Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 8156751 | Control and protection system for a variable capacity compressor A system includes a power source, a compressor that operates in a reduced-capacity mode and a full-capacity mode, and an actuation assembly that modulates the compressor between the reduced-capacity mode and the full-capacity mode. A controller reduces the power sou... | 04/17/2012 |
| 8082747 | Temperature control through pulse width modulation A refrigerant compressor assembly for a refrigeration circuit controls the temperature within a temperature controlled space. The refrigerant compressor assembly includes a first unloading valve, a first valve actuator, and a first valve control system that adjusts ... | 12/27/2011 |
| 8047012 | Refrigeration system and method using multiple variable capacity devices A system and method of controlling a compressor rack having a plurality of variable capacity components is provided. A variable capacity component is selected from the plurality of variable capacity components as a designated variable capacity component. The designa... | 11/01/2011 |
| 8011199 | HVAC control using discrete-speed thermostats and run times Methods of controlling air conditioning and HVAC units using a thermostat for a discrete-speed unit that include changing speed based on how long the unit operates at a particular speed. Speed may be increased if a unit operates for longer than a predetermined time ... | 09/06/2011 |
| 7992399 | Pressure equalization component for a compressor A system to equalize pressure connected to a compressor for use in HVAC&R system is provided. The system includes a component in fluid communication between a high pressure side and an intermediate pressure side of the compressor. The component is configured to perm... | 08/09/2011 |
| 7984617 | Method of controlling compressor for refrigerator and apparatus thereof A method of controlling compressor for refrigerator and apparatus thereof are disclosed to control an operation of the compressor by optimum efficiency by changing freezing capacity of the compressor. The apparatus controls a rotation direction of the compressor ins... | 07/26/2011 |
| 7921661 | Dehumidification system with multiple condensers and compound compressor A refrigerant cycle is provided with a multi-port compressor or compressor stages connected in series, and multiple condensers. A single evaporator communicates with the plurality of condensers. At least one of the plurality of condensers receives fully compressed r... | 04/12/2011 |
| 7905103 | Model prediction controlled refrigeration system The invention provides a refrigeration system with a compressing unit, and a method of controlling a refrigeration system. To facilitate a better control, the capacity of the compressing unit is controlled based on a predicted future cooling demand rather than an ac... | 03/15/2011 |
| 7878014 | Parallel condensing unit control system and method A refrigeration system comprises a plurality of compressors and a plurality of condensing units comprising a first condensing unit having a first control module and at least one additional condensing unit having an additional control module. Each condensing unit has... | 02/01/2011 |
| 7854138 | Method for controlling multi-unit air conditioning system A method for controlling a multi-unit air conditioning system adapted to cool or heat room spaces while passing a refrigerant in one direction or in a reverse direction is disclosed. In the method, which is applied to a multi-unit air conditioning system including a... | 12/21/2010 |
| 7775059 | Air conditioner An air conditioner includes a fixed displacement-type first compression mechanism and a variable displacement-type second compression mechanism independent from each other in a refrigeration cycle, and further includes second compression mechanism displacement contr... | 08/17/2010 |
| 7730733 | Apparatus and method of summing capacities of outdoor units in multiple air conditioner An apparatus for summing capacities of outdoor units in a multiple air conditioner comprises self-capacity storage devices mounted in outdoor units, respectively, for storing self-capacities of the outdoor units and outputting the self-capacities of the outdoor unit... | 06/08/2010 |
| 7617695 | Control method for variable capacity compressors A refrigeration system including a refrigeration circuit and a controller. The refrigeration circuit includes a plurality of variable capacity compressors arranged in parallel to compress a refrigerant. A second variable capacity compressor is started after a first ... | 11/17/2009 |
