Patent application number | Description | Published |
20080245354 | Furnace with integrated blower housing and heat exchanger - A combustion furnace includes a blower housing with a centrifugal blower impeller disposed therein and plural heat exchanger tubes disposed substantially around a major portion of the periphery of the impeller. The heat exchanger tubes receive combustion gasses from plural burner nozzles and discharge combustion gasses to a plenum in communication with a motor driven inducer gas pump. The integrated blower housing and heat exchanger may be disposed in a cabinet including support structure for a fuel delivery manifold, associated burner nozzles and forming air inlet and outlet openings for air being circulated by the blower. | 10-09-2008 |
20080257336 | Furnace with Integrated Blower Housing and Heat Exchanger - A combustion furnace includes a blower housing with a centrifugal blower impeller disposed therein and plural heat exchanger tubes disposed substantially around a major portion of the periphery of the impeller. The heat exchanger tubes receive combustion gasses from plural burner nozzles and discharge combustion gasses to a plenum in communication with a motor driven inducer gas pump. The integrated blower housing and heat exchanger may be disposed in a cabinet including support structure for a fuel delivery manifold, associated burner nozzles and forming air inlet and outlet openings for air being circulated by the blower. | 10-23-2008 |
20100212876 | Heat Exchanger - A heat exchanger has a first fin having a hole, a collar attached to the first fin and associated with the hole, and a bluff body carried by the first fin. The bluff body is partially directly upstream of the collar. A heat exchanger has a fin having a hole, a collar attached to the fin and associated with the hole, and a bluff body associated with the fin. A configuration of the bluff body is associated with a fin pitch separation distance of the heat exchanger. A method of increasing a heat exchange efficiency of a heat exchanger is provided that includes passing an air flow adjacent a surface of a fin, obstructing the air flow with a bluff body, reducing a thickness of a thermal boundary layer, and locating a reduced thickness portion of the thermal boundary layer adjacent to a collar associated with the fin. | 08-26-2010 |
20100326624 | Blow Through Air Handler - An air handling unit has an enclosure, a heat exchanger disposed within the enclosure, and a heating element substantially co-located with the heat exchanger within the enclosure. An air handling unit has a cabinet with a first air opening and a second air opening. A blower is disposed within the cabinet adjacent to the first air opening and a heat exchanger is disposed within the cabinet adjacent to an air outlet of the blower unit and also adjacent to the second air opening. At least one heating element is located adjacent the heat exchanger. A method of constructing an air handling unit includes forming an air handling enclosure, mounting a blower in the air handling enclosure, mounting a heat exchanger in the air handling enclosure downstream of the blower, and mounting at least one heating element in the air handing enclosure downstream of the blower. | 12-30-2010 |
20100326643 | Plate Fin With Hybrid Hole Pattern - A fin having a leading edge, a trailing edge opposing the leading edge, and a plurality of leading holes substantially centered along a leading axis. The fin further having a plurality of secondary holes substantially centered along a secondary axis, the secondary axis being substantially parallel to the leading axis and located between the leading axis and the trailing edge, the plurality of secondary holes being located so that the plurality of leading holes and the plurality of secondary holes form a substantially rectangular matrix. The fin further having a plurality of trailing holes substantially centered along a trailing axis, the trailing axis being substantially parallel to at least one of the leading axis and the secondary axis and located between the secondary axis and the trailing edge, each of the plurality of trailing holes being substantially equidistant from the respective two nearest secondary holes. | 12-30-2010 |
20110036551 | Louvered Plate Fin - A fin has a substantially flat base plane with a first side facing a first direction and a second side facing a second direction. The fin also has a first louver with a leading edge closer to the base plane and a trailing edge offset from the base plane in the first direction, a second louver located at least partially downstream of the first louver, with a leading edge offset from the base plane in the second direction and a trailing edge offset from the base plane in the first direction, and a third louver located at least partially downstream of the second louver, the third louver having a leading edge offset from the base plane in the second direction and a trailing edge closer to the base plane than the third louver leading edge. | 02-17-2011 |
20110296856 | CONDENSING UNIT DESUPERHEATER - A condensing unit has a fan selectively operable to draw air through the condensing unit along an airflow path, a first row of condenser tubes disposed along the airflow path, and a second row of desuperheater tubes disposed along the airflow path downstream relative to the first row of condenser tubes. A condensing unit has an airflow path, a desuperheater heat exchanger disposed along the airflow path, and a condenser heat exchanger disposed along the airflow path. A method of desuperheating a refrigerant includes causing air having a first air temperature to encounter a condenser tube comprising refrigerant having a first refrigerant temperature, raising the temperature of the air to a second air temperature, and causing the air having the second air temperature to encounter a desuperheater tube comprising refrigerant having a second refrigerant temperature higher than the first refrigerant temperature. | 12-08-2011 |
20130092355 | Heat Exchanger With Subcooling Circuit - An air handling unit has a blower configured to selectively move air from an air inlet of the air handling unit to an air outlet of the air handling unit along an airflow direction extending from the blower to the air outlet, a heat exchanger disposed within the air handling unit between the inlet and the outlet, the heat exchanger has a thermal conductor, an evaporator tube thermally conductively joined to the thermal conductor, and a subcooler tube thermally conductively joined to the thermal conductor. An expansion device provides fluid communication between the evaporator tube and the subcooler tube and a drain pan disposed within the air handling unit upstream relative to the at least one subcooler tube and positioned in a geometrical footprint of at least a portion of the drain pan as the drain pan is viewed from an upstream position in the airflow direction. | 04-18-2013 |
20130142615 | Blower Housing - A blower housing has a discharge direction, an axis of rotation, a polar axis that intersects the axis of rotation and is substantially perpendicular to the discharge direction, an angular sweep of increasing fluid flow area, and an axial contraction located at an angularly greater value than the angular sweep. | 06-06-2013 |
20130343865 | Blower Housing - A blower housing has a discharge direction, an axis of rotation, a polar axis that intersects the axis of rotation and is substantially perpendicular to the discharge direction, and an angular sweep of increasing fluid flow area. The fluid flow area, A, increases with increasing angular magnitude, Φ, as a function comprising at least a functional component that is at least one of (1) equal to, (2) substantially mathematically reducible to, and (3) substantially mathematically analogous to the equation, | 12-26-2013 |
20150252817 | Blower Housing - A blower housing has a discharge direction, an axis of rotation, a polar axis that intersects the axis of rotation and is substantially perpendicular to the discharge direction, and an angular sweep of increasing fluid flow area. The fluid flow area, A, increases with increasing angular magnitude, Φ, as a function comprising at least a functional component that is at least one of (1) equal to, (2) substantially mathematically reducible to, and (3) substantially mathematically analogous to the equation, | 09-10-2015 |
Patent application number | Description | Published |
20140033743 | Combined Heat and Power Heat Pump - A method of operating a heating, ventilation, and/or air conditioning (HVAC) system includes operating a device to produce at least one of electricity and rejected heat and at least one of (1) powering a component of the HVAC system using the electricity produced by the electricity generating device and (2) heating the refrigerant of the HVAC system using at least a portion of the rejected heat. | 02-06-2014 |
20150075761 | HEAT SINK ATTACHMENT TO TUBE - An exemplary heat sink includes a tube having a tube radius and first and second heat sink portions. Each heat sink portion includes an arcuate channel having a channel radius and a channel depth. Each channel radius is greater than the tube radius, and the sum of the channel depths is less than twice the tube radius. The heat sink is assembled by positioning the tube between the first and second heat sink portions, and urging the first and second heat sink portions toward one another, thereby deforming the tube. | 03-19-2015 |
20150159927 | Reduced Power Heat Pump Starting Procedure - Systems and methods are disclosed that may include providing an auxiliary power source in an HVAC system, establishing a stable, uninterrupted power source to at least one system controller, starting a first component of the HVAC system prior to starting a second component of the HVAC system. The total power requirement necessary to simultaneously start the first component and the second component may generally exceed the power output capacity of the auxiliary power source. | 06-11-2015 |
20150159928 | Heat Pump with Exhaust Heat Reclaim - An exhaust heat reclaim system may include a diverter valve selectively connected in fluid communication to an exhaust vent tube and an exhaust delivery tube and configured to selectively divert hot exhaust fluid discharged from an exhaust of a power generation device to at least one of the exhaust vent tube and the exhaust delivery tube. The exhaust heat reclaim system may be a component of an HVAC system and be configured to discharge hot exhaust fluid onto a heat exchanger of the HVAC system, where the heat exchanger may be configured to promote heat transfer between the hot exhaust fluid and a refrigerant flowing through the heat exchanger of the HVAC system. | 06-11-2015 |
