AIR CONDITIONER
An air conditioner of variable capacity type comprises a variable-capacity compressor capable of varying capacity in two levels by switching between FULL and SAVE. The variable-capacity compressor can start operation at SAVE so as to allow the air conditioner to start operation without causing a shutdown of the variable-capacity compressor in an overloaded condition or in a low power-supply voltage environment.
1 . An air conditioner of variable capacity type which comprises a compressor capable of varying capacity in two levels by switching between full-power operation and power-saving operation and which is provided with a voltage detector, wherein
when a supply voltage is below a predetermined value, the compressor is operated at the power-saving operation.
2 . The air conditioner of claim 1 , wherein
the compressor is driven by a capacitor start and run single-phase induction motor, and
when the compressor is operated at the power-saving operation, a plurality of running capacitors are connected to each other to increase a capacitor capacity.
3 . An air conditioner of variable capacity type which comprises a compressor capable of varying capacity in two levels by switching between full-power operation and power-saving operation and which is provided with a current detector, wherein
when an operating current exceeds a predetermined value, the compressor is operated at the power-saving operation.
4 . The air conditioner of claim 3 , wherein
the compressor is driven by a capacitor start and run single-phase induction motor, and
when the compressor is operated at the power-saving operation, a plurality of running capacitors are connected to each other to increase a capacitor capacity.
5 . An air conditioner of variable capacity type which comprises a compressor capable of varying capacity in two levels by switching between full-power operation and power-saving operation and which is provided with a discharge pressure detector for the compressor, wherein
when a discharge pressure exceeds a predetermined value, the compressor is operated at the power-saving operation.
6 . The air conditioner of claim 5 , wherein
the compressor is driven by a capacitor start and run single-phase induction motor, and
when the compressor is operated at the power-saving operation, a plurality of running capacitors are connected to each other to increase a capacitor capacity.
7 . An air conditioner of variable capacity type which comprises a compressor capable of varying capacity in two levels by switching between full-power operation and power-saving operation and which is provided with a temperature detector for an outdoor heat exchanger, wherein
when a temperature of the outdoor heat exchanger exceeds a predetermined value, the compressor is operated at the power-saving operation.
8 . The air conditioner of claim 7 , wherein
the compressor is driven by a capacitor start and run single-phase induction motor, and
when the compressor is operated at the power-saving operation, a plurality of running capacitors are connected to each other to increase a capacitor capacity.
9 . An air conditioner of variable capacity type which comprises a compressor capable of varying capacity in two levels by switching between full-power operation and power-saving operation, wherein
the compressor starts operation at the power-saving operation.
10 . The air conditioner of claim 9 , wherein
the compressor is driven by a capacitor start and run single-phase induction motor, and
the compressor starts operation at the power-saving operation, and at a same time, a plurality of running capacitors are connected to each other to increase a capacitor capacity.