CN104006693B - Opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element - Google Patents
Opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element Download PDFInfo
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- CN104006693B CN104006693B CN201410187560.2A CN201410187560A CN104006693B CN 104006693 B CN104006693 B CN 104006693B CN 201410187560 A CN201410187560 A CN 201410187560A CN 104006693 B CN104006693 B CN 104006693B
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- heat
- fillet
- thermal resistance
- radiating fin
- finned tube
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Abstract
The invention discloses an opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element and belongs to the technical field of heat exchanging. The opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element comprises radiating fins and a rectangular heat transmission flat tube. The radiating fins are oblique opposite-rounded-corner ripple breaking fins, the fins and the heat transmission flat tube are integrally formed, and welding is of no need. Contact heat resistance is of no need, heat transmission efficiency is high, a manufacturing technology is simple, the structure is compact, size is small, anti-shocking capacity is high, and accordingly the opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element can be widely used in heat exchangers of various products such as an air conditioner, cooling equipment and vehicles.
Description
Technical field
The present invention relates to it is a kind of be applied to all kinds of heat exchangers to the contactless thermal resistance heat transfer element of fillet oblique fracture formula finned tube,
Belong to technical field of heat exchange.
Background technology
The heat transfer element used on the heat exchangers such as existing air-conditioner, vehicle, refrigeration plant is typically by copper pipe, aluminum pipe or micro- logical
Deferent and aluminum fin-stock are constituted, and the heat-transfer pipe and radiating fin of heat transfer element are split-type structural, generally using tube expansion or soldering
Method connects, and manufacture and processing technique are complex.Thermal contact resistance is larger between its fin and heat-transfer pipe；And vibration resistance compared with
Difference, some heat exchanger (such as engineering machinery) work under bad environment, after heat transfer element operation certain hour, radiating fin and heat-transfer pipe
Junction often occur local release, or even produce fracture, so also can enlarged contact thermal resistance, cause its heat transfer property show
Write and decline；Simultaneously as China's copper resource is deficient, and it is surging for manufacturing the copper material price of heat-transfer pipe in recent years, considerably increase
The production cost of heat exchanger.In order to avoid disadvantages described above, the present invention devises a kind of to the contactless heat of fillet oblique fracture formula finned tube
Resistance heat transfer element, the heat transfer element is aluminum monolithic construction, and contactless thermal resistance between radiating fin and heat-transfer pipe improves biography
Hot property；It is inclined that the thermal boundary layer of air side hot fluid has been cut off to the disconnected wing fin of fillet ripplet, while enhancing gas side
Perturbation to air, than the heat transfer efficiency that heat transfer component of sharp-peak round-valley type corrugated fin-pipe improves gas side；Rectangle is conducted heat
The all-in-one-piece wing fin that breaks to fillet ripplet in pipe both sides has the effect of reinforcement, than the heat transfer of spike circus formula corrugated finned pipe
Element further enhancing the pressure performance of heat-transfer pipe, meet air-conditioning heat exchanger heat transfer media operation pressure requirements；With tradition string
The heat transfer element of piece tube-expanding type or welding type Split type structure is compared, to the contactless thermal resistance heat transfer element of fillet oblique fracture formula finned tube
Heat transfer property improves 10%-40%；Compared with heat transfer component of sharp-peak round-valley type corrugated fin-pipe, to fillet fillet ripplet shape
Disconnected wing radiating fin and heat transfer flat tube between be in (0 ° of α<α<90 °) angle of inclination, while curved, in identical heat transfer element
Under conditions of height, what the area of dissipation of the radiating fin of the contactless thermal resistance heat transfer element of fillet oblique fracture formula finned tube was increased is big
About 2%, make heat-transfer capability be further enhanced；Meanwhile, to the contactless thermal resistance heat transfer element processing of fillet oblique fracture formula finned tube
Forming technology is simple, and production efficiency is improved, and reduces production cost.