| 7555913 | Method for controlling multiple compressors according to a matrix A method for controlling multiple compressors for use in an airconditioner is disclosed. In the airconditioner having N compressors, the method sequentially and equally operates the N compressors using a two-dimensional matrix which prevents only a specific compress... | 07/07/2009 |
| 7458227 | Method of preventing rapid on/off of compressor in unitary air conditioner A method of preventing rapid on/off of a compressor in a unitary air conditioner comprises the steps of, when a unitary-capacity operation signal is inputted from a thermostat to start an outdoor unit, and a specific operation stage is continued for more than a pred... | 12/02/2008 |
| 7434414 | Refrigeration apparatus A refrigerant circuit (10) of a refrigeration apparatus is filled up with carbon dioxide as a refrigerant. In the refrigerant circuit (10), a first compressor (21) and a second compressor (22) are arranged in parallel. The first compresso... | 10/14/2008 |
| 7426836 | Method and apparatus for air conditioning using a primary and an ancillary power source A method for air conditioning using a primary power source augmented with an ancillary power source which is accomplished by receiving a heat-laden first working fluid at an initial pressure; pre-pressurizing the heat-laden first working fluid to a pre-pressurizatio... | 09/23/2008 |
| 7421853 | Enhanced manual start/stop sequencing controls for a stream turbine powered chiller unit A control system and method for interactive startup and shutdown of a steam turbine driven chiller unit is provided. The chiller unit includes an integrated central control panel to control operation of both the steam turbine system and the refrigerant system. The c... | 09/09/2008 |
| 7421854 | Automatic start/stop sequencing controls for a steam turbine powered chiller unit A control system and method are provided for the automatic startup and shutdown of a steam turbine driven chiller unit. The chiller unit includes an integrated central control panel to control operation of both the steam turbine system and the refrigerant system. Th... | 09/09/2008 |
| 7412842 | Compressor diagnostic and protection system A system includes a compressor, processing circuitry, a first sensor detecting high-side data indicative of an operating condition of a high-pressure side of the refrigeration circuit, and a second sensor detecting low-side data indicative of an operating condition ... | 08/19/2008 |
| 7389649 | Cooling system with variable duty cycle capacity control A control system for a cooling system includes a first sensor for sensing a property indicative of demand for cooling and a controller coupled to the sensor. The controller produces the variable duty cycle control signal in response to the property and causes the co... | 06/24/2008 |
| 7377450 | Control of multi-zone and multi-stage HVAC system A control for controlling a multi-zone HVAC system, wherein the heating or cooling equipment is operable in multiple stages, takes the demand on the system over time into account when determining an appropriate stage. In particular, a time integral of the system dem... | 05/27/2008 |
| 7370487 | Refrigerating cycle device capable of ensuring oil return Whether or not a flow rate of a circulating refrigerant is higher than a predetermined threshold value is judged and when the flow rate is higher than the predetermined threshold value, the discharge flow rate of a compressor 11 is controlled in accordance wi... | 05/13/2008 |
| RE40257 | Compressor pulse width modulation A scroll compressor includes a capacity modulation system. The capacity modulation system has a piston that is connected to the non-orbiting scroll that disengages the non-orbiting scroll from the orbiting scroll when a pressure chamber is placed in communication wi... | 04/22/2008 |
| 7356999 | System and method for stability control in a centrifugal compressor A stability control algorithm is provided for a centrifugal compressor. The stability control algorithm is used to control a variable geometry diffuser and a hot gas bypass valve (when provided) in response to the detection of compressor instabilities. The stability... | 04/15/2008 |
| 7347056 | Vehicle air-conditioning system A vehicle air-conditioning system provided with a refrigeration cycle system is provided. The air-conditioning system includes an evaporator outlet air target temperature setting unit which sets the target temperature of air at an outlet of an evaporator at a predet... | 03/25/2008 |
| 7334428 | Cooling system for a rotary screw compressor A compressor system has a compression stage, a coolant circuit and a refrigerant circuit. The compression stage compresses ambient air and generates compressed air and heat. A coolant removes heat from the compression stage and the heat is transferred from the coola... | 02/26/2008 |
