US1804465A - Heat transfer tube - Google Patents

Heat transfer tube Download PDF

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Publication number
US1804465A
US1804465A US317300A US31730028A US1804465A US 1804465 A US1804465 A US 1804465A US 317300 A US317300 A US 317300A US 31730028 A US31730028 A US 31730028A US 1804465 A US1804465 A US 1804465A
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United States
Prior art keywords
tube
transfer tube
heat transfer
ribs
bore
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
Application number
US317300A
Inventor
Francis X Govers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
INDIAN REFINING CO
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INDIAN REFINING CO
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by INDIAN REFINING CO filed Critical INDIAN REFINING CO
Priority to US317300A priority Critical patent/US1804465A/en
Application granted granted Critical
Publication of US1804465A publication Critical patent/US1804465A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • F28F1/14—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 longitudinally
    • F28F1/16—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 longitudinally the means being integral with the element, e.g. formed by extrusion

Definitions

  • peripherally uniform diameter a bore of circular cross-section throughout its length and enlarged at its ends, and longitudinally extending exterior ribs, whose outer ends are within said periphery.
  • This invention relates to tubes through whose Walls heat is to be transferred.
  • My invention relates to the particular construction of such a tube whereby it is easily made, and is so constructed that its end or ends can easily be secured into a tube-sheet, as by theexpansion methodor by electric welding.
  • Fig. 1 is a longitudinal section
  • Fig.2 is an enlarged cross-section on plane 2, 2 of Fig. 1;
  • Fig. 3 is a sectional detail of a portion of atube-sheet
  • Fi 1 is a longitudinal section of a modi- 9 fied orm.
  • the tube is made from a length of pipe, advantageously seamless steel tubing, of a given substantially uniform outside diameter and bore.
  • the end. portions of the bore may be enlarged as by boring out to form a chamber or chambers 1', 1 large enough to afford access to the expanding tool, by which the end or ends are expanded into the grooves 2, of an opening in a tubesheet 3.
  • Ribs 4, 4 are formed on the outside of the tube by cutting away the metal of the tube, between the end portions.v 'llie overall peripheral diameter of the tube is thus unchanged, but portions of the metal have been removed from the inside at the end or ends to adequately enlarge the bore for the purpose stated, and portions of the metal have .been removed from the outside to form the ribs, and thus largely increase the surface.
  • the enlargement or chamber 1 may be omitted, as shown in Fig. 4.
  • a heat-transfer tube having an overall peripherally uniform diameter, a bore of circular cross-section throughout its length, and longitudinally extending exterior ribs whose outer ends are within said periphery, said ribs being of less length than the tube. 2.
  • a heat-transfer tube having an over-

Description

May 12, 1931.
F. x. G OVERS HEAT TRANSFER TUBE Filed NOV. 5, 1928 mento':
Patented May 12, 1931 UNETD STATES PATENT OFFICE FRANCIS X. GOVERS, OF LAWRENCEVILLE, ILLINOIS, ASSIGNOR TO INDIAN REFIN'ING COMPANY, OF LAWRENGEVILLE, ILLINOIS, A CORPORATION OF MAINE I HEAT TRANSFER TUBE Application filed. November 5, 1928. Serial No. 317,300.
all peripherally uniform diameter, a bore of circular cross-section throughout its length and enlarged at its ends, and longitudinally extending exterior ribs, whose outer ends are within said periphery.
3. A heat-transfer tube as claimed in claim 1, in which the ribs are formed by removing the metal of the tube between the ribs.
In testimony whereof, I affix m signature.
FRANCIS X. OVERS.
This invention relates to tubes through whose Walls heat is to be transferred.
It is, of course, well known to provide tubes intended for this purpose with longitudinal- 1y extending fins to afford additionalsurface.
My invention relates to the particular construction of such a tube whereby it is easily made, and is so constructed that its end or ends can easily be secured into a tube-sheet, as by theexpansion methodor by electric welding. L
In the drawings:
Fig. 1 is a longitudinal section;
Fig.2 is an enlarged cross-section on plane 2, 2 of Fig. 1;
Fig. 3 is a sectional detail of a portion of atube-sheet, and
Fi 1 is a longitudinal section of a modi- 9 fied orm.
The tube is made from a length of pipe, advantageously seamless steel tubing, of a given substantially uniform outside diameter and bore. The end. portions of the bore may be enlarged as by boring out to form a chamber or chambers 1', 1 large enough to afford access to the expanding tool, by which the end or ends are expanded into the grooves 2, of an opening in a tubesheet 3.
Ribs 4, 4 are formed on the outside of the tube by cutting away the metal of the tube, between the end portions.v 'llie overall peripheral diameter of the tube is thus unchanged, but portions of the metal have been removed from the inside at the end or ends to adequately enlarge the bore for the purpose stated, and portions of the metal have .been removed from the outside to form the ribs, and thus largely increase the surface.
If it be preferred to electrically weld the tube into the tube-sheet, the enlargement or chamber 1 may be omitted, as shown in Fig. 4.
I claim:
1. A heat-transfer tube having an overall peripherally uniform diameter, a bore of circular cross-section throughout its length, and longitudinally extending exterior ribs whose outer ends are within said periphery, said ribs being of less length than the tube. 2. A heat-transfer tube having an over-
US317300A 1928-11-05 1928-11-05 Heat transfer tube Expired - Lifetime US1804465A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US317300A US1804465A (en) 1928-11-05 1928-11-05 Heat transfer tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US317300A US1804465A (en) 1928-11-05 1928-11-05 Heat transfer tube

Publications (1)

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US1804465A true US1804465A (en) 1931-05-12

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US317300A Expired - Lifetime US1804465A (en) 1928-11-05 1928-11-05 Heat transfer tube

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD861839S1 (en) * 2015-05-21 2019-10-01 Kobe Steel, Ltd. Heat exchanger tube
USD865141S1 (en) * 2015-05-21 2019-10-29 Kobe Steet, Ltd. Heat exchanger tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD861839S1 (en) * 2015-05-21 2019-10-01 Kobe Steel, Ltd. Heat exchanger tube
USD865141S1 (en) * 2015-05-21 2019-10-29 Kobe Steet, Ltd. Heat exchanger tube

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