US3645330A - Fin for a reversible heat exchanger - Google Patents
Fin for a reversible heat exchanger Download PDFInfo
- Publication number
- US3645330A US3645330A US8912A US3645330DA US3645330A US 3645330 A US3645330 A US 3645330A US 8912 A US8912 A US 8912A US 3645330D A US3645330D A US 3645330DA US 3645330 A US3645330 A US 3645330A
- Authority
- US
- United States
- Prior art keywords
- heat exchanger
- air
- fins
- corrugations
- edge angle
- 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.)
- Expired - Lifetime
Links
- 230000002441 reversible effect Effects 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 238000000926 separation method Methods 0.000 claims description 10
- 230000001154 acute effect Effects 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
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
- F28F1/24—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 and extending transversely
- F28F1/32—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 and extending transversely the means having portions engaging further tubular elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S165/00—Heat exchange
- Y10S165/355—Heat exchange having separate flow passage for two distinct fluids
- Y10S165/442—Conduits
- Y10S165/443—Adjacent conduits with transverse air passages, e.g. radiator core type
- Y10S165/444—Adjacent conduits with transverse air passages, e.g. radiator core type including transversely stacked fin sheets
Definitions
- ABSTRACT A sheet of material defining a pair of parallel opposed edges adapted to be positioned generally transverse to the direction of airflow through the exchanger, said sheet of material having a plurality of corrugations therein extending parallel to the edges and a plurality of openings therethrough for receiving fluid conduits therein, and a portion of said sheet of material adjacent said opposed edges extending at an angle, relative to a plane including the sheet of material, greater than zero and less than 45, such that for any given set of conditions for the heat exchanger (including rate of airflow, number of fins per inch, etc.) the exchanger is reversible in the airflow, without inflicting a loss in the heat transfer or an increase in the pressure differential across the exchanger, and the air deflection at the outlet of the exchanger is approximately zero in either direction.
- the present invention applies specifically to the type of heat exchanger including a plurality of generally parallel fluid conduits connected to conduct a fluid medium, such as water or the like, and engaged through a plurality of generally parallel, spaced apart fins extending perpendicular to the conduits and especially to fins having severe undulations or waves therein.
- the fins and conduit are mounted in a tubular housing so that air or the like, upon being forced through the housing, contacts the fins and the conduits and exchanges heat, by giving up heat thereto or accepting heat therefrom.
- Such heat exchangers and housings are typically utilized in air conditioning units, industrial process equipment, etc.
- fins of heat exchangers which are constructed so that air is free to flow in a straight line therebetween, are extremely inefficient and provide a relatively low heat transfer. Because of this straight line flow, air immediately adjacent a fin, called a boundary layer, flows somewhat slower than air between the boundary layers due to resistance at the surface of the fins to air flow thereacross. This flowing of air through the exchanger in layers is known as laminar flow and reduces the heat transfer substantially.
- Modine describes a turned-over leading edge to provide strength and a pleasing appearance. This turned-over leading edge will greatly reduce the airflow through the heat exchanger as larger numbers of fins per inch are utilized. Further, if the heat exchanger is reversed the turned-over edge will produce a relatively large pressure differential across the heat exchanger as larger numbers of fins per inch are utilized. Thus, Modines device is not reversible and causes an amount of air deflection at the outlet which is intolerable where heat exchangers are utilized in tubular housings, as in the presently described field.
- the present invention pertains to fin construction for a reversible heat exchanger wherein the fin includes a piece of sheet material defining a pair of opposed edges extending generally transverse to the direction of airflow through the exchanger with a plurality of corrugations formed between the edges and a plurality of corrugations formed between the edges and a plurality of apertures through the material for receiving fluid conduits therethrough and said piece of material further defining longitudinally extended edge angle portions adjacent each of said opposed edges anddisposed at an acute angle greater than zero degrees and less than 45 relative to a plane extending tangent to an adjacent corrugation and other like formed corrugations, said edge angle portions cooperating with edge angle portions of adjacent fins to provide an optimum amount of air deflection at the outlet and an optimum amount of differential pressure across the exchanger regardless of the direction of air flow through the heat exchanger.
- FIG. 1 is a view in transverse section of an air duct showing an end elevation of a heat exchanger having the improved fins therein, portions thereof removed;
- FIG. 2 is a sectional view as seen from the line 2-2 of FIG. 1, portions thereof removed;
- FIG. 3 is an enlarged fragmentary sectional view as seen from the line 33 in FIG. 1;
- FIG. 4 is an enlarged sectional view as seen from the line 4-4 in FIG. 2;
- FIG. 5 is an enlarged view in transverse section of a sheet of material, prior to separation into a pair of improved fins
- FIGS. 6 and 7 are somewhat schematic views in transverse side elevation of prior art heat exchangers
- FIG. 8 is a semischematic view in transverse side elevation of the present heat exchanger including the improved fins.
- FIG. 9 is an approximate graphic representation of the outlet air deflection angle relative to the number of fins per inch in a heat exchanger utilizing the improved fins, with two different airflow rates specified.
- the numeral 10 generally designates a heat exchanger including a generally rectangularly shaped casing 11 having sidewalls l2 and 13 and upper and lower walls 14 and 15, respectively.
- a plurality of generally U-shaped conduits or tubes 16 are engaged through the sidewall 12, with the bight remaining on the exterior of the sidewall 12.
- the tubes 16 extend across the casing 11 in transversely spaced apart relationship and are engaged through the sidewall 13 with the two open ends of each of the tubes 16 extending a short distance to the exterior of the sidewall 13.
- a corresponding first open end of each of the tubes 16 is sealingly engaged in communication with a first header 17 mounted parallel with and exterior of the sidewall 13.
- each of the tubes 16 are sealingly engaged in communication with a second header 18 extending parallel with and exterior of the sidewall 13.
- the headers 17 and 18 have ports 19 and 20, respectively, for the ingress and egress of water or other heat-transferring fluid through the system.
- the casing 11 is designed to be fitted into and form part of a tubular housing, such as air ducts 25 (illustrated in FIG. 2), although exchanges not associated with ducts are also included in this disclosure.
- the tubular housing or air ducts 25 direct air through the casing 11 and over the tubes 16 from one end 26 to the other end 27 of the casing 11.
- the normal airflow through the casing 11 from end 26 to end 27 is illustrated in FIG. 2 by the solid arrows.
- the direction of airflow withv respect to the heat exchanger 10 may be reversed so that the air flows from the end 27 to the end 26, as illustrated by the dotted arrows in FIG. 2, or the heat exchanger 10 may be installed in the air ducts 25 in a reverse direction. In either case the flow of air through the heat exchanger 10 is reversed.
- a plurality of cooling or heating fins 30 are positioned in parallel spaced apart relationship between the sidewalls 12 and 13 of the casing 11 and in engagement with the tubes 16.
- Each of the fins 30 is formed from a piece of sheet material having good heat conducting characteristics, and the desired strength, durability, weight, ete., such as aluminum or the like.
- Each of the fins 30 is formed in a generally rectangular shape with opposed longitudinally extending edges 31 and 32 and two rows of longitudinally spaced apart openings 33 extending generally parallel with the edges 31 and 32 and spaced therebetween. The openings 33 in one of the rows are staggered or misaligned with the openings in the adjacent row for reasons which will become apparent presently.
- Each of the openings 33 has a generally cylindrical collar 34 extending outwardly from a side of the fin 30 generally coaxial with the associated opening 33.
- the outermost edge of the collar 34 is flanged outwardly at 35 to aid in assembly of the heat exchanger 10.
- the tubes 16 are inserted through the openings 33 and a plurality of fins 30 are equally spaced thereon.
