Vacuumized Chamber With Open Vapor Or Gas Outlet Patents (Class 62/268)
  • Patent number: 6684658
    Abstract: Novel vapor compression evaporative cooling systems which use water as a refrigerant are provided, as are methods for using same. Also provided are novel compressors, compressor components, and means for removing noncondensibles useful in such cooling systems.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: February 3, 2004
    Assignee: The Texas A&M University System
    Inventors: Mark T. Holtzapple, Richard Davison, G. Andrew Rabroker
  • Publication number: 20030150233
    Abstract: In cooling plants which work with water as both primary and secondary coolant, it is customary for use to be made of both an evaporator and a condenser which must be supplied wi5th water in the form of e.g. a spray for achieving an effective heat exchange, and out of regard for the effectiveness it is necessary for a continuous deaeration of the water to be carried out, which is effected by the sucking of air direct from the condenser, possibly supplemented with an external NCG condenser or by leading the supply water through a pre-deaerator under vacuum. With the invention it has been found possible to configure both the evaporator and the condenser with associated deaeration/pre-deaeration units in a fully integrated manner, namely by mounting a pair of sieve plates in a vacuum container for the dividing of the container into an upper supply- and distribution chamber, a centremost pre-deaeration chamber (one or more), and a bottom chamber in the form of an evaporator- and a condenser chamber respectively.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 14, 2003
    Inventors: Christian Svarregaard Jensen, Lars Hattmann
  • Patent number: 6508065
    Abstract: The invention is a system and process for supplying fluid in hermetic circuits. The type of hermetic circuit is identified, and based upon this identification, vacuum and fluid supply conditions that are predetermined for the type of circuit are applied. Using the system and process, multiple types of hermetic circuits with varying operating conditions may be continually processed on a production line.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: January 21, 2003
    Assignee: Multibras S.A. Eletrodomesticos
    Inventors: Estevao Marino De Espindola, Vadis Bellini, Marcio Moacir Pereira, Eriberto Nelson De Souza, Paulo Geraldo Scheibe
  • Publication number: 20020170300
    Abstract: The present invention relates to an air circulation system of a refrigerator in a side-by-side refrigerator. The air circulation system ejects a cold air into a refrigerator compartment asymmetrically from right and left side walls to form a vortex thereby enhancing the ability of uniform cooling.
    Type: Application
    Filed: December 20, 2001
    Publication date: November 21, 2002
    Inventors: Seong Ho Cho, In Seop Lee
  • Publication number: 20020088243
    Abstract: Novel vapor compression evaporative cooling systems which use water as a refrigerant are provided, as are methods for using same. Also provided are novel compressors, compressor components, and means for removing noncondensibles useful in such cooling systems.
    Type: Application
    Filed: September 28, 2001
    Publication date: July 11, 2002
    Inventors: Mark T. Holtzapple, Richard Davison, G. Andrew Rabroker
  • Publication number: 20020083724
    Abstract: Food Storage and Preservation System with a plurality of food storage containers each with a gasketed door, each the food storage container having an air inlet port and an air outlet port, the air outlet port terminating in a solenoid valve and a vacuum limit switch, a central air treatment module in a housing, the air treatment module consisting of a vacuum pump, an ozone generator, a microprocessor and a power supply, a wire and hose harness set, said wire and harness set capable of connecting said food storage container to said air treatment module, a switch sensor that activates when said container door opens or closes, a sliding food holding tray that resides inside said food storage container, a food storage and preservation system that, when the user closes said door, first ozonates the interior of said container and then evacuates the air from said container as controlled by said microprocessor, said evacuation automatically maintained by the monitoring of said vacuum limit switch, said air treatment
    Type: Application
    Filed: December 28, 2001
    Publication date: July 4, 2002
    Inventors: Kenneth A. Tarlow, Samuel S. Kim
  • Patent number: 6329005
    Abstract: Rapid cooling apparatus including a vacuum chamber, a vacuum pump in fluid communication with the vacuum chamber for decreasing pressure in the vacuum chamber, a heat-transfer fluid disposed inside the vacuum chamber, and a substance generally sealed in a package in heat-transfer contact with the heat-transfer fluid inside the vacuum chamber. Preferably the package is constructed of an expandable material.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: December 11, 2001
    Inventor: David Reznik
  • Patent number: 6311510
    Abstract: Refrigerant cooling coils inserted within a passage of brine in a heat exchanger are so deformed into a shape of flat elliptical cylinder that long axis of ellipse is parallel to a condensing surface, and a side or two sides of a pair of flat faces formed by deformation machining are fitted within the passage, closely contacted with an inner wall of the passage of the brine, in order to increase the contact surface between the refrigerant cooling ellipse coils and the inner wall of the passage of brine in the vapor trap plate and in order to enhance boundary film convection heat transfer coefficient of the brine circulated in the passage of said heat exchanger so as to provide excellent heat transfer property and great vapor condensing capability.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: November 6, 2001
    Assignee: Kyowa Vacuum Engineering, Ltd.
