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7621137 |
Method of operation and regulation of a vapour compression system
The present invention involves a compression refrigeration system including a compressor, a heat rejector, expansion means and a heat absorber connected in a closed circulation circuit that may...
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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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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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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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7565813 |
Thermostat having modulated and non-modulated provisions
A thermostat providing modulated or analog control of valves or dampers of an air management system. This permits operating a single cooling or heating stage with partially open valves or dampers...
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7542824 |
Air conditioning control device
An air conditioning control device is configured to obtain and control data on an air conditioner, which includes a plurality of indoor units. The air conditioning control device includes a data...
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7484376 |
Compressor diagnostic and protection system and method
A system and method includes a compressor, a motor drivingly connected to the compressor, a current sensor detecting current supplied to the motor, a discharge line temperature sensor detecting...
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7472554 |
Passenger environmental protection
The system includes a carbon dioxide sensor, a temperature sensor and a controller. The carbon dioxide sensor is in electrical communication with the controller and generates a carbon dioxide...
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7458223 |
Compressor configuration system and method
A system and method including a compressor operable in a refrigeration circuit and including a motor, a current sensor detecting current drawn by the motor and providing a high-side condition...
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7434413 |
Indoor air quality and economizer control methods and controllers
Supervisory controllers, and methods, for use in a coordinated IAQ and economizer system. Various control objectives are defined and met. Some illustrative control objectives include economizer...
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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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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...
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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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7364095 |
Apparatus for judging target to be temperature-regulated
Between a characteristic a of a process chamber 21 a having a large pressure loss and a characteristic b of a process chamber 21 b having a small pressure loss, threshold value A (flow rate...
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7328587 |
Integrated adaptive capacity control for a steam turbine powered chiller unit
A control system for a steam turbine driven chiller unit is provided. The control system automatically utilizes the full range of the governor, compressor pre-rotation vanes, and hot gas bypass...
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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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7299996 |
Thermostat with energy saving backlit switch actuators and visual display
An air conditioning system thermostat includes a visual display and plural switch actuators, respectively backlit by an electroluminescent lamp and LED light sources mounted on a circuit board...
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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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7287709 |
Configurable multi-level thermostat backlighting
A thermostat includes a display and an illumination device that is configurable to illuminate the display in a partial illumination mode and a full illumination mode. In the partial illumination...
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7287393 |
Central control system of air conditioners and method for operating the same
A central control system controls peak power of multiple air conditioners that includes indoor units installed in rooms of a building and an outdoor unit for controlling refrigerant circulation. A...
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7272944 |
Vehicle air conditioner with non-contact temperature sensor
A vehicle air conditioner includes a non-contact temperature sensor for detecting a temperature in a predetermined area of a passenger compartment in non-contact, an air conditioning unit that...
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7272943 |
Control method for multiple heat pump
Disclosed herein is a control method for a multiple heat pump. In the control method, when one of multiple indoor units operates in the heating mode and the other indoor units shut down, electronic...
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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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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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7262810 |
Television-watchable refrigerator system and method for operating the same
A television-watchable refrigerator system and a method for operating the same. A Web pad is detachably mounted on the outer surface of a refrigerator and a television (TV) module or TV antenna...
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7249468 |
Air conditioning system
An air conditioning system has a compressor for compressing a liquid refrigerant to form a high pressure vapor which is fed to a condenser for cooling the vapor so that it returns to liquid state...
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7231773 |
Startup control system and method for a multiple compressor chiller system
A startup control algorithm for a multiple compressor liquid chiller system is provided wherein the maximum number of compressors to be started to satisfy system load conditions is provided. The...
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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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7201005 |
Measured fill water dispenser for refrigerator freezer
A water dispenser for a refrigerator freezer having a water dispensing control including a measured fill mode of operation in which the water dispenser dispenses a predetermined amount of water and...
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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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7178349 |
System and method for switching communication mode of a detachable pad refrigerator
A system and method for switching a communication mode of a detachable pad refrigerator, wherein the attachment/detachment of a client pad to/from the refrigerator is sensed and the communication...
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7174730 |
Method for controlling air conditioner having multi-compressor
Disclosed is a method for controlling an air conditioner having a multi-compressor capable of improving an ability that corresponds to a room cooling load or a room heating load and capable of...
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7162883 |
Compressor diagnostic method
A method includes determining base-line operating parameters for a compressor, generating a high-side signal indicative of high-side compressor operating conditions, generating a low-side signal...
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7152414 |
Operating unit comprising at least one operating element
The invention relates to an operator control unit having at least one operator control for setting a setpoint value, in particular a temperature, an air quantity and/or an air distribution, an...
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7145463 |
System and methods for providing automatic adjustment of operating setpoints for a monitoring device
A method for providing an electronic monitoring device with the ability to detect the status of a controlled condition of a monitored environment, and, based on this status, to automatically...
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7143590 |
Vehicle air conditioner
In a vehicle air conditioner, at least one of an inner surface temperature of a passenger compartment and a surface temperature of a passenger in each detection area is the passenger compartment is...
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7114343 |
Method and apparatus for monitoring a 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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7104462 |
Low noise solid-state thermostat with microprocessor controlled fault detection and reporting, and programmable set points
A low noise solid state thermostat is provided which includes a thermostat input operatively configured to be coupled to a temperature sensor; a comparator for comparing an output of the...
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7100382 |
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...
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7083109 |
Thermostat having modulated and non-modulated provisions
A thermostat providing modulated or analog control of valves or dampers of an air management system. This permits operating a single cooling or heating stage with partially open valves or dampers...
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7082776 |
Apparatus and method for controlling cold air circulation in refrigerator
The present invention relates to an apparatus and method for controlling cold air circulation in a refrigerator. The present invention re-circulates cold air, which has been discharged into a...
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7065976 |
Control logic for maintaining proper solution concentration in an absorption chiller in co-generation applications
This application discloses a control logic for maintaining a proper solution concentration within an absorption chiller. Further, safeguards are added to a system control to ensure robust operation...
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7043927 |
Transport Refrigeration system
A transport refrigeration system, the transport refrigeration system including a container defining an enclosed volume and a refrigeration module coupled to the container. The refrigeration module...
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7040104 |
Operating unit comprising at least one operating element for an air conditioning installation and/or an automatic air conditioning system
The invention relates to an operating unit comprising at least one operating element, especially for adjusting the quantity of air, the temperature or the air distribution of an automatic air...
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7032397 |
Thermostat for use with compressor health indicator
A method of operating a climate control system includes generating a signal based upon the operation of the compressor, and controlling the compressor in response to the generated signal. A climate...
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7024870 |
Method of managing a refrigeration system
A method of managing a refrigeration system includes transmitting energy consumption, maintenance indicator, and food condition data from the refrigeration system to a management center; analyzing...
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7013656 |
Vehicle ventilation and deodorization system
A ventilation and deodorization system includes a door lock switching unit for performing a locking and an unlocking of a vehicle door, an air conditioner which introduces outside air of a...
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