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| Number | Title | Issue Date |
| 8161762 | Refrigerator A refrigerator includes a housing including a cooling compartment and a machine compartment, a refrigeration cycle provided in the housing and including a compressor, a condenser, a decompressor, and an evaporator which provide a refrigerant path, a refrigerant prov... | 04/24/2012 |
| 8051668 | Condenser fan control system A controller comprises a first input that receives a signal indicating an energy consumption value of a compressor, a second input that receives a signal indicating an energy consumption value of a condenser fan, and an output that provides a control signal to the c... | 11/08/2011 |
| 8037700 | Air conditioning system for low ambient cooling An air conditioning system that comprises a controller that is in electrical communication with a compressor, a condenser fan, a temperature sensor that measures the temperature of the ambient air, a temperature sensor that measures the temperature of a condenser co... | 10/18/2011 |
| 8015834 | Rotation speed control device, air conditioner, and rotation speed control method An outdoor control unit includes a first control unit, a second control unit, and a switching unit. The outdoor control unit controls the rotational speed of an outdoor fan. The first control unit executes a first control for controlling the rotational speed of the ... | 09/13/2011 |
| 7997095 | Method of controlling air conditioner cooling load utilizing controlling the opening degree of an expansion valve and/or the number of rotations of an outdoor fan A method of controlling an air conditioner includes a step of controlling an opening degree of the expansion valve and/or the number of rotations of an outdoor fan of the outdoor heat exchanger such that the difference Tx (=Te−Ti) between the temperature Te of the... | 08/16/2011 |
| 7845183 | Variable speed condenser fan control system A controller includes a first input that receives a signal indicating an energy consumption value of a compressor, a second input that receives a signal indicating an energy consumption value of a variable speed condenser fan, a third input that receives a signal in... | 12/07/2010 |
| 7748224 | Air-conditioning assembly A temperature sensing assembly for monitoring a temperature of a pipe in a system. The temperature sensing assembly includes an insulator body having a first end, a second end, an outer surface, and an inner surface. The outer and inner surfaces extend between the f... | 07/06/2010 |
| 7748225 | Interactive control system for an HVAC system An interactive system for controlling the operation of an HVAC system is provide that comprises a thermostat for initiating the operation of the HVAC system in either a full capacity mode of operation or at least one reduced capacity mode of operation, and a control... | 07/06/2010 |
| 7658079 | Cooling system and method The present invention related to cooling systems. More specifically, the present invention relates to a system for cooling one or more parts of a building and or processes comprising a compressor, a condenser having an inlet and an outlet and a plurality of condense... | 02/09/2010 |
| 7581409 | Cooling system and method The present invention related to cooling systems. More specifically, the present invention relates to a system for cooling one or more parts of a building and or processes comprising a compressor, a condenser having an inlet and an outlet and a plurality of condense... | 09/01/2009 |
| 7464561 | Unitary control for air conditioner and/or heat pump A unitary control for operating at least the fan and compressor of a climate control apparatus in response to signals received from a thermostat. The unitary air conditioning control includes a circuit board, a microprocessor on the circuit board, a first relay on t... | 12/16/2008 |
| 7434416 | Air-conditioning system An air-conditioning system includes a refrigeration cycle and a control unit. The refrigeration cycle includes an electric compressor in which a compression mechanism for drawing a refrigerant therein for compression is integrated with an electric motor for driving ... | 10/14/2008 |
| 7367199 | Method for automatically balancing air conditioning outdoor heat exchange A method for automatically balancing air conditioning outdoor heat exchange detects a piping measured value of each piping equipment through a detection unit and compares the piping measured value with a set operation mode selected by users and a set value. Airflow ... | 05/06/2008 |
| 7350368 | Stationary vehicle air conditioning system The invention pertains to a stationary vehicle air conditioning system with a refrigerant circuit, in which at least one compressor circulates the refrigerant to at least two condensers. The at least one compressor may be powered by the vehicle's mechanical power, b... | 04/01/2008 |
| 7334419 | Heat pump water heater A heat pump water heater system including a water storage tank and a heat exchange system. The heat exchange system includes a heat absorber positioned below the water storage tank and a heat rejecter in fluid communication with the heat absorber and positioned with... | 02/26/2008 |
| 7308384 | Ordered record of system-wide fault in an HVAC system An HVAC system includes a central controller which communicates with a multiple of HVAC components over a digital communication bus. The central controller maintains an ordered fault list that includes the source of a fault, a description of the fault, the last occu... | 12/11/2007 |
| 7296426 | Interactive control system for an HVAC system An interactive system for controlling the operation of an HVAC system is provide that comprises a thermostat for initiating the operation of the HVAC system in either a full capacity mode of operation or at least one reduced capacity mode of operation, and a control... | 11/20/2007 |
| 7284742 | Flow control valve A flow control valve for controlling water flow, for example through a refrigeration unit condenser spray cooling system. The valve includes an arm that carries a paddle adapted to be placed in an air stream for deflection by an air current. Movement of the paddle c... | 10/23/2007 |
| 7275378 | Speed and system pressure control for cooling fan A method and system for controlling a cooling fan that cooperates with an air conditioning condenser in a vehicle. The present embodiments include steps and corresponding implementations for determining a speed of the vehicle, determining a discharge pressure of the... | 10/02/2007 |
| 7273672 | Solid polymer electrolyte fuel cell The present invention provides a solid polymer electrolyte fuel cell comprising a fuel cell stack 21 formed by laminating a plurality of fuel cell units each of which includes a fuel electrode 23, an oxidant electrode 24, and a solid polymer ele... | 09/25/2007 |
