Hand Dryer with Point of Ingress Dependent Air Delay and Filter Sensor
First Claim
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1. A hand dryer comprising:
- first and second proximity sensors operative to detect presentment of an object for drying; and
a controller communicatively linked to the first and second proximity sensors, and wherein the controller commences activation of a drying operation after a first delay period if the first proximity sensor first detects the object for drying and commences activation of a drying operation after a second delay period if the second proximity sensor first detects the object for drying.
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Abstract
A lavatory system includes a hand dryer with at least a first proximity sensor and a second proximity sensor to detect an object for drying. A controller is communicatively linked to the first and second proximity sensors. The controller activates a drying operation after a first delay period if the first proximity sensor first detects the object for drying and activates a drying operation after a second delay period if the second proximity sensor first detects the object for drying. A filter flow sensor may also be provided to ensure proper filtering of the dryer'"'"'s air.
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Citations
20 Claims
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1. A hand dryer comprising:
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first and second proximity sensors operative to detect presentment of an object for drying; and a controller communicatively linked to the first and second proximity sensors, and wherein the controller commences activation of a drying operation after a first delay period if the first proximity sensor first detects the object for drying and commences activation of a drying operation after a second delay period if the second proximity sensor first detects the object for drying. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A lavatory system comprising:
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a wash basin; a faucet operably connected to the wash basin; a hand dryer in fluid communication with the wash basin and including a hand-receiving cavity, a top portion with an air outlet, and a bottom portion with an air outlet, the hand-receiving having first and second points of entry; a blower motor in fluid communication with the air outlets for blowing air through the air outlets; and a controller that activates the blower motor after observance of a first delay period if an object to be dried is presented to the hand-receiving cavity at the first point of entry and activates the blower motor after observance of a second delay period if an object to be dried is presented to the hand-receiving cavity at the second point of entry. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A hand dryer comprising:
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a fan that generates a flow of drying air to be delivered to a drying cavity; a motor that drives rotation of the fan, the motor having an air intake; an intake cavity open to atmosphere and flow coupled to the air intake of the motor; an air filter disposed in the intake cavity; and an air filter sensor operative to measure air flow through the filter.
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15. A method of supplying drying air to drying chamber having first and second points of ingress, comprising:
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iteratively scanning a first detection zone including the first point of ingress; iteratively scanning a second detection zone including the second point of ingress; supplying air with a first delay if an object is detected in the first detection zone; and supplying air with a second delay if an object is detected in the second detection zone, wherein the second delay is greater than the first delay period. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification