Title:
空気熱交換器
Document Type and Number:
Japanese Patent JP5799382
Kind Code:
B2
Abstract:
Provided is an air heat exchanger capable of preventing an increase in ventilation resistance and a decrease in heat exchange efficiency due to condensation water generated on surfaces of heat transfer fins, without increasing thermal resistance of flat tubes and the heat transfer fins, and preventing scattering of water droplets downwind from the heat transfer fins. In the air heat exchanger including a plurality of flat tubes 2 and heat transfer fins 5 provided between the flat tubes 2 and on which air is blown, the flat tubes 2 include water draining grooves 4 on side surfaces on which the heat transfer fins 5 are provided and the heat transfer fins 5 include water guiding grooves 6 communicating with the water draining grooves 4. At least a groove wall 40 on the upwind side of an air blowing direction 10 among groove walls forming the water guiding grooves 6 is provided from a position of the upwind side from the water draining grooves 4 to the water draining grooves 4. The water guiding grooves 6 extend toward the water draining grooves 4 along the groove wall 40 on the upwind side and an area of a cross section perpendicular to an extension direction decreases toward the water draining grooves 4.
Inventors:
Ko Sato
Shigeyuki Sasaki
Shigeyuki Sasaki
Application Number:
JP2014519757A
Publication Date:
October 28, 2015
Filing Date:
June 07, 2012
Export Citation:
Assignee:
Hitachi Appliances, Inc.
International Classes:
F25B39/02; F28F1/30; F28D1/053; F28F1/32; F28F17/00
Domestic Patent References:
| JP2012072955A | 2012-04-12 | |||
| JP2010025482A | 2010-02-04 | |||
| JP2005024187A | 2005-01-27 | |||
| JP2010025476A | 2010-02-04 | |||
| JP2005241168A | 2005-09-08 | |||
| JP2008116095A | 2008-05-22 |
Foreign References:
| WO2009044593A1 | 2009-04-09 | |||
| US20080035318A1 | 2008-02-14 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation