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8091377 |
Simultaneous heating/cooling multi air conditioner
A heat pump capable of performing heating and cooling simultaneously is provided. The heat pump includes a compressor, indoor devices that heat or cool an indoor space, outdoor heat exchangers, and...
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8011196 |
Refrigerant control of a heat-recovery chiller
A chiller includes a main condenser that has a refrigerant condensate sump with an internal weir or standpipe that maintains at least a minimum liquid seal between the outlets of the main condenser...
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7987685 |
Refrigerant cycle device with ejector
A refrigerant cycle device includes a branch portion for branching a flow of refrigerant discharged from a compressor, a first radiator for radiating one high-temperature and high-pressure...
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7980087 |
Refrigerant reheat circuit and charge control with target subcooling
A refrigerant system for cooling a comfort zone is selectively operable in a cooling-only mode and a reheat mode. The system operates in the cooling mode to meet sensible and latent cooling demands...
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7921655 |
Topping cycle for a sub-ambient cooling system
According to one embodiment of the disclosure, a cooling system for a heat-generating structure comprises a heat exchanger, a first structure, a condenser heat exchanger, and a second condenser....
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7903414 |
Air volume control module for vehicular air conditioning apparatus
An air volume control module for use with a vehicular air conditioning apparatus includes a circuit board including a control circuit for controlling the rotational speed of the blower of the...
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7845185 |
Method and apparatus for dehumidification
An HVAC system including a compressor, a condenser and an evaporator arrangement connected in a closed refrigerant loop. The evaporator arrangement includes a plurality of refrigerant circuits. The...
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7819179 |
Temperature control apparatus
A temperature control apparatus including a temperature control head kept in contact with an electronic device as a testing object thermally, an electric heater attached to the temperature control...
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7797955 |
Supercritical cycle and expansion valve used for refrigeration cycle
A supercritical cycle comprises an evaporator, a compressor, a gas cooler and a main valve portion of an expansion valve arranged in that order. An internal heat exchanger is arranged for...
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7793711 |
Vehicle air conditioner
A vehicle air conditioner includes an air-conditioning ECU. The air-conditioning ECU performs a cooling mode operation in which air is cooled by an interior heat exchanger in a cooling...
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7765820 |
Thermal control system and method
A system and method for controlling the temperature of a process tool uses the vaporizable characteristic of a refrigerant that is provided in direct heat exchange relation with the process tool....
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7726138 |
Water production system for making potable water
A water production system (1) for making potable water (7) in an environment of humid tropical air (6) and cold deep ocean water (8) comprising a heat exchanger (2), means for controlling (3) the...
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7681410 |
Ice thermal storage
A system, configured to be disposed in a information technology equipment rack for providing ice thermal storage, includes a tank configured to hold water, a heat exchanger disposed in water in the...
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7673463 |
Cooling system methods and apparatus for a refrigeration device
A refrigerator includes a housing defining at least one chamber and a condenser system in which a refrigerant flows. The condenser system includes a condenser, a switching device, and a hot gas...
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7640762 |
Refrigeration apparatus
A refrigeration apparatus includes two sub passages which are branched from a main passage located between a condenser and an expansion part and which are connected to a compressor. On the sub...
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7637114 |
Temperature-adjusting unit, substrate processing apparatus with the unit, and method of regulating temperature in the apparatus
A substrate processing apparatus includes: a processing room in which a semiconductor substrate may be treated by a process; a cooling unit positioned to cool the processing room, the cooling unit...
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7574869 |
Refrigeration system with flow control valve
A control valve to regulate flow of refrigerant through a refrigeration system that includes a plurality of refrigerated display cases. Each of the plurality of display cases includes a dedicated...
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7559207 |
Method for refrigerant pressure control in refrigeration systems
A method and system for controlling refrigerant pressure in an HVAC system. The method includes providing a compressor, a condenser and an evaporator connected in a closed refrigerant loop. The...
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7530390 |
Air conditioner for a motor vehicle
The invention relates to an air conditioner for a motor vehicle, comprising a coolant circuit (1) that is provided with several heat-transferring devices through which a coolant can be directed, a...
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7503183 |
Two phase or subcooling reheat system
A method for removing humidity from air comprising the steps of providing an air conditioning system comprising a continuous circuit through which a refrigerant flows from a compressor, through a...
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7478540 |
Methods of freezeout prevention and temperature control for very low temperature mixed refrigerant systems
Refrigerant freezeout is prevented, and temperature is controlled, by the use of a controlled bypass flow that causes a warming of the lowest temperature refrigerant in a refrigeration system that...
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7454919 |
Hot-water supply apparatus
Defrosting operation is possible by causing refrigerant discharged from a compressor to flow to an outdoor heat exchanger, and returning the refrigerant passed through the outdoor heat exchanger to...
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7434415 |
System and method for using hot gas reheat for humidity control
A humidity control method is provided for a multi-stage cooling system having two or more refrigerant circuits that balances humidity control and cooling demand. Each refrigerant circuit includes a...
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7426837 |
Refrigerator
A refrigerator includes a compressor compressing a refrigerant, a first liquid heat exchanger performing heat exchange between the refrigerant and a first liquid heat medium, an expander expanding...
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RE40499 |
Pulsed flow for capacity control
Step control in capacity modulation of a refrigeration or air conditioning circuit is achieved by rapidly cycling a solenoid valve in the suction line, economizer circuit or in a bypass with the...
