HEATING TUBE FOR ABSORBER AND METHOD OF MANUFACTURING SAME

Title:

HEATING TUBE FOR ABSORBER AND METHOD OF MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/1998/026239

Kind Code:

A1

Abstract:

A heating tube for absorbers, which has a heat transfer performance improving rate corresponding to a heat transfer area increasing rate, is equivalent to a smooth tube in mass per unit length, and is not increased in stock material cost. A heating tube (2) for absorbers is constructed such that a plurality of mountain portions (4), extending in an axial direction of the tube on a tube outer surface and having a configuration of arcuate curved surface in a circumferential direction of the tube, are arranged to form valleys (6) between adjacent mountain portions (4) in the circumferential direction, and irregularities are formed on a tube inner surface to correspond to the mountain portions (4) and valleys (6) and that an adsorbent is made to drip or sprinkle on the tube outer surface while a cooling liquid in the tube cools the adsorbent outside the tube. Provided on the respective mountain portion (4) and spaced from one another in the axial direction of the tube are a multiplicity of recesses (8) extending in the circumferential direction of the tube with either bottom sectional configuration, respectively, in the axial direction of the tube and in the circumferential direction of the tube assuming curved surfaces, so that the mountain portions (4) between the recesses (8) are formed as independent fins (10) and opposite ends of the recesses (8) in the circumferential direction of the tube are formed gradually smaller in width to converge.

More Like This:

WO/2002/092251

TUBE CORRUGATING APPARATUS AND METHOD

Inventors:

YAMAZAKI SHIGUMA (JP)
SASAKI NAOE (JP)
EGUCHI AKIO (JP)

Application Number:

PCT/JP1997/004554

Publication Date:

June 18, 1998

Filing Date:

December 10, 1997

Export Citation:

Click for automatic bibliography generation Help

Assignee:

SANYO ELECTRIC CO (JP)
SUMITOMO LIGHT METAL IND (JP)
YAMAZAKI SHIGUMA (JP)
SASAKI NAOE (JP)
EGUCHI AKIO (JP)

International Classes:

B21C37/20; B21D15/00; F25B37/00; F28D3/02; F28F1/06; F28F1/42; (IPC1-7): F25B37/00; B21D53/06; F28F1/06; F28F1/12

Foreign References:

JPH0745994B2	1995-05-17
JPH06159862A	1994-06-07
JPH08159605A	1996-06-21
JPH07218037A	1995-08-18
JPH0724522A	1995-01-27
JPS636363A	1988-01-12
JPH0289270A	1990-03-29
JPH02176378A	1990-07-09
JPH07111287A	1995-04-25
JPH0724522A	1995-01-27

Other References: