Hvac monitoring apparatus and method
AssigneeSobie Systems Inc.
InventorSobhan ETEMADI
Life of this patent
Estimating the term…
Abstract
The invention relates to an HVAC monitoring apparatus. The HVAC monitoring apparatus monitors the carbon monoxide, pressure, and temperature inside the air duct network of an HVAC system, directly above the furnace. The apparatus can send detailed information wirelessly through the cloud.
Claims20
An apparatus for monitoring a HVAC system from a plenum of the HVAC system in which airflow generated by the HVAC system travels through, the apparatus comprising:
- a control module with an air inlet opening formed thereon, the control module coupled to an exterior surface of the plenum, so as to expose the air inlet opening to ambient air outside of the plenum;
- a probe assembly with an internal cavity, the probe assembly coupled to the control module and extending therefrom into the plenum so that the probe assembly is at least partially in a path of the airflow, wherein the internal cavity is in fluid communication with the air inlet opening;
- at least one sensing element is arranged within the probe assembly for monitoring at least one aspect of the HVAC airflow;
- and
- an air displacement means in fluid communication with the internal cavity;
- wherein the air displacement means is configured to displace air inside the internal cavity.
The apparatus of claim 10, wherein the internal cavity is configured so that the air drawn into the internal cavity removes heat within proximity of the CO sensor.
A method of determining a change in air pressure by a HVAC monitoring apparatus, the method comprising:
- detecting a ambient air pressure outside of a HVAC plenum by a first differential air pressure sensor terminal;
- detecting a HVAC airflow pressure inside the HVAC plenum by a second differential air pressure sensor terminal;
- determining a pressure difference value between the detected ambient air pressure and the detected HVAC airflow pressure;
- storing the pressure difference value;
- continually determining a recent pressure difference value between the ambient air pressure outside the HVAC plenum and the airflow pressure inside the plenum;
- determining a change in air pressure by comparing the recent pressure difference value against the stored pressure difference value.
A method of providing audio warning for a HVAC system, the method comprising:
- generating a audio warning signal from an audio module arranged in a HVAC monitoring apparatus;
- directing the audio warning signal into a plenum of the HVAC system;
- propagating the audio warning signal through an air duct network, the air duct network is in fluid communication with the plenum.
Dependencies are inferred from the claim text.