    Inventors: Ryouji Sunama, Airu Yao
  • Patent number: 6158233
    Abstract: The walls of a refrigerator or freezer cabinet comprise an inner shell (20) of plastic, an outer shell (22) of plastic and an evacuated heat insulation (28) between the shells. The cabinet is permanently provided with a vacuum pump (30), which keeps the insulation evacuated. Each one of the inner shell (20) and the outer shell (22) has at an access opening (16) of the cabinet an end part (24 and 26, respectively), both of which being directed out from the opening (16) and joined together along a surface (21), which like a band extends around the opening in parallel with its plane (16).
    Type: Grant
    Filed: February 10, 1999
    Date of Patent: December 12, 2000
    Assignee: Aktiebolaget Electrolux
    Inventors: Ilan Cohen, Anders Haegermarck
  • Patent number: 6145321
    Abstract: A method of cooling an aqueous liquid, which method comprises the steps of:a) placing said aqueous liquid in a vessel;b) reducing the pressure in said vessel to cause said aqueous liquid to boil;c) condensing at least some of the liquid in the vapour created as said aqueous liquid boils by heat exchange with a liquid cryogen; andd) using vapour from said liquid cryogen to at least assist in step (b).
    Type: Grant
    Filed: July 7, 1999
    Date of Patent: November 14, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Jeremy Paul Miller, Mark Sherman Williams
  • Patent number: 6116030
    Abstract: A vacuum pump of the steam-ejector type uses steam generated by the combustion of hydrogen and oxygen. The mass of ejected steam is increased, and the temperature of the ejected steam is reduced, by injection of water into the combustion product. Propellant densification is accomplished by using such a vacuum pump to reduce the vapor pressure of a cryogenic liquid, thereby reducing its temperature. The cryogenic liquid may be the propellant, or it may be a coolant medium thermally coupled to the propellant.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: September 12, 2000
    Assignee: Lockheed Martin Corporation
    Inventor: George Taylor Story
  • Patent number: 6090422
    Abstract: A refrigerator (10) includes a vacuum cabinet (20) which includes a vacuum compartment (42) and an open top drawer (34) in the vacuum compartment. When the refrigerator door is closed, a rotary spool (75) of the air control valve (70) is moved to a position to recirculate air from the vacuum compartment through the vacuum pump (65) back into the vacuum compartment so as to pre-chill the contents of the vacuum compartment. Later, while the refrigerator door is still closed, the air control valve is shifted so that the vacuum pump (65) draws air from the vacuum compartment until a predetermined low air pressure is detected in the vacuum compartment, whereupon the operation of the vacuum pump terminates. When the refrigerator door is opened, the valve spool (75) rotates to vent the vacuum compartment to the atmosphere, thereby equalizing the pressure within the vacuum compartment to atmospheric pressure and allowing the open top drawer of the vacuum compartment to be opened.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: July 18, 2000
    Inventors: Arie Taragan, Henry Chaim Oami
  • Patent number: 6054165
    Abstract: The invention relates to a process and an apparatus for cooling high-viscosity sauces containing ingredients in the form of solid pieces. To develop a virtually continues process while preserving the ingredients in piece form as much as possible, according to the invention the following process steps are proposed:a) the sauce prepared at a temperature of to C. is pumped via a cooling system and is thereby cooled to a temperature of about to C.;b) the sauce pre-cooled in this way is pumped into a cooling tank under vacuum, which it passes through under the force of gravity, partly via enforced diversions and partly in free fall, the sauce being cooled by water evaporation to a temperature of about C. to C.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: April 25, 2000
    Assignee: A. Stephan U. Soehne GmbH & Co.
