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7617694 |
Apparatus and method for controlling super-heating degree in heat pump system
Provided is an air conditioner, particularly, an apparatus and method for controlling a super-heating degree in a heat pump system for preventing a liquid refrigerant from flowing into a...
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7610765 |
Refrigerant charge status indication method and device
A method and apparatus for determining the sufficiency of the refrigerant charge in an air conditioning system by use of temperature measurements. The temperature of the liquid refrigerant leaving...
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7603869 |
Refrigerator having dispenser
The present invention relates to a refrigerator having a dispenser. In the present invention, the dispenser is provided in a concave portion of a door to be exposed toward a front surface of the...
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7596959 |
Monitoring compressor performance in a refrigeration system
A method for monitoring compressor performance in a refrigeration system includes calculating an isentropic efficiency of a compressor of the refrigeration system, averaging isentropic efficiency...
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7596958 |
Refrigeration system with fiber optic sensing
A refrigeration case monitoring system. In one embodiment, the refrigeration case monitoring system includes a first fiber optic cable, a second fiber optic cable, and a control system having a...
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7594407 |
Monitoring refrigerant in a refrigeration system
A method for monitoring refrigerant in a refrigeration system includes calculating a saturation temperature of refrigerant in a refrigeration system based on at least one of a discharge pressure...
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7578135 |
Recessed climate controller
A climate controller is mounted to a wall having an exterior surface. The climate controller includes a mounting bracket recessed within the wall and having a cavity therein. A faceplate is mounted...
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7568358 |
Control for a refrigerator door dispenser light
A door mounted dispenser for a refrigerator includes rear and opposing side walls that collectively define a cavity, a release mechanism for dispensing ice and/or water and a light for illuminating...
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7567420 |
Electrostatically atomizing device
An electrostatically atomizing device includes an emitter electrode, an opposed electrode opposed to the emitter electrode, and a cooling means which condenses the water on the emitter electrode...
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7562537 |
Method of determining cooling system effectiveness
A method and apparatus is disclosed for detecting the ineffectiveness or failure of a fan that is used to cool an electronic device. The method and apparatus use temperatures measured before and...
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7552596 |
Dual thermochromic liquid crystal temperature sensing for refrigerant charge indication
The sufficiency of refrigerant charge in an air conditioning system is determined by a comparison of two sensed temperatures in the system, one being the liquid line temperature and the other being...
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7533536 |
Method and apparatus for measuring and improving efficiency in refrigeration systems
An apparatus for optimizing an efficiency of a refrigeration system, comprising means for measuring a refrigeration efficiency of an operating refrigeration system; means for altering a process...
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7523872 |
Air conditioner control system, central remote controller, and facility controller
An operation information processing section ( 11 ) in a central remote controller ( 5 ) processes operation information from operation setting buttons ( 8 a , 8 b , 8 c ), each of which is...
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7490477 |
System and method for monitoring a condenser of a refrigeration system
A system for monitoring a remote refrigeration system includes a plurality of sensors that monitor parameters of components of the refrigeration system and a communication network that transfers...
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7484377 |
Method and apparatus for cooling system failure detection
A system and method for detecting failure of a cooling system in an alternating current machine, such as a motor and/or a generator. For example, in one embodiment energy wasting is initiated and a...
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7469546 |
Method and apparatus for monitoring a calibrated condenser unit in a refrigerant-cycle system
A real-time monitoring system that monitors various aspects of the operation of a refrigerant-cycle system is described. In one embodiment, the system includes a processor that measures power...
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7436317 |
Electric device with a user guide
An electric device comprising a plurality of operating elements which can be operated by a user. Said device is associated with a status display device, and it also comprises a control logic unit...
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7424343 |
Method and apparatus for load reduction in an electric power system
A system for load control in an electrical power system is described, wherein one or more data interface devices are provided to a cooling system. The data interface devices are configured to...
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7412839 |
Remote data acquisition system and method
An apparatus for diagnosing a cooling system includes a first sensor for sensing a first operating parameter, a second sensor for sensing a motor operating parameter, a controller in communication...
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7386986 |
Apparatus for generating heat of refrigerator and control method thereof
An apparatus for generating heat and a control method thereof are provided which are capable of reducing the cost and simplifying coupling by using a cheap diode for lowering an applied voltage of...
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7386985 |
Detection of refrigerant charge adequacy based on multiple temperature measurements
The refrigerant charge adequacy of an air conditioning system is determined by the sensing of two temperatures in the system, one being at a midpoint in a condenser coil and the other being the...
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7380404 |
Method and control for determining low refrigerant charge
A refrigerant system is provided with a method and a control programmed to perform the method, in which a low charge of refrigerant is identified. The mass flow of refrigerant through the system is...
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7370485 |
Performance testing apparatus of refrigerating cycle
A performance testing apparatus includes a refrigerant pipe provided with open ends, and installed such that a condenser, an expansion device and an evaporator are sequentially aligned from one end...
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7360369 |
Refrigerated food safety monitor
A food refrigeration monitor includes a thermometer for measuring the temperature. A switch is operatively coupled to the thermometer and switches from a first state to at least a second state when...
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7354005 |
Variable capacity climate control system for multi-zone space
A climate control system having two or more stages of cooling operation or heating operation is provided for supplying conditioned air to a plurality of zones within a space, where the climate...
