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7610766 |
High-speed defrost refrigeration system
A defrost refrigeration system of the type having a main refrigeration circuit operating a refrigeration cycle. The defrost refrigeration system comprises a first line extending from the first...
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7607313 |
Vehicle HVAC system
A HVAC system and method for a vehicle is disclosed. The air conditioning portion of the HVAC system may be able to store and release refrigerant in charge bottle while operating in an air...
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7607314 |
Air conditioning system
An air conditioning system includes an evaporator, a compressor, a condenser, a valve an energy recovery device and at least one bypass passage. The compressor is fluidly connected to the...
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7581409 |
Cooling system and method
The present invention related to cooling systems. More specifically, the present invention relates to a system for cooling one or more parts of a building and or processes comprising a compressor,...
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7574874 |
Vapor compression heat pump system
A compression refrigeration system that includes a compressor, a heat rejector, expansion means and a heat absorber connected in a closed circulation circuit that may operate with supercritical...
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7506518 |
Refrigeration device and method for detecting refrigerant amount of refrigeration device
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...
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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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7478541 |
Compact refrigeration system for providing multiple levels of cooling
A refrigeration system for use in cooling electronic equipment includes a closed vapor compression circuit having operably disposed therein a compressor, a condenser, a first expansion device, a...
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7441413 |
Refrigerator and control method thereof
A refrigerator and a control method thereof in which a smooth flow of a refrigerant can be provided through an effective control for a path change valve when a flow path of the refrigerant is...
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7434414 |
Refrigeration apparatus
A refrigerant circuit ( 10 ) of a refrigeration apparatus is filled up with carbon dioxide as a refrigerant. In the refrigerant circuit ( 10 ), a first compressor ( 21 ) and a second compressor (...
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7377119 |
Air conditioning system and control method thereof
An air conditioning system includes an indoor heat exchanging unit, an outdoor heat exchanging unit, a compressor forming a closed loop together with the indoor and outdoor heat exchanging units to...
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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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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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7325411 |
Compressor loading control
A system has a number of parallel flowpath segments between a compressor and an evaporator. One or more valves selectively block and unblock at least one of the segments to provide capacity control.
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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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7225630 |
Refrigerating cycle apparatus, air conditioning apparatus, throttle device and flow controller
In a refrigerating cycle incorporating a second flow controller having a throttle section, which is composed of an inlet noise eliminating space 19 , an inlet side porous permeable member 20 ...
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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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7171825 |
Refrigeration equipment
A refrigeration equipment includes a vapor compression type of refrigerant circuit that prevents a decline in refrigeration ability in user side heat exchangers when the refrigerant condensed by a...
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7171818 |
System and method for controlling temperature of refrigerant in air conditioner
There is provided a system and method for controlling a temperature of a refrigerant in an air conditioner, in which a supercooling degree and/or a superheating degree can be secured by controlling...
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7143593 |
Refrigerant cycle apparatus
There is disclosed a refrigerant cycle apparatus capable of avoiding occurrence of an abnormal rise in a pressure on a high-pressure side in advance, comprising: a throttling mechanism including a...
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7093460 |
Cooling circuit apparatus and method
A cooling circuit through which coolant flows, for use with a refrigerated cabinet. The cooling circuit includes a compressor and a condenser with a flow path extending there between. The cooling...
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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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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 (S...
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6997000 |
Refrigeration system and method of operation therefor
The object of the present invention is to prevent refrigerant from flowing out into a vehicle compartment due to damage to an evaporator or piping associated therewith. A solenoid valve is arranged...
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6973797 |
Capacity control for economizer refrigeration systems
An economizer-equipped refrigeration system and method is provided for simultaneous operation of at least one capacity control valve controlling an independent bypass circuit with operation and...
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6966365 |
Outflow prevention device
To provide an outflow prevention device which is capable of preventing refrigerant from flowing out into a vehicle compartment even when an evaporator has ruptured. The outflow prevention device...
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6955059 |
Vapor compression system
A vapor compression system includes a main vapor compression circuit including a compressor, a condenser, an expansion device and an evaporator serially connected by main refrigerant lines, the...
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6955058 |
Refrigerant cycle with tandem economized and conventional compressors
A refrigerant cycle is provided with tandem compressors. Only some of the multiple compressors are provided with an economized cycle, and an optional unloader valve for selectively returning flow...
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6928828 |
Tandem compressors with economized operation
A refrigerant cycle includes economized tandem compressors. The refrigerant cycle is also provided with a common economizer circuit for all tandem compressors. Common manifolds communicate...
