Patent ID: 11913695
Assignee: B MEDICAL SYSTEMS S.A.R.L.
Field: Other consumer goods (Other fields)
Classification: CPC F | IPC F

Claim 15:
16. An ice-lined vaccine refrigerator comprising:
a vaccine storage compartment;
an electrically powered cooling circuit, the electrically powered cooling circuit which generates an ice-lining and cools the vaccine storage compartment;
an AC power inlet connected to an external supply of AC power; and
a compressor forming part of the electrically powered cooling circuit, the compressor being powered by the external supply of AC power through the AC power inlet;
in which:
the compressor is a DC powered compressor;
the ice-lined refrigerator comprises an AC/DC convertor which converts AC power received at the AC power inlet to DC power which powers the compressor;
the AC/DC convertor comprises a transformer which reduce the voltage of the AC power received at the AC power inlet and a rectifier which converts the AC power to DC power;
the ice-lined vaccine refrigerator further comprises an overvoltage protection relay arranged between i) the AC power inlet and ii) the transformer and rectifier, the overvoltage protection relay being configured to disconnect the transformer and rectifier from the supply voltage in the case of the supply voltage exceeding an upper cut-out voltage;
the compressor and the AC/DC converter are configured such that the compressor is operable when the external supply of AC power 1 s anywhere within the range of 90 V to 280 V and 50-Hz;
the external supply of AC power is an electrical grid electricity supply provide to the AC power inlet without passing through a voltage stabilizer; and
the electrical grid electricity supply is the only power source used to power the DC powered compressor of the electrically powered cooling circuit.