HEAT TRANSFER FIN, FIN TUBE-TYPE HEAT EXCHANGER AND REFRIGERATING CYCLE DEVICE

Title:

HEAT TRANSFER FIN, FIN TUBE-TYPE HEAT EXCHANGER AND REFRIGERATING CYCLE DEVICE

Document Type and Number:

Japanese Patent JP2008215670

Kind Code:

A

Abstract:

To provide a new fin and a fine tube-type heat exchanger which improving heat transfer coefficient while preventing increase of pressure loss.

This fin 13 of the fin tube-type heat exchanger 10 is provided with elliptic hill-shaped first raised portion 14A and second raised portion 14B, and equivalent diameters of the first raised portion 14A and the second raised portion 14B are more than an outer diameter of the heat transfer tube 12 when observed from the extending direction of the heat transfer tube 12. Nearly V-shaped first cut portion 17A and second cut portion 17B are respectively formed on windward sides of the first raised portion 14A and the second raised portion 14B. A center of the heat transfer tube 12 is positioned on each of the extensions of the first cut portion 17A and the second cut portion 17B when observed from the extending direction of the heat transfer tube 12.

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Inventors:

OGAWA OSAMU
KOMORI AKIRA
HAYASHI HIROKI

Application Number:

JP2007051003A

Publication Date:

September 18, 2008

Filing Date:

March 01, 2007

Export Citation:

Click for automatic bibliography generation Help

Assignee:

MATSUSHITA ELECTRIC IND CO LTD

International Classes:

F28F1/32; F25B39/00; F28D1/053

Attorney, Agent or Firm:

Fumio Iwahashi
Hiroki Naito
Daisuke Nagano

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