MY113677A - Heat transfer tube having grooved inner surface and production method therefor - Google Patents

Heat transfer tube having grooved inner surface and production method therefor

Info

Publication number
MY113677A
MY113677A MYPI96004298A MYPI19964298A MY113677A MY 113677 A MY113677 A MY 113677A MY PI96004298 A MYPI96004298 A MY PI96004298A MY PI19964298 A MYPI19964298 A MY PI19964298A MY 113677 A MY113677 A MY 113677A
Authority
MY
Malaysia
Prior art keywords
weld portion
tube
fins
heat transfer
transfer tube
Prior art date
Application number
MYPI96004298A
Inventor
Miyauchi Makoto
Sukumoda Shunroku
Arayama Yoshikatsu
Nagahara Kohtaroh
Kohno Haruo
Kazama Takashi
Original Assignee
Mitsubishi Shindo Kk
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=17498660&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=MY113677(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mitsubishi Shindo Kk filed Critical Mitsubishi Shindo Kk
Publication of MY113677A publication Critical patent/MY113677A/en

Links

Abstract

THE OBJECT OF THE PRESENT INVENTION IS TO OFFER A HEAT TRANSFER TUBE HAVING A GROOVED INNER SURFACE, WHEREIN THE SIDE EDGES OF THE BOARD MATERIAL DO NOT FORM A WAVED SHAPE AND CRACKS DO NOT FORM DURING TUBE EXPANSION. IN ORDER TO ACHIEVE THIS OBJECT, THE GROOVED-INNER-SURFACE HEAT TRANSFER TUBE OF THE PRESENT INVENTION HAS A METALLIC TUBE WITH AN INNER CIRCUMFERENTIAL SURFACE, ON WHICH ARE FORMED A WELD PORTION WHICH EXTENDS IN AN AXIAL DIRECTION OF THIS METALLIC TUBE, A PAIR OF PROJECTING STRIP PORTIONS FORMED PARALLEL TO AND SEPARATE FROM THIS WELD PORTION, AND A PLURALITY OF FINS FORMED IN AN AREA BETWEEN THESE PROJECTING STRIP PORTIONS. THE FINS ARE FORMED WITH A CONSTANT ANGLE WITH RESPECT TO THE TUBE AXIS, AND THE ENDS OF THESE FINS ARE CONNECTED WITH THE PROJECTING STRIP PORTIONS. THE THICKNESS OF THE METALLIC TUBE WITHIN THE GROOVES FORMED BETWEEN THE FINS IS MADE TO INCREASE IN APPROACHING THE WELD PORTION WITHIN AN AREA SURROUNDING THE WELD PORTION WHEREIN THE CENTRAL ANGLE IS WITHIN 30?- 90? ON BOTH SIDES FROM THE CENTER OF WELD PORTION FIG1
MYPI96004298A 1995-10-19 1996-10-16 Heat transfer tube having grooved inner surface and production method therefor MY113677A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7271337A JP3069277B2 (en) 1995-10-19 1995-10-19 Heat transfer tube with inner groove and method of manufacturing the same

Publications (1)

Publication Number Publication Date
MY113677A true MY113677A (en) 2002-04-30

Family

ID=17498660

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI96004298A MY113677A (en) 1995-10-19 1996-10-16 Heat transfer tube having grooved inner surface and production method therefor

Country Status (2)

Country Link
JP (1) JP3069277B2 (en)
MY (1) MY113677A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6066946B2 (en) * 2014-03-10 2017-01-25 三菱電機株式会社 Extrusion die, heat transfer tube manufacturing method, and heat transfer tube

Also Published As

Publication number Publication date
JPH09108732A (en) 1997-04-28
JP3069277B2 (en) 2000-07-24

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