Lennox Industries Inc.

Heatcraft Refrigeration Products LLC

Surendran Ramasamy

Stephen J Vendt

Melissa Del Carmen Amoros Sol

Arun Kunasekaran

Raviganesh Thirumalaisamy

Aravind Sridharan

Sanjeev Hingorani

Melissa Amoros

Bruce K Lee

Shashwat Nath

Mohan Renganathan

Michael Krasnicki

Henry Greist

Steve Lazar

Gary C Jones

Thomas Wolowicz

Chera Selvan Neelagantan

Rajesh Alayil

Calvin Michaelis

Chera Selvan

Harsh Patel

A controller is configured to operate a heating, ventilation, and air conditioning (HVAC) system based on a first plurality of particulate matter measurements and a second plurality of particulate matter measurements. The controller is configured to determine an air filter efficiency for an air filter based on the received first plurality of particulate matter measurements and the received second plurality of particulate matter measurements. The controller is further configured to determine if a quantity of particulate matter in an airflow exceeds a first threshold value based on the received second plurality of particulate matter measurements. In response to determining that the quantity of particulate matter in the airflow does exceed the first threshold value, the controller is configured to transmit a notification indicating an action to inspect the air filter.

System and method of operating an HVAC system based on particulate matter and air filter efficiency

An air quality measuring device that includes a first chamber, a second chamber, a third chamber, and a fourth chamber. The first chamber includes a first inlet configured to receive a first airflow, a first outlet configured to receive a first portion of the first airflow, and a second outlet configured to receive a second portion of the first airflow. The second chamber includes a second inlet configured to receive the first portion of the first airflow and a first sensor disposed within the second chamber. The third chamber includes a third inlet configured to receive the second portion of the first airflow and a second sensor disposed within the third chamber. The fourth chamber includes a fourth inlet configured to receive the second portion of the first airflow and a third sensor disposed within the fourth chamber.

Measuring indoor air quality for a heating, ventilation, and air conditioning system

An HVAC thermostat assembly has a wall-plate connector that includes a wall-plate and wire connectors as a whole that allows for a thinner, more aesthetic design. In one instance, the HVAC thermostat includes a display unit with a wall-plate connector recess having a plurality of electrical connector pins extending outward to mate with a wall-plate connector. The wall-plate connector includes a wall plate with incorporated electrical terminals. Other assemblies and systems are disclosed.

HVAC thermostat assembly and wall-plate connector

Wireless extender housing

HVAC sensor for wall mounting

HVAC thermostat

Surface-supported, HVAC sensor

Controller housing

HVAC controller housing

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.

Fin-and-pin heatsinks and methods

Refrigeration controller housing

Refrigeration control device

An edge trim for display cases, and methods for making edge trim, are described. Instead of using tape or an adhesive to attach trim to the outer rims of end panels, a shape pattern is created in an extruded trim piece. Then polyurethane liquid can be added to the interior of the panel so that it also fills in the shape pattern. When the polyurethane solidifies into foam it will create a tight bond between the panels and the trim pieces.

Snap-in edge trim design for end panels

A refrigerated display case. The refrigerated display case may include a number of shelf standards and an inside back panel attached to the shelf standards. The inside back panel may include a number of vertically stacked inside back panel sections that are individually removable from the remaining sections.

Refrigerated display case

Growing community of inventors

Tamil Nadu, India

Surendran Ramasamy