To reduce the channel resistance of chill and the cost by eliminating a thermal insulation material of a duct for blowing chill into a refrigeration compartment and to thermally insulate a temperature sensor provided in the duct from chill.

In a freezer/refrigerator 10 where the refrigeration zone 24 of refrigeration temperature band including a refrigeration compartment 12 is cooled by a dedicated cooler 20 for refrigeration separately from a freezing zone 32 of freezing temperature band including a freezing compartment 16, a duct 34 is formed in the rear of the refrigeration compartment 12 by the inner box 50 of a refrigerator and a thin planar duct forming member 56 of resin molding disposed in front of the inner box 50. A small thermal insulation material 63 is placed partially on the rear surface of the duct forming member 56 and a sensor 62 for detecting the temperature of the refrigeration compartment 12 is provided on the inside of the thermal insulation material 63.