase, and the temperature difference between the top of such red copper fin and root can be larger.
Fig. 2 gives a kind of structure of shell-and-tube heat exchanger, the some pipes 61 that this heat exchanger comprises sleeve 4 and is arranged in sleeve, and air-flow flows in pipe 61, flows in the sleeve 4 of cooling water outside pipe 61.Sleeve 4 offers water inlet or delivery port 41, and the two ends of sleeve are by being connected with end cap 5.Because cooling water all contacts with every root pipe, therefore relatively, the gas in different pipe there will not be larger temperature contrast to the outside wall temperature of every root pipe.But also there is shortcoming in the heat exchanger of this structure.Because the heat exchange area of this structure air-flow side is substantially equal with the heat exchange area of cooling water side, but the coefficient of heat transfer of gas is but more than a magnitude less of the coefficient of heat transfer of cooling water, so the heat exchange property of the heat exchanger of this structure is unsatisfactory.For this reason, pipe can be processed into structure as shown in Figure 3, just can increase the heat exchange area of gas side.But according to line cutting technology, process is very loaded down with trivial details, and cost is also higher.According to drawing and forming technology, because the spacing between pipe inner fin is very little, technology difficulty is large, processing difficulties.
Summary of the invention
This bright technical problem that will solve be how improving heat exchange property while, reduce processed complex degree or the difficulty of heat exchanger.
For solving the problems of the technologies described above, the present invention proposes a kind of heat exchanger.This heat exchanger comprises sleeve and is set in several tube bundle unit in described sleeve, and the inside of described tube bundle unit, for first-class moving medium circulation, supplies the circulation of second moving medium in the sleeve of described tube bundle unit outside; Tube bundle unit described in each comprises an outer tube and is set in pipe at least two in described outer tube, and the outer wall of each described interior pipe contacts with the inwall of described outer tube.
Further, between the outer wall of each described interior pipe and the inwall of described outer tube for face contacts.
Further, connect for contacting between the outer wall of each described interior pipe and the inwall of described outer tube.
Further, between the outer wall of each described interior pipe and the inwall of described outer tube for face is connected.
Present invention also offers a kind of Oscillating flow system, comprise arbitrary described heat exchanger.
Present invention also offers a kind of processing method of heat exchanger, the method comprises:
At least two interior pipe boxes are contained in the inside of an outer tube;
Extrude described outer tube, the inwall of described outer tube is contacted with the outer wall of each described interior pipe.
Further, extrude described outer tube with the active force being greater than default active force, forming surface between the inwall of described outer tube and the outer wall of each described interior pipe is contacted.
Further, the method also comprises:
The outer wall of described interior pipe is welded with the inwall of described outer tube.
Further, the described outer wall by described interior pipe welds with the inwall of described outer tube, comprising:
Before the inside interior pipe box being contained in outer tube, coated with solder on the outer wall of described interior pipe;
Being made by the described outer tube of extruding after described outer tube contacts with each described interior pipe, to be heated to described solder fusing to described tube bundle unit.
The present invention adds the contact area of air-flow and tube bundle unit by the mode of setting up interior pipe, thus improves heat exchange property.And utilize the mode of sheathed interior pipe within the outer tube to substitute fin of the prior art, eliminate the complicated processing process of line cutting technology or the highly difficult technique of drawing and forming technology, not only processed complex degree is low, and difficulty is little, easily realizes.
Accompanying drawing explanation
Can understanding the features and advantages of the present invention clearly by reference to accompanying drawing, accompanying drawing is schematic and should not be construed as and carry out any restriction to the present invention, in the accompanying drawings:
Fig. 1 shows the structural representation of water cooler in a kind of traditional Oscillating flow system;
Fig. 2 shows a kind of structural representation of shell-and-tube heat exchanger;
Fig. 3 shows the cross-sectional view after improving the pipe in Fig. 2 in prior art;
Fig. 4 shows the structural representation of a kind of heat exchanger of the present invention;
Fig. 5 shows the decomposing schematic representation of a kind of heat exchanger of the present invention;
Fig. 6 shows the cross-sectional view of tube bundle unit in a kind of heat exchanger of the present invention;
Fig. 7 shows the cross-sectional view in a kind of heat exchanger of the present invention before tube bundle unit extruding.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the present invention is described in detail.
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
The invention provides a kind of heat exchanger, as shown in Figure 4,5, 6, this heat exchanger comprises sleeve 4 and is set in several tube bundle unit 62 of supplied gas circulation in described sleeve 4; At least two interior pipes 621 that tube bundle unit 62 described in each comprises an outer tube 622 and is set in described outer tube, each described interior pipe contacts with described outer tube and arranges.For first-class moving medium circulation in tube bundle unit 62, for the circulation of second moving medium in the sleeve of tube bundle unit outside, first-class moving medium, second moving medium can be water, air etc.
Generally, first-class moving medium is thermal current, and second moving medium is cooling water, and following content is described for this situation.
Because heat exchanger of the present invention adopts the structure arranging some tube bundle unit in sleeve pipe, with the shell-and-tube heat exchanger similar shown in Fig. 2, because the outer tube of cooling water with each tube bundle unit contacts, therefore the outside wall temperature of each tube bundle unit middle external tube relatively, gas in different tube bundle unit there will not be larger temperature contrast, therefore avoids the problem that the heat exchange property that brought more greatly by temperature contrast is not good.
And, manage owing to being provided with in the outer tube of each tube bundle unit at least two, and pipe is arranged with the Contact of outer tube in every root, the air-flow that flows through of space between pipe or interior pipe in tube bundle unit, heat is conducted to the cooling water outside tube bundle unit by outer tube, or give interior pipe by heat conduction, heat is conducted to cooling water by outer tube by interior pipe again.The present invention adds the contact area of air-flow and tube bundle unit by the mode of setting up interior pipe, thus improves heat exchange property.
Although the function class that the interior pipe in the present invention and the fin in Fig. 3 play seemingly, but the present invention utilizes the mode of sheathed interior pipe within the outer tube to substitute fin of the prior art, eliminate the complicated processing process of line cutting technology or the highly difficult technique of drawing and forming technology, not only processed complex degree is low, and difficulty is little, easily realize.
Because tube bundle unit of the present invention processing is simple, therefore can the diameter of tube bundle unit can accomplish very little, this be also that pipe in Fig. 3 cannot be accomplished, because the diameter of pipe is by the large restriction of fin machining difficulty.Diameter due to tube bundle unit can be accomplished very little, therefore can meet various heat transfer requirements.
Be provided with in Fig. 4, the tube bundle unit shown in 5,6 in four and manage, certainly, the quantity of interior pipe can unrestricted choice in the specific implementation.
Because pipe quantity in each outer tube is adjustable, and in every root, the diameter of pipe and wall thickness also can regulate as required, and therefore the circulation area ratio of whole heat exchanger can free adjustment within a large range.This is that the shell-and-tube heat exchanger shown in Fig. 2 and Fig. 3 cannot be accomplished, owing to not having interior pipe or fin in the pipe in Fig. 2, its circulation area ratio is limited to the factor such as pipe thickness, tube pitch, and adjustable extent is very little.And the diameter of pipe in Fig. 3 smaller time, the difficulty of processing of fin is very large, simultaneously the spacing of its fin and the adjustable extent of thickness very little, so the circulation area of the heat exchanger formed by pipe in Fig. 3 is also very less than adjustable extent.
Hydraulic diameter needed for heat exchanger in Fig. 2,3 is mainly by the operating frequency influences of system, and the water conservancy diameter of the finned heat exchanger of Fig. 3 equals 2 times of spacings of fin, and adjustability is less.And water conservancy diameter is less, and spacing of fin is less, and difficulty of processing is larger.And the diameter of interior pipe in the present invention is changeable, even may diminish to 0.1mm, therefore water conservancy diameter of the present invention can be very little, meets various heat transfer requirements.
The one of technique scheme is improved, for face contacts between the outer wall of each described interior pipe and the inwall of described outer tube.Because the contact area of face contact gear ratio linear contact lay is large, therefore face contacts the amount of thermal conduction that can improve between inner and outer tubes within the unit interval.
The another kind of technique scheme being improved, connecting for contacting between the outer wall of each described interior pipe and the inwall of described outer tube.In this improvement project, interior pipe not only contacts with between outer tube, and is connected, and which enhances the stability of tube bundle unit, extends the service life of heat exchanger.To the further improvement of this improvement project, for face is connected between the outer wall of each described interior pipe and the inwall of described outer tube.On the basis of improving tube bundle unit stability, improve the amount of thermal conduction within the unit interval between inner and outer tubes.
In addition, as shown in Figure 4, sleeve 4 sidewall of heat exchanger is also provided with the import or export 41 of cooling water, the two ends of sleeve are tightly connected with end cap 5 respectively, welding manner can be adopted between tube bundle unit 61 with end cap 5 to be connected, and tube bundle unit is communicated with the air admission hole on end cap or venthole.
The present invention also provides a kind of Oscillating flow system, and this Oscillating flow system comprises above-mentioned heat exchanger.This Oscillating flow system has the advantage identical with heat exchanger, repeats no more here.
The present invention also provides a kind of method of processing above-mentioned heat exchanger, and certainly, above-mentioned heat exchanger can also adopt other method processing to obtain.
The method comprises:
At least two interior pipe boxes are contained in described outer tube;
Extrude described outer tube, described outer tube is contacted with each described interior pipe.
Fig. 7 shows the state of the front tube bundle unit of extruding, and by extruding outer tube, outer tube, interior pipe produce deformation, produce contact.
From above-mentioned processing method, process is simple, and processing cost and difficulty are all lower.
In the specific implementation, by extruding outer tube, outer tube can not only be made to contact with each interior pipe, the Contact of adjacent inner tube can also be made.
In order to make the stability forming good heat conductivility between outer tube and interior pipe and increase tube bundle unit, this processing method can also comprise: outer tube and interior pipe are welded.
Concrete welding method is:
Before described interior pipe box is contained in described outer tube, coated with solder on described outer wall of inner tube;
Make after described outer tube contacts with each described interior pipe, to be heated to solder fusing to described tube bundle unit by extruding described outer tube.
In order to increase the heat-transfer rate between outer tube and interior pipe, realize by the mode increasing heat-conducting area.Therefore in above-mentioned extrusion process, adopt the active force being greater than default active force to extrude described outer tube, forming surface contact or face between outer tube and interior pipe are connected.
In sum, heat exchanger provided by the invention and Oscillating flow system, not only increase heat exchange property, and structure is simple.From its simple structure, process difficulty is little, easily realizes.Processing method provided by the invention, process is simple, processing cost and difficulty lower.
Although describe embodiments of the present invention by reference to the accompanying drawings, but those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, such amendment and modification all fall into by within claims limited range.
Claims (9)
1. a heat exchanger, is characterized in that, comprises sleeve and is set in several tube bundle unit in described sleeve, and the inside of described tube bundle unit, for first-class moving medium circulation, supplies the circulation of second moving medium in the sleeve of described tube bundle unit outside; Tube bundle unit described in each comprises an outer tube and is set in pipe at least two in described outer tube, and the outer wall of each described interior pipe contacts with the inwall of described outer tube.
2. heat exchanger according to claim 1, is characterized in that, for face contacts between the outer wall of each described interior pipe and the inwall of described outer tube.
3. heat exchanger according to claim 1, is characterized in that, connects between the outer wall of each described interior pipe and the inwall of described outer tube for contacting.
4. heat exchanger according to claim 3, is characterized in that, for face is connected between the outer wall of each described interior pipe and the inwall of described outer tube.
5. an Oscillating flow system, is characterized in that, comprises the arbitrary described heat exchanger of claim 1-4.
6. a processing method for heat exchanger, is characterized in that, comprising:
At least two interior pipe boxes are contained in the inside of an outer tube;
Extrude described outer tube, the inwall of described outer tube is contacted with the outer wall of each described interior pipe.
