Abstract: The container for use in the transporation of fresh provisions comprises a storage chamber for containing perishable foods and a machine room divided from each other by partition walls, main cold air flow channels opened at one end on the side of a door and auxiliary cold air flow channels closed at the other end on the side of the door, both of which are respectively disposed to the surface of the bottom wall, top wall or one side wall of the storage chamber, apparatus for blowing cold airs having ports perforated substantially over the entire region at the surface of the auxiliary cold air flow channels on the side of the storage chamber, apparatus disposed within the machine room for controlling the temperature of the recycled cold airs from the storage chamber and then supplying them by way of the main cold air flow channels to the inside of the storage chamber, and apparatus disopsed within the machine room for pressurizing the circulated cold airs from the storage chamber and then feeding them by way of

Abstract: A humidifier is provided for a closed defrosting cabinet for containing frozen food to be defrosted in a compartment thereof. A fan for circulating air is disposed in the defrosting cabinet. The defrosting chamber is humidified with humidified air circulated by the fan. The defrosting chamber is partitioned into a plurality of areas by a slidable partition wall consisting of at least two sections. The defrosting cabinet can maintain the temperature and the humidity constant, defrost the food rapidly, and prevent the surface of the food from drying and changing in color.

Abstract: A cooking utensil for heating by electromagnetic induction comprises an aluminum or aluminum alloy vessel having at its bottom a spray coated layer of iron and a spray coated layer of aluminum or an aluminum alloy covering the iron layer.

Abstract: Herein disclosed is an air cleaner comprising: means defining an air passage, a plurality of corona discharge electrodes and a coupling discharge electrode arranged upstream of an air passage, being connected to a high voltage source for effecting a corona discharge downstream of the air passage for collecting the air-borne dust which has been charged by the corona discharge. The coupling discharge electrode is formed as a plate with a number of circular apertures therein, and each of the discharge electrodes has a multiplicity of leading ends shaped as sharp points arranged at the respective centers of the circular apertures and terminating generally on the plane thereof. The velocity of the air flow is increased in passage through the apertures to prevent the air cleaner from getting clogged.