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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 8161761 | Method and apparatus for wine cellar temperature and humidity control A self-contained climate control system for simultaneous temperature and humidity control in a wine cellar includes a refrigeration system having a conventional vapor-compression system including a condensate drip tray with over-flow passages. A programmable control... | 04/24/2012 |
| 7975495 | Control scheme for coordinating variable capacity components of a refrigerant system A refrigerant system adjusts, in a coordinated prioritized manner, the variable capacities of a compressor, evaporator fan and a condenser fan to minimize the system's overall power consumption while maintaining a comfort zone within a target comfort range. The targ... | 07/12/2011 |
| 7926297 | Air conditioning system In an input section (30), a set temperature Ts which becomes a control target temperature of a humidity controller (10), and a set relative humidity Rs which becomes a control target humidity of the humidity controller (10) are set. An air condi... | 04/19/2011 |
| 7900464 | Humidity detecting apparatus and vehicular air conditioner having the same A humidity detecting apparatus includes a humidity sensor for detecting a relative humidity of air on an inner side of a window glass, an air temperature sensor for detecting a temperature of the air, a glass temperature sensor for detecting a temperature of the win... | 03/08/2011 |
| 7895850 | Modulating proportioning reversing valve A method of operating a reversible heat pump system includes steps of sensing an outdoor air temperature with a first sensor and sensing at least one condition of an outdoor heat exchanger coil with a second sensor. Input from the first and second sensors is then el... | 03/01/2011 |
| 7895851 | Method for controlling humidity in a domestic refrigerator, and refrigerator adapted to carry out such method A method for controlling the humidity inside a refrigerator, having at least a cavity and a refrigeration circuit including an evaporator and a compressor, comprising the step of measuring the relative humidity level inside the cavity, measuring the temperature of t... | 03/01/2011 |
| 7854135 | Fully articulated and comprehensive air and fluid distribution, metering, and control method and apparatus for primary movers, heat exchangers, and terminal flow devices The described method and apparatus pertains namely to the HVAC (Heating, Ventilating, and Air Conditioning) industry, though its many functions extend into any and all forms of air-fluid movement, metering, distribution, and containment. Essentially, the scope of op... | 12/21/2010 |
| 7845182 | Fan control limitation logic in auto defog system A method for controlling a vehicle HVAC system to automatically defog a window and to prevent fogging or condensation of the window. In-cabin air temperature and relative humidity are used to determine a dewpoint. Further, ambient or outside air temperature is measu... | 12/07/2010 |
| 7841194 | Air conditioner and method of controlling such The invention provides an air conditioner that is capable of performing optimal control in accordance with the environment of an indoor space at startup, and a method of controlling such. The air conditioner forms a refrigerant circuit having a first heat exchanger,... | 11/30/2010 |
| 7836712 | Air conditioning apparatus An air conditioning apparatus comprises an air-conditioning unit including at least a cooling coil as a heat exchanger, a blower, a chiller, and a coolant pump for conducting air-conditioning, wherein the coolant pump pumps the coolant cooled by the chiller to the c... | 11/23/2010 |
| 7793510 | Two mode thermostat with set-back temperature and humidity set-point feature Various thermostat embodiment are provided that includes at least a first sensor configured to communicate information indicative of the temperature within the space, and at least a second sensor configured to communicate information indicative of the humidity withi... | 09/14/2010 |
| 7757504 | Air conditioning controller An air conditioning controller is provided with a room temperature-humidity combination calculation unit, a temperature-humidity setting value determination unit and a temperature-humidity control unit. The room temperature-humidity combination calculation unit is c... | 07/20/2010 |
| 7721560 | Climate control and dehumidification system and method A system for controlling temperature and humidity in an enclosure, that has a central air conditioning system; a dehumidifier attached to a return air duct of the central air conditioning system; and a system control unit that comprises a thermostat, dehumidstat and... | 05/25/2010 |
| 7698903 | Energy efficient ventilation system The energy efficient ventilation system provides tempered air to an air to air heat exchanger, such as a heat pump. The system includes independent air intake sources from a tunnel, a structure, and the exterior of the structure that direct air to a control module. ... | 04/20/2010 |
| 7647785 | Air conditioning system The present invention provides an air conditioning system that can appropriately adjust humidity. The air conditioning system is an air conditioning system that comprises a plurality of indoor units that jointly air conditions a same space, comprising a first indoor... | 01/19/2010 |
| 7574871 | Systems and methods for whole-house dehumidification based on dew point measurements A dehumidifier system is connected to an interior space of a building through supply and return ducts, either directly and/or through an HVAC system. Controllable dampers can be used to select how the dehumidifier system is connected to the interior space and the HV... | 08/18/2009 |
| 7454920 | Method and apparatus for moisture control within a phased array An apparatus includes a circuit having a heat-generating circuit component, and structure for guiding a two-phase coolant along a path which brings the coolant into direct physical contact with either the circuit component or a highly thermally conductive part which... | 11/25/2008 |
| 7434415 | System and method for using hot gas reheat for humidity control A humidity control method is provided for a multi-stage cooling system having two or more refrigerant circuits that balances humidity control and cooling demand. Each refrigerant circuit includes a compressor, a condenser and an evaporator. A hot gas reheat circuit ... | 10/14/2008 |
| 7421847 | Refrigeration unit condensation prevention Apparatus, systems and methods are disclosed for efficient elimination of door and frame condensation at widely utilized commercial freezer/refrigeration display cases. The apparatus includes a local controller unit connected with an array of case sensors including ... | 09/09/2008 |
