Drying control apparatus and method of washing and drying machine
First Claim
1. A drying control method of a washing and drying machine, in which air in a drum is circulated so that the air sequentially passes through a tub, a condensation duct, and a heater duct, and is introduced again to the inside of the drum, and dries laundry in the drum, comprising:
- supplying cooling water for condensing moisture contained in the circulated air to the condensation duct;
measuring a temperature of the cooling water dropped from the condensation duct to the tub, or a temperature of the circulated air; and
discharging the cooling water from the tub to the outside of the tub, when the measured temperature is more than a designated temperature.
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Accused Products
Abstract
A drying control method and apparatus of a washing and drying machine, in which cooling water dropped from a condensation duct to a tub accelerates the condensation of moisture contained in circulated air so as to improve condensing capability, a cold air drying time is differently set according to load so that when the load is small, a drying time is shortened, and the drying of laundry is rapidly performed, a power consumption rate is minimized, or a cooling water consumption rate is minimized according to user'"'"'s desire, and a drying operation is controlled using a difference between a temperature of air and a temperature of cooling water so that the drying operation is efficiently performed according to load conditions so as to improve the drying capability.
71 Citations
27 Claims
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1. A drying control method of a washing and drying machine, in which air in a drum is circulated so that the air sequentially passes through a tub, a condensation duct, and a heater duct, and is introduced again to the inside of the drum, and dries laundry in the drum, comprising:
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supplying cooling water for condensing moisture contained in the circulated air to the condensation duct;
measuring a temperature of the cooling water dropped from the condensation duct to the tub, or a temperature of the circulated air; and
discharging the cooling water from the tub to the outside of the tub, when the measured temperature is more than a designated temperature. - View Dependent Claims (2, 3, 4, 5)
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6. A drying control method of a washing and drying machine comprising:
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drying laundry in a drum using hot air; and
drying the laundry in the drum using cold air after the drying of the laundry using the hot air, wherein, in the drying of the laundry using the cold air, the circulation of air is terminated when a temperature of the circulation air is less than a designated cold air drying termination temperature. - View Dependent Claims (7, 8, 9)
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10. A drying control method of a washing and drying machine, which controls a circulation fan for causing air in a drum to sequentially pass through a tub, a condensation duct, and a heater duct and to be introduced again into the drum, a cooling water valve for supplying cooling water to the condensation duct so that moisture contained in the air passing through the condensation duct is condensed by the cooling water, and a heater for heating the air passing through the heater duct, wherein:
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ON/OFF conditions of the circulation fan, the cooling water valve, and the heater are determined according to the input of kind, drying time, and dryness of laundry to be dried, and when one mode out of a rapid drying mode, a power saving mode, and a water saving mode is inputted to the washing and drying machine, the ON/OFF condition of at least one of the circulation fan, the cooling water valve, and the heater is changed according to the inputted mode. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A drying control apparatus of a washing and drying machine comprising:
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a tub having a drum installed therein for containing laundry so that the laundry is washed or dried;
a condensation duct connected to one side of the tub for eliminating moisture contained in air drying the laundry by condensation;
a heater duct connected to the upper end of the condensation duct and the other side of the tub for heating the air having passed through the condensation duct and circulating the air into the tub;
an air temperature sensor for measuring a temperature of the air dehumidified by passing through the condensation duct;
a cooling water temperature sensor installed at the lower end of the tub or at an inlet of the condensation duct for measuring the temperature of cooling water; and
control means for receiving results sensed by the air temperature sensor and the cooling water temperature sensor and controlling the drying of the laundry using a difference between the temperature of the air and the temperature of the cooling water. - View Dependent Claims (20)
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21. A drying control apparatus of a washing and drying machine, in which:
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when air drying laundry passes through a condensation duct after a drying operation for drying the laundry is started, a temperature of cooling water condensing moisture contained the air and a temperature of the air dehumidified by passing through the condensation duct are measured, and when the drying operation is continued, the dried state of the laundry is determined by a difference temperature between a signal representing characteristics of the temperature of the cooling water and a signal representing characteristics of the temperature of the air, so as to control the drying operation. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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Specification