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Document Title |
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7490479 |
Method and system of advanced fan speed control
According to some embodiments, a method, system, and apparatus to provide thermal management control. In some embodiments, the method includes receiving, by a control mechanism, a plurality of...
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7448226 |
Refrigerator
A refrigerator has a refrigerating cycle sequentially connecting a compressor, a condenser, a drawing mechanism, and evaporator, an accumulator, an inlet temperature sensor and an outlet...
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7421850 |
Refrigeration system and method of operating the same
A refrigeration system including an evaporator, a suction header in fluid communication with the evaporator, a compressor in fluid communication with the suction header, and a condenser in fluid...
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7412841 |
Turbo chiller, compressor therefor, and control method therefor
A compressor for a turbo chiller that can stably and efficiently operate in various operating states is provided. An aerodynamic feature map showing a rotating stall line at which rotating stall...
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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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7269963 |
Vehicle air conditioning apparatus
Parameters are set in accordance with a running condition of a vehicle and an environmental condition based on a wiper operation signal of the vehicle. The parameters are used to calculate a stable...
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7225864 |
Multi-channel temperature control system for semiconductor processing facilities
A temperature control system for a semiconductor processing facility includes a common cooling unit for controlling the temperature of a cooling fluid and multiple remote temperature control...
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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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7177742 |
Vehicular air-conditioner and method of controlling the same
A vehicular air-conditioner includes a compressor to be driven by an engine. The vehicular air-conditioner includes a controller configured to reduce a load on the compressor in response to a...
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7171820 |
Non-linear control algorithm in vapor compression systems
A PID control for a vapor compression system utilized to heat water identifies a particular range of error signals and derivative of the error signals that could be indicative of the cycle moving...
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7093454 |
Centrifugal heat transfer engine and heat transfer systems embodying the same
A heat transfer engine having cooling and heating modes of reversible operation, in which heat can be effectively transferred within diverse user environments for cooling, heating and...
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6993921 |
Multi-variable control of refrigerant systems
A control particularly useful for a hot water heating system, includes calculation of a desired leaving water temperature for water leaving a hot water heat exchanger, and a desired refrigerant...
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6871509 |
Enhanced cooling system
An air conditioning system is disclosed which takes advantage of low ambient temperature conditions so as to activate a refrigerant flow that bypasses the compressor. The activation of the...
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6718955 |
Electric supercharger
The present invention relates to a multiple electric motor driven centrifugal air compressor, for example, for gasoline or diesel engine powered vehicles.
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6701732 |
Air conditioner
A refrigerant circuit ( 15 ) is disposed which is formed by connection of an outdoor unit ( 11 ) and two indoor units ( 12, 13 ). And, the air conditioning capacity of the outdoor unit ( 11 ) is...
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6691522 |
Controller for vehicle air conditioner
A controller for a vehicle air conditioner which includes a control unit, a fuel cutoff control unit capable of stopping supply of fuel to an engine, an engine rpm detecting unit capable of...
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6679065 |
Temperature controlled compartment apparatus and method of controlling temperature
A temperature controlled apparatus comprises a reversible solid state device having a first section and a second section; portions of the first and the second sections are disposed in intimate...
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6615598 |
Scroll machine with liquid injection
A refrigeration circuit includes a scroll compressor, a condenser and an evaporator connected in a closed loop. A liquid injection system takes liquid refrigerant from the refrigerant circuit and...
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6560980 |
Method and apparatus for controlling evaporator and condenser fans in a refrigeration system
A method and apparatus for controlling evaporator and condenser fans in a refrigeration system. The apparatus is a refrigeration system including a refrigerant circuit defined by a compressor, a...
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6526770 |
Method for controlling the temperature of a refrigerator
The present invention relates to temperature control for refrigerators, which automatically adjusts the on-temp/off-temp values in view of the fluctuation of the ambient temperature. The present...
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6484522 |
Screw compressor for refrigerating apparatus
The present invention provides a screw compressor for refrigerating apparatus capable of controlling the rotational speed of a motor to be suitable for cooling heat load by simply controlling an...
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6481227 |
Air conditioner
An air conditioner having a refrigerant circuit that maintains a high cooling efficiency and a sufficient amount of oil returned to a compressor even if the flow rate of refrigerant is decreased...
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6455964 |
Microturbine cooling system
A microturbine engine core with gas bearings used to support a rotating group is provided, including methods of optimizing the engine core's performance. It is emphasized that this abstract is...
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6434958 |
Ambient humidity compensation method for a vehicle climate control system
The control settings of a vehicle climate control system are adjusted in accordance with a relative ambient humidity correction to compensate for variations in relative ambient humidity, and the...
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6427465 |
Compressor control system and method
An apparatus and system for manipulating the air temperature within an interior compartment of a vehicle, the apparatus cycles a compressor between an off and on position based upon a temperature...
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6393849 |
Air-conditioning apparatus and control procedure for variable displacement compressor
An air-conditioning apparatus having a refrigerant circuit including a condenser, a pressure reducing device, an evaporator, and a variable displacement compressor. The air-conditioning apparatus...
