US2870998A - Heat exchanger walls with coupled sinuous fin elements - Google Patents
Heat exchanger walls with coupled sinuous fin elements Download PDFInfo
- Publication number
- US2870998A US2870998A US429909A US42990954A US2870998A US 2870998 A US2870998 A US 2870998A US 429909 A US429909 A US 429909A US 42990954 A US42990954 A US 42990954A US 2870998 A US2870998 A US 2870998A
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- Prior art keywords
- heat exchanger
- walls
- coupled
- fluid
- envelope
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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
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/022—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being wires or pins
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49373—Tube joint and tube plate structure
Definitions
- the present invention relates to an apparatus for the exchange of heat between two confined fluids and particularly it relates to an improved form of extended surface for application to a heat exchanger of the plate type.
- a familiar type of heat exchanger for two confined fluids comprises metallic plates spaced apart to form a fluid passage through which one fluid is circulated for transferring heat through the passage wall formed by one of the metallic plates to another fluid in an adjacent passage, the passages for the heating fluid and the fluid to be heated being arranged in alternation.
- the spaces between the adjacent plates forming the fluid passageways are closed along one pair of opposite edges to provide an enclosed passageway having an inlet at one end and an oppositely disposed outlet.
- the plate and wire elements comprising such a plate type heat exchanger are bonded together by brazing, a process providing a reasonably strong bond entirely satisfactory for heat exchange units adapted to handle fluids at relatively low temperature and pressure.
- Such brazed units are not however, suitable for use at high temperature or pressure since the inherent strength of a brazed joint is not adequate for such usage.
- Figure l is a fragmentary side elevation, partially in section, of a heat exchanger envelope involving the invention of this application.
- Figure 2 is an end elevation of the heat exchanger illustrated in Figure 1.
- FIG. 3 illustrates a modified form of the invention.
- FIG 4 is a perspective view of the heat exchanger envelope illustrated in Figures 1 and 2.
- Figure lthe numerals 2 and 2A designate a pair of metallic plates spaced apart to form a passage through which air or other fluid to be heated is circulated in heat transfer relationship with another fluid flowing past the outer surfaces of said plates in other passages at provide parallel flow lanes 8 through which the fluid may flow when the .unit is completely assembled and placed in operation.
- a first plate 2A with its parallel rows of undulated wires is placed wire side up on a relatively flat surface while a similar plate 2 having its undulated wire side down is superimposed over said first named plate and lowered until wire loops remote from the plate connected thereto lie adjacent to the inner face of the spaced plate.
- Retaining rods 4 having an overall length substantially equal to the length of an envelope are then inserted into the spaces formed between overlapping series. of loops 6 and 7 to link the spaced plates and their undulated wires together.
- Figure 2 discloses a preferable form of the invention wherein the undulated wire strips Welded to opposing faces of the spaced walls 2 and 2A are held in a side by side contacting relationship as contrasted with the assembly of the alternative arrangement disclosed in Figure 3.
- the parallel strips of undulated wires attached to one passage wall are spaced intermediate those of the opposing wall.
- An envelope for a plate type heat exchanger comprising a pair of metallic plates spaced apart to form opposing walls for a fluid passageway therebetween; parallel rows of undulated wires depending from each inner wall and extending toward the opposing wall thereof so the loops remote from their respective walls overlap; and metallic rods inserted through aligned spaces between overlapping loops to link the passage walls and their respective strips of undulated wires into a composite body.
- An envelope for a plate type heat exchanger as defined in claim 1 having means closing the spaces between said plates along a pair of opposite marginal edges spaced apart to provide walls for a fluid passageway therehetween, a plurality of sinuous Wires secured to each wall and adapted to extend perpendicularly between metallic plates to provide parallel rows of heat exchange elements having alternate rows secured to opposing passage walls;-and linking means extending through the spaces formed between overlapping loops of oppositely extending sinuous Wires to link the wires and their attached plates together into an integral body.
Description
Jan. 27, 1959 1-. L. WOOLARD 2,870,998
HEAT EXCHANGER WALLS WITH COUPLED SINUOUS FIN ELEMENTS Filed May 14 1954 ATI'O EY 2,870,998 Patented Jan. 27, 1959 HEAT EXCHANGER WALLS WITH COUPLED SINUOUS .FIN ELEMENTS Thomas L. Woolard, Wellsville,-N. Y., assignor to The Air Preheater Corporation, New York, N. Y., a corporation of New York Application May 14,1954, Serial No. 429,909
3 Claims. (Cl. 257-245) The present invention relates to an apparatus for the exchange of heat between two confined fluids and particularly it relates to an improved form of extended surface for application to a heat exchanger of the plate type.
A familiar type of heat exchanger for two confined fluids comprises metallic plates spaced apart to form a fluid passage through which one fluid is circulated for transferring heat through the passage wall formed by one of the metallic plates to another fluid in an adjacent passage, the passages for the heating fluid and the fluid to be heated being arranged in alternation. The spaces between the adjacent plates forming the fluid passageways are closed along one pair of opposite edges to provide an enclosed passageway having an inlet at one end and an oppositely disposed outlet.
To increase the efliciency of heat transfer between the two fluids through the passage walls the latter are frequently provided with extended surface which may be in the form of undulated wires which are joined to the opposite sides of passage walls.
Usually the plate and wire elements comprising such a plate type heat exchanger are bonded together by brazing, a process providing a reasonably strong bond entirely satisfactory for heat exchange units adapted to handle fluids at relatively low temperature and pressure. Such brazed units are not however, suitable for use at high temperature or pressure since the inherent strength of a brazed joint is not adequate for such usage.
Welded. construction of a plate type heat exchanger would provide the necessary strength, however the manufacturing of such a welded unit would provided problems whose solutions would be both complicated and expensive.
It is therefore an object of this invention to provide a plate type heat exchanger which is readily adapted to fabrication by standard operations of welding.
The invention will be best understood upon reference to the following description of an illustrative embodiment thereof when read in conjunction with the accompanying drawing in which:
Figure l is a fragmentary side elevation, partially in section, of a heat exchanger envelope involving the invention of this application.
Figure 2 is an end elevation of the heat exchanger illustrated in Figure 1.
Figure 3 illustrates a modified form of the invention.
Figure 4 is a perspective view of the heat exchanger envelope illustrated in Figures 1 and 2.
In Figure lthe numerals 2 and 2A designate a pair of metallic plates spaced apart to form a passage through which air or other fluid to be heated is circulated in heat transfer relationship with another fluid flowing past the outer surfaces of said plates in other passages at provide parallel flow lanes 8 through which the fluid may flow when the .unit is completely assembled and placed in operation.
in assembling an envelope, a first plate 2A with its parallel rows of undulated wires is placed wire side up on a relatively flat surface while a similar plate 2 having its undulated wire side down is superimposed over said first named plate and lowered until wire loops remote from the plate connected thereto lie adjacent to the inner face of the spaced plate. Retaining rods 4 having an overall length substantially equal to the length of an envelope are then inserted into the spaces formed between overlapping series. of loops 6 and 7 to link the spaced plates and their undulated wires together.
The plates 2 and 2A are then moved apart until the loops 6 and 7 tightly embrace the retaining rods 4 which have previously been inserted between loops in the manner heretofore disclosed. After the plates 2 and 2A have 'been separated to the limits allowable by the interconnected loops 3, channel members 14 of appropriate height h are inserted between the opposite side edges of a pair of plates and bonded thereto by a continuous seam weld at flanges 16 and 18. Enclosure of opposite sides by welded channel members 14 completes the envelope assembly and provides it with a completely Welded construction having an inherent strength at high temperatures far greater than that of a similar envelope having a standard brazed construction.
After the envelopes have been completely assembled and welded, a plurality of said units are superimposed and spaces between envelopes are enclosed on a pair of opposite sides by channels similar to channels 14 to thereby provide a passageway for a second fluid to flow in a heat exchange relationship with the fluid which flows through the passageway lil. However, such assembly of envelope units into a composite body to provide a completed heat exchanger is of no major part of this invention and its disclosure is ancillary to the assembly of an individual envelope.
Figure 2 discloses a preferable form of the invention wherein the undulated wire strips Welded to opposing faces of the spaced walls 2 and 2A are held in a side by side contacting relationship as contrasted with the assembly of the alternative arrangement disclosed in Figure 3. In this alternative arrangement the parallel strips of undulated wires attached to one passage wall are spaced intermediate those of the opposing wall.
in use a fluid maintained at relatively high pressure is channeled through the passageway it! inside each of the envelopes while a second fluid at a much lower pressure is passed through passageways 11 adjacent the outer envelope walls. This pressure differential between the fluids inside and outside each envelope is sufficient to force the passage walls outward bringing all of the loops 6 and 7 into abutment with the retaining rods 4 so as to provide means linking the opposing walls and their depending undulated wires into an integral. envelope.
