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Refrigeration > Automatic Control > Withdrawing Or Adding Refrigerant From Or To Normally Closed System Withdrawing Or Adding Refrigerant From Or To Normally Closed SystemWithdrawing Or Adding Refrigerant From Or To Normally Closed System patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/08/07 - 20070256434 - Monitoring system for detecting low-charge condition in a heat-exchange system A monitoring system for detecting a low-charge condition in a heat-exchange system is provided. The monitoring system has a first set of sensors located at the outlet of a compressor of the heat-exchange system. The first set of sensors monitor a plurality of first parameters. Based on the plurality of ... 06/07/07 - 20070125102 - 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 temperature in the liquid line of the condenser discharge, with the difference then being indicative of ... 05/17/07 - 20070107448 - Helium management control system A helium management control system for controlling the helium refrigerant supply from a common manifold supplies a plurality of cryogenic refrigerators with an appropriate helium supply. The system employs a plurality of sensors to monitor and regulate the overall refrigerant supply to deliver an appropriate refrigerant supply to each of ... 03/01/07 - 20070044489 - Method for controlling amount of refrigerant of dual type unitary air conditioner A method for controlling the amount of a refrigerant of a dual type unitary air conditioner, which has a plurality of centralized warm and cold air circulators and at least one individual warm and cold air circulator, includes inputting the operation capacity of compressors of an outdoor unit of the ... 02/15/07 - 20070033954 - Driving controlling apparatus for air conditioner having plural compressors and method thereof A driving controlling apparatus for an air conditioner having a plurality of compressors, and a method thereof. The apparatus comprises a flow amount distribution resistor installed at an outlet of an expansion valve, for passing a certain amount of refrigerant; and a controlling unit for detecting a current load and ... 02/01/07 - 20070022764 - Ammonia recycling still for a refrigeration system and method therefor An ammonia still apparatus of the invention is used to reclaim ammonia from contaminated ammonia refrigeration fluid in an ammonia refrigeration system. The ammonia still apparatus is used in fluid communication with the ammonia refrigeration system and can be run manually or automatically using an electronic controller, such as a ... 10/26/06 - 20060236705 - Refrigerant charging system and method using cartridges and scale A refrigerant charging system and method for charging a refrigeration system with refrigerant includes a refrigerant source, one or more cartridges, an input line, an output line, and a scale preferably having an accuracy within about ±0.2 ounce. The cartridge is filled with refrigerant by transferring the refrigerant from the ... 08/17/06 - 20060179854 - Refrigerant tracking/leak detection system and method A refrigeration system includes a mass of refrigerant, a reservoir containing a first portion of the mass of refrigerant, and a condenser containing a second portion of the mass of refrigerant. A first sensor is positioned to measure a first parameter of the reservoir and output a first signal indicative ... 07/27/06 - 20060162353 - Multi-type air conditioner for simultaneous heating and cooling use and method for withdrawing refrigerant therefrom According to the multi-type air conditioner for simultaneous heating and cooling use and the method for withdrawing refrigerant therefrom, the refrigerant withdrawing device is provided between the plural outdoor units, refrigerant in the malfunctioning outdoor unit is withdrawn to the other outdoor units and the other outdoor units are normally ... 06/29/06 - 20060137370 - 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 the condenser coil and the outdoor temperature are sensed and representative electrical signals are generated. The electrical signals are converted to ... 06/29/06 - 20060137369 - Single sensor three-step refrigerant charge indicator A method and apparatus for determining the sufficiency of refrigerant charge in an air conditioning system using a single temperature sensor for sensing three different temperatures within the system to compute a condenser approach temperature difference, which in then compared with a predetermined optimal condenser approach temperature difference to indicate ... 06/29/06 - 20060137368 - Visual display of temperature differences 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 either the outdoor temperature or the condenser coil temperature. In one embodiment the two sensed temperatures are displayed ... 06/29/06 - 20060137367 - 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 either the outdoor temperature or the condenser coil temperature. In one embodiment the two sensed temperatures are displayed ... 06/29/06 - 20060137366 - Automatic refrigerant charging apparatus An air conditioning system includes a plurality of sensors for sensing temperature and/or pressure conditions of the system which collectively indicate the actual refrigerant charge level in the system. This level is then compared with optimum level values that are stored in memory, and the difference between the two is ... 06/15/06 - 20060123810 - Method for operating air conditioner Disclosed herein is a method for operating an air conditioner which is capable of achieving the effective operation of a plurality of indoor units. The method comprises the steps of: a) receiving operating state information of the indoor units connected to one outdoor unit; b) determining whether or not the ... 06/15/06 - 20060123809 - Control method of an air conditioner indoor unit A control method of a multi-air conditioner in which a plurality of indoor units is connected to one outdoor unit and refrigerant flow amount is adjusted by electronic expansion valves comprises a share step in which a plurality of indoor units exchanges their operation information, a comparison and judgment step ... 06/08/06 - 20060117767 - System and method for verifying proper refrigerant and airflow for air conditioners and heat pumps in cooling mode An apparatus for the diagnosis of a cooling system which receives inputs in the form of data about a cooling system, and measurements made from the cooling system, and which then calculates the amount of refrigerant to be removed or added to the cooling system for optimal performance. In addition, ... 