Patent application number | Description | Published |
20090060759 | Compressor sound suppression - A compressor has first and second enmeshed rotors: rotating about first and second axes. The first rotor is supported by a bearing system carried by a bearing case. The bearing case has at least a first port to a discharge plenum. A first sound-absorbing material is positioned within the first port. | 03-05-2009 |
20100263391 | Control Device for HVAC Systems with Inlet and Outlet Flow Control Devices - A process for controlling operation of a heating, ventilation and air conditioning system broadly comprises providing a heating, ventilation and air conditioning system having an evaporator, a condenser, a compressor having an inlet and an outlet, and at least one flow control device; measuring a performance parameter of the heating, ventilation and air conditioning system; determining a performance parameter measurement of the flow indicative of onset of surge; determining a surge line of the heating, ventilation and air conditioning system based upon the performance parameter measurement; and independently controlling the at least one flow control device based upon the performance parameter to mitigate an onset of the surge. | 10-21-2010 |
20120037345 | AIR TREATMENT MODULE - An air treatment module includes an air plenum, a heat exchanger tube and a bypass duct. The bypass duct has an inlet opening in flow communication with the air plenum in juxtaposition with a selected region of the heat exchanger and an outlet opening in flow communication with a zone of lower air pressure. The presence of the bypass duct improves air flow over the heat exchanger tube in the selected region. | 02-16-2012 |
20120090600 | INDUCER FAN ASSEMBLY FOR A FURNACE - An inducer fan assembly includes a flow collector piece having a motor support surface, a toroidal collector, and a discharge region extending tangentially from the collector. A fan rotor is rotatably mounted relative to the motor support surface. The fan rotor includes a hub surface, and an outer circumferential edge. The fan rotor further includes a plurality of blades that extend from the hub surface. The plurality of blades extend from a leading edge to a trailing edge that extends beyond the outer circumferential edge. The plurality of blades include a first height and a second height that define a blade tip revolved contour. The collector is arranged radially outward from and axially off-set from the hub surface. An inlet casing piece is mounted to the flow collector piece. The inlet casing piece includes a contour that is substantially similar to the blade tip revolved contour of the fan rotor. | 04-19-2012 |
20140124166 | COMPRESSOR CRANK CASE HEATER ENERGY REDUCTION - A method of operating an air conditioning system includes cooling a selected space with the air conditioning system. The air conditioning system includes two or more compressors and two or more crank case heaters. Each crank case heater of the two or more crank case heaters is associated with a compressor of the two or more compressors. Operation of the two or more compressors is stopped, thus initiating operation of the two or more crank case heaters. The air conditioning system is switched to a conservation mode, including de-powering at least one compressor of the two or more compressors and an associated at least one crank case heater or the two or more crank case heaters thereby reducing energy consumption of the two or more crank case heaters. | 05-08-2014 |