DEFROSTING DEVICE OF AIR CONDITIONER AND CONTROL METHOD THEREFOR

Title:

DEFROSTING DEVICE OF AIR CONDITIONER AND CONTROL METHOD THEREFOR

Document Type and Number:

Japanese Patent JPH1194329

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To perform a normal defrosting operation, by proceeding integration after the reserved time for judgement, when the temperature of an outdoor heat exchanger rises instantaneously to a predetermined temperature or higher by the noise component which flows in an outdoor piping temperature sensing means during the integration of the defrosting time. SOLUTION: An operation means 102 is provided with the operation mode of an air conditioner and two or more function keys which select the air volume and the predetermined temperature of the air that is discharged through a discharge opening, and also it is provided with an operation key to input the operation startup and shutdown of the air conditioner. A four-way valve driving means 128 receives a control signal which is outputted from a control means 104 to change the flow of a refrigerant according to the operation conditions that are inputted by the operation means 102, and then it performs the on/off driving control of the four-way valve. An indicating means 130 turns on or off the operation selective modes (automatic, cooling and heating, dehumidifying, air supply, etc.), that are inputted by the operation means 102, and a defrosting indication lamp which indicates defrosting operation and defrosting completion, by the control of a control means 104, so that the operation conditions of the air conditioner can be indicated.

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