    Inventor: Friedrich Koellner
  • Patent number: 6038869
    Abstract: A method and apparatus for generating uniformly sized spherical ice particles. The apparatus comprises a water feed pump, a vacuum chamber connected to the water feed pump and having a water spray nozzle, boosters discharging the vapor from the vacuum chamber to maintain the inside of the vacuum chamber below a desired pressure and compressing it, a condenser for condensing the vapor being compressed by the boosters, and a vacuum pump for removing noncondensable gases from the condenser.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: March 21, 2000
    Assignee: Korea Institute of Science and Technology
    Inventors: Yoon Pyo Lee, Chun Sik Lee, Kwang Ho Kim, Jong Soo Jurng, Young Il Kim, Hung Tae Shin, Hee Suk Han
  • Patent number: 5928699
    Abstract: Apparatus for rapid cooling of a liquid to be cooled including a heat exchanger including a housing for containing a cooling liquid, a plurality of cooling conduits traversing the housing in thermal contact with the cooling liquid and defining a cooling conduit inlet and a cooling conduit outlet and a vacuum generator associated with the interior of the housing for reducing the pressure in the housing until the cooling liquid boils whereby a heat transfer coefficient of the cooling liquid is generally maximized.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: July 27, 1999
    Inventor: David Reznik
  • Patent number: 5906102
    Abstract: A cryopump having a cryopump chamber includes a purge gas valve coupled to the cryopump chamber for supplying a first quantity of warm gas to the cryopump chamber in order to purge the cryopump chamber during regeneration. A roughing valve couples the cryopump chamber to a roughing pump enabling the cryopump chamber to be roughed. An exhaust valve is coupled to the cryopump chamber for exhausting gases from the cryopump chamber during purge. A delivery valve is coupled to the exhaust valve for delivering a second quantity of warm gas directly onto surfaces of the exhaust valve for warming the surfaces of the exhaust valve.
    Type: Grant
    Filed: April 12, 1996
    Date of Patent: May 25, 1999
    Assignee: Helix Technology Corporation
    Inventors: Allen J. Bartlett, Michael J. Eacobacci, Jr., Joseph P. Johnson
  • Patent number: 5839289
    Abstract: The air pressure within a part of an appliance (e.g., a refrigeration pipe of an air conditioner unit) is reduced as the part is conveyed on a conveyor. This pressure reduction is accomplished by connecting a first end of a vacuum hose to the part, and then rotating a rotatable member to which the second end is connected. That causes the second end to be alternately brought into and out of communication with a vacuum source, whereby a vacuum is intermittently induced in the part. During periods when the second end of the vacuum hose is out of communication with the vacuum source, that second hose end is placed in communication with a pressure at least at atmospheric, to temporarily increase the pressure in the part.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: November 24, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Nam-sik Cho
  • Patent number: 5829258
    Abstract: The air pressure in a part of an appliance (e.g., a refrigeration pipe of an air conditioner unit) is reduced as the part is conveyed on a conveyor. This is accomplished by means of a vacuum pump which is connected to the part by a hose. The pressure reduction is achieved in a step-by-step fashion by either (a) alternately starting and stopping the pump while the hose remains connected to the part, or (b) alternately connecting and disconnecting the hose to and from the part.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: November 3, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Nam-sik Cho
  • Patent number: 5744696
    Abstract: Sample analysis in a portable analytical instrument, preferably in the form of a gas chromatograph, benefits from temperature control of one or more thermal zones in the instrument by way of a thermal isolation system that includes a novel pumping assembly to effect a selective amount of thermal isolation of the thermal zone. The pumping assembly includes a pumping element in the form of a tubular or planar palladium structure. The pumping assembly makes use of the unique properties of palladium to allow selective control of a nominal gas pressure within a vacuum cavity. A component system, which may include a separation column and a thermal device for heating and/or cooling the component system, may be provided within the vacuum cavity. The thermal device and the pumping assembly are individually controlled by a control system.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: April 28, 1998
    Assignee: Hewlett-Packard Company
    Inventors: Tak Kui Wang, James Ward Baker, Terry A. Berger
  • Patent number: 5740680
    Abstract: A deodorizing reinforced container includes: a housing having an outer shell lined with thermally insulative lining on an inside surface of the outer shell, and an inner shell defining a storing chamber within the inner shell; a plurality of reinforcing ribs longitudinally and latitudinally retained between the inner shell and the outer shell of the housing for reinforcing the strength of the housing for sustaining a hypobaric pressure; a cooling hypobaric device and a humidifier provided in the storing chamber for producing low pressure, low temperature and increasing humidity in the storing chamber for well preservation of foods, fruits or other storing materials within the housing; and a deodorizing device provided in a sandwiched space between the inner and outer shells for absorbing unpleasant odors and absorbing ethylene or other excess unexpected gases which may cause aging of the fruits or vegetables as stored in the housing for freshening the stored matters in the housing.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: April 21, 1998
    Inventor: Fong-Chuan Lee
  • Patent number: 5551246
    Abstract: A centrifugal liquid separator and defoamer for use in a vacuum cooling system including a cooling vessel having a vessel interior for containing a liquid to be cooled, and a vacuum system for applying a vacuum to an interior of the vessel, through a vessel vapor outlet nozzle. This separator and defoamer includes at least one impeller blade positioned in the vicinity of a juncture of the vessel interior and vessel vapor outlet nozzle, this impeller blade being rotated at a speed at which any liquid contacting the rotating impeller blade will be thrown off the blade, and any foam contacting the impeller blade will be converted to liquid and thrown off the blade, in the direction of the vessel interior, by centrifugal action.