- the tubes 16 are then radially expanded by internal pressure or the like to firmly, frictionally engage the fins 30 and prevent relative movement thereof.
- a plurality of longitudinally extending corrugations are formed between the edges 31 and 32 in each of the fins 30.
- the corrugations are formed in a continuous sequence in a sheet of material and a piece of the material is removed along a specific line to form a fin 30.
- FIG. 5 which is a cross-sectional or end view of a sheet of material including two of the present fins 30, the sequence of corrugations can be seen.
- the sequence includes two corrugations 40 and 41, each having a generally sinusoidally shaped cross section or each including a rounded valley and hill.
- a somewhat wider high area or hill 42 is formed and at the opposite end of the two corrugations 40 and 41 a somewhat wider low area or valley 43 is formed.
- the high area 42 has a small dip 44 at the center thereof to provide a double peak 45 and 46 configuration and the low area 43 has a small peak 47 at the center thereof to provide a double dip 48 and 49 arrangement.
- a piece is removed by cutting the sheet along the dips 44 of the high areas 42 and/or the peaks 47 of the low areas 43. As illustrated in FIG. 5, a row of openings 33 is positioned between adjacent high areas 42 and low areas 43. Thus, if a heat exchanger is to be constructed with a single row of openings 33, the pieces of material are severed from the sheet of material along each high area 42 and adjacent low area 43. In the present embodiment two rows of openings 33 are provided in each of the fins 30 so that the sheet of material is severed along the dips 44 in each of the high areas 42.
- the low portion of the dip 44 in the high area 42 and the high portion of the peak 47 in the low area 43 are separation portions or portions along which the sheet of material can be separated into fins 30.
- the angularly disposed portions forming the sides of the dip 44 and/or the peak 47 form edge angle portions 50 and 51, respectively.
- the fins 30 are cut so that an edge angle portion 50 is adjacent each of the edges 31 and 32.
- the dip 44 in the high area 42 and the peak 47 in the low area 43 are formed so that the edge angle portions 50 and 51 form an angle of approximately 17 with reference to a plane tangent to the peaks of the corrugations and to the dips of the corrugations, respectively. It has been found that an angle of between and for the edge angle portions 50 or 51 is optimum when nine or tens fins per inch are utilized with an air flow velocity of between 400 and 1,000 feet per minute.
- a graph illustrates the variations in deflection angle of the outlet air from the heat exchanger 10 (ordinate) for variations in the number of fins per inch (abscissa) and for variations of air velocity.
- the air flowing through the heat exchanger 10 has a tendency to follow the corrugations, for less than six fins per inch and, consequently, the air is deflected substantially in a first direction or the direction of the last corrugation. This corresponds somewhat to the prior art type of fins which simply stopped at the end of a corrugation, as shown in FIG. 6.
- FIG. 9 illustrates the variations in deflection angle of the outlet air from the heat exchanger 10 (ordinate) for variations in the number of fins per inch (abscissa) and for variations of air velocity.
- the outlet and inlet edges are directed at an angle of approximately 45 to the plane of the fins and the deflection angle of the outlet air is so large as to be objectionable. This amount of deflection is intolerable in most heat exchangers utilized in the present field because it tends to create distortions in air distribution in the tubular housing or air ducts 25 rather than a uniform flow. Because of the large number of variables in the heat exchanger 10 and the system in which it is utilized, the actual angle of the edge angle portion 50 or 51 may vary between an angle greater than 0 and less than 45. As previously stated and illustrated in FIG.
- an outlet air deflection angle of approximately zero can be obtained with an air velocity of 400 to 1,000 feet per minute by installing between eight and ten fins per inch.
- the angle of the edge angle portions 50 or 51 can be altered to return the outlet air deflection angle to approximately zero or the desired angle.
- FIG. 7 illustrates a semischematic view of a heat exchanger 10 incorporating the improved fins 30.
- a broken line 52 represents a plane extending tangent to the adjacent portion 45 or 46 and other like formed portions of corrugations 40 and 41.
- a dotted arrow 53 indicates generally the first direction of air at the outlet, which first direction is represented in the graph of FIG. 9 as negative.
- a second dotted arrow 54 indicates generally the second direction of air at the outlet, which second direction is represented in the graph of FIG. 9 as positive.
- the angle of the edge angle portions 50 or 51 should be adjusted so that the optimum desired outlet air deflection angle and differential pressure are obtained. While the angle of the edge angle portion 50 adjacent the edge 31 of the fin 30 may vary somewhat from the angle of the edge angle portion 50 adjacent the edge 32, in general these angles will be substantially equal since the various characteristics of the system in which the heat exchanger 10 is mounted remain equal. Further, to simplify manufacturing of the fins 30 the angles of the edge angle portions 50 adjacent each of the edges 31 and 32 should be substantially equal.
- the heat exchanger 10 is reversible within the air ducts 25 or the flow of air therethrough can be reversed.
- the edges 31 and 32 can be rippled to give added strength thereto, with little or no effect on the overall operation of the edge angle portions 50 or 51.
- the ripple is constructed so that the average angle of the edge portions 50 or 51 is the desired angle.
- an improved cooling fin for heat exchangers which is constructed so that the heat exchanger is reversible. Further, other characteristics of the heat exchanger, such as heat transfer, the pressure differential thereacross, etc., have optimum values while providing a desired or optimum outlet air deflection angle along with the reversibility. While a preferred embodiment has been described and illustrated, it should be understood that many variations, such s the type of corrugations, the direction of the angle of the edge angle portions, the spacing and positioning of the openings 33, etc., may be operatively incorporated into the structure.
- a. a piece of sheet material defining a pair of generally parallel, opposed substantially identical edges disposed adjacent the opposite ends of the heat exchanger and extending generally transverse to the direction of air flow through the exchanger;
- said piece of material further defining longitudinally extended generally planar edge angle portions adjacent each of said opposed edges and disposed at acute angles greater than 0 and less than 45 relative to a plane extending tangent to an adjacent portion of a corrugation and other like portions of said corrugations;
- edge angle portions cooperating with edge angle portions of adjacent fins to deflect the air entering and leaving the heat exchanger whereby to create air turbulence at said edge angle portions and provide a heat exchanger having a heat transfer rate and a pressure differential between opposite ends thereof of a substantially equal amount regardless of the direction of air flow through the heat exchanger without deflecting air leaving the heat exchanger an excessive amount.
- apertures are formed in said sheet material to provide a plurality of spaced rows of apertures extending longitudinally of said corrugations, said apertures in each row of apertures adapted to frictionally receive one each one of the fluid conduits.
- planar edge angle portions each extend from an adjacent corrugation at an acute angle relative to a plane lying tangent to said adjacent cormgation and other like formed corrugations.
- each aperture is a collar and in which each of said collars terminates in a radially outwardly flared end portion.
- a heat exchanger adapted to be positioned in a tubular housing having a flow of air therethrough, said heat exchanger comprising:
- each of said fins comprising:
- said fin having a plurality of openings formed therein between said opposite side edges and spaced longitudinally of said corrugations to fonn a row of openings adapted to frictionally engage one each one of said plurality of conduits;
- edge angle portions cooperating with adjacent edge angle portions to deflect air passing through said heat exchanger a given angular amount as it leaves said heat exchanger relative to the direction of air flow through said heat exchanger whereby the heat transfer rate and the pressure ditferential between opposite sides of said heat exchanger, regardless of the direction of air flow through said heat exchanger, is approximately equal.
