Why does compression generate overheat protection

Working principle and classification of overload protector the overload protector of compressor used in air conditioning is generally a jump bimetal protector, by heating wire, bimetal and two static contact circuit, in series in the compressor circuit.

When the current in the circuit is too large, the heating wire is hot, and the baking dish bimetallic sheet is baked. When the bimetallic sheet is hot, it arches in the opposite direction, thus disconnecting the contact. When the compressor shell or motor temperature is too high, even if the working current is normal, heating wire heat is very small.

The bimetal sheet also bends upward, disengaging from the two static contacts and cutting off the circuit. This protector can be automatically reset, with over - current, over - temperature dual protection.