Patent application number | Description | Published |
20120186283 | COMPRESSOR MOTOR PREHEAT CONTROL - A method of controlling a vapor cycle system having first and second compressors includes operating the first compressor to compress refrigerant while the second compressor is idle, sensing a motor temperature of the second compressor, activating a preheating mode in which the motor of the second compressor is powered to generate heat when the motor temperature of the second compressor is below a lower temperature threshold, turning off the preheating mode when the sensed motor temperature of the second compressor is above an upper temperature threshold, and limiting the maximum duration of the preheating mode to a preheating time period, such that the preheating mode is turned off after being activated for the preheating time period. | 07-26-2012 |
20120266615 | ADAPTABLE EVAPORATOR DEFROST LOGIC - Adaptable evaporator defrost logic is employed in a refrigeration system to detect a build-up of ice on the evaporator. In response to the detected build-up of ice, a defrost operation is initiated that includes decreasing the speed of the compressor. At the end of the defrost operation, the adaptable evaporator defrost logic determines whether the defrost operation was a success. If the defrost operation was a success, then normal operation is resumed. If the defrost operation was not a success, then the defrost operation is modified by turning the compressor off and extending a duration of the defrost operation. | 10-25-2012 |
20140083117 | EXDRIBUTOR VALVE FOR HEAT EXCHANGER - An exdributor valve of a heat exchanger includes a distributor formed to define an interior and configured to distribute single phase liquid refrigerant from the interior then change to a two-phase refrigerant to cooling channels of the heat exchanger and a flow modulation device. The flow modulation device is operably interposed between the interior of the distributor and the cooling channels and is configured to modulate an area through which the single phase liquid refrigerant is permitted to flow from the interior of the distributor then change to a two-phase refrigerant to equally distribute to each of the cooling channels. | 03-27-2014 |
20140196869 | PLATE HEAT EXCHANGER WITH TENSION TIES - A plate heat exchanger includes a stack of main plates having ridges and troughs to direct first and second flows of fluids through cavities between the main plates to exchange heat between the fluids while maintaining the first and second flows of fluids separate from each other. The plate heat exchanger includes a first end plate stacked at one end of the stack of main plates and a second end plate stacked at an opposite end of the main plates. Tension ties mechanically connect to each of the first and second end plates through the stack of main plates. | 07-17-2014 |
20140196870 | PLATE HEAT EXCHANGER - A plate heat exchanger includes a plurality of main plates having ridges and troughs to direct first and second flows of fluids across the main plates to exchange heat between the fluids while maintaining the first and second flows of fluids separate from each other. The heat exchanger also includes a first end plate including first and second inlets and first and second outlets. The first end plate includes a substantially flat inside surface configured to contact the ridges of a first main plate among the plurality of main plates and at least one slot formed in the substantially flat surface to provide a fluid communication of the first fluid flow between the inlet and a cavity formed by the first end plate and the first main plate. | 07-17-2014 |
20140352934 | PLATE HEAT EXCHANGER - A plate heat exchanger includes a plurality of main plates having ridges and troughs to direct first and second flows of fluids across the main plates to exchange heat between the fluids while maintaining the first and second flows of fluids separate from each other. The heat exchanger also includes a first end plate including first and second inlets and first and second outlets. The first end plate includes a substantially flat inside surface configured to contact the ridges of a first main plate among the plurality of main plates and at least one slot formed in the substantially flat surface to provide a fluid communication of the first fluid flow between the inlet and a cavity formed by the first end plate and the first main plate. | 12-04-2014 |
20140360224 | Evaporator Heat Exchanger - An evaporator heat exchanger is disclosed. The evaporator heat exchanger includes a bottom plate, a top plate, and at least one main plate between the bottom plate and the top plate. The at least one main plate includes a first face having one or more channels for flow of a first fluid along the first face and a second face opposite the first face having one or more channels for flow of a second fluid along the second face, wherein heat is exchanged between the first fluid and the second fluid through the main plate. Main plates adjacent to each other define an enclosed channel for fluid flow. | 12-11-2014 |