US2519820A - Method of making condenser tubes - Google Patents
Method of making condenser tubes Download PDFInfo
- Publication number
- US2519820A US2519820A US639666A US63966646A US2519820A US 2519820 A US2519820 A US 2519820A US 639666 A US639666 A US 639666A US 63966646 A US63966646 A US 63966646A US 2519820 A US2519820 A US 2519820A
- Authority
- US
- United States
- Prior art keywords
- tube
- fin
- section
- length
- groove
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
- B21C37/225—Making finned or ribbed tubes by fixing strip or like material to tubes longitudinally-ribbed tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K25/00—Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components
-
- 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
- Y10T29/49377—Tube with heat transfer means
- Y10T29/49378—Finned tube
-
- 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
- Y10T29/49396—Condenser, evaporator or vaporizer making
-
- 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
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49915—Overedge assembling of seated part
-
- 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
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49925—Inward deformation of aperture or hollow body wall
-
- 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
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49936—Surface interlocking
Definitions
- the principal object of the present invention is to provide a method of making such a tube which is easily carried out at low cost and which produces a. condenser tube of the above type wherein the fin is firmly anchored in place with little or no weakening of the tube structure.
- a further object of the invention is to provide a method of making tubes of this character wherein the fin terminates just short of the tube at both ends so that the ends of the tubes are left round to permit the tube to be expanded in the tube sheet of the condenser in the usual manner.
- FIG. 1 is a longitudinal section showing the grooving operation which'is the first step of my improved method
- Fig. 2 is a sectional view on line 2-4 of Fig.
- Fig. 3 is an enlarged transverse section of the tube wall showing the shapeof the tube in cross section after the grooving operation;
- Fig. 4 is a perspective view partly in section showing the procedure for carrying out the second step in the manufacture of the tube
- Fig. 5 is an enlarged sectional view showing in greater detail the operation of the crimping members
- Fig. 6 is an enlarged cross section of the tube showing in detail the connection formed by the crimping operation
- Figr'l is an inverted plan view of a section of the tube.
- Fig. 8 shows in side elevation an intermediate length of the finished tube.
- I indicates a length of tubing to which the fin is to be attached.
- a section of this tubing 5 of the desired length is mounted on a mandrel 2 which has a longitudinal groove 3 on its upper side extending the full length of the mandrel.
- the mandrel a with the tube section z mounted thereon is moved under a grooving roll 4 which presses into the upper wall of the tube of a longitudinal groove 5 of the cross section indicated in Fig. 3.
- the groove 5 does not run the full length of the tube section. Instead at each end there is an ungrooved portion 6 of the original circular cross section, which is of suflicient length to be expanded in the tube sheet when the condenser is assembled.
- the groove 3 extends longitudinally throughout the length of the mandrel so that the tube I may be readily withdrawn from the mandrel.
- a strip [0 of fin material of the proper length is inserted edgewise in the groove 3 and the tube with the assembled fin is placed between two clamping blocks I I (see Fig. 4) whereby the tube I and the attached section of the fin are held firmly in place.
- the clamping blocks II are coextensive in length with the fin section 10 and throughout the length of the clamping blocks transversely reciprocating plungers I2 are supported at spaced intervals.
- the plungers I2 are placed opposite each other and after the tube is assembled with its finned section in the groove 3 the plungers I2 throughout the length of the blocks II are forced together, thereby crimping the metal of the tube at intervals against the base of the fin, as shown in Fig. 6.
- the blocks H are separated and the finished tube section removed.
- the crimping plungers 12 are preferably arranged opposite to each other and are operated in unison so that each acts to resist the pressure of the other.
- the metal of the tube is forced inwardly and downwardly against the fin, thereby compressing the metal of the fin from opposite sides, as shown in Fig. 6.
- the drip fin may be of uniform width throughout but is preferably serrated along its lower edge as indicated to provide spaced points from which the condensate drips uniformly through the length of the tube.
- the crimping plungers are arranged at spaced intervals corresponding with the full width portions of the fin between the serrations so as to provide flow paths from the tube surface to each section of the fin.
- the groove may be pressed into the tube by means of a die of suitable configuration.
- the crimping of the tube to hold the rib in place may be accomplished by feeding the tube longitudinally through a single pair of intermittently acting crimpers to crimp the rib in place at successive intervals.
