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Gas or vapor pressure is subatmospheric

Subclass of:

034 - Drying and gas or vapor contact with solids

034282000 - PROCESS

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Class / Patent application numberDescriptionNumber of patent applications / Date published
034406000 Gas or vapor pressure is subatmospheric 37
20090090022Desiccation Chamber and Methods for Drying Biological Materials - Methods and devices of drying biological materials are described, including a desiccation chamber that may be used to dry biological materials while substantially preserving functional integrity of those materials. The desiccation devices and methods provide optimal conditions and ease of use for drying biological materials. The devices and methods provided here may be used to prepare biological materials for use in one or more of diagnostic, therapeutic, industrial, and research applications.04-09-2009
20100024242MOBILE SURFACE DRYING APPARATUS - A mobile surface drying apparatus includes a vacuum and blower assembly. The vacuum and blower assembly includes a vacuum head and a blower head. The vacuum head suctions moisture through an inlet of the vacuum and blower assembly, and the blower head communicates airflow through an outlet of the vacuum and blower assembly.02-04-2010
20100192400MOISTURE REMOVAL SYSTEM - The invention provides an improved method of drying wet or water damaged surfaces using a vacuum source, a manifold, and a plastic sheet covered grid having a lattice formation with spaces to permit the passing of moisture and air from and beneath the surface to the vacuum source.08-05-2010
20110146100VACUUM KILN APPARATUS AND METHOD OF USING SAME - A vacuum kiln apparatus and method of using same are disclosed for use in drying corn, other grains, seeds and legumes. The vacuum kiln apparatus can include a support base, a wall, a vacuum pump system, a pressure valve, a top hatch, a machinery access hatch, an anti-overload baffle, a conveyor system, a motor, a chamber vent valve, an air outlet manifold and an air compressor. The wall defines an internal chamber for receiving the grain. The vacuum pump system is used to draw down the pressure within the internal chamber which drives moisture out of the corn while maintaining the integrity of the corn, i.e., drying the corn with little or no cracking. The air outlet manifold along with the air compressor are used to flush high pressure air through the piles of corn to strips off any residual water that may be clinging onto the exterior of the corn grains.06-23-2011
20120131814LIQUID COALESCENCE AND VACUUM DRYER SYSTEM AND METHOD - A coalescing dryer passes air downwardly through items to be dried in a container. The air can be diverted to change direction following passage of the air through the items to be dried. The moving air causes liquid on the surface of items to be dried to coalesce and travel downwardly and from the items being dried. A vacuum dryer applies a vacuum to the container of items to be dried when placed in a vacuum chamber after pre-drying by the coalescing dryer so as to evaporate liquid in the items to be dried that has not been removed by the coalescing dryer.05-31-2012
20120285036ELECTRODE DRYER AND METHOD FOR DRYING ELECTRODE - An electrode dryer includes a drying furnace; and 11-15-2012
20120324754MOBILE SURFACE DRYING APPARATUS - A mobile surface drying apparatus includes a vacuum fan, a blower fan, a vacuum and blower assembly and tubing. The vacuum and blower assembly includes a vacuum head powered by the vacuum fan and a blower head positioned next to the vacuum head and powered by the blower fan. The tubing connects the vacuum head to the vacuum fan and the blower head to the blower fan. The vacuum head includes an inlet that suctions moisture from a surface and the blower head includes an outlet that communicates airflow onto the surface to direct moisture toward the vacuum head to enable the vacuum head to extract the moisture from the surface.12-27-2012
20130074360Optimization Of Vacuum Systems And Methods For Drying Drill Cuttings - Systems and methods for separating fluids from drill cuttings. Specifically, the invention relates to shakers that incorporate a vacuum system and methods of operating such systems to effect a high degree of fluid separation. The system and methods are effective across a variety of screen sizes, vacuum flows and vacuum designs.03-28-2013
20130180125VACUUM HEAT PUMP CLOTHES DRYING METHOD AND DRYER - A dryer includes a sealed drum, a heat pump system, a vacuum device and a steam generating device. The steam generating device connects with the interior of the drum to introduce hot steam into the interior of the drum. The vacuum device connects with the interior of the drum. The heat pump system is arranged external to the drum. Heat generated by the heat pump device is exchanged with the outer surface of the drum through a liquid medium so as to heat the wet clothes in the drum. Simultaneously, damp-hot air mixed with the water vapor in pumped from heating clothes in the drum by the vacuum device and the hot steam pumped into the drum and contacted with clothes are cooled and condensed into water. The water produced by damp-hot air is connected with water provided by the steam generating device.07-18-2013
20140202026BEAD COLLECTION DEVICE AND METHOD - A device is provided for separating beads from a carrier fluid, the device comprising: a bead-receiving means for receiving beads dispersed in a carrier fluid, a fluid removal means operable to remove fluid from the bead-receiving means in a first fluid removal zone by the application of reduced pressure, and a bead collection means operable to remove beads from the bead-receiving means in a bead collection zone by the application of reduced pressure, the bead-receiving means being movable so that beads are movable from the first fluid removal zone to the bead collection zone.07-24-2014
20140215846SKATE DRYER AND METHOD FOR USING - A skate dryer assembly. The assembly has a skate, a dryer module, and a device for blowing or sucking air through or from the module. The skate includes a boot and a blade. The dryer module defines a slot therein adapted to receiving and retaining the blade therein.08-07-2014
20150089831APPARATUS AND METHOD FOR DRYING - A drying apparatus that dries a porous membrane that is carryable along a predetermined direction and a drying method, the drying apparatus including a housing; a plurality of air suppliers arranged in the housing along the predetermined direction so as to inject air toward the porous membrane; and a plurality of air exhausters arranged in the housing along the predetermined direction so as to exhaust air that has been injected from the air suppliers to an exterior of the housing, wherein the plurality of air suppliers are symmetrically arranged with one another at opposite sides of the porous membrane to face each other with the porous membrane disposable therebetween.04-02-2015
20160107135SYSTEM AND METHOD FOR CONDITIONING PARTICULATE MATTER - A method of conditioning particulate material and/or a gas is provided, comprising the steps of: feeding an amount of particulate material up to a filling level into in an inner volume of a silo having silo walls, a gas inlet and a gas outlet, and generating a gas flow of a gas from the gas inlet through the particulate material to the gas outlet which comprises applying suction to the inner volume of the silo through the gas outlet, wherein the gas outlet is located in a silo wall below the filling level and covered by the particulate material. A system is also provided.04-21-2016
20160114304METHOD AND APPARATUS FOR PREPARING AEROGEL BY DRYING UNDER REDUCED PRESSURE - A method and an apparatus for preparing aerogel by drying under reduced pressure. The gel to be dried is placed into a sealed drying apparatus which can be depressurized by air extraction or/and can be heated to raise the temperature. The methods of reducing pressure by air extraction or/and raising temperature are acted upon the water and solvents within the aerogel to be dried, and an outward force is thus generated for the water and solvents to be volatilized outwards. By controlling the rates of reducing pressure by air extraction or/and raising temperature, the outward force is allowed to be equal to or close to the inward capillary force, such that the pores of the gel may not be collapsed or cracked. At the same time, drying is carried out continuously, and finally the interior water and solvents are removed completely.04-28-2016
20160201986SUBSTRATE HOLDER ASSEMBLY, APPARATUS, AND METHODS07-14-2016
034407000 With condensation of vapor 3
20130205614Vacuum Drying Of Heat Exchanger Tubes - A method and an apparatus are disclosed for removing a solvent from a solvent wetted surface of a heat exchange tube. The method includes placing the heat exchange tube in a vacuum chamber, evacuating the vacuum chamber to a lower pressure at which the solvent boils to a vapor, and reclaiming the solvent vapor. The method may include heating the heat exchange tube within the vacuum chamber to a temperature of at least room temperature, but below the solvent's flash point temperature. The apparatus includes a vacuum chamber, a vacuum pump for evacuating the vacuum chamber and a solvent reclaimer for recovering solvent vapor. The apparatus may also include an infrared heater, a radiant heater or other non-flame heater. The method and apparatus may be used for removing solvent from a heat exchange tube having an inside surface wetted with a solvent carrying a dry lubricant.08-15-2013
20150352238STERILIZATION METHOD AND APPARATUS - A method for controlling condensation of hydrogen peroxide at a preselected temperature within a sealed sterilization chamber including an article to be sterilized includes the steps of applying to the sealed chamber a vacuum of a first pressure sufficient to evaporate, at the preselected temperature, an aqueous solution of hydrogen peroxide of a first concentration. The hydrogen peroxide solution is then evaporated into a water vapor component and a hydrogen peroxide vapor component. The evaporated solution is injected into the sealed chamber in repeated pulses. The injecting is terminated once a preselected second pressure, higher than the first pressure, is reached in the chamber. The pulse volume is selected to allow selective control of the condensation of the hydrogen peroxide vapor component to achieve a layer of micro-condensation of hydrogen peroxide on the article, which layer has a second hydrogen peroxide concentration higher than the first hydrogen peroxide concentration.12-10-2015
034408000 With heating 1
20110271546MULTIPLE STAGE EVEN-DRYING WOOD KILN SYSTEM AND METHOD - A wood kiln system and method that sequentially cures and dries layers of stacked wood during which each layer of wood is heated to 125 to 170 deg. F. as the kiln container is evacuated to approximately 13 inches of Hg for 8 to 12 hrs. After the wood has been cured, drying stage is commenced as the wood is continuously heated by evacuating the kiln container to 0.35 to 3 inches of Hg for 6 to 12 hrs. During the drying stage, a cold water bath is formed in the bottom of the kiln container. A condensation tank located between the vacuum pump and the kiln is used to continuously remove the water and water vapor from the kiln container. In one embodiment, the vacuum pump includes a primary vacuum pump serially connected to an auxiliary vacuum pump that allows the air to be continuously and gradually reduced in the kiln container.11-10-2011
034409000 Including addition of treating agent 4
20120297638Apparatus and Method for Drying and Sterilizing Objects in a Load - The removal of moisture from an object to be sterilized is provided through at least the steps of placing the load in the chamber, reducing the pressure within the chamber to increase the rate of evaporation of moisture from the load, monitoring over a predetermined period of time the increase in the quantity of vapor within the chamber resulting from evaporation of moisture from the load, admitting gas into the chamber and repeating the steps following placing the load into the chamber.11-29-2012
034410000 Treating agent is inert gas 2
20120066927METHOD AND DEVICE FOR DRYING MATERIALS - The invention relates to method and device for drying materials of plant and animal origin. The method includes heating a material to a temperature that does not cause denaturation of the original properties thereof, high-speed pulse vacuuming, maintaining the vacuum tor a period of time, and relieving the vacuum until atmospheric pressure is reached. The material is heated in a drying chamber and the vacuum is relieved using a dried air or gas heat earner with a temperature of up to 300° C. A device comprises two drying chambers with hermetically sealing doors, which are connected by pipes haying fast-acting valves to a receiver tank, heat exchangers and condensate receivers, a vacuum pump and a device for heating and delivering a heat carrier, which is situated in a separate thermally insulated chamber and is connected to the inlet of each drying chamber by means of thermally insulated air delivery conduits with valves.03-22-2012
20150300736REDUCED PRESSURE DRYING METHOD AND DEVICE OF A SUBSTRATE - A reduced pressure drying method and device for a substrate are presented. Firstly, a substrate is placed in a sealed space; then the surface to-be-dried of the substrate is partitioned into a predetermined number of sealed regions; thereafter, the sealed regions are subjected to pressure reduction through gas extraction; finally, the sealed regions are dried through gas insufflation, and then the substrate is taken out from the sealed space. The method can perform reduced pressure drying to various-sized substrates, ensuring uniform pressure and humidity and avoiding formation of reduced pressure drying speckles.10-22-2015