The content of the invention
The present invention design to the contactless thermal resistance heat transfer element of fillet oblique fracture formula finned tube by radiating fin and heat transfer tube group
It is aluminum monolithic construction into, radiating fin and heat-transfer pipe, is integrally machined molding, radiating fin is inclined to fillet ripplet
Disconnected wing fin, the disconnected wing fin junior unit length of each ripple is S1, it is highly H, there is the fillet ripplet that two radiuses are r；
Spacing is S between two ripplets2, seamlessly transitted by fillet of two radiuses for R；Radiating fin is located at the upper and lower of heat-transfer pipe
Both sides, spacing is S between radiating finf, radiating fin thickness is δ, is highly Hp；It is W that heat-transfer pipe is section thickness1, width is
L1Narrow rectangular tube, multiple not connected rectangular channels, rectangular channel section thickness are evenly arranged vertically in heat-transfer pipe
For W2, width is L2, the spacing between each rectangular channel is L3。
The present invention design to the contactless thermal resistance heat transfer element of fillet oblique fracture formula finned tube, than existing by copper pipe, aluminum
The heat exchanger heat transfer element and spike of the split-type structural that pipe or micro-channel tubes are connected with aluminum fin-stock by tube expansion or welding manner
Circus formula corrugated finned pipe heat transfer element is compared, with advantages below：
(1) heat transfer property is significantly improved.The radiating of the contactless thermal resistance heat transfer element of this pair of fillet oblique fracture formula finned tube
Fin and heat-transfer pipe adopt monolithic construction, are integrally machined molding, eliminate thermal contact resistance, while radiating fin is inclined right
The disconnected wing fin of fillet ripplet, can cut off the thermal boundary layer of hot fluid, be conducive to heat convection；Simultaneously fluid skims over radiating fin
Flow resistance is less during piece, and flow-disturbing is more violent, and the performance of heat transfer element is not fully exerted, thus heat transfer property is good,
Compared with existing heat transfer element, the contactless thermal resistance heat transfer element Coefficient K of the disconnected wing formula finned tube of this pair of fillet can improve 10-
40%.
(2) it is in (0 ° of α between disconnected wing fin to fillet ripplet and heat transfer flat tube<α<90 °) angle of inclination, while being in
Arc, under the conditions of heat transfer element height identical, compared with heat transfer component of sharp-peak round-valley type corrugated fin-pipe, radiating fin
About the 2% of area of dissipation increase so that the heat-transfer capability of the contactless thermal resistance heat transfer element of fillet oblique fracture formula finned tube is obtained
Further enhance.
(3) because heat transfer property is greatly improved, under conditions of identical heat is transmitted, with widely used point now
Body formula heat exchanger heat transfer element is compared, and the volume and weight of the contactless thermal resistance finned tube heat transfer element of this pair of fillet oblique fracture formula can
15-39% is reduced, lot of materials is saved, production cost is reduced.
(4) radiating fin and heat-transfer pipe are integrated, and without the need for welding, without pickling industry, are simplifying manufacturing process
It is simultaneously again free from environmental pollution；Simultaneously in the middle of inclined disconnected wing fin to fillet ripplet, the effect with reinforcement, be conducive to
Vibration resistance is improved, makes radiating fin acutely not produce disengaging because of vibration with heat-transfer pipe.
The concrete structure of the present invention is given by accompanying drawing 1,2,3.
Description of the drawings
Accompanying drawing 1 is this front view to the contactless thermal resistance heat transfer element of fillet oblique fracture formula finned tube；
Accompanying drawing 2 is this top view and details enlarged drawing to the contactless thermal resistance heat transfer element of fillet oblique fracture formula finned tube；
Accompanying drawing 3 is this left view to the contactless thermal resistance heat transfer element of fillet oblique fracture formula finned tube.
Specific embodiment
As shown in Figure 1, 2, 3, present invention design to the contactless thermal resistance heat transfer element of fillet oblique fracture formula finned tube by radiating
Fin 1 and heat transfer flat tube 2 are constituted.Go out in the direct backing-off cutting in upper and lower both sides of heat transfer flat tube 2 inclined to the disconnected wing wing of fillet ripplet
Piece 1, radiating fin 1 and heat transfer flat tube 2 are integrated, and during backing-off cutting, it is natural between radiating fin 1 and heat transfer flat tube 2
In (0 ° of α<α<90 °) angle of inclination, while in radius be R1Arc, the spacing between radiating fin 1 be Sf, radiating fin 1
Fin thickness be δ, be highly Hp(see accompanying drawing 3)；The inclined fin junior unit wavelength to the disconnected wing fin 1 of fillet ripplet is
S1, two radiuses are S for spacing between the fillet ripplet of r2, the wing fin junior unit that breaks highly is H (see accompanying drawing 2)；Heat transfer flat tube
2 section thicknesses are W1, width is L1, 2～10 not connected rectangular channels 3 are evenly arranged vertically in heat transfer flat tube 1
(see accompanying drawing 1), the section thickness of rectangular channel 3 is W2, width is L2, the spacing between each rectangular channel 3 is L3.Heat transfer element work
When making, one end of each rectangular channel 3 of the high fluid of temperature (such as water or oil) from heat transfer flat tube 2 flows into, then logical from rectangle
The other end in road 3 flows out, and the relatively low air of the temperature then horizontal radiating fin 1 plunderred outside heat transfer flat tube 2, so as to realize the flat tube that conducts heat
Hot fluid in 2 and flow through radiating fin 1 cold air between heat exchange.
Claims (2)
1. a kind of to the contactless thermal resistance heat transfer element of fillet oblique fracture formula finned tube, including heat-transfer pipe and fillet ripplet shape is broken
Wing radiating fin, wherein, heat-transfer pipe and disconnected wing radiating fin are aluminum monolithic construction, are integrally machined molding, described disconnected wing
Radiating fin is inclined to the disconnected wing radiating fin of fillet ripplet, can cut off the thermal boundary layer of hot fluid, each disconnected wing
Radiating fin junior unit length is S1, be highly H, have two radiuses be r fillet ripplet, between two fillet ripplets between
Away from for S2, being seamlessly transitted by fillet of two radiuses for R, the wing radiating fin that breaks is located at the upper and lower both sides of heat-transfer pipe.
2. according to claim 1 to the contactless thermal resistance heat transfer element of fillet oblique fracture formula finned tube, it is characterised in that：Disconnected wing
Angle of inclination in α between radiating fin and heat-transfer pipe, while being R in radius1Arc, wherein 0 °<α<90°.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187560.2A CN104006693B (en) | 2014-05-06 | 2014-05-06 | Opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187560.2A CN104006693B (en) | 2014-05-06 | 2014-05-06 | Opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104006693A CN104006693A (en) | 2014-08-27 |
| CN104006693B true CN104006693B (en) | 2017-05-10 |
Family
ID=51367473
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410187560.2A Expired - Fee Related CN104006693B (en) | 2014-05-06 | 2014-05-06 | Opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element |
Country Status (1)
| Country | Link |
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| CN (1) | CN104006693B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382770A (en) * | 2016-09-27 | 2017-02-08 | 深圳山源电器股份有限公司 | Condenser |
| CN109944677B (en) * | 2019-03-01 | 2024-03-01 | 冀凯河北机电科技有限公司 | Novel engine fin for air engine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201034431Y (en) * | 2007-01-19 | 2008-03-12 | 温晋生 | Finned tube for air cooling condensator |
| CN101509731A (en) * | 2009-03-06 | 2009-08-19 | 华南理工大学 | Special-shaped microchannel and exterior corrugated fin integration molding heat exchanger |
| CN202083266U (en) * | 2011-03-16 | 2011-12-21 | 深圳山源电器有限公司 | Heat transfer element with pipe integrated with corrugated fins |
| CN202195738U (en) * | 2011-03-16 | 2012-04-18 | 深圳山源电器有限公司 | Heat transfer component of sharp-peak round-valley type corrugated fin-pipe |
| CN202382605U (en) * | 2011-12-26 | 2012-08-15 | 杨智勇 | Heat exchanger with low external fluid resistance, small vortex and high heat exchange efficiency |
| CN203561263U (en) * | 2013-11-22 | 2014-04-23 | 茂名重力石化机械制造有限公司 | Oblique-fin finned tube |
-
2014
- 2014-05-06 CN CN201410187560.2A patent/CN104006693B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN104006693A (en) | 2014-08-27 |
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Granted publication date: 20170510 Termination date: 20180506 |