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7350367 |
Environmental control system fluid sensing system and method
A system for monitoring a fluid in an environmental control system includes a mechanical resonator positioned for contacting a thermal change fluid. In some embodiments, the mechanical resonator is...
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7343751 |
Intelligent thermostat system for load monitoring a refrigerant-cycle apparatus
A real-time monitoring system that monitors various aspects of the operation of a refrigerant-cycle system is described. In one embodiment, the system includes a processor that measures power...
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7343750 |
Diagnosing a loss of refrigerant charge in a refrigerant system
A refrigerant system has a controller associated with it that determines an equilibrium pressure when the system is inactive. The controller determines if the equilibrium pressure differs from an...
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7342756 |
Fault recognition in systems with multiple circuits
A method for detecting compressor or system degradation or malfunction in a multiple circuit compressor system includes the steps of providing a multiple circuit compressor system including at...
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7337619 |
Method and system for assessing a refrigerant charge level in a vehicle air conditioning system
A method and system for assessing a level of refrigerant in a vehicle air conditioning system. A refrigerant charge value is determined as a function of ambient air temperature, ambient air...
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7331187 |
Intelligent thermostat system for monitoring a refrigerant-cycle apparatus
A real-time monitoring system that monitors various aspects of the operation of a refrigerant-cycle system is described. In one embodiment, the system includes a processor that measures power...
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7313923 |
Compressor diagnostic system for communicating with an intelligent device
A compressor includes a motor protector which stops the compressor motor when it senses an out of specification condition. A diagnostic system monitors the status of the motor protector and...
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7310957 |
Ice machine with remote monitoring
A commercial ice making machine having an electronic monitoring device which captures the operating status and production history of the ice machine. The ice production history of the machine is...
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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...
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7293422 |
Refrigerator with internal compartment divisible into independent temperature zones
A refrigerator having a removable shelf with a user interface for setting the working conditions of a refrigerator compartment. The user interface also being able to transmit the working conditions...
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7290398 |
Refrigeration control system
A refrigeration system and method includes a refrigeration component and an electronics module preconfigured with a data set for the refrigeration component. The electronics module stores the data...
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7275863 |
Threshold calorimeter/shelf life monitor
Threshold calorimeter/shelf life monitors having a thermally moderating housing containing a liquid solution and one or more low melting point solids all having properties correlated relative to...
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7275377 |
Method and apparatus for monitoring refrigerant-cycle systems
A real-time monitoring system that monitors various aspects of the operation of a refrigerant-cycle system is described. In one embodiment, the system includes a processor that measures power...
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7270278 |
Distributed intelligence control for commercial refrigeration
A commercial refrigeration system including a compressor, a condenser, a valve, and an evaporator coil, all of which are in fluid communication. The refrigeration system further including a fixture...
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7270174 |
Method, system and program product for automatically checking coolant loops of a cooling system for a computing environment
Method, system and program product are provided for facilitating operation of a cooling system designed to provide system coolant to one or more electronics subsystems of a computing environment....
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7269962 |
Cooling medium compressor arrangement
A cooling medium compressor arrangement is comprised of a compressor, a control mechanism electrically connected with the compressor, and a gas sensor, and the safety of the arrangement is improved...
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7264175 |
Thermostat with parameter adjustment
A thermostat includes a number of control parameters including a temperature set point, a selected cycle rate, a room temperature swing setting, and/or any other suitable control parameter. In one...
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7234313 |
HVAC monitor and superheat calculator system
The present invention relates to a monitoring system for connection to an air conditioning system. The monitoring system includes a primary monitor for sensing the suction temperature and suction...
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7222493 |
Compressor diagnostic system
A system and method for diagnosing and protecting a compressor includes a sensor, logic circuitry, a motor protector and an intelligent device. The logic circuitry is associated with the sensor and...
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7216498 |
Method and apparatus for determining supercritical pressure in a heat exchanger
A method and apparatus to determine the pressure of a supercritical refrigerant within a heat exchanger of a transcritical vapor compression system. A plurality of measurements, e.g., temperature,...
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7207180 |
Air conditioner, in particular for use in motor vehicles, and a method for its operation
The invention relates to an air conditioner, in particular for use in motor vehicles, with a cooling circuit and a ventilation system, wherein the cooling circuit features an evaporator/heat...
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7201006 |
Method and apparatus for monitoring air-exchange evaporation in a refrigerant-cycle system
A real-time monitoring system that monitors various aspects of the operation of a refrigerant-cycle system is described. In one embodiment, the system includes a processor that measures power...
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7194337 |
Agent-based operation of a robotic device
A method for agent-based operation of a robotic device. In the method, at least one condition is detected in various locations of a room with a plurality of sensors. In a plurality of agents...
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7188482 |
Fault diagnostics and prognostics based on distance fault classifiers
The present invention is directed to a mathematical approach to detect faults by reconciling known data driven techniques with a physical understanding of the HVAC system and providing a direct...
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7172134 |
Freezer alarm system and apparatus for refrigeration units
A freezer alarm system and apparatus for monitoring the temperature in the freezer compartment of a refrigeration unit includes a housing mountable on a wall adjacent the refrigeration unit for...
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