US 11,933,537 B2
Refrigerator
Kiyoshi Mori, Shiga (JP); Kei Nambu, Kyoto (JP); and Tsuyoki Hirai, Shiga (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/287,083
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Aug. 6, 2019, PCT No. PCT/JP2019/030915
§ 371(c)(1), (2) Date Apr. 20, 2021,
PCT Pub. No. WO2020/084864, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. 2018-199431 (JP), filed on Oct. 23, 2018.
Prior Publication US 2021/0389049 A1, Dec. 16, 2021
Int. Cl. F25D 31/00 (2006.01); F25D 25/02 (2006.01); F25D 29/00 (2006.01); G01N 21/55 (2014.01); H05B 6/62 (2006.01)
CPC F25D 31/005 (2013.01) [F25D 25/025 (2013.01); F25D 29/00 (2013.01); G01N 21/55 (2013.01); H05B 6/62 (2013.01); F25D 2400/02 (2013.01); F25D 2600/04 (2013.01); F25D 2700/121 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A refrigerator having a cooling/heating chamber capable of cooling and heating foods,
the cooling/heating chamber being divided into a heating zone that is a space where foods to be heated are placed, and a non-heating zone that is a space continuous with the heating zone where foods not to be heated are placed, the refrigerator comprising:
an oscillation electrode arranged on a ceiling part of the heating zone,
a counter electrode arranged on a bottom part of the heating zone so as to face the oscillation electrode in a top-bottom direction, and
an oscillating unit that applies an AC voltage to between the oscillation electrode and the counter electrode during execution of a zone heating operation,
wherein the cooling/heating chamber is defined by an inner case made of an insulating material, and
the oscillation electrode is outside of the inner case.