05/18/06 - 20060101835 - Refrigerant charging by optimum performance A charging system for charging a refrigeration system of a vehicle includes a controller, a refrigerant source, at least one line fluidly connecting the refrigerant source to the refrigeration system; a control valve disposed to control flow of the refrigerant from the refrigerant source to the refrigeration system, and an ... 05/18/06 - 20060101834 - Refrigerant charging system and method using vapor-phase refrigerant A refrigerant charging system and method for charging a refrigeration system with a vapor-phase refrigerant includes a refrigerant source, an input line, a sensor and a pressure regulator. The input line connects the refrigerant source to the refrigeration system. One or more valves are disposed between the refrigerant source and ... 04/27/06 - 20060086108 - Refrigerant containment vessel with thermal inertia and method of use A vapor compression system including a closed fluid circuit having operably coupled thereto, in serial order, a compressor, a first heat exchanger, an expansion device, a second heat exchanger and a fluid vessel. The refrigerant is compressed in the compressor and circulated through the fluid circuit. Thermal energy is removed ... 04/13/06 - 20060075763 - Apparatus for controlling refrigerant level An apparatus for controlling a refrigerant level comprises a first detecting unit installed at a lower side of the inside of a refrigerant tank, for detecting whether a refrigerant stored at a lower side of the inside of the refrigerant is a liquefied refrigerant or a gaseous refrigerant, a second ... 03/30/06 - 20060064995 - Charge management for 100% heat recovery units An apparatus for managing refrigerant charge in an air conditioning unit comprising a cooling circuit through which a refrigerant flows from a compressor, through a condenser, and through an evaporator, a heat recovery circuit extending from a first terminus between the compressor and the condenser to a second terminus between ... 01/19/06 - 20060010889 - Arrangement and method for controlling the discharge of carbon dioxide for air conditioning systems A method and system for discharging refrigerant, such as carbon dioxide, from an air conditioning system. The discharge rate of the refrigerant from the air conditioning system is controlled by a discharge rate controller, even as refrigerant pressure at the system input varies. By maintaining discharge rate at a controlled ... 01/19/06 - 20060010888 - Refrigerant charging system and method with cartridges A refrigerant charging system and method for charging a refrigeration system with refrigerant includes a refrigerant source, one or more cartridges, an input line, a scale, a pressure sensor and a temperature sensor. The input line connects the refrigerant source to the cartridge. A valve is disposed between the refrigerant ... 11/17/05 - 20050252221 - Refrigeration system and method for detecting quantity of refrigerant of refrigeration system In a refrigeration device including a refrigeration circuit having a compressor and a receiver, the present invention will improve the ability of a liquid level detection circuit to accurately determine whether or not liquid refrigerant is stored up to a predetermined position of the receiver. An air conditioner includes a ... 10/20/05 - 20050229613 - Refrigerant monitoring system and method A system for monitoring the amount of refrigerant supplied from a refrigerant tank to a plurality of refrigerant systems comprising a tank valve for connection to a refrigerant tank at a predetermined location. A rack of refrigerant rack lines is routed from the location to the refrigerant systems for connecting ... 10/20/05 - 20050229612 - Compression cooling system and method for evaluating operation thereof A method for evaluating operation of a compression cooling system includes the steps of: (a) in no particular order: (1) measuring a first temperature of the refrigerant in a saturated state; and (2) measuring a second temperature of the refrigerant in a liquid state; and (b) calculating a difference between ... 10/06/05 - 20050217285 - Apparatus and method for servicing a coolant system An apparatus, system and method for servicing a coolant system, such as, an automobile air conditioner are disclosed. In one embodiment, the apparatus may comprise a device for measuring a parameter of the coolant system; and means for selectively switching between providing: (i) communication between the coolant system and said ... 09/29/05 - 20050210894 - Refrigerant relief device To provide a refrigerant relief device which releases refrigerant in a refrigeration cycle to the outside of a vehicle compartment, when the refrigerant releases into the vehicle compartment, or when there is a fear that the refrigerant releases into the vehicle compartment. A metal thin film is welded in advance ... 09/22/05 - 20050204756 - Monitoring refrigerant charge An air conditioning, heating or refrigeration system includes a controller that automatically determines if refrigerant amount is above or below the desired amount within the system. In one example, a sensor measures the temperature difference between sub-cooled liquid and saturated condensing temperature and provides information to the controller. The controller ... 06/23/05 - 20050132729 - Transcritical vapor compression system and method of operating including refrigerant storage tank and non-variable expansion device A transcritical vapor compression system includes a fluid circuit circulating a refrigerant in a closed loop. The fluid circuit has operably disposed therein, in serial order, a compressor, a first heat exchanger, at least one non-variable expansion device and a second heat exchanger. The compressor compresses the refrigerant from a ... 06/23/05 - 20050132728 - refrigerant system pressure control for storage and transportation An air conditioning or refrigeration system includes an attached refrigerant receptacle associated with the system. During shipment or storage, the pressure within the system may exceed a selected threshold for the low pressure side. Under such circumstances, a pressure relief device automatically allows refrigerant to flow from the system into ... 06/02/05 - 20050115253 - Method for extracting carbon dioxide for use as a refrigerant in a vapor compression system Carbon dioxide refrigerant is circulated through a vapor compression system including a compressor, a gas cooler, an expansion device, and an evaporator. Carbon dioxide is extracted from a vehicle exhaust stream that includes combustion products of burned hydrocarbon fuel. The extracted carbon dioxide is used to supplement the initial supply ... ### FreshPatents.com Support |