034411000 Treating agent is steam 1
20150082656PROCESS AND SYSTEM FOR RECOVERY OF THERMAL ENERGY FROM A STEAM DRYER - The invention concerns a method for the recovery of thermal energy from a steam dryer 03-26-2015
034412000 With heating 15
20100088924BLOWER SYSTEM TO REMOVE PRECIPITATION FROM AN ANTENNA - A blower system to remove precipitation from an antenna may include a blower air plenum extending substantially completely along one side of the antenna. A vent is in communication with the blower air plenum and extends substantially completely along the one side of the antenna to direct an airstream across a surface of the antenna to remove precipitation from the antenna. The vent may include a contour to conform to a contour of the one side of the antenna. The blower system may also include an air compressor to force air into the blower air plenum and out the vent to form the airstream flowing across the surface of the antenna.04-15-2010
20100115787Process For Producing Durable Products - The present invention relates to a process for preserving wood, said process comprising the following steps: (1) a modification step in which wood is heated to the modification temperature and is maintained at that temperature for a specific time; (2) a cooling step in which the wood is cooled; characterized in that the wood is heated and cooled by means of heating elements which are positioned in-between the wood. Prior to the modification step, a drying step can be carried out. According to further embodiments, the process is characterized in that one or more of the steps takes place under vacuum in a sealed chamber. Preferably, a pressure is applied to the wood during the steps, with the option of varying said pressure during the process. The invention also relates to an apparatus for implementing the process.05-13-2010
20100146808VACUUM DRYING METHOD - A vacuum drying apparatus and method to dry and cure paint is disclosed. The method provides a substantially particle free environment that shortens drying time, reduces cost and improves surface finish. The apparatus includes an enclosed drying tunnel that is maintained at a reduced pressure relative to ambient conditions. Heat lamps with the drying tunnel aid in curing and provide the desired particle free environment.06-17-2010
20120144690METHOD AND DEVICE FOR DRYING BULK CAPILLARY-POROUS MATERIALS - The present invention relates to the vacuum drying of capillary porous bulk materials.06-14-2012
20120204440Method for reconditioning or processing a FCR APG-68 tactical radar unit - A method for improving the manufacture and reliability of new, remanufactured, repaired or reconditioned Fire Control Radar APG-68 tactical radar systems (FCR) utilized in military aircraft and providing such units with extended useful life expectancies equivalent to or better than new of the FCR APG-68 unit high frequency, high voltage dual mode radar transmitters that are deployed in over 1000 state-of-the-art military aircraft such as the F-15, F-16 and F-18 fighter aircraft, and B-1 bombers. The novel method extends the mean lifetime of previously repaired and repairable FCR APG-68 tactical radar units and radar units and ageing transmitters from about 100 to a few hundred hours to about five hundred or more hours by the step of removing embedded moisture and absorbed moisture from the heterogeneous electronic components in the FCR APG-68 tactical radar unit.08-16-2012
20120260518DRYER - A dryer comprising an enclosure and a transporter for transporting one or more components therethrough between a first and a second opening. The dryer includes one or more heating elements and a first and a second duct within the enclosure. The first and said second duct each include a plurality of openings configured for discharging heated air towards the one or more components. An exhaust stack in fluid communication with an interior of the enclosure includes an exhaust blower for extracting fluid from within the enclosure, and one or more heating elements for oxidizing the vaporized compounds. The supply and the exhaust blowers cooperatively operate to induce infiltration of air through the first and the second opening. A method for operating the dryer is also provided.10-18-2012
