US755558A - Tube for boilers. - Google Patents

Tube for boilers. Download PDF

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Publication number
US755558A
US755558A US17824503A US1903178245A US755558A US 755558 A US755558 A US 755558A US 17824503 A US17824503 A US 17824503A US 1903178245 A US1903178245 A US 1903178245A US 755558 A US755558 A US 755558A
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tube
boilers
portions
zigzag
liquid
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Expired - Lifetime
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US17824503A
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Thomas Walter Barber
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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
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation

Definitions

  • This invention relates to certain improvements in tubes for use in boilers, condensers, feed-water heaters, and the like; and my object is to obtain a high heat-transmitting' capacity. To this end the direction and diameter of the bore of the tube are continually altered in a novel way, whereby all parts of the liquid are brought into touch with the walls of the tube.
  • Figure 1 is a front elevation of a tube constructed in accordance with my invention
  • Fig. 2 is a view taken at right angles to that shown in Fig. l.
  • the tube a which was originally cylindrical in shape, is bent in zigzag form in opposite directions, so that at the points where it is bent, it is partially closed. Consequently the liquid flowing through it is continually changing its angle, and on account of the reduced diameter of the tube the speed at which it iiows is reduced, so that the particles of liquid are intimately mixed with each other and are all brought into close contact with the walls of the tube.
  • Tubes made in accordance with my invention may be easily made, each bend I) being on one side oi' the tube only, and as these bends are alternately on opposite sides of the tube a zigzag passage for the liquid is aorded.
  • a tube for boilers and the like having a bore formed with a zigzag passage through it which is provided at intervals with constricted portions and with portions of larger area between the constricted portions.
  • a tube for boilers and the like bent and iiattened at intervals throughout its length and on opposite sides to provide a zigzag bore with constricted portions on opposite sides of the tube and with portions of full size between said constricted portions.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Description

UNITED STATES Patented March 22, 1904.
PATENT OEEICE.
TUBE FOR BOILERS.
SPECIFICATION forming part of Letters Patent No. 755,558, dated March 22, 1904.
Application iiled October 23, 1903. Serial No. 178,245. (No model.)
To @ZZ whom t may concern,.-
Be it known that I, THOMAS WALTER BAR- BER, a subject of His Majesty the King of Great Britain, residing at Westminster, in the county of London and Kingdom of England, have invented certain new and useful Improvements in Tubes for Boilers, Oondensers, and the Like, of which the following is a speciication.
This invention relates to certain improvements in tubes for use in boilers, condensers, feed-water heaters, and the like; and my object is to obtain a high heat-transmitting' capacity. To this end the direction and diameter of the bore of the tube are continually altered in a novel way, whereby all parts of the liquid are brought into touch with the walls of the tube.
In carrying out my invention I take an ordinary cylindrical tube and bend it backward and forward zigzag fashion throughout its length in such manner as to constrict the internal area at the bends and to leave the portions between the bends of approximately the original section.
In the accompanying drawings, Figure 1 is a front elevation of a tube constructed in accordance with my invention, and Fig. 2 is a view taken at right angles to that shown in Fig. l.
The tube a, which was originally cylindrical in shape, is bent in zigzag form in opposite directions, so that at the points where it is bent, it is partially closed. Consequently the liquid flowing through it is continually changing its angle, and on account of the reduced diameter of the tube the speed at which it iiows is reduced, so that the particles of liquid are intimately mixed with each other and are all brought into close contact with the walls of the tube. Tubes made in accordance with my invention may be easily made, each bend I) being on one side oi' the tube only, and as these bends are alternately on opposite sides of the tube a zigzag passage for the liquid is aorded.
I claim as my invention- 1. A tube for boilers and the like having a bore formed with a zigzag passage through it which is provided at intervals with constricted portions and with portions of larger area between the constricted portions.
2. A tube for boilers and the like bent and iiattened at intervals throughout its length and on opposite sides to provide a zigzag bore with constricted portions on opposite sides of the tube and with portions of full size between said constricted portions.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
THOMAS I/VALTER BARBER.
Witnesses:
A. F. SrooNER, H. W. COOPER.
US17824503A 1903-10-23 1903-10-23 Tube for boilers. Expired - Lifetime US755558A (en)

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US17824503A US755558A (en) 1903-10-23 1903-10-23 Tube for boilers.

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4798241A (en) * 1983-04-04 1989-01-17 Modine Manufacturing Mixed helix turbulator for heat exchangers
US20080029243A1 (en) * 2003-11-25 2008-02-07 O'donnell Michael J Heat exchanger tube with integral restricting and turbulating structure
US20180372413A1 (en) * 2017-06-22 2018-12-27 Rheem Manufacturing Company Heat Exchanger Tubes And Tube Assembly Configurations

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4798241A (en) * 1983-04-04 1989-01-17 Modine Manufacturing Mixed helix turbulator for heat exchangers
US20080029243A1 (en) * 2003-11-25 2008-02-07 O'donnell Michael J Heat exchanger tube with integral restricting and turbulating structure
US8459342B2 (en) * 2003-11-25 2013-06-11 Beckett Gas, Inc. Heat exchanger tube with integral restricting and turbulating structure
US20180372413A1 (en) * 2017-06-22 2018-12-27 Rheem Manufacturing Company Heat Exchanger Tubes And Tube Assembly Configurations
WO2018236463A1 (en) * 2017-06-22 2018-12-27 Rheem Manufacturing Company Heat exchanger tubes and tube assembly configurations
US11774179B2 (en) 2017-06-22 2023-10-03 Rheem Manufacturing Company Heat exchanger tubes and tube assembly configurations

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