EP1527311A1 - Flat pipe-shaped heat exchanger - Google Patents
Flat pipe-shaped heat exchangerInfo
- Publication number
- EP1527311A1 EP1527311A1 EP03766307A EP03766307A EP1527311A1 EP 1527311 A1 EP1527311 A1 EP 1527311A1 EP 03766307 A EP03766307 A EP 03766307A EP 03766307 A EP03766307 A EP 03766307A EP 1527311 A1 EP1527311 A1 EP 1527311A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- fin
- rib
- exchanger according
- corrugated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
- F28F1/128—Fins with openings, e.g. louvered fins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
- F28D2021/0084—Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
- F28D2021/0091—Radiators
- F28D2021/0094—Radiators for recooling the engine coolant
Definitions
- the invention relates to a heat exchanger, in particular for motor vehicles, with a soldered heat transfer network consisting of flat tubes and corrugated fins, according to the preamble of patent claim 1, known from US Pat. No. 5,271,458.
- the flat tube is replaced by a liquid and / or vaporous medium, eg. B.
- Coolant or refrigerant flows through, which dissipates its heat to the ambient air or absorbs heat from the ambient air.
- two very different heat capacity flows are in heat exchange with each other.
- additional measures must be taken on the air side to improve the heat transfer there. This is done by arranging corrugated fins between the flat tubes, which increases the heat exchange area on the air side.
- the surface of the corrugated fins is slotted, that is, covered with gills, which break up the boundary layer flows that form and a deflection of the air flow from one flow channel to the other and thus an extension of the flow path for the air.
- corrugated ribs there are basically two different types of corrugated ribs, the so-called V-type with rib surfaces arranged at an angle to one another, known from US Pat. No. 3,250,325.
- the second embodiment of the corrugated fin is the so-called U-type, in which the fin surfaces and thus the gills arranged on them are aligned parallel to one another - this U-type was known from US Pat. No. 5,271,458. From a thermodynamic point of view, the U-type has several advantages over the V-type, namely a relatively even flow through the roughly rectangular rib channel, a uniform flow deflection through the gills, a higher air throughput and thus a higher heat transfer performance.
- the V-type is more advantageous because with a constant rib bending radius for the shaft crest, different rib densities can be produced by gathering or pulling the corrugated strip apart.
- the so-called parallel rib is also determined by the bending radius of the wave crest, the rib density or the rib spacing.
- Another disadvantage of the known parallel rib is that the gill length is dependent on the rib bending radius, i. H. the larger the radius, the shorter the gill, which has a negative impact on performance.
- the well-known wave crest formed by a constant curvature is replaced by an arch piece which is composed of three sections of different curvatures: the middle section has a comparatively small curvature, ie , H. it is almost flat and is therefore largely against the outer surface of the pipe wall.
- the radius of curvature of the arc piece is preferably greater in the central region than a rib height RH of the corrugated fin, particularly preferably 5 to 15 times the rib height RH.
- a middle section is adjoined by two outer sections with relatively large curvatures, it being possible for the two curvatures to be borrowed differently, so that the entire arch piece has an asymmetrical course to the central plane.
- a first outer section preferably has a radius of curvature R2 which is less than half a rib height RH of the corrugated fin, particularly preferably 3 to 20% of the rib height RH.
- a radius of curvature R3 of the second outer section of the curved piece is preferably at least as large as the radius of curvature R2 of the first outer section.
- This rib geometry in particular that of the curved piece, can be produced relatively easily on conventional rib rollers.
- the advantages of a parallel or rectangular rib are retained, ie a relatively wide soldering area with good heat transfer and possibly one large gill length, which extends almost over the entire height of the ribs. If the rib surfaces deviate somewhat (up to about 6 degrees) from the parallelism, in which case they can still be regarded as essentially parallel within the scope of the invention, the thermodynamic advantages of the parallel rib are hardly affected.
- the rib geometry according to the invention can be used in particular in motor vehicle heat exchangers such as coolant coolers, radiators, condensers and evaporators.
- the rib surfaces are covered with gills, which preferably have a gill depth LP in a range from 0.5 to 1.5 mm, particularly advantageously in a range from 0.7 to 1.1 mm, with a gill angle between 20 and 35 degrees, particularly advantageously between 24 and 30 degrees.
- gills act antesstei- hesitantly, because thereby the deflection of the air is improved by a channel in the neighboring, in turn resulting in a longer flow path for 'results in the air.
- the gill depth is . in the range of 0.9 to 1.1 mm with a gill angle of 23 to 30 degrees, favorable for a pipe / fin system with a depth of 40 to 52 mm and a fin density of 45 to 65 fins / dm, which means a fin spacing of 1.538 corresponds to up to 2.222 mm.
- the rib height for such a system is advantageously 7 to 9 mm.
