Contamination sensor, air purifier having the same and control method thereof
First Claim
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1. An air purifier, comprising:
- a main body including an inlet configured to receive air and a discharger configured to discharge the air;
a filter disposed within the main body and configured to purify contaminants from the air; and
a contamination sensor disposed adjacent to the filter, wherein the contamination sensor integrally comprises a light emitter configured to emit a light toward the filter and a light receiver configured to receive the light emitted from the light emitter;
a controller configured to receive a received amount of light at the light receiver and determine a contamination level as a function of a use time of the filter and the amount of light received at the light receiver; and
a contamination checker connected to the controller to allow a user to check the contamination level.
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Abstract
An air purifier includes a main body having an inlet configured to receive air and a discharger configured to discharge the air. The air purifier also includes a filter disposed within the main body and configure to purify contaminates from the air. The air purifier also includes a contamination sensor disposed adjacent to the filter and integrally includes a light emitter configured to emit a light toward the filter and a light receiver configured to receive the light emitted from the light emitter.
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Citations
19 Claims
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1. An air purifier, comprising:
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a main body including an inlet configured to receive air and a discharger configured to discharge the air; a filter disposed within the main body and configured to purify contaminants from the air; and a contamination sensor disposed adjacent to the filter, wherein the contamination sensor integrally comprises a light emitter configured to emit a light toward the filter and a light receiver configured to receive the light emitted from the light emitter; a controller configured to receive a received amount of light at the light receiver and determine a contamination level as a function of a use time of the filter and the amount of light received at the light receiver; and a contamination checker connected to the controller to allow a user to check the contamination level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method implemented using an air purifier, the method comprising:
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mounting a filter to the air purifier; adjusting a light emitter and a light receiver of a contamination sensor according to the filter; counting a use time of the filter; and measuring a contamination level of the filter, wherein measuring the contamination level of the filter comprises dividing the contamination level of the filter into at least two or more stages as a function of the use time of the filter and an amount of light received at the light receiver. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification