Of Contacting Gas Humidity Patents (Class 34/557)
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Patent number: 11604027Abstract: A modular humidity control system is provided. An example system includes a body configured for attachment with a food storage housing. The body may define a closed circuit air flow path for circulating air through the food storage housing. The system also includes a desiccant element secured within the closed circuit air flow path that removes moisture from the moisture-laden air passing through the closed circuit air flow path, and stores the removed moisture. The system further includes a regeneration system that monitors a saturation of the desiccant element. In an instance in which the saturation of the desiccant element exceeds a saturation threshold, the regeneration system may evaporate at least a portion of the moisture stored by the desiccant element.Type: GrantFiled: June 21, 2019Date of Patent: March 14, 2023Assignee: CFA PROPERTIES, INC.Inventors: Andy Wu, Jason Begin, David Bulfin, Jereme Gilbert
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Patent number: 10209119Abstract: A system for estimating a flowable substrate level in a storage unit is disclosed. In one embodiment, the system includes a transmitter and a conductor that extend downwardly into a grain storage bin, which cycles through a range of frequencies in order to determine the resonant frequency of the conductor which changes depending on the amount of grain in the bin.Type: GrantFiled: September 1, 2017Date of Patent: February 19, 2019Assignee: Extron CompanyInventor: Randall G. Honeck
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Patent number: 9200829Abstract: A low temperature cooling and dehumidification system uses a reverse airflow arrangement to defrost a frosted cooling coil while not interrupting operation. Automatic air dampers are used to reverse the airflow at the proper time to initiate defrost of that section of frosted cooling coil. This system is useful for low temperature cooling and dehumidification in situations where the inlet air is above freezing, however exiting air below freezing can be supplied if desired. It is advantageous for operation if the coolant flow and temperature internal to the cooling coil are regulated to create the conditions for frost formation to begin closer to the air leaving side of the active cooling coil.Type: GrantFiled: September 24, 2013Date of Patent: December 1, 2015Inventor: Walter Stark
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Patent number: 8966785Abstract: A control method of a laundry treatment apparatus is disclosed. The control method of a laundry treatment apparatus includes a humidity measuring step of measuring a relative humidity of an accommodating space accommodating laundry, a target humidity setting step of setting a target relative humidity based on the relative humidity measured in the humidity measuring step, to dry the laundry, and a heated air supplying step of supplying heated air to the accommodating space based on the target relative humidity.Type: GrantFiled: December 13, 2010Date of Patent: March 3, 2015Assignee: LG Electronics Inc.Inventors: Hye Yong Park, Yang Hwan Kim
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Publication number: 20150020408Abstract: A system for drying or heating product using solar energy including an enclosure defining a kiln chamber in which a charge of the product is placed, the enclosure having at each side of the chamber at least one passage through which air from the kiln chamber can pass to be heated by solar energy impinging on the enclosure, and an air flow system having at least one fan for generating a circulating air flow within the kiln chamber whereby air passes from one side of the charge to the other, and an air supply for drawing air into each passage from the bottom part of the kiln chamber at opposite sides of the charge to move through the passage into an upper portion thereof for discharge into an upper part of the kiln chamber through one or more outlets leading into the upper part of the kiln chamber.Type: ApplicationFiled: May 25, 2011Publication date: January 22, 2015Applicant: SOLARKILNS HOLDINGS PTY LTDInventor: Gregory Weir
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Patent number: 8720080Abstract: A method and apparatus for drying a room within a building by sealing the room from outside ambient air ingress, heating the room internally, sensing humidity levels within the room, exhausting the air from within the room and drawing in outside ambient air, sensing water content within the room, and repeating the sequence until a dry status indication is received that the water content within the room has been reduced a predetermined level.Type: GrantFiled: June 25, 2009Date of Patent: May 13, 2014Assignee: DBK Technitherm LimitedInventors: Jonathan Robert Jayne, Mark Lee Robinson, Philip Harris, Daniel Court, Andrew Charles Habbershaw
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Publication number: 20140026435Abstract: A method for controlling a rotatable-drum laundry drier to dry laundry in a drum is provided. The control method includes the steps of memorizing, in a memory device of the laundry drier, a comparison threshold variable in time according to a predetermined profile, and, at predetermined drying times in the laundry drying cycle, measuring an electric quantity indicating the moisture in the laundry at the drying time; comparing, at each drying time, the measured electric quantity with the memorized comparison threshold corresponding to the drying time; and determining the end of drying cycle time on the basis of this comparison.Type: ApplicationFiled: November 28, 2011Publication date: January 30, 2014Applicant: Electrolux Home Products Corporation N.V.Inventors: Fabio Altinier, Michele Bisaro, Roberto Ragogna
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Publication number: 20140013719Abstract: A curing oven includes a set of pivoting, rotating trays within a curing chamber. The trays are attached to a mechanism that rotates the trays through a curing cycle, and the speed and timing of the rotation may be set by an operator, as desired. In a preferred embodiment, the oven includes a plurality of heating elements, a commercial dehumidifier, a recirculating fan and system, temperature and humidity sensors, and a series of pivoting trays attached to a motorized rotational assembly. The oven is controlled by a various controllers, which may be programmed to set the temperature, humidity levels, rotation speed and cycle time, and other aspects of oven operation. A loading and unloading chamber is effectively sealed off from the curing chamber within the oven, preventing or reducing a transfer of air between the curing chamber and the ambient air outside of the oven.Type: ApplicationFiled: July 13, 2012Publication date: January 16, 2014Inventor: Roger Blaine TRIVETTE
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Publication number: 20140007451Abstract: A device and method for storing, curing, drying hay and other fibrous plant materials which includes a flexible water impermeable bag, as injection means at one end and an adjustable vent at the opposite end, and preferably spacer means between stacks of baled materials. The bales are progressively loaded at one end as the bag is unrolled and extended progressively laterally for additional bales. After loading, the gas injection and vent means are connected at ends of the bag and are adjusted to generate a back pressure within the bag to partially inflate it. The flowrate of gas or air is adjusted to maintain the temperature within the bales within an optimal range, preferably between ambient temperature and 120 degrees Fahrenheit enabling beneficial curing until sufficient moisture has been removed to prevent mold growth.Type: ApplicationFiled: July 9, 2013Publication date: January 9, 2014Inventor: Owen Jackson Brown, JR.
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Publication number: 20130192083Abstract: Methods and apparatuses for drying electronic devices are disclosed. Embodiments include methods and apparatuses that heat and decrease pressure within the electronic device. Some embodiments increase and decrease pressure while adding heat. Other embodiments include a desiccator for removing moisture from the air being evacuated from the electronic device prior to the air reaching an evacuation pump. Further embodiments detect humidity within the low-pressure chamber and determine when to increase and/or decrease pressure based on the humidity. Still further embodiments determine that the device is sufficiently dry to restore proper function based on the detected humidity, and in some embodiments based on the changes in humidity while pressure is being increased and/or decreased. Still further alternate embodiments automatically control some or all aspects of the drying of the electronic device. Additional embodiment disinfect the electronic device.Type: ApplicationFiled: February 1, 2013Publication date: August 1, 2013Applicant: Revive Electronics, LLCInventor: Revive Electronics, LLC
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Patent number: 8381319Abstract: The invention refers to a cover, comprising a fleece arranged between a top and a bottom layer which holds a super absorber. At least in one layer a permeability area which is permeable to moisture is provided through which the cover can be moistened in a controlled way.Type: GrantFiled: May 12, 2006Date of Patent: February 26, 2013Assignee: Pervormance International GmbHInventor: Gabriele J. Stein
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Publication number: 20120096739Abstract: A clothes dryer is provided, the dryer comprising a drum, an intermediate air channel, a lint compartment, a lint collector, an outlet pipe, a moisture trap and pump, a heating element, and a fan, these several components being coupled together and defining a closed loop wherein air flows through the loop in response to operation of the fan. Upon operation of the dryer, the fan begins to force air through the closed loop and the heating element heats the air to within a predetermined temperature range at which point the heating element turns off and the dryer operates to dry the clothes by recycling the heated air through the closed loop over and over again until the clothes within the dryer are dry. Should the air temperature within the loop fall below the predetermined range, the heating element can intermittently activate to heat the air back to within the range.Type: ApplicationFiled: October 20, 2011Publication date: April 26, 2012Inventor: Johnnie Clark
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Publication number: 20120090194Abstract: The invention relates to a method and a device for handling carcasses of slaughtered animals during suspended transport after evisceration and before weighing in an abattoir by means of an air stream, in which a horizontally directed stream of conditioned air is made to flow around the carcasses at speeds of 1.5 to 6 m/s with a suction effect. Suspension conveyors are set up in a separate room in a meandering arrangement along parallel tracks transversely to the horizontally aligned extraction openings and inlet openings for air, and the inlet openings and extraction openings are connected through an air-conditioning plant, arranged outside the room, for dehumidifying and cooling the air extracted from the room.Type: ApplicationFiled: August 14, 2008Publication date: April 19, 2012Applicant: Promethon AGInventors: Richard Wieck, Heidrun Gräfe
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Publication number: 20110041562Abstract: An apparatus and method for actively dehumidifying the treating chamber of a laundry treating appliance to retard or eliminate the adverse effects of moisture-laden laundry remaining in the treating chamber or moisture remaining in the treating chamber or other areas of the appliance.Type: ApplicationFiled: August 21, 2009Publication date: February 24, 2011Applicant: WHIRLPOOL CORPORATIONInventors: BARBARA A. BALINSKI, KARL D. MCALLISTER
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Publication number: 20110030235Abstract: The invention proposes a method for drying bulk goods, in particular wood fibers and/or wood chips, wherein the bulk goods is continuously dried in a dryer (1), in particular a drum dryer. The vapor-gas mixture flows through the drum dryer (1) in a dryer circuit and is indirectly heated via at least one heat exchanger (4) by a burner waste gas that is heated in at least one burner (5). The drying vapors are supplied to the at least one heat exchanger (4). Upstream, downstream and/or within the at least one heat exchanger (4), at least a partial flow of the drying vapors are branched off to be conducted into the burner (5). The remaining partial flow is conducted to the dryer (1) again. The partial flow of drying vapors to the burner (5) is driven by means of at least one regulable partial vapor fan (10).Type: ApplicationFiled: January 9, 2009Publication date: February 10, 2011Inventors: Zdenek Brancuzsky, Günter Hensel, Karel Napravnik, Wolfgang Seifert
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Publication number: 20100293807Abstract: Apparatus is provided, including one or more drug patches (20) and a surface (22) configured to hold the one or more drug patches. A housing (24) is shaped to define one or more gas inflow openings (30) that are configured to facilitate drying of the patches by directing a flow of a gas toward the patches, a midline of the flow being at an angle of less than 20 degrees from a normal to the surface. Other embodiments are also described.Type: ApplicationFiled: October 29, 2008Publication date: November 25, 2010Applicant: TRANSPHARMA MEDICAL, LTD.Inventors: Yossi Bar-El, Giora Arbel, Meir Stern
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Publication number: 20100263226Abstract: A laundry drying device having a washing drum; a moisture determining device to determine a moisture content of process air evacuated from the washing drum, wherein the moisture determining device has at least one temperature sensor; and a cooling body to cool the process air, wherein the cooling body has an inlet side, an outlet side, and an inlet for a medium that flows through the cooling body or that is located in the cooling body. A first temperature sensor is arranged behind the inlet of the cooling body; a second temperature sensor is arranged at the outlet side of the cooling body to measure an outlet temperature of the medium; and a third temperature sensor is arranged at the inlet side of the cooling body to measure an inlet temperature of the medium. The medium is the process air or a coolant.Type: ApplicationFiled: December 5, 2008Publication date: October 21, 2010Applicant: BSH BOSCH UND SIEMENS HAUSGERÄTE GMBHInventors: Pilar Balerdi Azpilicueta, Iñigo Berazaluce Minondo, Esther Padilla Lopez, Roberto San Martin Sancho
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Publication number: 20100223807Abstract: Solar and electric energy dryers use the sun as a main energy-generating product, and electric power as an additional energy-generating product. Dryer has a single pipe system of fluidity of fluids regulated by a microprocessor /8/ and electromagnetic valves /30/. Pipes wind the inside of the dryer and gradually climb up to the top of the dryer, and then descend and fill in the horizontal space all up to the end of the dryer, at the same time these enable equal temperature balance along the cubic volume of the dryer. At the top of the dryer there is an outlet dome /34/ that accepts evaporations, directs it into an outlet pipe /7/, which is enclosed either by a cooling tank /23/ or a cooling spiral /18/ and extends it up to the condenser /49/. Ventilator /22/ pushes the air through the input pipe /13/ and back into the dryer. Solar panel /44/ is coupled to the dryer in an elastic coupling /17/ and makes a functional unity.Type: ApplicationFiled: November 6, 2008Publication date: September 9, 2010Inventors: Nenad Veselinovic, Milos Veselinovic