20130081300VACUUM CYCLING DRYING - The invention generally relates to methods and systems of drying objects containing interior surfaces. In particular, the present invention provides a method which alternates vacuum and pressure with heated gases to enhance interior drying of parts. More particularly, the method cycles the chamber through a vacuum phase that rapidly removes vapor from the object both convectively and through boiling followed by a pressure phase that delivers heat and fresh gases to difficult regions of the objects to be dried.04-04-2013
20130152421Device and Method for Heat Treating Continuously Conveyed Sheet Materials - The invention relates to a device for performing heat treatments comprising at least one treatment module (06-20-2013
20130269206HYGIENIC RAZOR BLADE DRYER - A hygienic razor blade dryer is provided that comprises a housing having an interior, a razor blade holder disposed within the interior that is adapted to receive a razor blade, a dryer for drying a razor blade received in the razor blade holder, and a vacuum for evacuating the air within the interior to prevent moisture buildup in the air and on the razor blade and to inhibit oxidation on the blade surfaces. A sanitizer may also be provided to sanitize the razor blade before, during or after the dryer operation.10-17-2013
20140202027HEATING ARRANGEMENT AND METHOD FOR HEATING SUBSTRATES - The invention relates to a vacuum processing system for processing a substrate (07-24-2014
20140283408Vacuum Assisted Dehydration System - A vacuum assisted dehydration system including a vacuum chamber, a gas compressor, a heating coil, and a vacuum pump is provided. A sealing member removably attached to an opening of the vacuum chamber is opened to introduce one or more instruments into the vacuum chamber. The gas compressor, in fluid communication with the vacuum chamber, recirculates a pressurized gas into the vacuum chamber. The heating coil within the vacuum chamber heats the recirculating gas, which contacts the instruments positioned therein and transfers heat energy into interstitial cavities and to surfaces of the instruments or onto other moist components, for example, hands to vaporize moisture present therein. The vacuum pump, in fluid communication with the vacuum chamber, creates a negative gas pressure in the vacuum chamber to exhaust the vaporized moisture entrained in the heated recirculating gas from the vacuum chamber to dehydrate the instruments or the moist components.09-25-2014
20150020405Method of drying high-level radioactive wastes and device thereof - A method of drying high-level radioactive wastes and device thereof contains a suspension mechanism for hanging a manual elevating mechanism, and a shielding cover. The manual elevating mechanism couples with a basket for accommodating wastes by using a hanging rope, and the shielding cover is fixed below the suspension mechanism and in a moving path of the basket. The basket is moved to a storage tank containing water in which radioactive wastes are stored, and the radioactive wastes are pumped into the basket by means of a pump. The basket is then lifted above a water surface of the storage tank and received in the shielding cover, and then the shielding cover is moved into a water holder so as to drain waters in the basket. The basket is further moved onto a heating seat to be heated and a vacuum equipment is started to dry the radioactive wastes.01-22-2015
20150316320METHOD AND APPARATUS FOR VACUUM DRYING GRANULAR RESIN MATERIAL - Method and apparatus for drying granular resin material by drawing vacuum over heating resin material in a vessel, while periodically purging the vessel with the material therein with dry air and bathing the vacuum dried material with dry air until furnished to a processing machine.11-05-2015
20150342204METHOD FOR DRYING FOOD PRODUCTS - The present invention relates to a method for drying a food product, which comprises the step of: a) inserting the food product in an enclosure, the enclosure being defined by the vessel of a mixer; and b) drying the food product in the enclosure by applying a vacuum to the enclosure, in which method the supplying of heat to the product located inside the enclosure is carried out when the vacuum is applied to the enclosure during step b) such as to maintain and/or increase the temperature of said product during all or part of the process of drying by applying a vacuum to the enclosure, the supplying of heat being carried out by heat transfer between at least one heat-transfer fluid and the product and/or by irradiating said product with electromagnetic radiation.12-03-2015
20160151936VACUUM DRYING METHOD06-02-2016

Patent applications in class Gas or vapor pressure is subatmospheric

Patent applications in all subclasses Gas or vapor pressure is subatmospheric

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