Abstract
Description
Claims (13)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US891270A | 1970-02-05 | 1970-02-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3645330A true US3645330A (en) | 1972-02-29 |
Family
ID=21734426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US8912A Expired - Lifetime US3645330A (en) | 1970-02-05 | 1970-02-05 | Fin for a reversible heat exchanger |
Country Status (1)
Country | Link |
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US (1) | US3645330A (en) |
Cited By (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50112850A (en) * | 1973-10-31 | 1975-09-04 | ||
JPS50122060U (en) * | 1974-03-20 | 1975-10-06 | ||
US4141411A (en) * | 1973-06-14 | 1979-02-27 | Kalnin Igor M | Tubular heat exchanger |
FR2465972A1 (en) * | 1979-09-25 | 1981-03-27 | Berti Pedro | Flooded evaporator for air conditioning system - has honeycomb pattern of tubes with ribs and zigzag plate inducing turbulence |
US4580623A (en) * | 1984-10-02 | 1986-04-08 | Inglis Limited | Heat exchanger |
US4586563A (en) * | 1979-06-20 | 1986-05-06 | Dubrovsky Evgeny V | Tube-and-plate heat exchanger |
US4789027A (en) * | 1985-05-15 | 1988-12-06 | Sulzer Brothers Limited | Ribbed heat exchanger |
US4815531A (en) * | 1986-12-29 | 1989-03-28 | United Technologies Corporation | Heat transfer enhancing device |
US4860822A (en) * | 1987-12-02 | 1989-08-29 | Carrier Corporation | Lanced sine-wave heat exchanger |
US4923002A (en) * | 1986-10-22 | 1990-05-08 | Thermal-Werke, Warme-Kalte-Klimatechnik GmbH | Heat exchanger rib |
US5168923A (en) * | 1991-11-07 | 1992-12-08 | Carrier Corporation | Method of manufacturing a heat exchanger plate fin and fin so manufactured |
US5226285A (en) * | 1989-12-18 | 1993-07-13 | Danhard, Inc. | Self-cleaning heat exchanger fan assembly and controls |
US5927393A (en) * | 1997-12-11 | 1999-07-27 | Heatcraft Inc. | Heat exchanger fin with enhanced corrugations |
US6272876B1 (en) | 2000-03-22 | 2001-08-14 | Zero Zone, Inc. | Display freezer having evaporator unit |
US6536255B2 (en) | 2000-12-07 | 2003-03-25 | Brazeway, Inc. | Multivoid heat exchanger tubing with ultra small voids and method for making the tubing |
US20030131976A1 (en) * | 2002-01-11 | 2003-07-17 | Krause Paul E. | Gravity fed heat exchanger |
US6598295B1 (en) | 2002-03-07 | 2003-07-29 | Brazeway, Inc. | Plate-fin and tube heat exchanger with a dog-bone and serpentine tube insertion method |
US20040251016A1 (en) * | 2003-05-28 | 2004-12-16 | Sai Kee Oh | Heat exchanger |
US20040261984A1 (en) * | 2003-06-25 | 2004-12-30 | Evapco International, Inc. | Fin for heat exchanger coil assembly |
US20050056407A1 (en) * | 2003-09-15 | 2005-03-17 | Oh Sai Kee | Heat exchanger |
US20050189099A1 (en) * | 2004-02-26 | 2005-09-01 | Leonid Hanin | Heat exchange device |
US20050247434A1 (en) * | 2004-04-23 | 2005-11-10 | Foxconn Technology Co., Ltd | Heat dissipating device |
US20060081362A1 (en) * | 2004-10-19 | 2006-04-20 | Homayoun Sanatgar | Finned tubular heat exchanger |
US20060278374A1 (en) * | 2005-06-10 | 2006-12-14 | Ming-Liang Hao | Heat dissipation device |