20150159929 | Micro-Combined Heat and Power Heat Pump Defrost Procedure - Systems and methods are disclosed that may include recovering heat from a generator to defrost the heat exchanger by passing a heat transfer fluid from the generator through a recovery heat exchanger that is configured to promote heat transfer between the heat transfer fluid and a refrigerant flowing therethrough, reducing a restriction of the refrigerant, reducing an airflow through the heat exchanger, and delivering the heated refrigerant to the heat exchanger. Systems and methods may also include recovering heat from an exhaust of the generator to deter the formation of frozen condensate on the outdoor heat exchanger by diverting at least a portion of a hot exhaust fluid discharged by the generator onto the outdoor heat exchanger. | 06-11-2015 |
20150192334 | Phase Change Compressor Cover - A phase change compressor cover may include a first layer configured to provide sound attenuation from undesirable noise produced as a result of operating a compressor and/or thermal isolation of the compressor and a second layer comprising a cavity filled with a phase change material that is configured to absorb heat discharged as a result of operating the compressor and subsequently discharge the absorbed heat onto the compressor in response to discontinuing operation of the compressor to keep the compressor warm and prevent refrigerant migration to the compressor. The phase change compressor cover may be used to substantially envelope the compressor in a heat pump heating, ventilation, and/or air conditioning (HVAC) system. | 07-09-2015 |
20150192371 | Charge Tolerant Microchannel Heat Exchanger - A microchannel heat exchanger has an upper portion connected in fluid communication with an undivided header, and a lower portion connected in fluid communication with the undivided header at a location that is vertically lower on the undivided header than the upper portion. Under normal steady state operating conditions, the heat exchanger may condense a first amount of liquid phase refrigerant, wherein the first volume of liquid phase refrigerant substantially fills the lower portion, and wherein substantially none of the refrigerant is condensed into liquid phase refrigerant in the lower portion, and under abnormal steady state operating conditions, the heat exchanger may condense a second amount of liquid phase refrigerant in the upper portion, wherein an additional amount of the second amount of liquid phase refrigerant in excess of the first amount of liquid phase refrigerant is accommodated in the undivided header as opposed to further filling the lower portion. | 07-09-2015 |
20150198340 | Evaporative Subcooling - A refrigeration system comprises an indoor exchanger, an outdoor exchanger, a fluid collector configured to collect condensate from the indoor exchanger, and a fluid distributor configured to pass the condensate from the fluid collector over at least a portion of the outdoor exchanger. The outdoor exchanger comprises a main coil, and the subcooling coil. The indoor exchanger and the outdoor exchanger are operable in at least a cooling mode where the indoor coil is configured to absorb heat in the cooling mode and the outdoor coil is configured to release heat in the cooling mode. The fluid distributor may be configured to pass the condensate over at least a portion of the subcooling coil. | 07-16-2015 |
20150211765 | Method of Attaching Electrodes to Plated Thermoset Plastic Heated Blower Housing - A blower assembly of an HVAC system may include an electrically-conductive plating applied to an inner surface of a blower housing, a first electrode attached to the electrically-conductive plating at an inner wall of the blower housing via an electrically-conductive RTV silicone, and a second electrode attached to the electrically-conductive plating at an outer wall of the blower housing via an electrically-conductive RTV silicone. The first electrode may pass a current through the electrically-conductive plating of the blower housing to the second electrode that may act as an ohmic heater and provide a thermal energy discharge which may exchange heat with an airflow flowing through the blower housing as a result of operating the blower assembly. | 07-30-2015 |
20150354713 | Five-Way Heat Pump Reversing Valve - Systems and methods are disclosed which may include providing a five-way reversing valve in a heat pump HVAC system, wherein the five-way reversing valve comprises a selectively movable shuttle, a first high pressure inlet port, a second high pressure inlet port, a first variable port, a first outlet port, and a second variable port, and wherein the five-way reversible valve is configured to selectively alter a flowpath of refrigerant through the reversing valve between a first operational position associated with a cooling mode and a second operational position associated with a heating mode. The five-way reversing valve may also be configured to remove a component from the refrigerant fluid circuit when configured for operation in one of its two modes of operation. | 12-10-2015 |
20150354862 | Heat Pump Desuperheater and Charge Robber - Systems and methods are disclosed which may include providing a desuperheater/charge robber (DSHCR) system in a heating, ventilation, and/or air-conditioning (HVAC) system, wherein the DSHCR system is configured to selectively allow a flow of refrigerant through a desuperheater heat exchanger when the HVAC system is operated in a cooling mode and selectively prevent the flow of refrigerant through the desuperheater heat exchanger from a refrigerant fluid circuit when the HVAC system is operated in a heating mode. The desuperheater heat exchanger may also be configured to function as a charge robber and store at least a portion of the refrigerant when the HVAC system is operated in the heating mode. | 12-10-2015 |