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WO/2007/133289 |
In a chiller system, an electronic control transformer is powered by the DC link of a variable speed drive that drives a compressor motor. The electronic control transformer converts the DC voltage to a constant 120 VAC at 60 Hz, for pro...
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WO/2007/133289 |
In a chiller system, an electronic control transformer is powered by the DC link of a variable speed drive that drives a compressor motor. The electronic control transformer converts the DC voltage to a constant 120 VAC at 60 Hz, for pro...
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WO/2007/125959 |
A separated-type air conditioner (1) where the labor of inputting information on refrigerant connection piping before starting operation of the air conditioner is reduced and where whether the amount of refrigerant in a refrigerant circu...
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WO/2007/126055 |
It is possible to suppress temperature increase in a machine room due to insufficient ability of an indoor unit even during a coolant amount detection operation and prevent generation of trouble in a machine room device. An air condition...
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WO/2007/125951 |
An air conditioner where whether the amount of refrigerant in a refrigerant circuit is adequate is highly accurately determined with a calculation load suppressed. The air conditioner (1) has the refrigerant circuit (10) formed by interc...
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WO/2007/123795 |
A system and method of controlling components of a refrigeration system includes determining a desired rate of change of a refrigeration system operating parameter, using historical data to predict an expected rate of change of the opera...
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WO/2007/123795 |
A system and method of controlling components of a refrigeration system includes determining a desired rate of change of a refrigeration system operating parameter, using historical data to predict an expected rate of change of the opera...
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WO/2007/123088 |
A compressor (20) and an expander (30) are provided in the refrigerant circuit (11) of an air conditioner (10). In the compressor (20), a refrigerating machine oil is fed from an oil reservoir (27) into a compression mechanism (21). In t...
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WO/2007/123529 |
A diagnostic method for testing a fan or pump assembly in a refrigerant system includes steps of operating a controller to periodically shut down, or reduce fan or pump speed for a short period of time, while continuing to operate the re...
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WO/2007/123528 |
A refrigerant system control software upgrades are remotely downloaded over information carrying media. The software upgrades can be timed to occur when the Internet traffic is low. Once the upgrade has been received, a verification test...
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WO/2007/120264 |
A chiller system includes a switched reluctance motor for powering the compressor of the chiller system. A variable speed drive with a boost converter provides a boosted voltage to the switched reluctance motor. The switched reluctance m...
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WO/2007/120264 |
A chiller system includes a switched reluctance motor for powering the compressor of the chiller system. A variable speed drive with a boost converter provides a boosted voltage to the switched reluctance motor. The switched reluctance m...
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WO/2007/120481 |
A controller and method for control of a refrigeration system having a compressor rack operable at a plurality of capacities may include determining a rate of change in suction pressure for a first capacity, determining a rate of change ...
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WO/2007/117247 |
The present invention provides ambient air information to a controller for an HVAC & R system from a remote location, as for example, over the Internet. This eliminates ambient temperature, humidity and/or barometric pressure sensors tha...
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WO/2007/115494 |
A heat pump air condition system, and the steam jet system and the control method thereof. The heat pump air conditioner comprises a four-way valve (13), an indoor heat exchanger (19), an indoor throttle (20), an outdoor throttle (15) an...
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WO/2007/113974 |
An operation history stored in a circuit board prior to replacement is taken over by a replaced circuit board, and the operation history of a device is permitted to be cumulatively updated. In the case of replacing a control circuit boar...
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WO/2007/114180 |
An outdoor unit of air conditioning in which a pressure is displayed and information about refrigerant leakage detecting operation can be displayed easily. The outdoor unit (2) is operated in any one of a normal operation mode and a refr...
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WO/2007/111731 |
A control algorithm is provided for controlling an economizer circuit in a chiller system (100). The control algorithm adjusts the position of a feed valve (114) in the economizer circuit in response to measured system operating paramete...
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WO/2007/111731 |
A control algorithm is provided for controlling an economizer circuit in a chiller system (100). The control algorithm adjusts the position of a feed valve (114) in the economizer circuit in response to measured system operating paramete...
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WO/2007/111594 |
A refrigeration system (20A) comprises an evaporator (27), a plurality of compressors (32, 34, 35) for compressing a refrigerant, a heat rejecting heat exchanger (24) for cooling the refrigerant, and a plurality of economizer heat exchan...
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WO/2007/111595 |
A refrigeration system (20A) comprises an evaporator (27) for evaporating a refrigerant, a two-stage compressor (32) for compressing the refrigerant, a single-stage compressor (34) for compressing the refrigerant, a heat rejecting heat e...
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WO/2007/111586 |
A refrigeration system (20A) comprises an evaporator (27), a two-stage compressor (32) for compressing a refrigerant, a second compressor (34) for compressing the refrigerant, a heat rejecting heat exchanger (24) for cooling the refriger...
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WO/2007/110991 |
The vapor compression refrigerating apparatus of the invention comprises a compressor (2), a condenser (4), a regeneration heat exchanger (6), an expansion means (8), and an evaporator (10) connected in series. The vapor compression refr...
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WO/2007/108537 |
A refrigeration system (10) comprising a refrigerant circuit (20) constituted by connecting circuit components including a compressor (30), pressure reducing means (36, 39), and a plurality of heat exchangers (34, 37), and performing ref...
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WO/2007/108433 |
An air conditioner where a refrigerant amount judged is corrected to reduce a detection error. The air conditioner (1) performs refrigerant-amount judgment operation for judging the amount of refrigerant in a refrigerant circuit (10) and...
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WO/2007/105610 |
This invention provides an air conditioner having the function of extinguishing a fire upon the occurrence of a fire within a room. An air conditioner (1) is an air conditioner for conditioning air within a room and comprises a vapor com...
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WO/2007/106116 |
A suction modulation valve is throttled when conditions in a refrigerant system indicate that an undesirable amount of liquid refrigerant might otherwise be delivered to the compressor. As an example, the throttling would occur at start-...
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WO/2007/105604 |
An air conditioner where the pressure in high-pressure gas piping is reduced to prevent liquid refrigerant stagnation in the high-pressure gas piping caused by condensation. The air conditioner (1) performs refrigerant amount determinati...
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WO/2007/103813 |
A waste energy-based vehicle air conditioning system includes efficient compression driving means coupled to refrigeration means. In one implementation, the compression driving means includes a controller (e.g., magnetic clutch) that cou...
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WO/2007/102889 |
A capacity control algorithm for a multiple compressor liquid chiller system is provided wherein the speed and number of compressors in operation are controlled in order to obtain a leaving liquid temperature setpoint. In response to an ...
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WO/2007/102889 |
A capacity control algorithm for a multiple compressor liquid chiller system is provided wherein the speed and number of compressors in operation are controlled in order to obtain a leaving liquid temperature setpoint. In response to an ...
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WO/2007/103813 |
A waste energy-based vehicle air conditioning system includes efficient compression driving means coupled to refrigeration means. In one implementation, the compression driving means includes a controller (e.g., magnetic clutch) that cou...
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WO/2007/102889 |
A capacity control algorithm for a multiple compressor liquid chiller system is provided wherein the speed and number of compressors in operation are controlled in order to obtain a leaving liquid temperature setpoint. In response to an ...
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WO/2007/098244 |
A temperature sensitive material is transported in an insulated container. The temperature sensitive material is enclosed ii an insulated container comprising a double wall container. The container has a front wall, a rear wall, two side...
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WO/2007/098244 |
A temperature sensitive material is transported in an insulated container. The temperature sensitive material is enclosed ii an insulated container comprising a double wall container. The container has a front wall, a rear wall, two side...
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WO/2007/095685 |
This Invention relates to an industrial process efficiency method and system and relates particularly to a method and system for improving the efficiency and performance of any industrial process when loading is at maximum capacity or un...
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WO/2007/096436 |
The invention relates to a method for controlling the speed of a motor/compressor unit of a refrigerator comprising: a refrigerated enclosure (14); and a thermostat, the operation of which is determined by the surrounding temperature, sa...
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WO/2007/097238 |
Even when an accumulator size is comparatively small, it is possible to suppress degradation of smooth operation due to an excessive coolant remaining in an outdoor unit. An air conditioner (1) includes a plurality of outdoor units (2, 1...
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WO/2007/094343 |
Provided is a separate type air-conditioning apparatus, in which the overheat of a coolant at the exit of an indoor heat exchanger to function as an evaporator can be satisfactorily controlled by an expansion valve even in case the level...
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WO/2007/094349 |
An air conditioner having a function to extinguish a fire when the fire occurs in an electric equipment assembly. The air conditioner (1) comprises a vapor compression type refrigerant circuit (10) in which carbon dioxide is used as a re...
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WO/2007/089344 |
A method of controlling the duty cycle of a pulse width modulated expansion valve in order to achieve low and stable evaporator superheat is disclosed. Duty cycle is incremented/decremented if superheat is above/below a dead band, and, i...
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WO/2007/087992 |
The invention relates to an expansion valve for coolant of an air conditioner circuit for mobile applications such as a motor vehicle. Said expansion valve comprises at least one coolant inlet and outlet (2), functional valve mechanisms ...
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WO/2007/086506 |
An air conditioner where, even if spaces to be air conditioned by the air conditioner have different temperatures, an error of determination of the amount of refrigerant can be reduced. The air conditioner (1) adjusts the temperature of ...
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WO/2007/087248 |
An air conditioning system that comprises a controller that is in electrical communication with a compressor, a condenser fan, a temperature sensor that measures the temperature of the ambient air, a temperature sensor that measures the ...
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WO/2007/086871 |
A refrigerant system has at least one unloader valve selectively communicating refrigerant between the compressor compression chambers and a point upstream of the evaporator. When the compressor is run in unloaded mode, partially compres...
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WO/2007/084866 |
Intelligent refrigerator system for storing pharmaceutical product containers, such as vials, ampules, syringes, bottles, medication tubes, blister packs and cartons, at the point of dispensing. Embodiments of the invention use product i...
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WO/2007/084131 |
A power management system (36) supplies power to a refrigeration unit (20) of a vehicle (22). When a vehicle engine (40) is running, the refrigeration unit receives power from a DC power source (38). When the vehicle engine is not operat...
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WO/2007/084666 |
A method and apparatus for non-invasively determining a charge level of a refrigerant in a vapor-compression cycle system (10). The method and apparatus monitor the system (10) while the system (10) is operated to ascertain that the syst...
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WO/2007/073379 |
A refrigerant vapor compression system for conditioning air within a climate controlled space has multiple refrigerant circuits including at least one refrigerant circuit having a fixed capacity and at least one refrigerant circuit havin...
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WO/2007/069581 |
An air conditioner in which judgment error due to difference in temperature of refrigerant at the outlet of a condenser is reduced at the time of judging whetehr the quantity of refrigerant is appropriate. The air conditioner (1) compris...
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