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: September 3, 1996
    Assignee: Croll-Reynolds Company, Inc.
    Inventor: Russell Ojala
  • Patent number: 5537833
    Abstract: A cryogenic trap is shielded by a floating baffle array which is insulated from ambient temperature. The cryogenic trap includes a baffle array which is suspended by conductive braid from split cylinders. The split cylinders are cooled by respective closed cycle refrigerators.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: July 23, 1996
    Assignee: Helix Technology Corporation
    Inventors: Stephen R. Matte, Bruce R. Andeen
  • Patent number: 5520004
    Abstract: The invention includes a tunnel-conveyor section designed to process large-scale quantities of such materials as automobile tires for frangiation and embrittlement to low- or cryogenic-temperature levels for separation of fibrous and metal portions and subsequent granulation into fine-mesh particles. The system is also designed to subject food products to low- or cryogenic-temperature levels prior to for long-term storage and shipping as well. The system can also be used for freeze drying at very low temperatures ( F. and lower) when nonconveyor procedures are used. The unit can be adapted as a horizontal-cylinder as well as a spiral or circular system for large-scale conveyor operations. Smaller systems can also be fabricated for laboratory or smaller-scale procedures.
    Type: Grant
    Filed: June 28, 1994
    Date of Patent: May 28, 1996
    Inventor: Robert H. Jones, III
  • Patent number: 5520008
    Abstract: A lightweight, heavy duty, large volume centrifugal compressor for use in mechanical vapor compression systems, especially water vapor compression systems in heat pump installations, said compressor comprising a shaft driven propeller-like rotary member consisting of a frusto-conical hub and a plurality of curved blades made of a lightweight material, each being secured to said hub along a longitudinal curved line and radially extending therefrom; each pair of adjacent blades being interconnected by a bridging membrane member of a lightweight material curvingly extending from the roots of the leading edges of said adjacent blades to the tips of the rear edges of the blades; said rotary member being encompassed within a closely fitting shroud, so that curved vapor flow channels are defined between each said pair of blades, their associated membrane member, and the shroud.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: May 28, 1996
    Assignee: I.D.E. Technologies Ltd.
    Inventors: Avraham Ophir, David Olomutzki, Abraham Koren, Arie Kanevski
  • Patent number: 5473901
    Abstract: Heat insulation is provided for a refrigerator or freezer. The insulation includes a closed cell material, which is placed in a hermetically closed space (13) surrounded by a diffusion-tight shell. The space communicates with a vacuum source, and a gas diffuses through the cells five times faster than air gasses. The material does not achieve its full insulating properties until the refrigerator has been used.
    Type: Grant
    Filed: August 31, 1993
    Date of Patent: December 12, 1995
    Assignee: Electrolux Research & Innovation Aktiebolag
    Inventor: Rutger A. Roseen
  • Patent number: 5386872
    Abstract: A refinery petroleum gas recovery apparatus driven by normally wasted heat, comprising primarily the cooling system, the heat exchanging petroleum gas recovery system, and the appropriate peripheral equipment, wherein the wasted heat from the refining process is used as a power source for creating a vacuum cooling function to cool the water being heat exchanged with the petroleum gas down to the temperature of C. The heat in the gas is removed and the gas is condensed into liquid for reuse. The petroleum gases ethane, propane etc. which are ordinarily burned in the torch tower can now be recovered for reuse. The air pollution created from the burning of the gases in the torch tower is eliminated. Thus the apparatus has a high industrial value.
    Type: Grant
    Filed: February 4, 1993
    Date of Patent: February 7, 1995
    Inventor: Wei-Min Chang
  • Patent number: 5386703
    Abstract: A vacuum cooler for produce and the like includes a vacuum tube forming a vacuum chamber into which produce is placed. A vacuum pump lowers the atmospheric pressure while cold water is gently sprayed onto the produce. Water vapor from the produce is condensed, directed to a sump in the chamber without permitting such condensed water to impinge on the produce, and then directed through a water disinfecting chamber for reuse. The cooler includes a venting system that admits outside air into the vacuum chamber, gradually returning the chamber to atmospheric pressure, and permitting removal of produce from the chamber.
    Type: Grant
    Filed: April 14, 1993
    Date of Patent: February 7, 1995
    Assignee: Roger Carson Later
    Inventor: Roger C. Later
  • Patent number: 5381675
    Abstract: The force sparing temperature changer operates through at least two air evacuated bellows. The relative positions of the chambers are such that the moving walls of the chambers face each other and transmit opposing vector forces to each other. This causes the movable walls of the bellows to settle in positions which are the result of the balance of opposing forces upon the walls. An outside reciprocal vector force upon the movable walls tips the balance of the opposing forces upon the movable walls and causes a reciprocal expansion and compression of each chamber. The bellows chambers contain a low boiling point liquid, such as water under a vacuum, which responds to the the expansion and compression of the chambers. The cooling effects of the expansion of the chambers upon the low boiling point liquid are separated from the heating effects of the compression of the chambers, by separate tubings and one way valves.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: January 17, 1995
    Inventor: Israel Siegel
  • Patent number: 5375431
    Abstract: A vacuum cooler for produce and the like comprising a vacuum tube forming a vacuum chamber into which produce is placed. A vacuum pump lowers the atmospheric pressure while cold water is gently sprayed onto the produce. Water vapor from the produce is condensed, and directed to a sump in the chamber without permitting such condensed water to impinge on the produce. The cooler includes a venting system that admits outside air into the vacuum chamber, gradually returning the chamber to atmospheric pressure, and permitting removal of produce from the chamber.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: December 27, 1994
    Inventors: Roger C. Later, Roger D. Later
  • Patent number: 5351501
    Abstract: A method is presented for the transfer of heat from a low to a higher temperature, in that the main medium in gas form is heated and compressed, after which this main medium is conducted to a first heating chamber (1) where heat at low temperature is added to the main medium, whereafter the gas is conducted to a compressor (8) and compressed, in that before being conducted to the first heating chamber (1), the main medium can undergo a pressure drop and a possible heat absorption in a heat exchanger. In the first heating chamber (1), there is added an auxiliary medium in liquid form which evaporates together with the heating of the main medium, so that after the heating the main medium is more or less saturated with the auxiliary medium in vapor form, in that the heat is added from a second heating chamber (2) in which a gaseous medium containing evaporated auxiliary medium is cooled for the condensation of the auxiliary medium.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: October 4, 1994
    Inventor: Benny Petersen
  • Patent number: 5339645
    Abstract: The invention consists of a cooling system which can be powered by solar energy, utilizing solar flat plate collectors. Water, the boiling point of which has been lowered by an air vacuum, is used as a refrigerant instead of freon. The water boils at low temperature in sealed air evacuated heat exchange coils and removes heat from the environment. A solar differential temperature engine is modified to include a pump mechanism. The pump is used to transfer the vapor, generated by the boiling of the low boiling point water in the heat exchange coils, from the coils to the chambers of the differential temperature engine. The vapor then re-condenses into a liquid, without a compressor, through the differential temperature between the chambers of the engine. The re-condensed liquid then returns spontaneously to the heat exchange coils by force of gravity. The cooling system may likewise operate through house hold electic power on a standby or permenant basis.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: August 23, 1994
    Inventor: Israel Siegel
  • Patent number: 5320161
    Abstract: Formaldehyde and similar biocides are transported in a gelled, semi-solid or solid state by providing formaldehyde in a concentration in methanol of about fifty-five percent (55%) to eighty-five percent (85%) by weight, loading the solution in rail cars or truck transport tanks in a liquid state and cooling the solution to a gelled, semi-solid or solid state for transport to a destination followed by reheating the solution and/or mixing with a solvent for discharge to an application such as the produced water flowstreams from Alaskan North Slope oil fields, for example.
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: June 14, 1994
    Assignee: Atlantic Richfield Company
    Inventor: Bruce A. Iiams
  • Patent number: 5317882
    Abstract: A water vapor vacuum refrigeration chilled water system with a compressor that allows flash cooling refrigeration system to be practical size and weight. The system utilizes only water vapor. Innovative features include a unique plenum condenser system which allows the refrigeration system to be totally enclosed with little or no effect of ambient temperatures on system performances. The plenum type spray condenser does not need fins or tubes as common refrigeration condensers. The compressor allows the large volume of water vapor to be compressed at high pressure ratios. The compressor is much smaller and lighter than state of the art positive or centrifugal type compressor for the required compression requirements. The compressor sections are made with two dissimilar type compressor rotating sections to obtain the required pressure ratios and flows.
    Type: Grant
    Filed: April 27, 1993
    Date of Patent: June 7, 1994
    Inventor: Paul E. Ritenour
  • Patent number: 5271454
    Abstract: Heat is removed from a spacecraft under zero gravity and under various accelerations, by a heat exchange contact between a cooling liquid or coolant and an evaporant or medium to be evaporated. The coolant flowing in at least one liquid cooling circulation circuit and the evaporant which is discharged in its vapor phase, are brought into heat exchange contact with each other in processing chambers forming at least two separate heat exchange stages, wherein different pressure and temperature conditions are set. The cooling liquid or coolant and the medium to be evaporated evaporant flow through these stages in sequence and in such a way that the coolant first flows through the stage with the highest pressure and the highest temperature, and then flows through the stages with successively lower pressure and/or temperature.
    Type: Grant
    Filed: September 4, 1992
    Date of Patent: December 21, 1993
    Assignee: Erno Raumfahrttechnik GmbH
    Inventor: Bernhard Leidinger
  • Patent number: 5271240
    Abstract: An inner cooled compartment for receiving articles to be preserved has a vacuum environment in it for the prolonged preservation of articles. Door closures for the compartment is associated with vacuum release valves to allow the closures to open. The inner compartment to be subject to vacuum may comprise a refrigerator area of a conventional household refrigerator or the freezer compartment thereof, or both. The vacuum storage hereof also has particular application to the vegetable tray compartment of a refrigerator and may contain a self-contained vacuum producing flexible container. The vacuum pump may be combined with the refrigerator operating structure or may be a separate outside mounted unit connected by a conduit into the compartments.
    Type: Grant
    Filed: July 6, 1992
    Date of Patent: December 21, 1993
    Assignee: Arex, Inc.
    Inventors: Robert P. Detrick, Ricky G. Ledbetter
  • Patent number: 5261244
    Abstract: A cold trap includes a set of baffles cooled by the cold finger of a closed cycle refrigerator. The baffles are vertically disposed in a vertical fluid conduit with frustoconical and conical surfaces for directing liquid to a circular trough during regeneration. After the liquid is collected, it is blown from the trough through a pressure relief valve by a nitrogen purge. The trough is formed in the upper surface of a connecting flange at the lower end of the fluid conduit.
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: November 16, 1993
    Assignee: Helix Technology Corporation
    Inventors: Philip A. Lessard, Douglas F. Aitken, Robert D. Bradford, Roland P. Graham, Steven A. Michaud, Karen J. Manning
  • Patent number: 5236041
    Abstract: A condenser for removing vapor from freeze dryers and other vessels includes a three-stage cyclonic or turbine-like vapor distributor mounted for rotation about the axis of an elongated horizontal delivery tube extending through the axial center of the condenser chamber. The delivery tube mounts end and radial spray nozzles for selectively spraying cleansing fluid and sterilizing steam onto the interior surfaces of all components within the condenser chamber, including a plurality of condenser members arranged in radially offset configuration about the delivery tube in an optically dense configuration which requires vapors to impact the cold surfaces of the condenser members before contacting the inner surface of the enclosing condenser chamber. Optical density is achieved by providing the condenser member as sheets of metal formed with a serpentine passageway between them for the circulation of a coolant.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: August 17, 1993
    Assignee: Hull Corporation
    Inventor: John M. Fay
  • Patent number: 5230221
    Abstract: Disclosed is an apparatus and method for cooling a product in a vacuum chamber which utilizes a door mounted in an opening portion of a vacuum tumbler chamber, a mechanism mounted on the door for injecting a coolant fluid into the tumbler chamber, a mechanism for rotating the tumbler chamber relative to the door and a vacuum mechanism for exhausting the coolant fluid from the tumbler chamber. The process includes the method of cooling a product in a vacuum chamber and which includes the steps of depositing the products in the vacuum chamber, subjecting the chamber to a vacuum, rotating the chamber, applying a coolant fluid to the products in the chamber; and exhausting the coolant fluid from the chamber by vacuum.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: July 27, 1993
    Inventor: David Delich
  • Patent number: 5209078
    Abstract: An air cooler system for use in association with an air circulation system and having a process air heat exchanger for recovering heat from the process air in the system, a vacuum chamber with a vacuum chamber heat exchanger in communication with the process air heat exchanger so as to transfer heat from process air heat exchanger to the vacuum chamber heat exchanger, a water supply for supplying water to the vacuum chamber and, vacuum source to draw a predetermined degree of vacuum in the vacuum chamber so as to reduce the boiling point of water therein.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: May 11, 1993
    Inventors: Wayne E. Conrad, Richard S. Phillips, Andrew R. Phillips
  • Patent number: 5199187
    Abstract: The subject invention provides a freeze dryer apparatus having an interim condensing system, preferably a refrigeratable condensing surface. The interim condensing system condenses vapors within the product chamber of the freeze dryer apparatus when the main condenser coil, which normally condenses vapors within the product chamber, needs to be defrosted. The refrigeratable condensing surface is preferably mounted inside the product chamber.
