CN102954625A - Elliptic or sub-elliptical tube heat exchanger - Google Patents
Elliptic or sub-elliptical tube heat exchanger Download PDFInfo
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- CN102954625A CN102954625A CN2012104022335A CN201210402233A CN102954625A CN 102954625 A CN102954625 A CN 102954625A CN 2012104022335 A CN2012104022335 A CN 2012104022335A CN 201210402233 A CN201210402233 A CN 201210402233A CN 102954625 A CN102954625 A CN 102954625A
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- approximate ellipsoidal
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Abstract
The invention discloses an elliptic or sub-elliptical tube heat exchanger. The heat exchanger is a straight-shaped, L-shaped, U-shaped or zig-zag heat exchanger which is manufactured by a straight-shaped heat transfer workpiece, and the straight-shaped heat transfer workpiece comprises coils the radial sections of which are of elliptic shapes or sub-elliptical shapes and fins which are provided with corresponding perforations and sleeved on the coils; and the sub-elliptical shape is a closed graph which is composed of a plurality of sections of curves with different curvatures, a plurality of sections of straight lines or combination of a plurality of sections of curves with different curvatures and straight lines. The heat exchanger is adopted to increase the effective heat exchange area, the heat transfer wind resistance is greatly reduced, the passing speed of a media in a pipe is slowed down, and the heat transfer effect and heat transfer energy efficiency are effectively improved; and meanwhile, the volume is reduced, the used material and cost are reduced, and the production efficiency is improved.
Description
Technical field
The present invention relates to heat exchanger, more particularly, relate to a kind of ellipse or approximate ellipsoidal heat exchange of heat pipe.
Background technology
Current in the equipment of mechanical compression refrigeration, usually can use the heat-exchanger rigs such as condenser, evaporimeter, by the refrigerant loses heat of condenser to HTHP, and then enter indoor by the evaporimeter swelling heat absorption, thereby reach the effect of refrigeration.And the radiating effect of heat-exchanger rig will directly have influence on the refrigeration efficiency of whole refrigeration plant.
Traditional heat-exchanger rig is to adopt disk pipe (radial section is for circular) and be sheathed on radiating fin (perforation also is circle) on the coil pipe, heat and outside air exchange with medium in the pipe, to reach the purpose of heat radiation, its mainly be by wind when radiating fin is blown over dissipation of heat, but because the windage of disk pipe is larger, and there is eddy current in the lee side of disk pipe, so that the back of disk pipe have wind less than the dead angle, therefore had a strong impact on the radiating effect of wind-force, thus the efficient of impact refrigeration.In addition, because medium circulates comparatively smooth and easyly in the disk pipe, flow velocity is very fast, equally also so that radiating effect is not good.The heat-exchange capacity of such heat exchanger is relatively poor, in order to reduce temperature, sometimes need to make the heat exchanger (two rows even two rows arrange above the merging) of larger volume, greatly increased so again production cost and technology difficulty, therefore can't satisfy the requirement of highly effective refrigeration.
Summary of the invention
For the above-mentioned shortcoming that exists in the prior art, the purpose of this invention is to provide a kind of ellipse or approximate ellipsoidal heat exchange of heat pipe, this heat exchanger can improve its heat exchange area, improves heat exchange efficiency, reduces volume, reduces cost.
For achieving the above object, the present invention adopts following technical scheme:
This ellipse or approximate ellipsoidal heat exchange of heat pipe are the in-line that is made into by in-line heat exchange workpiece, L shaped, U-shaped or amount to needle recuperator, described in-line heat exchange workpiece comprises that radial section is the coil pipe of ellipse or approximate ellipsoidal and has respective perforations and be sheathed on fin on the coil pipe, the closed figure that described approximate ellipsoidal is connected and is combined into straight line for the curve by the curve of some sections different curvature, some sections straight lines or some sections different curvature.
Described radial section is that the coil pipe of ellipse or approximate ellipsoidal is to be that the round metal tube of 4mm～12mm is stretched drawing-die or pressing mold machine-shaping by pushing away by diameter; and the major axis of described ellipse or approximate ellipsoidal is 5.5mm～17mm, and minor axis is 3mm～6.5mm.
The quantity of described coil pipe is more than a row or arranges, and the above coil pipe of a row is head-on installed and is arranged in in-line arrangement or intersection row.
