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7467521 |
Method for controlling multi-type air conditioner
The present invention relates to a method for controlling an air conditioner, in which operation time periods of an outdoor unit is integrated, to determined a time point when an oil recovery...
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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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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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6640568 |
Vehicle air conditioner with arrangement of temperature detector
In a vehicle air conditioner, a temperature sensor is disposed on a tank of an evaporator to contact the tank. In addition, the temperature sensor is disposed at a tank position separated from a...
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6631621 |
Cryogenic temperature control apparatus and method
A method of temperature control in a cryogenic temperature control apparatus comprises providing a heat exchanger in thermal communication with an air-conditioned space. The heat exchanger includes...
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6134900 |
Supercritical refrigerating system
When a compressor is stopped, a refrigerant passage in which refrigerant flows from a radiator to an evaporator is closed by a pressure control valve. Accordingly, even after the compressor is...
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5983656 |
Air conditioning system
An air conditioning system is provided. A driving force is constantly transmitted to a clutchless compressor via a pulley. A condenser causes a high-temperature and high-pressure gaseous...
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5946925 |
Self-contained refrigeration system and a method of high temperature operation thereof
A self-contained refrigeration system utilizes a solenoid valve to meter refrigerant to a thermal process, the thermal process to be maintained at a predetermined temperature. When cooling of the...
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5937657 |
Cooler
A controller is provided for controlling the operation of a Joule-Thomson cooler. When the cooler has cooled down to its operating temperature, the rate of gas flow to the cooler is controlled as a...
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5921090 |
Control method for a cryogenic refrigeration system
A control method is provided for a cryogenic refrigeration system having an evaporator-heater coil, an electronically controlled valve for regulating the amount of cryogen to the coil, and a vapor...
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5797276 |
Methods and devices for energy conservation in refrigerated chambers
Methods and devices for energy conservation to be retrofitted to refrigerated chambers or boxes of the type comprising an insulated chamber and an associated compression-type refrigeration system....
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5522452 |
Liquid cooling system for LSI packages
In a liquid cooling system for a printed circuit board on which integrated circuit packages are mounted, heat sinks are secured respectively to the packages in heat transfer contact therewith....
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5299225 |
Graphitization furnace
A lengthwise graphitization furnace for the conversion of a string of amorphous carbon bodies to graphite has an open semi-cylindrical shell of corrugated steel modules lined with cast refractory....
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5209080 |
Refrigerant flow control device
A cylindrical standpipe extends upwardly from the bottom of a liquid refrigerant sump, and vertical slots are formed in the sides thereof near the bottom end. On the inner sides of the standpipe, a...
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5205131 |
Refrigerator system with subcooling flow control
A vapor compression refrigeration system for cooling a cabinet having a thermostat for cycling the compressor off and on to maintain a predetermined temperature range in the cabinet includes a...
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5156017 |
Refrigeration system subcooling flow control valve
A flow control valve is disclosed in a household refrigeration appliance having a vapor compression refrigeration system comprising a cyclically operated compressor, a condenser, an evaporator and...
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5117439 |
Method for operating an electrode graphitization furnace
The electric furnace operating cycle time is substantially reduced by directing water into the porous pack of carbonaceous material surrounding the electrodes at a water rate adjusted to maximize...
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5088303 |
Migration blocking valve in a refrigerating system
A valve for blocking migration of refrigerant in a system including a compressor having an outlet for the compressed refrigerant and an inlet for the refrigerant to be compressed, the valve having...
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5054292 |
Cryogenic freezer control
Method and apparatus for controlling the cooldown and steady-state operation of a tunnel type cryogenic freezer by providing auxiliary cryogen to one or more gas recirculating zones of the freezer...
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4966006 |
Refrigeration plant and method of controlling a refrigeration plant
The refrigeration plant disclosed herein includes an evaporator, a compressor connected to the outlet of the evaporator, a condenser connected to the outlet of the compressor, a controllable...
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4899547 |
Hot strip mill cooling system
An apparatus and method for cooling a strip of moving metal in a hot strip mill, or the like, is disclosed. The apparatus utilizes an infrared sensor for measuring a temperature profile across a...
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4833892 |
Process and an apparatus for the adjustment or maintenance of a refrigerated atmosphere
The invention relates to a process and an apparatus for the adjustment of maintenance of a refrigerated atmosphere, in particular an atmosphere adjusted to goods stored in a refrigerating tank, in...
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4750338 |
Device for cooling a detector, particularly in an optical seeker
A detector (24) in an optical seeker is cooled by means of the Joule-Thomson effect by expansion of pressurized gas. The pressurized gas is generated by a compressor (10) and is guided through a...
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4739622 |
Apparatus and method for the deep cryogenic treatment of materials
Apparatus and methodology for the ultralow temperature processing of metallic, carbide, ceramic and plastic parts and items to materially increase their wear, abrasion, erosion and corrosion...
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4627244 |
Cryogenic cooling
A process is provided for carrying out the cryogenic cooling of a material which comprises introducing material to be cooled into an elongated cryogenic tunnel housing on means for conveying said...
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4622829 |
Refrigerating cycle
A refrigerating cycle composed of a compressor, a condenser, a pressure differential valve, a throttle, an evaporator and a check valve. The check valve is connected back to the compressor. The...
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4545215 |
Refrigeration apparatus
A refrigeration apparatus comprising a compressor, a condenser, a pressure-reducing device and an evaporator connected sequentially in a loop. The loop includes a check valve placed between the...