    Type: Grant
    Filed: July 31, 1991
    Date of Patent: April 6, 1993
    Assignee: SP Industries
    Inventor: David T. Sutherland
  • Patent number: 5186242
    Abstract: A condenser is disclosed which is provided with a forced cooling system adapted to effect forced cooling of a gaseous coolant in the condenser by exchange of heat with water. This forced cooling system comprises an evaporation chamber disposed in a coolant inlet side flow path of the condenser and provided therein with fins, a vacuum tank (or a water pump) for circulating water in a closed flow path passed through the evaporation chamber, an orifice for decompressing the water being introducing into the evaporation chamber, and a control device for effecting circulation of water only when necessity arises. The water is aspirated, when necessary, by negative pressure from a water storage tank, decompressed to a prescribed saturated pressure by the use of the orifice and consequently atomized and allowed to flow into the evaporation chamber, and allowed to deprive the gaseous coolant at high temperature of a large amount of the latent heat of vaporization and consequently cool the gaseous coolant.
    Type: Grant
    Filed: March 5, 1991
    Date of Patent: February 16, 1993
    Assignee: Calsonic Corporation
    Inventors: Tsunenari Adachi, Hitoshi Akasaka, Yutaka Moriyama
  • Patent number: 5169502
    Abstract: An installation for processing liquids having at least one vaporizer used for the process liquid, a condenser arranged downstream from this vaporizer, and a vacuum pump. Additionally, a gas-ring compressor, positioned in the exhaust pipe between the vaporizer and the condenser, presses the vapors from the process liquid through the condenser. The process liquid is vaporized in the vaporizer under a vacuum and the vapors are carried by an exhaust pipe that is connected to the vaporizer through the condenser to the vacuum pump. Also, the process liquid, which is used as the cooling liquid for the condenser, is heated in the condenser and then recycled to the vaporizer.
    Type: Grant
    Filed: November 28, 1990
    Date of Patent: December 8, 1992
    Assignee: Siemens Aktiengesellschaft
    Inventor: Kurt-Willy Mugele
  • Patent number: 5161610
    Abstract: An active cooling circuit through which cooling liquid circulates, is connected to an evaporation heat exchanger for cooling said cooling liquid when it has begun to warm. For this purpose, a housing encloses an evaporation chamber into which an evaporation fluid, such as water, is sprayed whereby the heat needed for the evaporation cools the cooling liquid passing through a gap between an inner and an outer wall forming said housing. The active cooling circuit passes through the gap in which eddy bodies are arranged in such positions relative to the normal flow direction of the cooling liquid through the gap to cause eddy currents in the cooling liquid flowing through the gap for an improved heat exchange. The discharge for the evaporated fluid is located at the same housing end where the spray nozzles for the injection of the evaporation fluid are located.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: November 10, 1992
    Assignee: ERNO Raumfahrttechnik GmbH
    Inventor: Bernhard Leidinger
  • Patent number: 5157940
    Abstract: A refrigerator, freezer or the like comprises a cabinet (1), a pump (6) for producing vacuum and, in a refrigeration compartment (10) thereof, a container (17) closable in a vacuum-tight manner and able to be moved within said compartment (10), said container (17) comprising a lid (19) guided to open and close during its movement by elements (40) associated with said lid (19), which moves in guide tracks (41) provided in opposing walls (16) of said compartment (10) or in elements (42) associated with said walls (16), there being provided on said lid (19) mobile members (48) associated with pins (46, 50) acting as hinges about which, during the movement of said lid (19), said members (48) rotate under the action of a thrust exerted by pusher means (51), said movement taking (48), during their rotation about said pins (46, 50), exceed an equilibrium position beyond which the pusher means (51) act to provide independent guided movement of said lid (19).
    Type: Grant
    Filed: January 29, 1991
    Date of Patent: October 27, 1992
    Assignee: Whirlpool International B.V.