| 7392659 | Dynamic control of a variable displacement compressor Controlling displacement in a variable displacement compressor of an automobile air conditioning system entails detecting the temperature and humidity level of air entering the evaporator, setting a target air probe temperature from inside the automobile, and readin... | 07/01/2008 |
| 7392838 | System and method for vehicle defogging condition calculation and control A method and apparatus for controlling a vehicle HVAC system to automatically defog a windshield glass and to prevent fogging or condensation of the windshield glass. The ambient air temperature and vehicle speed are measured and used to determine a windshield glass... | 07/01/2008 |
| 7386988 | Outside temperature humidity compensation system A humidity control system having an outside temperature humidity compensator circuit responsively coupled to an outside temperature sensing circuit and capable of responding to sensed inside humidity levels to provide control signals to a humidity controller to auto... | 06/17/2008 |
| 7380406 | Refrigerated water pumping system A refrigerated water pumping system provides high-pressure refrigerated water to misting nozzles situated in a livestock enclosure for housing livestock and adapted for converting the high-pressure refrigerated water into a fine mist or fog of water droplets at a ta... | 06/03/2008 |
| 7377052 | Low temperature clothes dryer A low temperature clothes dryer having a drying chamber provides removable horizontal screens supporting clothing items and a hanging bar for hanging clothes to be dried. A timing control allows setting the time of operation of the drying cabinet. An electric heater... | 05/27/2008 |
| 7357045 | Buoyancy-corrected gravimetric analysis system Relatively accurate gravimetric analysis of airborne particulate matter in a sample is achieved by making gravimetric measurements of the sample on a microbalance in a closed chamber, continuously electronically monitoring air pressure, humidity and temperature in t... | 04/15/2008 |
| 7334938 | Mold and fungus growth warning apparatus and method An apparatus for monitoring environmental conditions favorable for mold, mildew and fungus growth includes a microprocessor having a data map, a temperature sensor attached to the microprocessor, a relative humidity sensor attached to the microprocessor, an indicato... | 02/26/2008 |
| 7331188 | Method for controlling an HVAC system A method for controlling a heating, ventilation and air-conditioning (HVAC) system having an air vent associated with a window for blowing an air flow of controlled temperature thereon; the HVAC system having a refrigeration unit with a compressor and an evaporator,... | 02/19/2008 |
| 7292929 | System for a virtual dew point sensor A system for a virtual dew point sensor is disclosed including a method for operating the virtual dew point sensor. The method includes determining a first humidity ratio indicative of the humidity associated with an ambient air as a function of at least a relative ... | 11/06/2007 |
| 7288858 | Circuit arrangement for controlling a sensor To provide a circuit arrangement for controlling a sensor by means of a power supply source which is connected to input terminals of the sensor, and an evaluation circuit which is connected to output terminals of the sensor, by means of which the current consumption... | 10/30/2007 |
| 7290037 | Scalable wireless remote control and monitoring system with automatic registration and automatic time synchronization A system for controlling, monitoring and receiving data from a plurality of devices located at a remote site. A network operations center (NOC) has a plurality of protocols for a plurality of applications. A customer interface with the NOC provides customer control ... | 10/30/2007 |
| 7275379 | Automotive HVAC system and method of operating same utilizing enthalpy-based control The present invention concerns a method for controlling the operation of an automotive HVAC system. The HVAC system includes at least a refrigerant compressor and a refrigerant evaporator. The method includes the steps of calculating an ambient air enthalpy value; c... | 10/02/2007 |
| 7266960 | Single integrated humidity and ventilation control in an HVAC system HVAC systems are employed to control the indoor environmental characteristics of a building structure to make it comfortable for its inhabitants. An HVAC system includes one single integrated central control to regulate an indoor temperature level, an indoor relativ... | 09/11/2007 |
| 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 |
| 7257959 | Integral type air conditioner A front panel for an integral type air conditioner is provided. The front panel of the integral type air conditioner has a side intake formed at a side portion thereof such that desired air is introduced. The front panel also includes a discharge hole through which ... | 08/21/2007 |
| 7255161 | Method of controlling a heating and air conditioning system in a motor vehicle A method for controlling a heating and air conditioning system equipped with actuators, preferably vents, is provided. Interior conditions are detected by an interior sensing system, with at least the seat occupancy with occupants being automatically recognized by a... | 08/14/2007 |
| 7249493 | Method and apparatus for measuring relative humidity of a mixture A method and apparatus for measuring relative humidity of a mixture that provides a quick response time for thermal lag while affording protection to fragile sensors. In one aspect, the invention is a method for calculating the relative humidity of a mixture compris... | 07/31/2007 |
| 7228693 | Controlling airflow in an air conditioning system for control of system discharge temperature and humidity An air conditioning system may comprise an air handler, heat pump or fossil fuel furnace and may include a variable speed blower for conducting air through the system and operably connected to a controller which is also connected to a thermostat and/or humidity sens... | 06/12/2007 |
| 7222666 | Vehicle air-conditioning apparatus that can surely defog window A vehicle air-conditioning apparatus includes a dehumidification means, which has a compressor and dehumidifies inside of the vehicle, a humidity calculation means, which calculates humidity in the vicinity of an inside surface of the windshield, and a determination... | 05/29/2007 |
| 7219506 | Method for estimating inlet and outlet air conditions of an HVAC system The temperature of the air exiting an evaporator and the relative humidity of the air entering and exiting the evaporator can be calculated by using existing sensors in a vapor compression system. The temperature of the air exiting the evaporator is calculated by us... | 05/22/2007 |
| 7214911 | Fogging detecting system for an automotive vehicle and method for controlling the system A car defogging system reduces energy required to defog a windshield glass of the car. A temperature sensor mounted at the windshield glass detects the glass surface temperature, Ts. A humidity sensor spaced from the windshield glass by a predetermined distance dete... | 05/08/2007 |