| 7263849 | Refrigerating system for refrigerator A refrigerating system for a refrigerator is disclosed. The refrigerator includes a compressor that compresses refrigerant, a condenser connected to the compressor that condenses compressed refrigerant, an expansion valve connected to the condenser that expands cond... | 09/04/2007 |
| 7246500 | Variable speed condenser fan control system A controller comprises a first input that receives a signal indicating an energy consumption value of a compressor, a second input that receives a signal indicating an energy consumption value of a variable speed condenser fan, and an output that provides a control ... | 07/24/2007 |
| 7246941 | Sensing media temperature in an HVAC valve An apparatus and method are provided for determining the temperature of an operating fluid media in an HVAC system. An integral temperature sensor, mounted within an actuator of an actuator-driven HVAC valve, senses the temperature of a valve body of the HVAC valve.... | 07/24/2007 |
| 7225629 | Energy-efficient heat pump water heater An energy-efficient heat pump water heating system determines whether to energize a heat pump by interpreting readings from one or temperature sensors based on two thresholds. The heat pump is energized if the detected temperature falls below a first threshold and d... | 06/05/2007 |
| 7181920 | Cooling plant for a fluid with control of variables Cooling plant for a “cooled” fluid, able to cool and/or dry the fluid by means of cooling substantially to a pre-established temperature, the plant comprising a heat exchanger (17), to cool the fluid, by means of heat exchange with a “cooling” fluid i... | 02/27/2007 |
| 7159408 | Charge loss detection and prognostics for multi-modular split systems A method for detecting and predicting refrigerant level includes the steps of determining an estimated value for a parameter indicative of refrigerant level and comparing that estimated value to an actual value. The difference between the actual and estimated value ... | 01/09/2007 |
| 7137263 | Low profile condenser motor An air conditioning (A/C) system includes a condenser and an electric motor that drives a fan to induce air flow through the condenser. The electric motor includes an internal stator assembly and an external rotor assembly rotatable about the internal stator assembl... | 11/21/2006 |
| 7104076 | Lubricant return schemes for use in refrigerant cycle A control algorithm is developed which takes corrective action in the event that system conditions indicate there may be an inadequate flow of lubricant in the system. In particular, if a discharge pressure is below a predetermined amount or if the suction modulatio... | 09/12/2006 |
| 7079967 | Apparatus and method for detecting faults and providing diagnostics in vapor compression cycle equipment An apparatus and method for detecting faults and providing diagnostic information in a refrigeration system comprising a microprocessor, a means for inputting information to the microprocessor, a means for outputting information from the microprocessor, and five sen... | 07/18/2006 |
| 7032394 | Method and apparatus for checking a pressure monitoring device of a compression refrigerating plant A pressure monitoring device of a compression refrigerating plant having a compressor, a condenser and an energy discharge device cooperating with the latter, is tested by an automatically proceeding self-test program. In this case, the energy discharge device is at... | 04/25/2006 |
| 7027912 | Method and system for controlling an engine to maintain a comfortable cabin temperature within a vehicle A method and system for controlling an engine in order to maintain a comfortable cabin temperature within a vehicle that is equipped with an engine, a battery and a heating/cooling apparatus including determining an acceptable range of cabin temperatures, monitoring... | 04/11/2006 |
| 7024873 | Refrigerator and method for controlling the same A refrigerator including a control unit for a condenser fan in connection with operation of a compressor if an outdoor temperature sensor is out of order. Since the condenser fan is driven in connection with the operation of the compressor, a trip phenomenon of the ... | 04/11/2006 |
| 7007490 | Refrigerator and control method thereof A refrigerator, in which air blast fans in storage chambers are controlled so as to reduce a power consumption rate, and a control method of the refrigerator. The control method includes the steps of (a) determining whether or not a plurality of air blast devices, r... | 03/07/2006 |
| 6973793 | Estimating evaporator airflow in vapor compression cycle cooling equipment A method for determining airflow through an evaporator coil in a vapor compression cycle by measuring the moist air conditions entering and leaving the coil, and various temperatures and pressures in the refrigerant of the vapor compression cycle. The mass airflow r... | 12/13/2005 |
| 6973794 | Refrigeration system and method of operating the same A refrigeration system including a compressor, condenser, valve, and refrigeration branch, all of which is in fluid communication. The refrigeration branch includes an evaporator coil. The refrigeration system further includes a case adapted to be cooled by the evap... | 12/13/2005 |
| 6959558 | Systems and methods for head pressure control The present invention relates to systems and methods for controlling head pressure in a vapor compression system, e.g. in a precision air conditioning system. One embodiment of the invention provides a method for regulating working fluid flow in a vapor compression ... | 11/01/2005 |
| 6955057 | Control scheme and method for dehumidification systems at low ambient conditions A method for operating a vapor compression system includes the steps of providing a vapor compression system having a compressor circuit including a compressor having an inlet port and an outlet port, a circuit incorporating the compressor, a condenser, an evaporato... | 10/18/2005 |
| 6948331 | Environmental control system for an aircraft An environmental control system for an aircraft includes a vapor cycle system for circulating a refrigerant through a fuel cooled condenser, a primary evaporator wherein the expanded refrigerant is used to provide cooling for a cooling medium and a secondary evapora... | 09/27/2005 |
| 6948326 | Apparatus for controlling operation of outdoor unit and its method The present invention discloses an apparatus and method for controlling an operation of an outdoor unit which can efficiently control the outdoor unit by mounting sensors on the outdoor unit. The apparatus for controlling the operation of the outdoor unit includes: ... | 09/27/2005 |
| 6931867 | Cooling system with isolation valve A cooling system including a pulse-width modulated variable capacity compressor operable between on-cycles and off-cycles, and in electrical communication with the compressor and operable to respectively synchronize opening and closing thereof with on- and off-cycle... | 08/23/2005 |
