Patent application number | Description | Published |
20110139859 | METHOD FOR REMOVING BRAZING RESIDUES FROM ALUMINUM ARTICLES - In a method of preparing an aluminum surface, flux is applied to the aluminum surface and the aluminum surface is brazed. Residual flux and metal oxides are removed from the aluminum surface using an aqueous fluid having a pH between about 5 and about 9. | 06-16-2011 |
20120227945 | FREE-DRAINING FINNED SURFACE ARCHITECTURE FOR HEAT EXCHANGER - A free-draining heat exchanger includes a first heat exchange tube, a second heat exchange tube spaced from and generally parallel to the first heat exchange tube, and a fin contacting the first and second heat exchange tubes. The fin includes a louver and at least one drainage enhancement feature for promoting removal of liquid from external surfaces of the heat exchanger. A free-draining fin structure includes an array of fins disposed between adjacent heat exchange tubes for improving water drainage by reducing liquid surface tension. Each fin in the array includes an opening and a louver for directing airflow through the opening and around the fin and at least one drainage enhancement feature. | 09-13-2012 |
20130153174 | MICROCHANNEL HEAT EXCHANGER FIN - A heat exchanger includes a plurality of tubes ( | 06-20-2013 |
20140048237 | SHELL AND TUBE HEAT EXCHANGER - A heat exchanger is provided and includes a shell extending between opposing tube sheets to define an interior, nozzles coupled to the shell by which a first fluid is communicated with the interior and a tubular body extending between the opposing tube sheets to transmit a second fluid through the interior whereby heat transfer occurs between the first and second fluids along a heat transfer portion of the tubular body defined from respective planes of opposing faces of the opposing tube sheets, the heat transfer portion having at least first and second topologies at first and second sections thereof, respectively, which are respectively disposed proximate to the respective planes of the opposing faces of the opposing tube sheets. | 02-20-2014 |
20140124171 | MICRO-PORT SHELL AND TUBE HEAT EXCHANGER - A heat exchanger adapted to transmit a first fluid through an interior, having a tubular body receptive of a second fluid, whereby heat transfer occurs between the fluids is provided, the tubular body extending longitudinally through the interior, having a non-circular cross-section, and being formed to define microchannels extending longitudinally along the tubular body through which the second fluid is transmitted. | 05-08-2014 |
20140311182 | EVAPORATOR - A falling film evaporator for a heating ventilation and air conditioning (HVAC) system includes an evaporator housing and a plurality of evaporator tubes located in the evaporator housing and arranged into one or more tube bundles. A volume of thermal energy transfer medium is flowed through the plurality of evaporator tubes. One or more support sheets located along a length of the plurality of evaporator tubes to position and support the plurality of evaporator tubes in the housing, the one or more support sheets including one or more vapor flow passages to allow flow of vapor refrigerant along a length of the evaporator. | 10-23-2014 |
20140311721 | SHELL AND TUBE HEAT EXCHANGER - A shell and tube heat exchanger includes a shell having an inner surface that defines a heat exchange zone, a refrigerant pool zone is arranged in the heat exchange zone, and a plurality of tube bundles are arranged in the heat exchange zone above the refrigerant pool zone. The tube bundles include first and second wall members that define a tube channel, and a plurality of tubes arranged in the tube channel. Each of the first and second wall members have a first end that extends to a second end that is spaced from the refrigerant pool zone. The plurality of tube bundles is spaced one from another so as to define one or more vapor passages. A refrigerant distributor is positioned above the tube channel. The refrigerant distributor is configured and disposed to deliver a refrigerant onto the plurality or tubes toward the refrigerant pool zone. | 10-23-2014 |
20150316325 | LOW PRESSURE CHILLER - A heating, ventilation and air conditioning (HVAC) system includes a condenser to condense a flow of refrigerant into a liquid state. The system further includes an economizer assembly having at least one separator chamber to separate liquid refrigerant from vapor refrigerant. The economizer assembly shares an upper common wall with at least a portion of the condenser and the flow of refrigerant from the condenser into the economizer assembly proceeds through a flow opening in the upper common wall. A falling film evaporator exchanges thermal energy between the liquid refrigerant and a medium flowed through a plurality of evaporator tubes in the evaporator. | 11-05-2015 |