Wisconsin Patent of the Month – October 2021

HVAC systems circulate fluids – like refrigerants – through their closed loop. These systems control temperature and air quality in commercial and residential buildings. When a refrigerant flows through the system, it passes between an evaporator coil and absorbs heat to a condenser where it releases heat. Traditional air handling units (AHU) seen in HVAC systems use air flow monitoring features which are usually very difficult to access. Air Distribution Technologies IP, LLC is no stranger to HVAC systems as a leading provider of innovative air distribution and ventilation solutions. They have designed an AHU with a rain hood to make this access easier.

Their design adds a rain hood to the AHU which can receive air flow from around the rain hood. Along with receiving the air, the rain hood blocks the ingress of liquids and contaminants into the body of the AHU. This block is controlled by waterproofing the interior, protecting it from rain, sleet, snow, and hose directed water. A sensor positioned in the rain hood is set to monitor air flow parameters. The rain hood has an access opening which allows any maintenance worker to easily access the sensor. The rain hood offers two key advantages to the unit – greater access and greater protection from the environment. 

Are you developing new technology for an existing application? Did you know your development work could be eligible for the R&D Tax Credit and you can receive up to 14% back on your expenses? Even if your development isn’t successful your work may still qualify for R&D credits (i.e. you don’t need to have a patent to qualify). To find out more, please contact a Swanson Reed R&D Specialist today or check out our free online eligibility test.

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