Described fin width scope is 13mm～26mm, offers N the ellipse of arranging or approximate ellipsoidal perforation on each fin, and the centre-to-centre spacing of adjacent holes is 13.5mm～25mm, and also has shutter or corrugated plate between the adjacent holes.
Also be provided with the internal thread tooth on the inside pipe wall of described coil pipe, the addendum angle scope of internal thread tooth is 30 °～50 °, and the helical angle scope is 18 °～30 °, and the tooth depth scope is 0.1mm～0.2mm.
Whole or part in the described coil pipe is provided with disturbing flow device.
Described disturbing flow device is disturbed flow pipe, and the radial section of disturbed flow pipe is O shape.
Described disturbing flow device is spoiler, and the radial section of spoiler is N shape, M shape or by several interconnective shapes of W side by side.
Offer densely covered perforation aperture on the sagittal plane of described spoiler.
The diameter range of described perforation aperture is 1mm～1.5mm.
In technique scheme, ellipse of the present invention or approximate ellipsoidal heat exchange of heat pipe are the in-line that is made into by in-line heat exchange workpiece, L shaped, U-shaped or amount to needle recuperator, described in-line heat exchange workpiece comprises that radial section is the coil pipe of ellipse or approximate ellipsoidal and has respective perforations and be sheathed on fin on the coil pipe, the closed figure that described approximate ellipsoidal is connected and is combined into straight line for the curve by the curve of some sections different curvature, some sections straight lines or some sections different curvature.Adopt this heat exchanger can increase the available heat exchange area, greatly reduce its heat exchange windage, and slow down medium the pipe in Negotiation speed, thereby Effective Raise its heat transfer effect and heat exchange efficiency, can also reduce simultaneously its volume, reduce and use material and cost, enhance productivity.
Description of drawings
Fig. 1 is the structure schematic top plan view of in-line heat exchange workpiece of the present invention;
Fig. 2 is the structure schematic top plan view (L shaped) of ellipse of the present invention or approximate ellipsoidal heat exchange of heat pipe;
Fig. 3 is the structure schematic side view (L shaped) of ellipse of the present invention or approximate ellipsoidal heat exchange of heat pipe;
Fig. 4 is the structure schematic top plan view (U-shaped) of ellipse of the present invention or approximate ellipsoidal heat exchange of heat pipe;
Fig. 5 is the schematic perspective view (amounting to shape) of ellipse of the present invention or approximate ellipsoidal heat exchange of heat pipe;
Fig. 6 is the structural representation for the U-shaped pipe of length of making coil pipe of the present invention.
Fig. 7 is the inner thread schematic diagram of coil pipe of the present invention;
Fig. 8 is along the cross-sectional schematic of A-A line among Fig. 6 (in establish by-pass);
Fig. 9 is along the cross-sectional schematic of A-A line among Fig. 6 (in establish M shape stream sheet).
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with drawings and Examples.
See also Fig. 1～Fig. 5 (all having omitted the U-shaped tube connector and the isocon that connect ellipse or approximate ellipsoidal coil pipe among the figure), ellipse of the present invention or approximate ellipsoidal heat exchange of heat pipe are the in-line that is made into by in-line heat exchange workpiece, L shaped, U-shaped or amount to needle recuperator.This in-line heat exchange workpiece comprises that radial section is the coil pipe 2 of ellipse or approximate ellipsoidal and has respective perforations and be sheathed on fin 1 on the coil pipe 2, the closed figure that described approximate ellipsoidal is connected and is combined into straight line for the curve by the curve of some sections different curvature, some sections straight lines or some sections different curvature.Described radial section is that the coil pipe 2 of ellipse or approximate ellipsoidal is to be 4mm～12mm(such as φ 4mm, φ 6.35mm, φ 7mm, φ 7.94mm, φ 9.52mm, 12mm etc. by diameter) round metal tube stretch by pushing away, drawing-die and pressing mold machine-shaping, and the major axis of described ellipse or approximate ellipsoidal is 5.5mm～17mm, and minor axis is 3mm～6.5mm.Wherein, the in-line heat exchanger is directly made (not shown) by in-line heat exchange workpiece, and L shaped, U-shaped heat exchanger is to carry out the one bending by coil pipe 2 and fin 1 to in-line heat exchange workpiece, being bent into L shaped (seeing Fig. 2, Fig. 3), U-shaped (see figure 4), is to be made by the splicing of in-line heat exchange workpiece and amount to the shape (see figure 5).In addition, described U-shaped or to amount to shape be according to the actual design needs, the non-closed figure that links to each other with straight line or splice and combine by the curve of the curve of some sections different curvature, some sections straight lines or some sections different curvature.