JP2008128569A (en) * | 2006-11-21 | 2008-06-05 | Mitsubishi Heavy Ind Ltd | Fin and tube type heat exchanger |
US20080142201A1 (en) * | 2006-12-14 | 2008-06-19 | Evapco, Inc. | High-frequency, low-amplitude corrugated fin for heat exchanger coil assembly |
US20080277009A1 (en) * | 2007-05-10 | 2008-11-13 | Fluid-Quip, Inc. | Multiple helical vortex baffle |
US20100071886A1 (en) * | 2007-01-25 | 2010-03-25 | The University Of Tokyo | Heat exchanger |
US20120012292A1 (en) * | 2010-07-16 | 2012-01-19 | Evapco, Inc. | Evaporative heat exchange apparatus with finned elliptical tube coil assembly |
EP1512931B1 (en) * | 2003-09-02 | 2012-03-21 | LG Electronics, Inc. | Heat exchanger |
US20150027678A1 (en) * | 2013-07-23 | 2015-01-29 | Lg Electronics Inc. | Heat exchanger and method and apparatus for manufacturing the same |
US20160047606A1 (en) * | 2013-04-09 | 2016-02-18 | Panasonic Intellectual Property Management Co., Ltd. | Heat transfer fin, heat exchanger, and refrigeration cycle device |
US20160054065A1 (en) * | 2013-04-12 | 2016-02-25 | Panasonic Intellectual Property Management Co., Ltd. | Fin-and-tube heat exchanger and refrigeration cycle device |
EP3104111A4 (en) * | 2014-08-01 | 2017-03-15 | Wang, Liangbi | Streamline wavy fin for finned tube heat exchanger |
EP3231524A1 (en) * | 2016-03-28 | 2017-10-18 | Howatherm Klimatechnik GmbH | Production method for a heat exchanger with lamellae on tubes, and a heat exchanger and lamella |
US10605546B2 (en) * | 2016-11-22 | 2020-03-31 | Tokyo Electric Power Company Holdings, Inc. | Heat exchanger |
US11293701B2 (en) * | 2018-10-18 | 2022-04-05 | Samsung Electronics Co., Ltd. | Heat exchanger and air conditioner having the same |
EP4102169A4 (en) * | 2020-06-24 | 2023-08-02 | Gree Electric Appliances, Inc. of Zhuhai | Fin structure and heat exchanger |
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US2032065A (en) * | 1932-11-16 | 1936-02-25 | Modine Mfg Co | Radiator core |
US3443634A (en) * | 1967-04-06 | 1969-05-13 | Peerless Of America | Heat exchangers |
US3515207A (en) * | 1968-07-17 | 1970-06-02 | Perfex Corp | Fin configuration for fin and tube heat exchanger |
-
1970
- 1970-02-05 US US8912A patent/US3645330A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1920313A (en) * | 1930-11-28 | 1933-08-01 | Manuf Generale Metallurg Sa | Heat exchange apparatus |
US2032065A (en) * | 1932-11-16 | 1936-02-25 | Modine Mfg Co | Radiator core |
US3443634A (en) * | 1967-04-06 | 1969-05-13 | Peerless Of America | Heat exchangers |
US3515207A (en) * | 1968-07-17 | 1970-06-02 | Perfex Corp | Fin configuration for fin and tube heat exchanger |
Cited By (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4141411A (en) * | 1973-06-14 | 1979-02-27 | Kalnin Igor M | Tubular heat exchanger |
JPS50112850A (en) * | 1973-10-31 | 1975-09-04 | ||
JPS50122060U (en) * | 1974-03-20 | 1975-10-06 | ||
US4586563A (en) * | 1979-06-20 | 1986-05-06 | Dubrovsky Evgeny V | Tube-and-plate heat exchanger |
FR2465972A1 (en) * | 1979-09-25 | 1981-03-27 | Berti Pedro | Flooded evaporator for air conditioning system - has honeycomb pattern of tubes with ribs and zigzag plate inducing turbulence |