- Various other changes in the apparatus for carrying the process into eilect may obviously be made.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
A g- 1950 E. BRUEGGER 2,519,320
vIIE'Il-iOD OF MAKING CONDENSER TUBES Filed Jan. '7, 1946 2 Sheets-Shoot 1 INVENTOR ERNEST HEM-665*? ATTORNEYS 2, 1950 E. BRUEGGER 2,519,820
IlE'll-lOD or umuc counrmsm mass Filed Jan. 7, 1946 2 Sheets-Sheet 2 /0 INVENTOR m/vasr Bil/6655 ATTORNEYS Patented Aug- 22, 1950 METHOD or MAKING CONDENSER TUBES Ernest Bruegger, Mas'sillon, Ohio, assignor to The Griscom-Russell Company, New York, N. Y., a
corporation oi Delaware Application January 7, 1946, Serial No. 639,666
2 Claims. (Cl. 29-1573) t This invention relates to improvements in methods of making condenser tubes having a drip-directing fin extending longitudinally throughout the major length of the tube. Condenser tubes with drip fins of this character have certain advantages over ordinary tubes without fins but have not come into general use for the reason that heretofore the additional cost of such tubes has offset the advantages to be derived from their use. i
The principal object of the present invention is to provide a method of making such a tube which is easily carried out at low cost and which produces a. condenser tube of the above type wherein the fin is firmly anchored in place with little or no weakening of the tube structure.
A further object of the invention is to provide a method of making tubes of this character wherein the fin terminates just short of the tube at both ends so that the ends of the tubes are left round to permit the tube to be expanded in the tube sheet of the condenser in the usual manner.
In the accompanying drawings I have illustrated the sequence of steps constituting the preferred procedure for carrying my invention into effect, and in the said drawings Fig. 1 is a longitudinal section showing the grooving operation which'is the first step of my improved method;
Fig. 2 is a sectional view on line 2-4 of Fig.
Fig. 3 is an enlarged transverse section of the tube wall showing the shapeof the tube in cross section after the grooving operation;
Fig. 4 is a perspective view partly in section showing the procedure for carrying out the second step in the manufacture of the tube;
Fig. 5 is an enlarged sectional view showing in greater detail the operation of the crimping members;
Fig. 6 is an enlarged cross section of the tube showing in detail the connection formed by the crimping operation;
Figr'l is an inverted plan view of a section of the tube; and
Fig. 8 shows in side elevation an intermediate length of the finished tube.
Referring to the drawings, I indicates a length of tubing to which the fin is to be attached. In the first step of my process a section of this tubing 5 of the desired length is mounted on a mandrel 2 which has a longitudinal groove 3 on its upper side extending the full length of the mandrel. The mandrel a with the tube section z mounted thereon is moved under a grooving roll 4 which presses into the upper wall of the tube of a longitudinal groove 5 of the cross section indicated in Fig. 3. The groove 5 does not run the full length of the tube section. Instead at each end there is an ungrooved portion 6 of the original circular cross section, which is of suflicient length to be expanded in the tube sheet when the condenser is assembled. The groove 3 extends longitudinally throughout the length of the mandrel so that the tube I may be readily withdrawn from the mandrel.
After the tube is removed from the mandrel a strip [0 of fin material of the proper length is inserted edgewise in the groove 3 and the tube with the assembled fin is placed between two clamping blocks I I (see Fig. 4) whereby the tube I and the attached section of the fin are held firmly in place. The clamping blocks II are coextensive in length with the fin section 10 and throughout the length of the clamping blocks transversely reciprocating plungers I2 are supported at spaced intervals. The plungers I2 are placed opposite each other and after the tube is assembled with its finned section in the groove 3 the plungers I2 throughout the length of the blocks II are forced together, thereby crimping the metal of the tube at intervals against the base of the fin, as shown in Fig. 6. After the crimping operation the blocks H are separated and the finished tube section removed.
The crimping plungers 12 are preferably arranged opposite to each other and are operated in unison so that each acts to resist the pressure of the other. By shaping the ends of the plungers I! as shown the metal of the tube is forced inwardly and downwardly against the fin, thereby compressing the metal of the fin from opposite sides, as shown in Fig. 6.
The drip fin may be of uniform width throughout but is preferably serrated along its lower edge as indicated to provide spaced points from which the condensate drips uniformly through the length of the tube. With a fin of this type the crimping plungers are arranged at spaced intervals corresponding with the full width portions of the fin between the serrations so as to provide flow paths from the tube surface to each section of the fin.
It will of course be understood that the successive operations may be carried out with apparatus other than that shown and described. For example, the groove may be pressed into the tube by means of a die of suitable configuration. Also the crimping of the tube to hold the rib in place may be accomplished by feeding the tube longitudinally through a single pair of intermittently acting crimpers to crimp the rib in place at successive intervals. Various other changes in the apparatus for carrying the process into eilect may obviously be made.