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6918264 |
Multi-type air conditioner
Multi-type air conditioner including an outdoor unit having a compressor, an outdoor heat exchanger, a flow path control valve for controlling a flow path of the refrigerant from the compressor, an...
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6914354 |
Assembly and method for direct cooling of motor end-winding
Methods and related systems providing removal of heat from electric motors via fluid baths.
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6913076 |
High temperature heat pump
A high temperature heat pump comprising a low temperature heat exchanger to produce vapor of a first fluid from heat transferred from a second fluid to a mixture of liquid and vapor of the first...
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6898944 |
Air conditioner
In the air conditioner of the present invention, both the normal cooling mode operation, in which refrigerant discharged from the compressor 1 is made to flow in the condenser 2 , and the...
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6895768 |
Refrigerant circuit
Disclosed is a refrigerant circuit which comprises a compressor ( 15 ), a water heat exchanger ( 16 ), a receiver ( 18 ), an expansion valve ( 19 ), and an evaporator ( 20 ). In the refrigerant...
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6868679 |
Ejector cycle system
In a hot gas heating mode of an ejector cycle system, hot gas refrigerant discharged from a compressor is introduced to an interior heat exchanger while bypassing an exterior heat exchanger. The...
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6854283 |
Determining method of high pressure of refrigeration cycle apparatus
It is an object of the present invention to reduce the constraint that the density ratio is constant as small as possible, and to obtain high power recovering effect in a wide operation range by...
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6775998 |
Freezer and refrigerator provided with freezer
Respective evaporators are set to a proper value in evaporation temperature and the efficiency in refrigeration cycle is enhanced, resulting in a reduction of energy consumption. A refrigerating...
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6758052 |
HVAC system with post-shut down isolation and venting of evaporator using H-shaped valve
An air conditioning system for a vehicle including an integral valve block ( 32 ) having a liquid line bore ( 42 ) extending therethrough and a suction line bore ( 44 ) extending therethrough with...
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6755039 |
Screw refrigerating apparatus
A screw refrigerating apparatus comprising a refrigerant circulating passage including a screw compressor, a condenser, an expansion valve, and an evaporator is constituted such that a bypass flow...
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6751967 |
Multifunction air conditioning device
An air conditioning device includes a compressor coupled between a condenser and an evaporator, a capillary tube device and a valve device are coupled in parallel to each other and coupled between...
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6742346 |
Method for operating an air conditioning installation
The invention is based on a method for operating a climate control system for a vehicle, in the case of which a compressor ( 38 ), in a cooling mode, circulates a coolant through a gas condensing...
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6701730 |
Refrigerating apparatus, refrigerator, air-cooled type condenser unit for refrigerating apparatus and compressor unit
In a refrigerating apparatus using an HFC group refrigerant, the performance is improved by increasing the refrigerating capacity and a stable operation is made possible. In order to achieve this,...
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6675594 |
Cooling system and cooling method
A cooling system, which includes a compressor for compressing the refrigerant by operation of a motor, a condenser, an expansion means, and an evaporator, comprises a motor cooling device for...
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6675609 |
Refrigerant cycle system with ejector pump
In a refrigerant cycle system with an ejector pump, refrigerant to be introduced into a nozzle of the ejector pump is heated in a heat exchanger using waste heat from a vehicle engine as a heating...
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6672088 |
Self-contained regulating valve, and compression type refrigerating machine having the same
A self-operated regulating valve has a spool ( 13 ) moving axially in an internal space of a cylindrical valve body ( 11 ). One pressure P 1 acts on one end surface of the spool ( 13 ), and other...
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6668569 |
Heat pump apparatus
A heat pump apparatus, improved in the operational reliability of its compressor and maintaining its COP at a desired level, is disclosed. The basic refrigeration circuit of the apparatus consists...
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6662576 |
Refrigeration system with de-superheating bypass
A refrigeration system includes a compressor, a condenser, an expansion device and an evaporator connected in a closed circuit through which a refrigerant is circulated. A portion of liquid...
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6651451 |
Variable capacity refrigeration system with a single-frequency compressor
A variable capacity refrigeration system which does not require a costly inverter compressor and does not exhibit low energy efficiency at high capacity. The system employs a constant speed...
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6615599 |
Thermostatic expansion valve and air conditioning system for low refrigerant charge
A thermostatic expansion valve controls a flow of refrigerant. The valve includes a body defining a fluid chamber. A refrigerant inlet is defined within the body. The inlet communicates with the...
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