What I claim is: j
1. An envelope for a plate type heat exchanger comprising a pair of metallic plates spaced apart to form opposing walls for a fluid passageway therebetween; parallel rows of undulated wires depending from each inner wall and extending toward the opposing wall thereof so the loops remote from their respective walls overlap; and metallic rods inserted through aligned spaces between overlapping loops to link the passage walls and their respective strips of undulated wires into a composite body.
2. An envelope for a plate type heat exchanger as defined in claim 1 having means closing the spaces between said plates along a pair of opposite marginal edges spaced apart to provide walls for a fluid passageway therehetween, a plurality of sinuous Wires secured to each wall and adapted to extend perpendicularly between metallic plates to provide parallel rows of heat exchange elements having alternate rows secured to opposing passage walls;-and linking means extending through the spaces formed between overlapping loops of oppositely extending sinuous Wires to link the wires and their attached plates together into an integral body.
References Cited in the file of this patent UNITED STATES PATENTS 625,642 Clarkson May 23, 1899 43. Smith Mar. 10, Norris June 8, Von Linde I an. 6, Trumpler Mar. 14, Chausson Nov. 27, Rogers et al. Apr. 8, Holm et a1. May 6, Jensen Dec. 21, Sholl Apr. 3, Rippingille Feb. 19,
FOREIGN PATENTS Switzerland Aug. 2, France Sept. 16,
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US429909A US2870998A (en) | 1954-05-14 | 1954-05-14 | Heat exchanger walls with coupled sinuous fin elements |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US429909A US2870998A (en) | 1954-05-14 | 1954-05-14 | Heat exchanger walls with coupled sinuous fin elements |
Publications (1)
Publication Number | Publication Date |
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US2870998A true US2870998A (en) | 1959-01-27 |
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Application Number | Title | Priority Date | Filing Date |
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US429909A Expired - Lifetime US2870998A (en) | 1954-05-14 | 1954-05-14 | Heat exchanger walls with coupled sinuous fin elements |
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US (1) | US2870998A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3159210A (en) * | 1960-04-16 | 1964-12-01 | Scholl Gunter | Heat-exchanging band |
US3528496A (en) * | 1967-11-03 | 1970-09-15 | Union Carbide Corp | Plate-fin heat exchanger |
EP0530721A1 (en) * | 1991-09-06 | 1993-03-10 | Ruhrgas Aktiengesellschaft | Device to increase the heat-transfer between a wall and a heat-exchanger fluid |
US5224539A (en) * | 1991-06-14 | 1993-07-06 | Coen Company, Inc. | Cooling system for air heaters and the like |
US20120261104A1 (en) * | 2011-04-12 | 2012-10-18 | Altex Technologies Corporation | Microchannel Heat Exchangers and Reactors |
WO2012141793A1 (en) * | 2011-04-13 | 2012-10-18 | Altex Technologies Corporation | Non-isotropic structures for heat exchangers and reactors |
DE102012203622A1 (en) * | 2012-03-07 | 2013-09-12 | Behr Gmbh & Co. Kg | Heat exchanger for use in motor car, has surface enlargement element comprising wire matrix formed from wire pieces, which are notched from wire matrix such that wire pieces protrude in predetermined angle from surface/plane of wire matrix |
US20160363389A1 (en) * | 2015-05-22 | 2016-12-15 | The Johns Hopkins University | Three dimensional woven lattices as multi-functional heat exchanger |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH2481A (en) * | 1890-08-02 | 1891-03-14 | H Studer | Metal spiral jacket that conducts heat and cold |
US625642A (en) * | 1899-05-23 | Thomas clarkson | ||
FR790919A (en) * | 1934-06-06 | 1935-11-29 | New radiant body system | |
