Oven and method for controlling the same
First Claim
1. An oven comprising:
- a heater arranged in a cooking compartment;
a temperature sensor to sense a temperature of the cooking compartment for a plurality of preset periods of time; and
a controller configured to;
calculate a plurality of increases or decreases of on/off times of the heater for at least one of the plurality of preset periods based on a preset target temperature, a current temperature sensed by the temperature sensor, and a previous temperature of the cooking compartment sensed by the temperature sensor, the plurality of increases or decreases of on/off times of the heater includinga first increase or decrease of the on/off times of the heater based on proportional control and a comparison between the preset target temperature and the current temperature,a second increase or decrease of the on/off times of the heater based on integral control and a comparison between the previous temperature and the current temperature, anda third increase or decrease of the on/off times of the heater based on differential control and the comparison between the previous temperature and the current temperature;
reset the on/off times of the heater by accumulating the calculated plurality of increases or decreases of the on/off times of the heater to the on/off times; and
control a driving of the heater according to the reset on/off times.
1 Assignment
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Accused Products
Abstract
An oven including a heater arranged in a cooking compartment, a temperature sensor to sense a temperature of the cooking compartment for a plurality of preset periods of time, and a controller to reset on/offtimes of the heater for at least one of the plurality of preset periods based on a preset target temperature and a current temperature and a previous temperature of the cooking compartment, sensed by the temperature sensor, and to control a driving of the heater according to the reset on/off times. By controlling the on/off times of the heater, a ripple phenomenon which occurs because the target temperature does not remain the same may be decreased. Thus, temperature differences may be reduced during cooking of food and, accordingly, cooking ability may be enhanced.
144 Citations
16 Claims
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1. An oven comprising:
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a heater arranged in a cooking compartment; a temperature sensor to sense a temperature of the cooking compartment for a plurality of preset periods of time; and a controller configured to; calculate a plurality of increases or decreases of on/off times of the heater for at least one of the plurality of preset periods based on a preset target temperature, a current temperature sensed by the temperature sensor, and a previous temperature of the cooking compartment sensed by the temperature sensor, the plurality of increases or decreases of on/off times of the heater including a first increase or decrease of the on/off times of the heater based on proportional control and a comparison between the preset target temperature and the current temperature, a second increase or decrease of the on/off times of the heater based on integral control and a comparison between the previous temperature and the current temperature, and a third increase or decrease of the on/off times of the heater based on differential control and the comparison between the previous temperature and the current temperature; reset the on/off times of the heater by accumulating the calculated plurality of increases or decreases of the on/off times of the heater to the on/off times; and control a driving of the heater according to the reset on/off times. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An oven comprising:
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a heater installed inside a cooking compartment; a temperature sensor to sense a temperature of the cooking compartment; and a controller configured to, in accordance with a target temperature of the cooking compartment input to the oven; control the heater to be turned on until the temperature of the cooking compartment reaches a preheating temperature; calculate a plurality of increases or decreases of on/off operations of the heater based on the target temperature, a current temperature of the cooking compartment sensed by the temperature sensor and that is the temperature of the cooking compartment after the temperature of the cooking compartment reaches the preheating temperature, and a previous temperature of the cooking compartment sensed by the temperature sensor and that is the temperature of the cooking compartment after the temperature of the cooking compartment reaches the preheating temperature and before the current temperature, the plurality of increases or decreases of on/off times of the heater including a first increase or decrease of the on/off times of the heater based on proportional control and a comparison between the preset target temperature and the current temperature, a second increase or decrease of the on/off times of the heater based on integral control and a comparison between the previous temperature and the current temperature, and a third increase or decrease of the on/off times of the heater based on differential control and the comparison between the previous temperature and the current temperature; reset the on/off operations of the heater by accumulating the calculated plurality of increases or decreases of the on/off operations of the heater to the on/off operations; and control the on/off operations of the heater based on the reset on/off operations. - View Dependent Claims (15, 16)
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Specification