Method for diagnosing a single-flow or dual-flow ventilation unit and associated ventilation unit
First Claim
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1. Diagnostic method for a ventilation unit comprising at least a blower, a discharge conduit, a system of conduits comprising at least two conduits each comprising at least one extraction and/or intake air vent, at least one damper positioned in each conduit, a control unit adapted for controlling said damper, wherein the diagnostic method is carried out in at least one conduit and comprises the following steps:
- step A;
providing at least one measuring device designed to measure the intake and outlet airflow from the damper in each conduit, said measuring device being controlled by the control unit,step B;
blocking off the vents of the conduit to be tested,step C;
turning on the blower at a determined operating pressure,step D;
measuring the airflow of the conduit by means of the measuring device,step E;
determining the actual load loss of the damper,step F;
determining the actual pressure of the conduit by subtracting the actual load loss of the damper from the determined operating pressure applied at the blower,step G;
determining the leakage flow rate value of the conduit based on the actual pressure of the conduit determined in step F and from the airflow of the conduit measured in step D.
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Abstract
A method for diagnosing a single flow or dual flow ventilation unit, the method making it possible to diagnose the permeability and installation of each conduit of the ventilation unit by means of measuring devices and a control unit.
11 Citations
10 Claims
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1. Diagnostic method for a ventilation unit comprising at least a blower, a discharge conduit, a system of conduits comprising at least two conduits each comprising at least one extraction and/or intake air vent, at least one damper positioned in each conduit, a control unit adapted for controlling said damper, wherein the diagnostic method is carried out in at least one conduit and comprises the following steps:
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step A;
providing at least one measuring device designed to measure the intake and outlet airflow from the damper in each conduit, said measuring device being controlled by the control unit,step B;
blocking off the vents of the conduit to be tested,step C;
turning on the blower at a determined operating pressure,step D;
measuring the airflow of the conduit by means of the measuring device,step E;
determining the actual load loss of the damper,step F;
determining the actual pressure of the conduit by subtracting the actual load loss of the damper from the determined operating pressure applied at the blower,step G;
determining the leakage flow rate value of the conduit based on the actual pressure of the conduit determined in step F and from the airflow of the conduit measured in step D. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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- 8. Ventilation unit comprising at least a blower, a discharge conduit, a system of conduits comprising at least two conduits, each comprising at least one air extraction and/or intake vent, at least one damper positioned in each conduit, a control unit adapted for controlling said damper, characterized in that the ventilation unit comprises at least one measuring device designed to measure the air intake or outlet flow rate of the damper of each conduit, said measuring device being controlled by the control unit.
Specification