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7415835 |
Thermal control system and method
A system and method for controlling the temperature of a process tool uses the vaporizable characteristic of a refrigerant that is provided in direct heat exchange relation with the process tool....
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7395674 |
Air conditioner
An air conditioner has a heat source refrigerant circuit, utilization refrigerant circuits, a pressurizing circuit, and a cooler. The heat source refrigerant circuit is configured by an...
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7353659 |
System and method for controlling an economizer circuit
A control algorithm for controlling an economizer circuit in a chiller system is provided. The control algorithm opens and closes a port valve in the economizer circuit in response to predetermined...
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7350368 |
Stationary vehicle air conditioning system
The invention pertains to a stationary vehicle air conditioning system with a refrigerant circuit, in which at least one compressor circulates the refrigerant to at least two condensers. The at...
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7331189 |
Cooling device
In a cooling system having a compressor for supplying refrigerant under pressure, a condenser for condensing the refrigerant supplied from the compressor, a liquid receiver arranged to temporarily...
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7302807 |
Refrigerating cycle device
In a refrigerating cycle device using carbon dioxide as a refrigerant, there exists a problem that the provision of a receiver at a low-pressure side increases cost and volume due to a pressure...
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7243500 |
Heat exchanger and temperature control unit
Systems and methods for heat exchange in accordance with the invention define adequately long-interchange distances for two fluids by wrapping a tube containing a first fluid about the wall of an...
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7228708 |
Multi-temp system with tandem compressors and reheat function
A tandem compressor system is disclosed that delivers compressed refrigerant to a common discharge manifold, and then to a common condenser. From the common condenser, the refrigerant passes to a...
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7207379 |
Automotive air conditioning system
An automotive air conditioning system comprising a main heating unit 4 for heating air passing through an air conditioning duct 2 with cooling water of an engine E and a refrigeration cycle device...
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7197889 |
Cooling unit
A cooling unit wherein devices are divided so as to be installed in each of an outdoor unit and indoor unit, for downsizing the indoor unit and reducing its pipe-line cost. The cooling unit...
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7182129 |
Device for heating and/or air-conditioning the passenger compartment of a motor vehicle
A device for air-conditioning a motor vehicle has an engine-cooling loop, a heat-pump loop containing a compressor, an evaporator as cold source of the heat pump and a condenser as hot source of...
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7171817 |
Heat exchanger liquid refrigerant defrost system
A heat exchanger liquid refrigerant defrost system disclosed herein specifically designed to defrost the coil subsystems used on an outdoor heat exchanger used on a building heat pump unit or...
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7168257 |
Rotary compressor, method for manufacturing the same, and defroster for refrigerant circuit
An object of the present invention is to provide a method for manufacturing a multi-stage compression type rotary compressor which can avoid the replacement of parts to be used as much as possible...
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7155920 |
Refrigerant cycle with tandem compressors and multiple condensers
A tandem compressor system is utilized that receives refrigerant from a common suction manifold, and from a common evaporator. From the compressors, the refrigerant passes to a plurality of...
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7143594 |
Control method for operating a refrigeration system
A method of controlling a heating cycle of a refrigeration system is provided that includes a refrigerant circuit. The refrigerant circuit includes a compressor having a suction port and an outlet...
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7137270 |
Flash tank for heat pump in heating and cooling modes of operation
A heat pump design with an economizer flash tank provides an efficient way to operate the system in both heating and cooling modes. Various expansion device types can be employed with this design....
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7131285 |
Refrigerant cycle with plural condensers receiving refrigerant at different pressure
A refrigerant cycle is provided with a compressor system, capable of simultaneously delivering refrigerant to multiple condensers operating at different temperature levels. A single evaporator...
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7080520 |
Air conditioning system
The invention is based on a climate control system for a vehicle that is driven by an internal combustion engine (10), having a heating heat exchanger (24) which is connected to a coolant loop (12)...
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7062930 |
System and method for using hot gas re-heat for humidity control
A humidity control method is provided for a multi-stage cooling system having two or more refrigerant circuits. A hot gas re-heat circuit having a hot gas re-heat coil is connected to one of the...
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7063137 |
Heat pump with secondary loop air-conditioning system
A chiller-condenser is disposed downstream of a condenser and a chiller-evaporator is disposed downstream of the chiller-condenser. A main three-way valve is disposed between the compressor and the...
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7059144 |
Methods of freezeout prevention for very low temperature mixed refrigerant systems
Refrigerant freezeout is prevented by the use of a controlled bypass flow that causes a warming of the lowest temperature refrigerant in a refrigeration system that achieves very low temperatures...
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7055590 |
Air conditioning apparatus for vehicle
An air conditioning apparatus includes a valve for selectively introducing the coolant discharged from a compressor to either a flow path for a water-coolant heat exchanger or another flow path to...
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7048044 |
Heat control system
There are provided a water-refrigerant heat exchanger 30 for exchanging heat between refrigerant discharged from a compressor 21 and engine-cooling water circulating an engine-cooling water circuit...
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7043928 |
Refrigeration cycle system
A refrigeration cycle system is disclosed. Upon generation of a start signal for a hot gas heater cycle, the cooling mode is first started thereby to start the dormant refrigerant recovery mode...
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7028492 |
Hybrid dehumidication system
A hybrid dehumidification system includes a compressor, a condenser, an expansion device and an evaporator connected for flow of working fluid through a fluid circuit; a reheat coil positioned...
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