    Inventors: Angelo Bertu, Giovanni Franzetti, Franco Germi
  • Patent number: 5154007
    Abstract: This invention relates to an apparatus and method for distillation drying of one or more biological samples. The drying apparatus includes a retaining assembly, a vacuum assembly, cooling means, monitoring means and control means for actively regulating the temperature and pressure conditions of biological tissue so that such tissue may be dried without substantial ultrastructural damage.
    Type: Grant
    Filed: March 13, 1990
    Date of Patent: October 13, 1992
    Assignee: Board of Regents University of Texas System
    Inventors: Carmen Piunno, Stephen Livesey, John G. Linner, Anthony A. del Campo, Mark J. Zaltzberg
  • Patent number: 5131168
    Abstract: The product is frozen and freeze-dried in a freeze-drying apparatus (1) containing a freeze-drying chamber (2) with shelves (6) for performing the freeze-drying and a condenser (11), the cooling surfaces of which are formed by a coiled tube (14) in a number of tube coil turns (15), and where the low temperature created by the condenser (11) is used to freeze the product. To carry out the freezing quickly and simply the product is put into trays or dishes (21) and these trays or dishes are positioned on the tube turns (15) of the condenser (11) already in operation.
    Type: Grant
    Filed: January 8, 1991
    Date of Patent: July 21, 1992
    Assignee: Finn-Aqua Santasalo-Sohlberg GmbH
    Inventors: Rainer Rilke, Manfred Steiner
  • Patent number: 5111667
    Abstract: A two-stage cryopump having a refrigerator including a first stage and a second stage being colder than the first stage; a condensation member having a condensation surface; a first coupler for connecting the condensation member to the second stage in a thermally conducting manner; an adsorption member having an adsorption surface and being spaced from the condensation member; and a second coupler for connecting the adsorption member to the second stage in a heat conducting manner. There is further provided a heater for heating the adsorption member during time periods for regenerating the adsorption member. The second coupler is so designed that it thermally sufficiently insulates the adsorption member from the second stage and from the condensation member at least during heating periods of the adsorption member, for preventing heating the condensation member by the heater.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: May 12, 1992
    Assignee: Leybold AG
    Inventors: Hans-Ulrich Hafner, Hans-Hermann Klein, Uwe Timm
  • Patent number: 5109761
    Abstract: A bread cooling machine comprising at least one carousel mounted for rotation about a central axis and having a number of stations about the periphery of the carousel. The stations are each arranged to support one or more loaves and cooling operations are carried out on the loaves during rotation of the carousel. The means for carrying out these cooling operations comprises hollow needles arranged to penetrate the interior of the loaves and to supply air under pressure thereto to cause a flow of cooling air from the interior of the loaves to the ambient atmospheric pressure exterior. There are conveyor means for delivering loaves to be cooled from an oven for example to the carousel stations and for receiving loaves after the cooling operations from the carousel for further processing stages such as slicing and wrapping of the loaves.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: May 5, 1992
    Inventor: John B. Gray
  • Patent number: 5095717
    Abstract: A refrigerating apparatus is provided which comprises a cabinet (1) with a refrigeration compartment (10) closable by a door (12), which compartment is connected to an evacuating system comprising a vacuum pump (6) arranged in the cabinet and an evacuation pipe (8) between the vacuum pump and said compartment. The apparatus comprises a container (17) closable in a vacuum-tight manner and movable within said compartment (10), and means for detachably connecting the inner space of the container (17) with the pipe (8) of the evacuating system. The means comprise a container pipe (23) provided in a wall (24) of the container (17) through which the inner space of the container can be evacuated, and a hollow elastic element (25) connected to one of the ends of the pipes (8,23) facing each other to form a detachable seal against the other end.
    Type: Grant
    Filed: June 26, 1990
    Date of Patent: March 17, 1992
    Assignee: Whirlpool International B.V.
    Inventor: Franco Germi
  • Patent number: 5088293
    Abstract: In a vacuum cooling apparatus, a hollow receptacle is provided, for containing a plurality of containers for containing materials to be cooled, the containers being slidably fitted in the receptacle one after another. The receptacle has through-holes formed therein at intervals corresponding to the dimension of the container which is measured in the axial direction of the receptacle in such a manner that the receptacle through-holes are arranged in the axial direction of the receptacle. Each of the containers has a container through-hole formed therein so that the container through-hole is allowed to communicate with the receptacle through-holes. Seal members also are provided, allowing the inside of each container to communicate with the outside only through the receptacle through-hole and container through hole.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: February 18, 1992
    Assignee: The Japan Steel Works, Ltd.
    Inventor: Shunji Itou