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6392552 |
Weak cooling/overcooling compensation device for refrigerator
The device for compensating a weak cooling/overcooling for a cooling chamber of a refrigerator has a plurality of resistances connected in series between the power and ground and a plurality of...
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6385982 |
Air conditioning apparatus
An air-conditioning system with a refrigerant circulation circuit, which has improved control precision for maintaining a compartment temperature and improved response characteristics. The...
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6385979 |
Displacement control apparatus and method for variable displacement compressor
A control valve is located in a variable displacement compressor used in a refrigerant circuit. The control valve operates such that the pressure difference between two pressure monitoring points...
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6202431 |
Adaptive hot gas bypass control for centrifugal chillers
An adaptive control apparatus and a method for automatically controlling a refrigeration system as a function of cooling load and head. A control panel controls the operation of a hot gas bypass...
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6192696 |
Refrigerating apparatus
In a refrigerating apparatus using a non-azeotropic refrigerant, the composition is included among the quantities of state of a refrigerant, so that it is difficult to detect the state of the...
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6138468 |
Method and apparatus for controlling variable displacement compressor
A variable displacement compressor in a refrigeration circuit using carbon dioxide refrigerant. The compressor changes the inclination of a swash plate located in a control chamber in accordance...
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6092380 |
Method for regulating the cooling performance of an air conditioning system
In a method for the temperature regulation of an air conditioning system having a condenser, an evaporator, an expansion device and a compressor, the stroke of which can be set via a valve, the...
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6076367 |
Variable speed liquid refrigerant pump
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6027031 |
Method and apparatus for changing operational modes of a transport refrigeration system
A method and apparatus for changing operational modes of a transport refrigeration unit, where the unit is capable of operating in a continuous heating/cooling mode or an automatic start/stop...
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6006528 |
Air conditioning system
In an air conditioning system for circulating a fluid which can change a phase between a gas phase and a liquid phase by a difference of a specific gravity between the gas phase and the liquid...
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5950443 |
Compressor minimum capacity control
A method of controlling compressor minimum capacity. The method comprises the steps of: measuring a first condition; comparing the first condition to a first setpoint to determine a first...
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5929591 |
Air conditioner
For achieving an air conditioner being applicable to various a-c source voltages in common and operative with high power factor by suppressing generation of high harmonics, an a-c source voltage...
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5907953 |
Temperature controlling method and apparatus for refrigerator using velocity control of rotary blade
A temperature controlling method and apparatus for a refrigerator by controlling the velocity of a rotary blade are provided. In the temperature controlling method, a fuzzy model for inferring an...
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5901560 |
Process for operating a motor vehicle air conditioner having a protective compressor switch-off function
A process for operating a motor vehicle air conditioner, which contains a refrigerant circulating system with a compressor and an evaporator. The compressor is deactivated to protect against an...
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5899084 |
Method and apparatus for ripening perishable products in a temperature-controlled room
A ripening room is disclosed for ripening perishable products, such as fruits and vegetables, and more particularly bananas, in which the air flow and temperature are closely controlled by the room...
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5862669 |
Thermoelectric water chiller
A thermoelectric water chiller system for cooling fluids, and including a cold sink which defines quiescent areas where convection currents are minimized to facilitate ice formation around the cold...
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5857348 |
Compressor
A centrifugal type refrigerant compressor comprises at least one impeller (17, 18), electric motor (27) and drive shaft (22) mounted on non-lubricated radial bearings, such as magnetic or foil gas...
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5850969 |
Method for controlling temperature in a refrigerator when a temperature sensor operates abnormally
A method for controlling the temperature of a compartment of a refrigerator, the compartment utilizing at least two spaced apart temperature sensors, such that, even when one of the sensors...
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5765383 |
Automobile air-conditioner having improved control characteristics
In an automobile air-conditioner comprising a compressor with variable discharge capacity for compressing a refrigerant, an outlet temperature sensor for sensing an outlet temperature at an outlet...
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5749237 |
Refrigerant system flash gas suppressor with variable speed drive
The invention entails the use of a positive displacement pump (4) magnetically coupled to an drive motor (42) located in a conduit arrangement (60) this is parallel to the liquid line of the...
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5743104 |
Temperature controlling method for refrigerator and apparatus therefor
A temperature controlling method for a refrigerator and an apparatus therefor are provided, in which a sensing error between temperature sensors is corrected, thereby maintaining the interior...
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5611211 |
Refirgeration system with electrically controlled refrigerant storage device
An energy-efficient refrigeration system includes an electrically controlled refrigerant storage device that is coupled to the refrigeration system to selectively receive refrigerant from and...
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5578753 |
Humidity and/or temperature control device
A humidity control device includes a microcontroller, a variable impedance humidity sensing circuit and a zero crossing detector circuit. The humidity sensing circuit and zero crossing circuit are...
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5572879 |
Methods of operating a refrigeration unit in predetermined high and low ambient temperatures
A method of controlling refrigerant pressure during elevated ambient temperature conditions in a refrigeration unit having a refrigerant compressor driven by a prime mover, and controllable suction...
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