| 7325414 | Hybrid tandem compressor system with economizer circuit and reheat function for multi-level cooling A tandem compressor refrigerant system where an economizer circuit and reheat coil are incorporated to provide additional flexibility and control over overall system capacity and sensible heat ratio as well as to increase system efficiency. In this system, tandem co... | 02/05/2008 |
| 7320576 | Clutchless variable displacement refrigerant compressor with mechanism for reducing displacement work at increased driven speed during non-operation of refrigerating system including the compressor In a variable displacement swash plate type refrigerant compressor (10), a stopper (28) is provided for setting an initial angle of the inclination angle of a swash plate (23) when a drive shaft (19) is not driven. When the drive shaft ( | 01/22/2008 |
| 7311017 | Link mechanism A link mechanism prevents a first pin from coming out of a groove and prevents interference with other elements. The line of action is the line orthogonal to the center line of the grooved portion and passes through the center of the first pin when the first pin is ... | 12/25/2007 |
| 7293965 | Limiter device for variable displacement compressor A limiter device is provided in a variable displacement compressor capable of varying a discharge displacement per revolution and compressing a fluid in a cycle. The limiter device includes an operating characteristic acquiring means for acquiring a predetermined ch... | 11/13/2007 |
| 7287395 | Distributed cooling system A system includes a plurality of distributed refrigeration units respectively coupled to discrete refrigeration circuits. Each refrigeration unit may include a variable compressor, a fixed compressor, a condensing unit, and a controller. The controller compares an o... | 10/30/2007 |
| 7273356 | Control valve device for variable capacity type swash plate compressor There is disclosed a control valve device for a variable capacity type swash plate compressor for use in an air conditioning system. The device comprises an introducing passage for connecting a discharge chamber to a crank chamber in the compressor, and a control va... | 09/25/2007 |
| 7266959 | Cold climate air-source heat pump An improved cold climate air-source heat pump comprising at least a primary compressor, a booster compressor, a first heat exchanger associated with an indoor environment and a second heat exchanger associated with an outdoor environment and with one heat exchanger ... | 09/11/2007 |
| 7261151 | Suction line heat exchanger for COcooling system A heat exchanger including a suction line for gaseous or two phase refrigerant output from an evaporator and a capillary tube carrying cooled refrigerant to the evaporator. The suction line includes first and second substantially parallel straight cylindrical portio... | 08/28/2007 |
| 7260949 | Compressor variable dryer system A dryer assembly for drying compressed fluid received from a fluid compressor. The dryer assembly comprises a compressed fluid circuit and a refrigeration circuit associated with the compressed fluid circuit and configured to reduce the temperature of the compressed... | 08/28/2007 |
| 7246507 | Air conditioner Provided is an air conditioner which has a separator with an oil tank for storing extra oil; a first oil return tube opening above the surface of the extra oil; and a second oil return tube opening below the surface of the extra oil. When the refrigeration cycle can... | 07/24/2007 |
| 7243503 | Method for controlling operation of air conditioner A method for controlling an operation of an air conditioner having an inverter compressor and a regular velocity compressor includes: setting an upper limit threshold and a lower limit threshold based on a desired temperature set by a user, measuring a room temperat... | 07/17/2007 |
| 7240502 | Method for controlling operation of air-conditioner A method for controlling operations of an air-conditioner includes: a step in which when an operation load of an air-conditioner increases, if an outputted compressing capacity of the air-conditioner is smaller than a compressing capacity corresponding to the operat... | 07/10/2007 |
| 7228694 | Cooling control system for an ambient to be cooled, a method of controlling a cooling system, and a cooler A cooling system for cooling an ambient to be cooled, a cooler and a method of controlling a cooling control system are described. The cooling control system comprises a variable capacity compressor and a controller, the controller measuring the load of the compress... | 06/12/2007 |
