Method and device for detecting the state of an air filter in a heating and/or air-conditioning installation of an automobile
First Claim
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1. A method of detecting the state of an air filter in a ventilation system of a passenger compartment of an automobile, comprising:
- putting the system into a given mode of ventilation;
measuring a value of a parameter of a flow of air emitted by a ventilator nozzle located in the passenger compartment; and
comparing the measured value with a reference value to determine whether the filter needs replacing.
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Abstract
The invention provides a method and device for detecting the state of an air filter in a ventilation system of the passenger compartment of an automobile vehicle. The installation is put into operation in a given mode and a parameter of an air flow emitted into the passenger compartment by an air nozzle of the installation is measured by means of a measurement device filled with a collector. The measured value of the parameter is then compared with a reference value, to determine whether or not the filter needs to be replaced.
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Citations
24 Claims
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1. A method of detecting the state of an air filter in a ventilation system of a passenger compartment of an automobile, comprising:
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putting the system into a given mode of ventilation; measuring a value of a parameter of a flow of air emitted by a ventilator nozzle located in the passenger compartment; and comparing the measured value with a reference value to determine whether the filter needs replacing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device for detecting the state of an air filter in an automobile ventilation system of a passenger compartment, comprising:
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an air flow collector adapted for application to a ventilator nozzle located in the passenger compartment; and a measurement device connected to the air flow collector and adapted to measure a value of a parameter representative of an air flow. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A device for detecting the state of an air filter in an automobile ventilation system of a passenger compartment, comprising:
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an air flow collector, the air flow collector having an input and an output, the input being adapted to collect an air flow form a ventilator nozzle located in the passenger compartment; and a measurement device to measure a value of an air flow parameter of the ventilation system, the measurement device being adapted to connect to the output of the air flow collector wherein the measured value is compared to a reference value to determine the state of the air filter.
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24. A device for detecting the state of an air filter in an automobile ventilation system of a passenger compartment, comprising:
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means for collecting a flow of air form a ventilator nozzle located in the passenger compartment; means for measuring a value of a parameter of the flow of air; and means for comparing the value measured with a reference value to determine the state of the air filter.
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Specification