- FIG. 3 shows a further longitudinal section in the plane III-III according to FIG. 2.
- Fig. 1 shows a so-called parallel rib 1, the flat tubes shown only partially between two 2, 3 extends.
- the parallel or corrugated fin 1 and the flat tubes 2, 3 form a soldered network, not shown, of a heat exchanger, for.
- B. a coolant cooler for cooling an internal combustion engine of a motor vehicle or a condenser for a motor vehicle air conditioning system.
- the corrugated fin 1 has in each case two mutually parallel, flat ribs surfaces 4, 5, which are "connected by an arc stucco 6.
- the sheet stucco 6 located respectively on the flat tubes 2, 3 and is soldered to them.
- the planar rib surfaces 4, 5 are equipped with gills 7 which have a longitudinal extension LL
- the corrugated fin 1 has a fin height RH which is greater than the gill length LL
- the fin surfaces 4, 5, the arch piece 6 and the tube wall 2, 3 each form an approximately rectangular fin channel 8
- the corrugated fin 1 has a specific fin density, which is characterized by the fin pitch, ie the dimension FP.
- All three sections are formed by radii, the middle section having a relatively large radius R1 of approximately 50 to 70 mm.
- the two outer radii R2 and R3 are considerably smaller, ie the radius R2 is in the range from 0.4 to 0.6 mm, while the radius R3 is greater than or equal to the radius R2.
- R3 is in the range of 0.6 to 1.1 or 1.3 mm.
- Fig. 2 shows a longitudinal section in the plane 11-11, i. H. through the rib channel 8.
- the rib surface 5 has a gill field 9, which is composed of a plurality of individual gills 7.
- the rib 5 has a rib depth RT, i. H. an extension in the air flow direction X.
- Fig. 3 shows a section in the plane III-III in Fig.2, i. H. through the gill area 9 of the rib surface 5.
- the gill area consists of front gills 7a rising to the right in the drawing, a central roof-shaped double gill 7b and rear gills 7c falling to the right.
- the gills 7a, 7b, 7c are each inclined at a gill angle ⁇ .
- gills 7a, 7c have a dimension LP which is referred to as the gill depth.
- the boundary layer of the air flow in the rib channels is broken up by the gills 7 and deflected from one rib channel 8 into the adjacent rib channel. This results in a longer flow path for the air flow, which increases the heat transfer.
- the deflection of the air flow depends on the gill angle ⁇ and the gill depth LP.
- the first embodiment relates to a condenser for an air conditioning system of a motor vehicle.
- the flat tubes of the condenser are thus of refrigerant, e.g. B. flows through R 134a.
- a heat exchanger network consisting of flat tubes and a parallel fin with the following dimensions is provided for such a condenser: Fin depth RT: 12 ⁇ RT ⁇ 20 mm.
- Rib pitch FP 1.33 mm ⁇ FP ⁇ 1.818 mm, corresponding to a rib density of 55 to 75 ribs / dm, gill angle ⁇ : 24 ° ⁇ ⁇ 30 °, gill length LL: 6.4 mm ⁇ LL ⁇ 7.2 mm, rib height RH: 6 mm ⁇ RH ⁇ 10 mm, plank depth LP: 0.7 mm ⁇ LP ⁇ 1, 1 mm,
- Ratio of Kienentiefe LP to rib pitch FP 0.385 ⁇ LP / FP ⁇ 0.825, radius of curvature R1 of the middle section of the elbow:
- a parallel fin system with the aforementioned dimensions is superior to a conventional rib system with a V-shaped rib in many respects, namely with regard to the air flow rate, the flow deflection, the homogenization of the flow speed and temperature profile and thus the heat transfer performance.
- Rib pitch FP 1, 538 ⁇ FP ⁇ 2.222 mm, corresponding to a rib density of 45 to 65 ribs / dm
- This system which is much deeper than the first embodiment, also brings a significant increase in performance compared to a comparable V-rib.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10235038 | 2002-07-31 | ||
DE10235038A DE10235038A1 (en) | 2002-07-31 | 2002-07-31 | Flat-tube heat exchanger |
PCT/EP2003/008251 WO2004013559A1 (en) | 2002-07-31 | 2003-07-25 | Flat pipe-shaped heat exchanger |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1527311A1 true EP1527311A1 (en) | 2005-05-04 |
EP1527311B1 EP1527311B1 (en) | 2016-05-04 |
Family
ID=30128586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03766307.7A Expired - Lifetime EP1527311B1 (en) | 2002-07-31 | 2003-07-25 | Flat pipe-shaped heat exchanger |
Country Status (9)
Country | Link |
---|---|
US (1) | US7882708B2 (en) |
EP (1) | EP1527311B1 (en) |
JP (1) | JP2005534888A (en) |
CN (1) | CN100373121C (en) |
AU (1) | AU2003255295A1 (en) |
BR (1) | BR0305705A (en) |
DE (1) | DE10235038A1 (en) |
WO (1) | WO2004013559A1 (en) |
ZA (1) | ZA200409593B (en) |
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CA2471969A1 (en) | 2004-06-23 | 2005-12-23 | Lionel Gerber | Heat exchanger for use in an ice machine |
JP4786234B2 (en) * | 2004-07-05 | 2011-10-05 | 昭和電工株式会社 | Heat exchanger |
JP2006132920A (en) * | 2004-07-15 | 2006-05-25 | Showa Denko Kk | Heat exchanger |
JP2006138622A (en) * | 2004-10-13 | 2006-06-01 | Showa Denko Kk | Corrugate fin and evaporator |
NL1027646C2 (en) * | 2004-12-03 | 2006-06-07 | Andries Meuzelaar | Heat exchanger for motorized transport device e.g. racing car, aircraft, has thermally conductive open-cell metal foam with number of pores per inch (ppi) that lies between 2 and 20 and thickness that lies between 5 and 50 millimeters |
WO2006059908A1 (en) * | 2004-12-03 | 2006-06-08 | Andries Meuzelaar | Heat exchanger for motorised means of transport, and motorised means of transport provided with such a heat exchanger |
US8854595B2 (en) | 2008-03-03 | 2014-10-07 | Manufacturing Resources International, Inc. | Constricted convection cooling system for an electronic display |
US8654302B2 (en) | 2008-03-03 | 2014-02-18 | Manufacturing Resources International, Inc. | Heat exchanger for an electronic display |
US8773633B2 (en) | 2008-03-03 | 2014-07-08 | Manufacturing Resources International, Inc. | Expanded heat sink for electronic displays |
US9173325B2 (en) | 2008-03-26 | 2015-10-27 | Manufacturing Resources International, Inc. | Heat exchanger for back to back electronic displays |
US8497972B2 (en) | 2009-11-13 | 2013-07-30 | Manufacturing Resources International, Inc. | Thermal plate with optional cooling loop in electronic display |
US8693185B2 (en) | 2008-03-26 | 2014-04-08 | Manufacturing Resources International, Inc. | System and method for maintaining a consistent temperature gradient across an electronic display |
US8749749B2 (en) | 2008-12-18 | 2014-06-10 | Manufacturing Resources International, Inc. | System for cooling an electronic image assembly with manifolds and ambient gas |
US10827656B2 (en) | 2008-12-18 | 2020-11-03 | Manufacturing Resources International, Inc. | System for cooling an electronic image assembly with circulating gas and ambient gas |
CN101846475B (en) * | 2009-03-25 | 2013-12-11 | 三花控股集团有限公司 | Fin for heat exchanger and heat exchanger with same |
CN101526324B (en) * | 2009-04-13 | 2010-07-28 | 三花丹佛斯(杭州)微通道换热器有限公司 | Fin, heat exchanger with fin and heat exchanger device |
DE102009021179A1 (en) * | 2009-05-13 | 2010-11-18 | Behr Gmbh & Co. Kg | Rib for a heat exchanger |
CN101619950B (en) * | 2009-08-13 | 2011-05-04 | 三花丹佛斯(杭州)微通道换热器有限公司 | Fin and heat exchanger with same |
US20110048688A1 (en) * | 2009-09-02 | 2011-03-03 | Delphi Technologies, Inc. | Heat Exchanger Assembly |
CN101846465B (en) * | 2010-04-13 | 2011-11-09 | 三花丹佛斯(杭州)微通道换热器有限公司 | Heat exchanger |
CN101865574B (en) | 2010-06-21 | 2013-01-30 | 三花控股集团有限公司 | Heat exchanger |
CN101865625B (en) * | 2010-06-29 | 2012-09-05 | 三花丹佛斯(杭州)微通道换热器有限公司 | Fin and heat exchanger provided with same |
JP2012026407A (en) * | 2010-07-27 | 2012-02-09 | Denso Corp | Intercooler |
CN101936672B (en) * | 2010-09-15 | 2012-09-19 | 三花控股集团有限公司 | Heat exchanger with improved surface airflow field distribution uniformity |
CN102252558B (en) | 2011-05-06 | 2013-04-10 | 三花控股集团有限公司 | Heat exchange device |
US10660245B2 (en) | 2012-10-16 | 2020-05-19 | Manufacturing Resources International, Inc. | Back pan cooling assembly for electronic display |
US9648790B2 (en) | 2013-03-15 | 2017-05-09 | Manufacturing Resources International, Inc. | Heat exchanger assembly for an electronic display |
US10524384B2 (en) | 2013-03-15 | 2019-12-31 | Manufacturing Resources International, Inc. | Cooling assembly for an electronic display |
US9470924B2 (en) | 2013-07-08 | 2016-10-18 | Manufacturing Resources International, Inc. | Figure eight closed loop cooling system for electronic display |
ES2876252T3 (en) | 2014-03-11 | 2021-11-12 | Mri Inc | Procedure for mounting a display on a wall |
US10194564B2 (en) | 2014-04-30 | 2019-01-29 | Manufacturing Resources International, Inc. | Back to back electronic display assembly |
US9723765B2 (en) | 2015-02-17 | 2017-08-01 | Manufacturing Resources International, Inc. | Perimeter ventilation system for electronic display |
WO2017059959A1 (en) * | 2015-10-08 | 2017-04-13 | Linde Aktiengesellschaft | Fin for a plate heat exchanger and method for producing same |
CN108700739A (en) | 2016-03-04 | 2018-10-23 | 制造资源国际公司 | A kind of cooling system for bilateral display module |
DE102016213197A1 (en) | 2016-07-19 | 2018-01-25 | Mahle International Gmbh | Corrugated rib of a heat exchanger and heat exchanger |
EP3616481A4 (en) | 2017-04-27 | 2020-12-23 | Manufacturing Resources International, Inc. | System and method for preventing display bowing |
US10485113B2 (en) | 2017-04-27 | 2019-11-19 | Manufacturing Resources International, Inc. | Field serviceable and replaceable display |
US10559965B2 (en) | 2017-09-21 | 2020-02-11 | Manufacturing Resources International, Inc. | Display assembly having multiple charging ports |
US10602626B2 (en) | 2018-07-30 | 2020-03-24 | Manufacturing Resources International, Inc. | Housing assembly for an integrated display unit |
US11096317B2 (en) | 2019-02-26 | 2021-08-17 | Manufacturing Resources International, Inc. | Display assembly with loopback cooling |
US10795413B1 (en) | 2019-04-03 | 2020-10-06 | Manufacturing Resources International, Inc. | Electronic display assembly with a channel for ambient air in an access panel |
US11477923B2 (en) | 2020-10-02 | 2022-10-18 | Manufacturing Resources International, Inc. | Field customizable airflow system for a communications box |
US11470749B2 (en) | 2020-10-23 | 2022-10-11 | Manufacturing Resources International, Inc. | Forced air cooling for display assemblies using centrifugal fans |
US11778757B2 (en) | 2020-10-23 | 2023-10-03 | Manufacturing Resources International, Inc. | Display assemblies incorporating electric vehicle charging equipment |
US11966263B2 (en) | 2021-07-28 | 2024-04-23 | Manufacturing Resources International, Inc. | Display assemblies for providing compressive forces at electronic display layers |
US11762231B2 (en) | 2021-08-23 | 2023-09-19 | Manufacturing Resources International, Inc. | Display assemblies inducing turbulent flow |
US11919393B2 (en) | 2021-08-23 | 2024-03-05 | Manufacturing Resources International, Inc. | Display assemblies inducing relatively turbulent flow and integrating electric vehicle charging equipment |
US11744054B2 (en) | 2021-08-23 | 2023-08-29 | Manufacturing Resources International, Inc. | Fan unit for providing improved airflow within display assemblies |
US11968813B2 (en) | 2021-11-23 | 2024-04-23 | Manufacturing Resources International, Inc. | Display assembly with divided interior space |
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-
2002
- 2002-07-31 DE DE10235038A patent/DE10235038A1/en not_active Withdrawn
-
2003
- 2003-07-25 CN CNB038182416A patent/CN100373121C/en not_active Expired - Fee Related
- 2003-07-25 EP EP03766307.7A patent/EP1527311B1/en not_active Expired - Lifetime
- 2003-07-25 US US10/522,920 patent/US7882708B2/en active Active
- 2003-07-25 WO PCT/EP2003/008251 patent/WO2004013559A1/en active Application Filing
- 2003-07-25 JP JP2004525328A patent/JP2005534888A/en active Pending
- 2003-07-25 AU AU2003255295A patent/AU2003255295A1/en not_active Abandoned
- 2003-07-25 BR BR0305705-4A patent/BR0305705A/en not_active IP Right Cessation
-
2004
- 2004-11-26 ZA ZA200409593A patent/ZA200409593B/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2004013559A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1527311B1 (en) | 2016-05-04 |
CN100373121C (en) | 2008-03-05 |
CN1672006A (en) | 2005-09-21 |
BR0305705A (en) | 2004-10-19 |
US7882708B2 (en) | 2011-02-08 |
JP2005534888A (en) | 2005-11-17 |
ZA200409593B (en) | 2005-09-08 |
US20050229630A1 (en) | 2005-10-20 |
WO2004013559A1 (en) | 2004-02-12 |
DE10235038A1 (en) | 2004-02-12 |
AU2003255295A1 (en) | 2004-02-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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