| Patent application number | Description | Published |
|---|
| 20100018246 | INTERNAL HEAT EXCHANGER ASSEMBLY - An internal heat exchanger assembly for an air conditioning system, having a housing defining a cylindrical with opposing ends. The ends are sealed with end caps having inlets/outlets. A helical coil tube is coaxially disposed within the cylindrical cavity, in which the helical coil includes two tube ends extending in opposing directions and exiting the cylindrical cavity through tube ports provided in the end caps. A twisted elongated strip is coaxially disposed within the cylindrical cavity extending from the first end to the second end. The twisted elongated strip includes a plurality of radially extending fingers adapted to engage the helical coil to maintain the helical coil in a predetermined position. | 01-28-2010 |
| 20100122793 | SECONDARY LOOP-INTEGRAL HEATER CORE AND COOLER - The assembly includes a pair of heat exchangers, each including an upper and lower manifold, parallel and spaced relative to one another. Tubes extend between each set of upper and lower manifolds with fins disposed between each of the tubes. A valve system controls fluid flow between the upper manifolds and the lower manifolds. The valve system is movable between a maximum cooling mode with fluid flow form the first upper manifold through both of the tubes and to said first lower manifold. A temperate mode allows fluid to flow from the first upper manifold to the first lower manifold and from the second upper manifold to the second lower manifold to prevent flash fogging. A maximum cooling mode allows fluid to flow from the second upper manifold through both of the first and second tubes to the lower manifolds. | 05-20-2010 |
| 20100300140 | Air Conditioning System for Cooling the Cabin of a Hybrid-Electric Vehicle - An air conditioning system for use in a hybrid-electric vehicle having an engine and a cabin. The system includes a refrigerant loop and a coolant loop. A phase change heat exchanger including a first tube in fluid communication with the refrigerant loop and a second tube in fluid communication with the coolant loop. The first and second tubes abut one another for conducting heat from the coolant in the coolant loop to the first refrigerant in the refrigerant loop when the vehicle is operating with the engine running. The phase change heat exchanger further includes a chamber abutting the first and second tubes for storing a phase change material. The phase change material conducts heat to the first refrigerant to freeze the phase change material when the vehicle is operating with the engine running and receives heat from the coolant to cool the coolant when the engine is not running. | 12-02-2010 |
| 20100313587 | Evaporator Phase Change Thermal Siphon - An air conditioning system including an evaporator having a manifold and a plurality of tubes extending downward in a vertical direction from the manifold. The evaporator defines at least one PCM tank engaging the manifold for storing a phase change material. When operating in a first operating mode, heat is transferred from the phase change material to the refrigerant to freeze and cool the phase change material. When operating in a second operating mode, heat is transferred from the refrigerant to the frozen phase change material to condense the refrigerant. The condensed refrigerant falls downwardly through the tubes and receives heat from a flow of air to cool the air and evaporate the refrigerant. The evaporated refrigerant rises upwardly back to the low pressure of the cold manifold. | 12-16-2010 |
| 20110289959 | AIR CONDITIONING SYSTEM HAVING AN IMPROVED INTERNAL HEAT EXCHANGER - An air conditioning system having an improved internal heat exchanger (IHX) assembly. The IHX assembly includes an elongated cavity for low pressure refrigerant flow from an evaporator and an interior tube disposed within the cavity for high pressure refrigerant flow from a condenser, and a pressure equalization passage between the low and high pressure sides. The passage is large enough to allow pressures to equalize between the condenser and evaporator while the air conditioning system is inactive, so as to prevent the pressure differential that would otherwise enable the loss of refrigerant oil from the compressor, and small enough not to effect the operation of the air conditioning system. The pressure equalization passage may be a by-pass valve assembly having a reed portion that is normally open when the air conditioning system is inactive and closed when the air conditioning system is active for maximum cooling efficiency. | 12-01-2011 |
