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FR2356901A1 - Heat transfer device fitted inside a tube - is braced against tube wall by thrust of fluid on fitting causing radial expansion - Google Patents

Heat transfer device fitted inside a tube - is braced against tube wall by thrust of fluid on fitting causing radial expansion

Info

Publication number
FR2356901A1
FR2356901A1 FR7719778A FR7719778A FR2356901A1 FR 2356901 A1 FR2356901 A1 FR 2356901A1 FR 7719778 A FR7719778 A FR 7719778A FR 7719778 A FR7719778 A FR 7719778A FR 2356901 A1 FR2356901 A1 FR 2356901A1
Authority
FR
France
Prior art keywords
wall
pipe
tube
fittings
heat transfer
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.)
Granted
Application number
FR7719778A
Other languages
French (fr)
Other versions
FR2356901B1 (en
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.)
Transelektro Magyar Villamossagi Kulkereskedelmi
Original Assignee
Transelektro Magyar Villamossagi Kulkereskedelmi
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
Priority claimed from HU76EE2429A external-priority patent/HU173583B/en
Application filed by Transelektro Magyar Villamossagi Kulkereskedelmi filed Critical Transelektro Magyar Villamossagi Kulkereskedelmi
Publication of FR2356901A1 publication Critical patent/FR2356901A1/en
Application granted granted Critical
Publication of FR2356901B1 publication Critical patent/FR2356901B1/en
Expired legal-status Critical Current

Links

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

A device for improving the heat transfer between a fluid flowing in a tube and the tube comprises internal ribs bearing against the inner tube wall. These ribs are formed by numerous teeth or serrated fittings, extending radially outwards from the centre of the pipe to its inner wall and bearing with a slight spring or elastic force against that wall under the action of a fluid flowing in the one direction, but tending to contract away from the wall when pushed in the other direction. A succession of such fittings is incorporated along the length of the pipe. Pref., each tooth makes an acute angle with the pipe axis and, in the unstressed state, the external dia. of the teeth slightly exceeds the bore of the tube. The outer ends of the teeth may have feet which fit the inner wall surface. The fittings are easily introduced in one direction, since they tend to decrease in dia. when thrust in that direction. In use, the fluid flows in the opposite direction, thereby tending to cause the fittings to expand and brace themselves firmly against the pipe wall. They thus cannot become dislodged, even if the pipe should become blocked. Good heat transfer is obtd. by the tight contact between the fittings and the pipe wall.
FR7719778A 1976-06-30 1977-06-28 DEVICE FOR IMPROVING HEAT TRANSFER IN HEAT EXCHANGER TUBES Expired FR2356901B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU76EE2429A HU173583B (en) 1976-06-30 1976-06-30 Device for increasing the heat transfer in heat exchanger tubes
HUTA002429 1976-06-30

Publications (2)

Publication Number Publication Date
FR2356901A1 true FR2356901A1 (en) 1978-01-27
FR2356901B1 FR2356901B1 (en) 1980-04-04

Family

ID=26318452

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7719778A Expired FR2356901B1 (en) 1976-06-30 1977-06-28 DEVICE FOR IMPROVING HEAT TRANSFER IN HEAT EXCHANGER TUBES

Country Status (1)

Country Link
FR (1) FR2356901B1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436959A1 (en) * 1978-09-19 1980-04-18 Ferodo Sa Helical insert for heat exchanger tubes - has S=shaped cross=section with reinforced core to create turbulent flow
FR2442421A1 (en) * 1978-11-24 1980-06-20 Ferodo Sa IMPROVEMENTS TO TUBULAR HEAT EXCHANGERS AND AGITATORS INTENDED FOR SUCH EXCHANGERS
FR2461915A1 (en) * 1979-07-16 1981-02-06 Transelektro Magyar Villamossa FIN LINING MADE FROM METAL STRIPS FOR IMPROVING HEAT TRANSMISSION
FR2512940A1 (en) * 1981-09-14 1983-03-18 Sueddeutsche Kuehler Behr Insert for flat heat exchanger tubes - promotes turbulence by transverse ribs ridged alternately in opposite directions
EP0181711A1 (en) * 1984-10-18 1986-05-21 A.O. Smith Corporation Heat exchanger having an improved turbulator construction
FR2614407A1 (en) * 1987-04-21 1988-10-28 Valeo Turbulator for a heat-exchanger tube, particularly for a motor vehicle
FR2659730A1 (en) * 1990-03-19 1991-09-20 Muller Cie Mixing device, especially for gas boilers
CN107401837A (en) * 2017-09-12 2017-11-28 成都市双流壁挂热交换器有限责任公司 stainless steel bloop
EP3379190A4 (en) * 2015-11-20 2019-09-18 Hideyuki Haruyama Heat exchange mixing device and solution conveying/cooling device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436959A1 (en) * 1978-09-19 1980-04-18 Ferodo Sa Helical insert for heat exchanger tubes - has S=shaped cross=section with reinforced core to create turbulent flow
FR2442421A1 (en) * 1978-11-24 1980-06-20 Ferodo Sa IMPROVEMENTS TO TUBULAR HEAT EXCHANGERS AND AGITATORS INTENDED FOR SUCH EXCHANGERS
FR2461915A1 (en) * 1979-07-16 1981-02-06 Transelektro Magyar Villamossa FIN LINING MADE FROM METAL STRIPS FOR IMPROVING HEAT TRANSMISSION
FR2512940A1 (en) * 1981-09-14 1983-03-18 Sueddeutsche Kuehler Behr Insert for flat heat exchanger tubes - promotes turbulence by transverse ribs ridged alternately in opposite directions
EP0181711A1 (en) * 1984-10-18 1986-05-21 A.O. Smith Corporation Heat exchanger having an improved turbulator construction
FR2614407A1 (en) * 1987-04-21 1988-10-28 Valeo Turbulator for a heat-exchanger tube, particularly for a motor vehicle
FR2659730A1 (en) * 1990-03-19 1991-09-20 Muller Cie Mixing device, especially for gas boilers
EP3379190A4 (en) * 2015-11-20 2019-09-18 Hideyuki Haruyama Heat exchange mixing device and solution conveying/cooling device
CN107401837A (en) * 2017-09-12 2017-11-28 成都市双流壁挂热交换器有限责任公司 stainless steel bloop

Also Published As

Publication number Publication date
FR2356901B1 (en) 1980-04-04

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Legal Events

Date Code Title Description
ST Notification of lapse