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4487025 |
Passive booster for pumping liquified gases
The present invention comprises a method and apparatus for maintaining a liquified gas such as CO 2 or N 2 in a liquid state prior to its introduction into the suction of a positive displacement...
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4475351 |
Dual-flow cryogenic freezer
Products to be frozen are conveyed through an insulated horizontal tunnel having a plurality of individual cooling zones, each equipped with a radial fan rotating in a horizontal plane. Cryogenic...
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4422303 |
Process for cooling a continuously moving material to a predetermined temperature
A continuously controlled process for cooling a material to within a desired temperature range as the material moves along a path, especially suitable for situations in which the amount of material...
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4344290 |
Process and apparatus for in-line slush making for concrete cooling
An improvement is provided in a process and apparatus for in-line slush making, for use in, for example, concrete cooling. The improvement comprises connecting the inlet used to convey liquid such...
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4295339 |
Cryostat system utilizing a liquefied gas
A cryostatic system utilizing a liquefied gas in which an object or substance to be cooled in a thermostatic chamber without a stirrer and electric heater therein is cooled initially by a liquid...
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4286438 |
Condition responsive liquid line valve for refrigeration appliance
An energy efficient refrigeration system having a valve in series with a fixed flow restrictor between the condenser and evaporator of the system. The valve is controlled to permit fluid flow...
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4267702 |
Refrigeration system with refrigerant flow controlling valve
A refrigeration system is disclosed having a compressor, a condenser, an evaporator, a refrigerant expansion device, a control for cycling the compressor on and off according to a sensed condition,...
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4228662 |
Cryogenic apparatus
A cryogenic apparatus cools an object to, and maintains it at, very low terature and is of the kind in which a refrigerating medium comprising superfluid helium II is evaporated from a supply...
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4171625 |
Cryogenic freezing tunnel
A cryogenic food product freezing tunnel comprising a stationary structure including an entrance end housing section, a tunnel housing cover, and an exit end housing section, a conveyor to...
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4110821 |
Semiconductor device having a semiconductor accommodated in a sealed vessel
A semiconductor device includes a sealed vessel accommodating a semiconductor body and a heating element. When the semiconductor body is not energized, the heating unit is heated.
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4081971 |
Air cooled centrifugal refrigeration machine with provision to prevent evaporator freezing
An air cooled centrifugal refrigeration machine is shown having an automatic shut-off valve in the liquid line to prevent natural circulation of refrigerant at low outdoor ambient temperatures that...
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3952533 |
Multiple valve refrigeration system
An energy saving refrigeration system as for refrigerated display cases in stores, free of the usual winter head pressure controls on the condenser equipment, capable of functioning satisfactorily...
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RE28712 |
Parallel flow cryogenic freezer
A cryogenic freezer for freezing products comprising an elongated horizontal tunnel, a conveyor extending therethrough, a liquid cryogenic spray at the outlet end of the conveyor, a plurality of...
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3910064 |
Method and apparatus for producing variable temperature with the aid of a cryoliquid
A method of producing variable temperatures with the aid of a cryoliquid, erein the cryoliquid is throttled in a heat-insulated section at a point having poor heat conductivity, and at a distance...
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3898863 |
Cryogenic refrigeration apparatus with automatic temperature control and automatic gas balance control
Apparatus and method for refrigerating articles comprising a heat insulated tunnel, a conveyor therein for passing articles to be refrigerated through the tunnel, introducing means for a cryogen...
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3892104 |
Cryogenic freezer with variable speed gas control system
A cryogenic tunnel-type freezer is disclosed comprising a cryogenic liquid spray zone, a plurality of gaseous precooling zones having non-enclosed recirculation fans, and at least one enclosed,...
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3881323 |
Viscosity regulated cooling system
A viscosity regulated cooling system for cooling a load device comprises a closed coolant circulating system adapted to contain a coolant whose viscosity varies inversely with its temperature. the...
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3850006 |
PORTABLE COOLING UNIT FOR CONNECTION WITH AUTOMOBILE AIR CONDITIONER
A portable cooler having a built-in cooling unit and quick connector assemblies adapted to be connected into an automotive air conditioning system whereby the portable cooler may be conveniently...
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3850004 |
CRYOGENIC HELIUM REFRIGERATION SYSTEM
Liquid helium vaporized in cooling a refrigeration load is counterflowed through a heat exchanger to cool a high pressure flow of helium which is thereby cooled to below the inversion temperature....
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3791160 |
AIR CONDITIONING SYSTEM WITH TEMPERATURE RESPONSIVE CONTROLS
An air conditioning system comprising a compressor, condenser, and evaporator includes a refrigerant bypass line for passing a portion of the heat laden high-pressure refrigerant from the...
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3716096 |
TEMPERATURE CONTROL AND SUPERVISION SYSTEM FOR A BUILDING AIR CONDITIONING SYSTEM
A temperature control and supervision system for controlling and supervising the operation of a building air conditioning system having a central station and a plurality of remote stations...
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3710586 |
REFRIGERATION SYSTEM WITH FLUID TRANSFORMER FOR CONTROLLING REGRIGERANT FLOW
By connecting the primary and secondary flow circuits of a fluid transformer in different portions of a vapor compression refrigeration cycle, the refrigerant flowing in the primary may be used to...
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3667246 |
METHOD AND APPARATUS FOR PRECISE TEMPERATURE CONTROL
A temperature control system for maintaining a cryogenic load at a predetermined temperature by circulating a wet mixture of a coolant through tubing that is in heat-transfer relationship with the...
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