Lennox Industries Inc.

Rajesh Alayil

Henry Greist

Sanjeev Hingorani

Thomas Wolowicz

Surendran Ramasamy

A refrigeration system includes a tubing system, a sensor circuitry, a fan, and a controller. The tubing system has tubes located adjacent to component of the refrigeration system. The tubes have holes on their surface. The fan is downstream of the tubes. The fan pulls sampled air though the tubes and direct the sampled air toward the sensor circuitry. The controller receives a signal that indicates that the sampled air comprises a mixture of air and refrigerant particles. In response to receiving the signal, the controller determines that there is refrigerant leakage from at least one of the one or more components and triggers a mitigation plan associated with the refrigerant leakage.

Refrigerant leak detection system and method

A heating, ventilating, and air conditioning (HVAC) system includes at least one indoor air quality monitor. The indoor air quality monitor is formed with an arrangement of chambers—intake chamber, low-flow chamber, and outlet chamber—such that a particulate sensor on an interior and another air quality sensor are neither overwhelmed nor underwhelmed by air flow to the sensors. The indoor air quality monitor may be arranged for attaching to a surface in a conditioned space for sampling air therein or may include a bypass chamber that fluidly couples to an HVAC duct.

Indoor air quality monitors for HVAC systems

An indoor air quality monitor for an HVAC system includes a monitor body formed with a plurality of chambers defined at least in part by chamber walls. A bypass chamber allows for a majority of airflow entering the monitor to pass through. An intake chamber coupled to the bypass chamber allows for a portion of air to be removed for sampling by a particulate sensor. Air from the particulate sensor is discharged to an outlet chamber that is fluidly coupled to a downstream portion of the bypass chamber. The fluid requirements of the particulate sensor are maintained without overwhelming or underwhelming the particulate sensor.

Indoor air quality monitors for commercial HVAC systems

In one instance, a heat sink for thermal management of an electronic component includes a top plate and a base plate that is displaced from the top plate when in an assembled position. The base plate has a first side and a second side, and the second side is for thermally coupling to the electronic component. The heat sink also includes a plurality of fins each including a flat member formed with a plurality of pin apertures and a plurality of fastener apertures. A plurality of pins is disposed through the plurality of pin apertures. The members of the plurality of fins are spaced from one another. The top plate is coupled to a first end of the plurality of pins, and the base plate is coupled to a second end of the plurality of pins to form a secure structure. Other heat sinks are presented.

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Kerala, India

Rajesh Alayil