L shaped as example take wherein, described coil pipe 2 is designed to after the bending three sections, one section is the horizontal cross straight tube-like, its length and outdoor machine of air-conditioner (seeing the dotted line frame among Fig. 2) length is complementary; Interlude is the circular-arc of bending forming, just in time is located at one jiao of place of outer machine; Another section is the vertical straight tube-like of level, and its length and outdoor machine of air-conditioner width are complementary; Fin 1 is located in respectively on three sections of coil pipe 2, and is vertical configuration with the corresponding coil pipe 2 that wears the position, and the fin 1 of being located on the interlude is and the one bending and molding.The quantity of described coil pipe 2 is a row.The circular-arc of described interlude is quadrant.
As an embodiment, coil pipe 2 of the present invention comprises middle straight pipeline section 11 and the both sides U-shaped corner bevelling pipeline section 12 that metals such as adopting copper, aluminium or alloy is made, the radial section of described both sides corner bevelling pipeline section 12 is circular, be used for the vertical headtotail between the middle straight tube, and the radial section of described middle straight pipeline section 11 is ellipse or approximate ellipsoidal, is used for wearing the radiating fin 1 that ellipse or approximate ellipsoidal perforation are arranged equally at middle straight pipeline section 11.Need to prove at this, coil pipe 2 of the present invention can adopt the U-shaped Guan Yiduan welding of the length among Fig. 6 U-shaped corner bevelling pipe to make, and also can adopt straight tube two ends welding U-shaped corner bevelling pipe to make and form.
And described fin width scope is 13mm～26mm, offers N the ellipse of arranging or approximate ellipsoidal perforation on each fin, and the centre-to-centre spacing of adjacent holes is 13.5mm～25mm, and also has shutter or ripple hole between the adjacent holes.
Please in conjunction with Fig. 7～shown in Figure 9, the inside pipe wall of described coil pipe 2 is provided with internal thread tooth 13, and internal thread tooth 13 can be arranged on middle straight pipeline section 11, also can all arrange in middle straight pipeline section 11 and both sides corner bevelling pipeline section 12.Through repeatedly repetition test and technology, adopt following design size effect better: the addendum angle scope of this internal thread tooth 13 is 30～50 °, and the helical angle scope is 18～30 degree, and the tooth depth scope is 0.1mm～0.2mm.In addition, as required, the whole or part in coil pipe 2 is provided with disturbing flow device.Described disturbing flow device can be disturbed flow pipe or spoiler.Wherein, the radial section of described disturbed flow pipe is O shape (see figure 8).The radial section of described spoiler can be N shape, M shape or by several interconnective shapes of W side by side.The radial section of the spoiler 14 shown in Fig. 9 namely is M shape.In addition, also offer densely covered perforation aperture 15 on the sagittal plane of described spoiler 14, the diameter range of described perforation aperture 15 is 1mm～1.5mm.
Adopt coil pipe 2 of the present invention to cooperate the heat exchanger of radiating fin 1 made with ellipse or approximate ellipsoidal perforation, because the middle straight tube of its coil pipe 2 adopts ellipse or approximate ellipsoidal, can greatly reduce the air side flow resistance, side medium has increased wetted perimeter and disturbance, strengthened heat transfer, heat transfer coefficient can improve greatly.When wind blows, can there be eddy current in lee face at the rear portion of coil pipe 2, the windage when therefore greatly reducing heat radiation, and also there is not the heat radiation dead angle in the coil pipe 2 of oval and approximate ellipsoidal, so greatly improved radiating effect, thus heat exchange efficiency improved.And the coil pipe 2 of shape like this, its surface is nearly streamlined, and the wind-force that also can make flows more smooth and easy, further reduces windage, improves the heat exchange efficiency, and the COP value can run to more than 3.2.In addition, like this coil pipe 2 of shape, the speed of flowing through of its interior media is starkly lower than round coil 2, also so that the heat transfer effect of medium further improve.
The raising of heat transfer effect except aforementioned tube by adopting the pipe inner structure of internal thread tooth 13 and disturbing flow device, also has following advantage:
1, increases the intraductal heat exchange area, be conducive to the boiling heat transfer behave.
2, after high pressure-temperature gaseous state liquid mixed media working medium enters coil pipe 2, the densely covered perforation aperture that the medium working medium of vapour, liquid is offered from spoiler 14 when flowing in coil pipe 2 flows into another side, so that increase the vaporization nucleus calculation, the medium working medium of De Qi ﹑ liquid is fully mixed in the coil pipe 2, and it is contacted evenly with ellipse or approximate ellipsoidal coil pipe 2.Guarantee the transmission of heating power in the pipe, greatly improve heat exchange and render a service.
Detect the check of mechanical industry heat exchanger product quality supervision inspection center of institute through the Hefei general-purpose machinery and electrical applicances, adopt heat exchanger of the present invention, its Coefficient K 〉=86.99W/m
2℃, far above the K 〉=40W/m among the industry standard JB/T 7695.5-1995
2℃ regulation.
In addition, adopt the present invention that the outdoor machine of air-conditioner heat exchanger of a plurality of famous brand names is in the market transformed, experimental test result and performance comparison before and after transforming are seen such as following table 1～table 3:
Table 1
Table 2
Table 3
By above-mentioned test, proved that equally also condenser of the present invention compares with the prior art that adopts round coil, have a significant effect, cold anharmonic ratio, volume ratio (volume that the specific refrigerating effect air-conditioning is shared), efficiency when all are better than existing heat-exchanger rig on the key technology economic indicator such as manufacturing cost.
Those of ordinary skill in the art will be appreciated that, above embodiment illustrates the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (10)
1. an ellipse or approximate ellipsoidal heat exchange of heat pipe is characterized in that:
This heat exchanger is the in-line that is made into by in-line heat exchange workpiece, L shaped, U-shaped or amounts to needle recuperator, described in-line heat exchange workpiece comprises that radial section is the coil pipe of ellipse or approximate ellipsoidal and has respective perforations and be sheathed on fin on the coil pipe, the closed figure that described approximate ellipsoidal is connected and is combined into straight line for the curve by the curve of some sections different curvature, some sections straight lines or some sections different curvature.
2. ellipse as claimed in claim 1 or approximate ellipsoidal heat exchange of heat pipe is characterized in that:
Described radial section is that the coil pipe of ellipse or approximate ellipsoidal is to be that the round metal tube of 4mm～12mm is stretched drawing-die or pressing mold machine-shaping by pushing away by diameter; and the major axis of described ellipse or approximate ellipsoidal is 5.5mm～17mm, and minor axis is 3mm～6.5mm.
3. ellipse as claimed in claim 1 or approximate ellipsoidal heat exchange of heat pipe is characterized in that:
The quantity of described coil pipe is more than a row or arranges, and the above coil pipe of a row is head-on installed and is arranged in in-line arrangement or intersection row.
4. ellipse as claimed in claim 1 or approximate ellipsoidal heat exchange of heat pipe is characterized in that:
Described fin width scope is 13mm～26mm, offers N the ellipse of arranging or approximate ellipsoidal perforation on each fin, and the centre-to-centre spacing of adjacent holes is 13.5mm～25mm, and also has shutter or corrugated plate between the adjacent holes.
5. ellipse as claimed in claim 1 or approximate ellipsoidal heat exchange of heat pipe is characterized in that:
Also be provided with the internal thread tooth on the inside pipe wall of described coil pipe, the addendum angle scope of internal thread tooth is 30 °～50 °, and the helical angle scope is 18 °～30 °, and the tooth depth scope is 0.1mm～0.2mm.
6. ellipse as claimed in claim 5 or approximate ellipsoidal heat exchange of heat pipe is characterized in that:
Whole or part in the described coil pipe is provided with disturbing flow device.
7. ellipse as claimed in claim 6 or approximate ellipsoidal heat exchange of heat pipe is characterized in that:
Described disturbing flow device is disturbed flow pipe, and the radial section of disturbed flow pipe is O shape.
