Title:
HEAT INSULATION BOX
Document Type and Number:
Japanese Patent JP2015166653
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a heat insulation box in which heat leakage is less and time deterioration of heat insulation performance is suppressed.SOLUTION: A heat insulation box 15 includes an inner box (hot water storage tank 1), an outer box (sheath bodies 2, 3, 8, 10) housing the inner box, and a foaming heat insulation material 20 filled between the inner box and outer box. The average air bubble diameter of the foaming heat insulation material 20 filled in one half part of the space between the inner box and outer bod in the vertical direction of the heat insulation box 15 is made smaller than the average air bubble diameter in the other half part of the space between the inner box and outer box.
Inventors:
IZEKI TAKASHI
FUSHIKI TAKAYUKI
FUSHIKI TAKAYUKI
Application Number:
JP2014040954A
Publication Date:
September 24, 2015
Filing Date:
March 03, 2014
Export Citation:
Assignee:
HITACHI APPLIANCES INC
International Classes:
F25D23/08; F24H9/00
Attorney, Agent or Firm:
Isono Dozo
Etsuo Tada
Etsuo Tada