Title:
HEAT EXCHANGER, ITS MANUFACTURE, AND REFRIGERATOR EQUIPPED THEREWITH
Document Type and Number:
Japanese Patent JP3854423
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a heat exchanger for air conditioning, particularly for a refrigerator, in which cost to effect is sharply improved.
SOLUTION: A refrigerant tube 3 is adapted such that a plurality of straight tube portions are coupled in succession in a meandering fashion with bent tube portions 3a, and a plurality of independent and flat plate fin shaped fins 2 are fixed to the straight tube portions, and further the number of lines of the straight tube portions is more increased than the number of stages, resulting in an extended flat configuration in a ventilation direction of an air stream 4. On opposite ends of the fins 2 in a stage direction B, a plurality of cantilevered protruded pieces 5 are provided by cuts extending perpendicularly to the foregoing ends, which pieces 5 have bent angles thereof different in succession. Hereby, front edge effect is ensured for the air stream 4 with the vertical cut portions 5, and heat exchange performance is sharply improved. Similar vertical cut protrusions 6 are provided also at the center of the respective fins 2, also the front edge effect is ensured, and further heat exchange performance is improved.
Inventors:
Mitsutaka Shizuya
Masayuki Shibayama
Koichi Shibata
Eiichi Takahashi
Masayuki Shibayama
Koichi Shibata
Eiichi Takahashi
Application Number:
JP10832399A
Publication Date:
December 06, 2006
Filing Date:
April 15, 1999
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
B21D53/08; F28F1/32; F25D17/08; (IPC1-7): F28F1/32; B21D53/08; F25D17/08
Domestic Patent References:
| JP2115677U | ||||
| JP4279234A | ||||
| JP59217465A | ||||
| JP4190939A | ||||
| JP6015394A | ||||
| JP61272593A | ||||
| JP57120093A | ||||
| JP60235995A | ||||
| JP10089873A |
Other References:
小間八郎,冷蔵庫用高効率オールアルミニウム蒸発器,National Technical report,株式会社松下テクノリサーチ,1984年10月18日,第30巻第5号,pp.738-744
Attorney, Agent or Firm:
Kenjiro Take