Title:
吸収式熱交換器の吸収器用伝熱管
Document Type and Number:
Japanese Patent JP3992833
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve wetting spreadability in a tube peripheral direction and a tube axial direction, and improving absorption heat transfer performance by forming a protruding part in the tube axial direction of an independent boss and providing a recessed part on the outside of the tube. SOLUTION: In a heat exchanger tube 1, a plurality of ribs 2 are formed on the inside thereof spirally extending in a twisting direction in a tube axial direction, and a recessed part 3 is formed on the outside thereof spirally extending in an area matching the rib 2. On the outside of heat exchanger 1 is formed a mutually independent boss 4. The boss 4 forms a quadrangular truncated pyramid, and a protruding part 5 is formed, and both sides thereof parallel in the tube axial direction protrude in an axial direction. Further, the top of the boss 4 is recessed to lower in an area which matches the recessed part 3 (forming the rib 2) on the outside of the tube, forming a recessed part 6. As a result, liquid dropped or sprayed on the outside surface of the heat exchanger tube 1 is made to flow easily in the tube axial direction, and the wetting spreadability of a solution is improved.
Inventors:
Hiroyuki Takahashi
Saeki main tax
Saeki main tax
Application Number:
JP11416798A
Publication Date:
October 17, 2007
Filing Date:
April 08, 1998
Export Citation:
Assignee:
Kobelco Material Copper Tube Co., Ltd.
International Classes:
F25B37/00; F28F1/42; F28D3/02
Domestic Patent References:
| JP54159754A | ||||
| JP1291074A | ||||
| JP58050143A | ||||
| JP5223480A | ||||
| JP8035739A | ||||
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Attorney, Agent or Firm:
Masanori Fujimaki