US 2015/0027144 A1 · AIR CONDITIONER AND CONTROL METHOD THEREOF

Abstract

An air conditioner, having an outdoor unit and an indoor unit, to perform a heating operation and a defrosting operation, the air conditioner including a detection unit to detect a state of at least one selected between the outdoor unit and the indoor unit and to output the detected value, a controller to determine whether the air conditioner is in a stable state when the defrosting operation is completed and, upon determining that the air conditioner is in the stable state, to control the detected value output from the detection unit to determine entry time of the next defrosting operation, and a storage unit to store a value detected in the stable state. The entry time of the defrosting operation is accurately determined, thereby minimizing the number of times of the defrosting operation during the heating operation.

Claims31

Dependent claims

A control method of an air conditioner, having an outdoor unit and at least one indoor unit, to perform a heating operation and a defrosting operation, the control method comprising:

determining entry time of the defrosting operation during the heating operation;
upon determining that it is the entry time of the defrosting operation, performing the defrosting operation;
upon determining that the defrosting operation has been completed, determining a stable state of the air conditioner;
upon determining that the air conditioner is in the stable state, detecting a state of at least one selected between the outdoor unit and the indoor unit;
and
storing a value detected in the stable state as a stable value to determine entry time of a next defrosting operation.

3 more elements

An air conditioner, having an outdoor unit and at least one indoor unit, to perform a heating operation and a defrosting operation, the air conditioner comprising:

a detection unit to detect a state of at least one selected between the outdoor unit and the indoor unit;
a storage unit to store a value detected in a stable state as a stable value;
and
a controller to determine whether the air conditioner is in the stable state during the heating operation, upon determining that the air conditioner is in the stable state, to control the value detected by the detection unit to be stored as a stable value, to compare a value detected at a present time with the stable value stored in the storage unit to calculate a difference value therebetween, and to compare the calculated difference value with a reference value to determine whether it is the entry time of the defrosting operation.

1 more element

Dependencies are inferred from the claim text.

Air conditioner and control method thereof

Life of this patent

Air conditioner and control method thereof

Life of this patent

Abstract

Claims31