8. ellipse as claimed in claim 6 or approximate ellipsoidal heat exchange of heat pipe is characterized in that:
Described disturbing flow device is spoiler, and the radial section of spoiler is N shape, M shape or by several interconnective shapes of W side by side.
9. ellipse as claimed in claim 8 or approximate ellipsoidal heat exchange of heat pipe is characterized in that:
Offer densely covered perforation aperture on the sagittal plane of described spoiler.
10. ellipse as claimed in claim 9 or approximate ellipsoidal heat exchange of heat pipe is characterized in that:
The diameter range of described perforation aperture is 1mm～1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104022335A CN102954625A (en) | 2012-10-19 | 2012-10-19 | Elliptic or sub-elliptical tube heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104022335A CN102954625A (en) | 2012-10-19 | 2012-10-19 | Elliptic or sub-elliptical tube heat exchanger |
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| CN102954625A true CN102954625A (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012104022335A Pending CN102954625A (en) | 2012-10-19 | 2012-10-19 | Elliptic or sub-elliptical tube heat exchanger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471440A (en) * | 2013-09-28 | 2013-12-25 | 广东万和新电气股份有限公司 | Tube-fin heat exchanger and assembly thereof |
| CN108800667A (en) * | 2018-09-03 | 2018-11-13 | 杨禄 | It is double for ground-source boiler |
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|---|---|---|---|---|
| CN85103367A (en) * | 1985-05-13 | 1986-12-24 | 日立电线株式会社 | Inner surface has the heat-transfer pipe of screw thread |
| CN2795785Y (en) * | 2005-03-21 | 2006-07-12 | 姚德林 | High efficiency heat exchanger fins |
| WO2007127716A2 (en) * | 2006-04-25 | 2007-11-08 | Advanced Heat Transfer Llc | Heat exchangers based on non-circular tubes with tube-endplate interface for joining tubes of disparate cross-sections |
| CN201364066Y (en) * | 2008-12-30 | 2009-12-16 | 南通华信中央空调有限公司 | Fin-type heat exchanger |
| CN201892467U (en) * | 2010-11-25 | 2011-07-06 | 上海大俊凯电器科技有限公司 | Novel efficient heat exchanger |
| CN202304567U (en) * | 2011-08-31 | 2012-07-04 | 姚德林 | Heat exchanger coil pipe with built-in spoiler |
| CN202928206U (en) * | 2012-10-19 | 2013-05-08 | 上海大俊凯电器科技有限公司 | Elliptic or approximate elliptic tube heat exchanger |
-
2012
- 2012-10-19 CN CN2012104022335A patent/CN102954625A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103367A (en) * | 1985-05-13 | 1986-12-24 | 日立电线株式会社 | Inner surface has the heat-transfer pipe of screw thread |
| CN2795785Y (en) * | 2005-03-21 | 2006-07-12 | 姚德林 | High efficiency heat exchanger fins |
| WO2007127716A2 (en) * | 2006-04-25 | 2007-11-08 | Advanced Heat Transfer Llc | Heat exchangers based on non-circular tubes with tube-endplate interface for joining tubes of disparate cross-sections |
| CN201364066Y (en) * | 2008-12-30 | 2009-12-16 | 南通华信中央空调有限公司 | Fin-type heat exchanger |
| CN201892467U (en) * | 2010-11-25 | 2011-07-06 | 上海大俊凯电器科技有限公司 | Novel efficient heat exchanger |
| CN202304567U (en) * | 2011-08-31 | 2012-07-04 | 姚德林 | Heat exchanger coil pipe with built-in spoiler |
| CN202928206U (en) * | 2012-10-19 | 2013-05-08 | 上海大俊凯电器科技有限公司 | Elliptic or approximate elliptic tube heat exchanger |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471440A (en) * | 2013-09-28 | 2013-12-25 | 广东万和新电气股份有限公司 | Tube-fin heat exchanger and assembly thereof |
| CN103471440B (en) * | 2013-09-28 | 2016-05-18 | 广东万和新电气股份有限公司 | Fin-tube type heat exchanger and assembly thereof |
| CN108800667A (en) * | 2018-09-03 | 2018-11-13 | 杨禄 | It is double for ground-source boiler |
| CN108800667B (en) * | 2018-09-03 | 2024-01-23 | 杨禄 | Double-supply ground source boiler |
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Application publication date: 20130306 |