Backpack for e.g. hospital, has semi-circular top part and quadrangular bottom part that forms isothermal chamber in which refrigerant cartridge is provided, where bottom part has blower circulating fluid air in refrigerated compartment

摘要

The backpack has a semi-circular top part (1) formed by fabric material and impermeable fine foam. A quadrangular bottom part (2) forms an isothermal chamber in which a refrigerant cartridge is provided. The cartridge is frozen for 24 hours and gives fresh air for a time duration of 20 hours between - 29 and + 7.5 degrees. A 12 volts battery is placed in a rectangular case. The chamber has a blower circulating fluid air in a refrigerated compartment. The blower is fed by a 12 volts energy source passing via a universal starter type electronic device. A push button (3) triggers the source.