US4580623A (en) * | 1984-10-02 | 1986-04-08 | Inglis Limited | Heat exchanger |
US4789027A (en) * | 1985-05-15 | 1988-12-06 | Sulzer Brothers Limited | Ribbed heat exchanger |
US4923002A (en) * | 1986-10-22 | 1990-05-08 | Thermal-Werke, Warme-Kalte-Klimatechnik GmbH | Heat exchanger rib |
US4815531A (en) * | 1986-12-29 | 1989-03-28 | United Technologies Corporation | Heat transfer enhancing device |
US4860822A (en) * | 1987-12-02 | 1989-08-29 | Carrier Corporation | Lanced sine-wave heat exchanger |
US5226285A (en) * | 1989-12-18 | 1993-07-13 | Danhard, Inc. | Self-cleaning heat exchanger fan assembly and controls |
US5168923A (en) * | 1991-11-07 | 1992-12-08 | Carrier Corporation | Method of manufacturing a heat exchanger plate fin and fin so manufactured |
US5927393A (en) * | 1997-12-11 | 1999-07-27 | Heatcraft Inc. | Heat exchanger fin with enhanced corrugations |
US6272876B1 (en) | 2000-03-22 | 2001-08-14 | Zero Zone, Inc. | Display freezer having evaporator unit |
US6536255B2 (en) | 2000-12-07 | 2003-03-25 | Brazeway, Inc. | Multivoid heat exchanger tubing with ultra small voids and method for making the tubing |
US20030131976A1 (en) * | 2002-01-11 | 2003-07-17 | Krause Paul E. | Gravity fed heat exchanger |
US6598295B1 (en) | 2002-03-07 | 2003-07-29 | Brazeway, Inc. | Plate-fin and tube heat exchanger with a dog-bone and serpentine tube insertion method |
CN100465568C (en) * | 2003-05-28 | 2009-03-04 | Lg电子株式会社 | Heat exchanger |
US20040251016A1 (en) * | 2003-05-28 | 2004-12-16 | Sai Kee Oh | Heat exchanger |
EP1498681A1 (en) * | 2003-05-28 | 2005-01-19 | LG Electronics Inc. | Heat exchanger |
US7261147B2 (en) * | 2003-05-28 | 2007-08-28 | Lg Electronics Inc. | Heat exchanger |
US20040261984A1 (en) * | 2003-06-25 | 2004-12-30 | Evapco International, Inc. | Fin for heat exchanger coil assembly |
US6889759B2 (en) | 2003-06-25 | 2005-05-10 | Evapco, Inc. | Fin for heat exchanger coil assembly |
EP1512931B1 (en) * | 2003-09-02 | 2012-03-21 | LG Electronics, Inc. | Heat exchanger |
US7219716B2 (en) * | 2003-09-15 | 2007-05-22 | Lg Electronics, Inc. | Heat exchanger |
US20050056407A1 (en) * | 2003-09-15 | 2005-03-17 | Oh Sai Kee | Heat exchanger |
US20050189099A1 (en) * | 2004-02-26 | 2005-09-01 | Leonid Hanin | Heat exchange device |
US7290598B2 (en) | 2004-02-26 | 2007-11-06 | University Of Rochester | Heat exchange device |
US20050247434A1 (en) * | 2004-04-23 | 2005-11-10 | Foxconn Technology Co., Ltd | Heat dissipating device |
US7575045B2 (en) * | 2004-04-23 | 2009-08-18 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Heat dissipating device |
US20060081362A1 (en) * | 2004-10-19 | 2006-04-20 | Homayoun Sanatgar | Finned tubular heat exchanger |
US20060278374A1 (en) * | 2005-06-10 | 2006-12-14 | Ming-Liang Hao | Heat dissipation device |
US7249626B2 (en) * | 2005-06-10 | 2007-07-31 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Heat dissipation device |
JP2008128569A (en) * | 2006-11-21 | 2008-06-05 | Mitsubishi Heavy Ind Ltd | Fin and tube type heat exchanger |
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