It will also be understood that the invention is not limited to the precise operations herein shown and described but that such operations -may be variously modified within the scope of 4 groove in the outer wall 0! said tube and a rib along the inner wall of said tube, the groove and rib being of less length than the tube and termin'ating short of each end thereof, placing a tin in said groove and simultaneously upsetting the opposite side walls 0! said groove at spaced intervals along the length of said an to hold said fln in place. 1
ERNEST BRUEGGER.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,313,730 Pease Aug. 19, 1919 1,498,894 Steenstrup June 24, 1924 1,786,571 Lonsdale Dec. 30, 1930 1,842,117 Renshaw a Jan. 19, 1932 1,921,928 Jones et al. Aug. 8, 1933 1,928,639 Berg Oct. 3, 1933 1,929,540 Trane Oct. 10, 19 3
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US639666A US2519820A (en) | 1946-01-07 | 1946-01-07 | Method of making condenser tubes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US639666A US2519820A (en) | 1946-01-07 | 1946-01-07 | Method of making condenser tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
US2519820A true US2519820A (en) | 1950-08-22 |
Family
ID=24565062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US639666A Expired - Lifetime US2519820A (en) | 1946-01-07 | 1946-01-07 | Method of making condenser tubes |
Country Status (1)
Country | Link |
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US (1) | US2519820A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2773301A (en) * | 1950-11-21 | 1956-12-11 | Karmazin John | Method of making heat exchange unit |
US2778610A (en) * | 1953-03-11 | 1957-01-22 | Griscom Russell Co | Catalyst finned tubing and method of making |
US2947081A (en) * | 1955-09-01 | 1960-08-02 | Gen Motors Corp | Method of forming a splined sleeve |
US3154141A (en) * | 1959-04-28 | 1964-10-27 | Huet Andre | Roughened heat exchanger tube |
US3229490A (en) * | 1960-11-07 | 1966-01-18 | Jet Res Ct Inc | Apparatus for making linear shaped charge explosive devices |
US3800386A (en) * | 1969-02-26 | 1974-04-02 | A Bishop | Method and apparatus for manufacturing valve components |
US4103407A (en) * | 1977-01-07 | 1978-08-01 | The Bendix Corporation | Manufacturing method for a high pressure distributor rotor |
US4442579A (en) * | 1980-12-02 | 1984-04-17 | Adwest Engineering Limited | Method of and apparatus for producing valve rotors |
US20090056702A1 (en) * | 2007-08-29 | 2009-03-05 | Tom Kerber | Solar energy collecting assembly for a solar energy converter |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1313730A (en) * | 1917-04-06 | 1919-08-19 | Edward Lloyd Pease | Gilled heat-interchanging apparatus. |
US1498894A (en) * | 1922-04-28 | 1924-06-24 | Gen Electric | Method of manufacturing packing elements |
US1786571A (en) * | 1929-02-27 | 1930-12-30 | Foster Wheeler Corp | Method of making heat-exchanger tubes |
US1842117A (en) * | 1927-09-16 | 1932-01-19 | Renold Hans Ltd | Transmission chain |
US1921928A (en) * | 1930-07-16 | 1933-08-08 | Griscom Russell Co | Method of making finned tubing |
US1928639A (en) * | 1929-11-14 | 1933-10-03 | Alfred J Berg | Method of making heat exchangers |
US1929540A (en) * | 1931-11-27 | 1933-10-10 | Reuben N Trane | Heat exchanger |
-
1946
- 1946-01-07 US US639666A patent/US2519820A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1313730A (en) * | 1917-04-06 | 1919-08-19 | Edward Lloyd Pease | Gilled heat-interchanging apparatus. |
US1498894A (en) * | 1922-04-28 | 1924-06-24 | Gen Electric | Method of manufacturing packing elements |
US1842117A (en) * | 1927-09-16 | 1932-01-19 | Renold Hans Ltd | Transmission chain |
US1786571A (en) * | 1929-02-27 | 1930-12-30 | Foster Wheeler Corp | Method of making heat-exchanger tubes |
US1928639A (en) * | 1929-11-14 | 1933-10-03 | Alfred J Berg | Method of making heat exchangers |
US1921928A (en) * | 1930-07-16 | 1933-08-08 | Griscom Russell Co | Method of making finned tubing |
US1929540A (en) * | 1931-11-27 | 1933-10-10 | Reuben N Trane | Heat exchanger |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2773301A (en) * | 1950-11-21 | 1956-12-11 | Karmazin John | Method of making heat exchange unit |
US2778610A (en) * | 1953-03-11 | 1957-01-22 | Griscom Russell Co | Catalyst finned tubing and method of making |
US2947081A (en) * | 1955-09-01 | 1960-08-02 | Gen Motors Corp | Method of forming a splined sleeve |
US3154141A (en) * | 1959-04-28 | 1964-10-27 | Huet Andre | Roughened heat exchanger tube |
US3229490A (en) * | 1960-11-07 | 1966-01-18 | Jet Res Ct Inc | Apparatus for making linear shaped charge explosive devices |
US3800386A (en) * | 1969-02-26 | 1974-04-02 | A Bishop | Method and apparatus for manufacturing valve components |
US4103407A (en) * | 1977-01-07 | 1978-08-01 | The Bendix Corporation | Manufacturing method for a high pressure distributor rotor |
US4442579A (en) * | 1980-12-02 | 1984-04-17 | Adwest Engineering Limited | Method of and apparatus for producing valve rotors |
US20090056702A1 (en) * | 2007-08-29 | 2009-03-05 | Tom Kerber | Solar energy collecting assembly for a solar energy converter |
US8104466B2 (en) * | 2007-08-29 | 2012-01-31 | Tom Kerber | Solar energy collecting assembly for a solar energy converter |
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