US2033402A (en) * | 1933-03-27 | 1936-03-10 | Smith Arthur Leroy | Heat exchanger |
US2082899A (en) * | 1935-11-13 | 1937-06-08 | William A Norris | Radiator |
US2268680A (en) * | 1938-06-08 | 1942-01-06 | Linde Robert Von | Heat exchanger with wire heat conductors |
US2500501A (en) * | 1946-09-12 | 1950-03-14 | Kellogg M W Co | Method of making heat exchangers |
US2576213A (en) * | 1943-07-29 | 1951-11-27 | Chausson Usines Sa | Heat exchanger |
US2591878A (en) * | 1948-09-22 | 1952-04-08 | Gen Motors Corp | Oxygen regenerator |
US2595457A (en) * | 1947-06-03 | 1952-05-06 | Air Preheater | Pin fin heat exchanger |
US2697588A (en) * | 1950-08-04 | 1954-12-21 | Air Preheater | Interlocking finned heat exchange envelope |
US2740615A (en) * | 1949-11-12 | 1956-04-03 | Scholl Gunter | Regenerator masses for regenerative heat exchangers |
US2782009A (en) * | 1952-03-14 | 1957-02-19 | Gen Motors Corp | Heat exchangers |
-
1954
- 1954-05-14 US US429909A patent/US2870998A/en not_active Expired - Lifetime
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US625642A (en) * | 1899-05-23 | Thomas clarkson | ||
CH2481A (en) * | 1890-08-02 | 1891-03-14 | H Studer | Metal spiral jacket that conducts heat and cold |
US2033402A (en) * | 1933-03-27 | 1936-03-10 | Smith Arthur Leroy | Heat exchanger |
FR790919A (en) * | 1934-06-06 | 1935-11-29 | New radiant body system | |
US2082899A (en) * | 1935-11-13 | 1937-06-08 | William A Norris | Radiator |
US2268680A (en) * | 1938-06-08 | 1942-01-06 | Linde Robert Von | Heat exchanger with wire heat conductors |
US2576213A (en) * | 1943-07-29 | 1951-11-27 | Chausson Usines Sa | Heat exchanger |
US2500501A (en) * | 1946-09-12 | 1950-03-14 | Kellogg M W Co | Method of making heat exchangers |
US2595457A (en) * | 1947-06-03 | 1952-05-06 | Air Preheater | Pin fin heat exchanger |
US2591878A (en) * | 1948-09-22 | 1952-04-08 | Gen Motors Corp | Oxygen regenerator |
US2740615A (en) * | 1949-11-12 | 1956-04-03 | Scholl Gunter | Regenerator masses for regenerative heat exchangers |
US2697588A (en) * | 1950-08-04 | 1954-12-21 | Air Preheater | Interlocking finned heat exchange envelope |
US2782009A (en) * | 1952-03-14 | 1957-02-19 | Gen Motors Corp | Heat exchangers |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3159210A (en) * | 1960-04-16 | 1964-12-01 | Scholl Gunter | Heat-exchanging band |
US3528496A (en) * | 1967-11-03 | 1970-09-15 | Union Carbide Corp | Plate-fin heat exchanger |
US5224539A (en) * | 1991-06-14 | 1993-07-06 | Coen Company, Inc. | Cooling system for air heaters and the like |
EP0530721A1 (en) * | 1991-09-06 | 1993-03-10 | Ruhrgas Aktiengesellschaft | Device to increase the heat-transfer between a wall and a heat-exchanger fluid |
US20120261104A1 (en) * | 2011-04-12 | 2012-10-18 | Altex Technologies Corporation | Microchannel Heat Exchangers and Reactors |
WO2012141793A1 (en) * | 2011-04-13 | 2012-10-18 | Altex Technologies Corporation | Non-isotropic structures for heat exchangers and reactors |
US10119771B2 (en) | 2011-04-13 | 2018-11-06 | Altex Technologies Corporation | Non-isotropic structures for heat exchangers and reactors |
DE102012203622A1 (en) * | 2012-03-07 | 2013-09-12 | Behr Gmbh & Co. Kg | Heat exchanger for use in motor car, has surface enlargement element comprising wire matrix formed from wire pieces, which are notched from wire matrix such that wire pieces protrude in predetermined angle from surface/plane of wire matrix |
US20160363389A1 (en) * | 2015-05-22 | 2016-12-15 | The Johns Hopkins University | Three dimensional woven lattices as multi-functional heat exchanger |
US10982913B2 (en) * | 2015-05-22 | 2021-04-20 | The Johns Hopkins University | Three dimensional woven lattices as multi-functional heat exchanger |
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