7. processing method according to claim 6, is characterized in that, extrudes described outer tube with the active force being greater than default active force, and forming surface between the inwall of described outer tube and the outer wall of each described interior pipe is contacted.
8. processing method according to claim 6, is characterized in that, also comprises:
The outer wall of described interior pipe is welded with the inwall of described outer tube.
9. processing method according to claim 8, is characterized in that, the described outer wall by described interior pipe welds with the inwall of described outer tube, comprising:
Before the inside interior pipe box being contained in outer tube, coated with solder on the outer wall of described interior pipe;
Being made by the described outer tube of extruding after described outer tube contacts with each described interior pipe, to be heated to described solder fusing to described tube bundle unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510347718.2A CN104964585A (en) | 2015-06-19 | 2015-06-19 | Heat exchanger, alternating flow system and machining method of heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510347718.2A CN104964585A (en) | 2015-06-19 | 2015-06-19 | Heat exchanger, alternating flow system and machining method of heat exchanger |
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| CN104964585A true CN104964585A (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510347718.2A Pending CN104964585A (en) | 2015-06-19 | 2015-06-19 | Heat exchanger, alternating flow system and machining method of heat exchanger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225523A (en) * | 2016-07-22 | 2016-12-14 | 中国科学院理化技术研究所 | Alternating flow heat exchanger |
| CN111609748A (en) * | 2019-02-25 | 2020-09-01 | 中国科学院理化技术研究所 | Alternating flow heat exchanger and alternating flow system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4523637A (en) * | 1980-11-26 | 1985-06-18 | Abramo Carlos A D | System for the refrigeration of liquids and/or gases |
| CN2338713Y (en) * | 1998-09-27 | 1999-09-15 | 张力 | Tubular heat exchanger with unequal sectional areas |
| CN2919177Y (en) * | 2006-03-31 | 2007-07-04 | 刘殿生 | Heat interchanger with inner-positioning tube stack type heat exchange tube |
| CN101074808A (en) * | 2006-05-16 | 2007-11-21 | 中国科学院理化技术研究所 | Pressure wave driven non-resonance type direct current heat exchanger |
| TW201111729A (en) * | 2009-07-28 | 2011-04-01 | Cku Inc | Heat exchanger using multiple pipes |
| CN103629952A (en) * | 2012-08-29 | 2014-03-12 | 洛阳麦达斯铝业有限公司 | Tubular heat exchanger, method for manufacturing tubular heat exchanger and heat exchange equipment |
-
2015
- 2015-06-19 CN CN201510347718.2A patent/CN104964585A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4523637A (en) * | 1980-11-26 | 1985-06-18 | Abramo Carlos A D | System for the refrigeration of liquids and/or gases |
| CN2338713Y (en) * | 1998-09-27 | 1999-09-15 | 张力 | Tubular heat exchanger with unequal sectional areas |
| CN2919177Y (en) * | 2006-03-31 | 2007-07-04 | 刘殿生 | Heat interchanger with inner-positioning tube stack type heat exchange tube |
| CN101074808A (en) * | 2006-05-16 | 2007-11-21 | 中国科学院理化技术研究所 | Pressure wave driven non-resonance type direct current heat exchanger |
| TW201111729A (en) * | 2009-07-28 | 2011-04-01 | Cku Inc | Heat exchanger using multiple pipes |
| CN103629952A (en) * | 2012-08-29 | 2014-03-12 | 洛阳麦达斯铝业有限公司 | Tubular heat exchanger, method for manufacturing tubular heat exchanger and heat exchange equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225523A (en) * | 2016-07-22 | 2016-12-14 | 中国科学院理化技术研究所 | Alternating flow heat exchanger |
| CN111609748A (en) * | 2019-02-25 | 2020-09-01 | 中国科学院理化技术研究所 | Alternating flow heat exchanger and alternating flow system |
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| PB01 | Publication | ||
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Application publication date: 20151007 |