JPH0264374A - Heat transfer tube for absorber and manufacture thereof - Google Patents

Heat transfer tube for absorber and manufacture thereof

Info

Publication number
JPH0264374A
JPH0264374A JP21466188A JP21466188A JPH0264374A JP H0264374 A JPH0264374 A JP H0264374A JP 21466188 A JP21466188 A JP 21466188A JP 21466188 A JP21466188 A JP 21466188A JP H0264374 A JPH0264374 A JP H0264374A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
tube
outer surface
crests
formed
troughs
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.)
Pending
Application number
JP21466188A
Inventor
Yoshihiro Hiramatsu
Yukihide Kito
Yoshihiro Nishimoto
Kiyoshi Nosetani
Original Assignee
Sumitomo Light Metal Ind Ltd
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

Links

Abstract

PURPOSE: To make absorbing liquid in respective troughs flow down effectively and prevent the stagnation of the same by a method wherein a plurality of crests and troughs, extending axially on the outer surface of a tube, is formed alternately while a multitude of slant grooves, crossing diagonally respective crests formed on the outer surface of the tube respectively, is formed.
CONSTITUTION: When a heat transfer tube is manufactured by a non-worked cylindrical tube, the tube is passed through a die, in which a plurality of axially extending crests and troughs is formed alternately, to form objective crests and troughs on the outer surface of the cylindrical tube. An indenting tool, provided with projected spiral threads on the inner surface or the outer surface thereof, is employed to push the projected threads against the crests, formed on the outer surface of the heat transfer tube, and form slant grooves on the crests while the outer surface of the cylindrical tube is recessed at positions corresponding to the slant grooves to make protrusions on the inner surface of the cylindrical tube at positions corresponding to the recesses formed on the outer surface of the same tube.
COPYRIGHT: (C)1990,JPO&Japio
JP21466188A 1988-08-29 1988-08-29 Heat transfer tube for absorber and manufacture thereof Pending JPH0264374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21466188A JPH0264374A (en) 1988-08-29 1988-08-29 Heat transfer tube for absorber and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21466188A JPH0264374A (en) 1988-08-29 1988-08-29 Heat transfer tube for absorber and manufacture thereof

Publications (1)

Publication Number Publication Date
JPH0264374A true true JPH0264374A (en) 1990-03-05

Family

ID=16659468

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21466188A Pending JPH0264374A (en) 1988-08-29 1988-08-29 Heat transfer tube for absorber and manufacture thereof

Country Status (1)

Country Link
JP (1) JPH0264374A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7651578B2 (en) * 2006-06-08 2010-01-26 Boston Scientific Scimed, Inc. Guidewire with polymer jacket and method of making
US7790705B2 (en) 2005-06-24 2010-09-07 Medicis Pharmaceutical Corporation Minocycline oral dosage forms for the treatment of acne

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7790705B2 (en) 2005-06-24 2010-09-07 Medicis Pharmaceutical Corporation Minocycline oral dosage forms for the treatment of acne
US7651578B2 (en) * 2006-06-08 2010-01-26 Boston Scientific Scimed, Inc. Guidewire with polymer jacket and method of making

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