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Publication number: 20100132219Abstract: Systems and methods for improving drying efficiency are disclosed. The systems may include a dryer a motor operatively connected to the drum and configured to cause the drum to rotate. The systems further include a controller for controlling operation of the dryer and configured to alter a drum rotation direction during a drying cycle. The methods may include, at the beginning of the drying cycle, causing the drum to rotate in a first rotation direction thereby causing the contents of the dryer to traverse along the drum centerline. In addition, causing the contents of the dryer to traverse along the drum centerline comprises reversing the rotation direction during the drying cycle. Reversing the rotation direction promotes movement of the contents within the drum in the opposite direction.Type: ApplicationFiled: November 30, 2008Publication date: June 3, 2010Inventors: Soheil Etemad, Arnold R. Estravillo, Joseph Hardy Frazar
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Publication number: 20100050464Abstract: A clothes dryer has a drying drum with an airflow inlet and a motor for rotating the drum. A blower rotated by a fan motor flows air into, through, and out the drum. A refresh or touch-up de-wrinkle course is selected via a signal input on a control panel. Steam is supplied to the drum by a steam generating device, and heated air from a heater is supplied via the inlet. A controller operates the steam device and heater, in response to the course being selected, to supply to the drum a plurality of steam pulses of at least one first predetermined time and a heated air pulse after each steam pulse. Heated air pulses between steam pulses are intermediate pulses of at least one second predetermined time to reduce condensation in the dryer and the final pulse of heated air is of a duration to dry articles.Type: ApplicationFiled: December 29, 2008Publication date: March 4, 2010Applicant: MABE CANADA INC.Inventors: Nicolas Krzelowski, Mathieu Lamy
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Patent number: 7669350Abstract: A laundry room machine and a drying method thereof are provided. The laundry room machine may includes a payment device for collecting a payment for operation of the laundry room machine. The laundry room machine performs drying of laundry items for a preset dry time corresponding to a selected drying course. The drying method includes determining a condition of the laundry items by measuring a humidity level, and either sustaining the preset dry time or resetting a hot air supplying time and cooling time based on the determined condition of the laundry items.Type: GrantFiled: May 24, 2007Date of Patent: March 2, 2010Assignee: LG Electronics Inc.Inventors: Hea-Kyung Yoo, Tae-Hoon Lim
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Publication number: 20100011612Abstract: A method and apparatus for drying a room within a building by sealing the room from outside ambient air ingress, heating the room internally, sensing humidity levels within the room, exhausting the air from within the room and drawing in outside ambient air, sensing water content within the room, and repeating the sequence until a dry status indication is received that the water content within the room has been reduced a pre-determined level.Type: ApplicationFiled: June 25, 2009Publication date: January 21, 2010Inventors: Jonathan Robert Jayne, Mark Lee Robinson, Philip Harris, Daniel Court, Andrew Charles Habbershaw
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Publication number: 20100000112Abstract: A method for controlling the operation of a dryer comprising dispensing a treating chemistry from a dispensing system into a treating chamber of the dryer based on an output from the environmental drying sensor.Type: ApplicationFiled: July 2, 2008Publication date: January 7, 2010Applicant: WHIRLPOOL CORPORATIONInventors: JAMES P. CAROW, RYAN R. BELLINGER, FRANCESCO JATTA
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Publication number: 20090235555Abstract: A clothes drying cabinet which consists of a base, a frame, a cover and a control unit is disclosed. A heat source, a warm air cushion chamber and a clothes drying chamber are provided inside the clothes drying cabinet. The heat source comprises a fan motor and a PCT heating element. The frame is positioned on the base and supported by the hanger braces. The division plate for the warm air cushioning chamber forms the warm air cushioning chamber with the protection plate of the warm air channel in the lower parts and forms the cloth drying chamber. The frame is covered outside by the cover. The control unit comprises a control panel and switches. The clothes drying effect can be improved and the drying speed can be increased, furthermore the clothes drying cabinet is safe so that the danger due to clothes falling down can be prevented.Type: ApplicationFiled: September 30, 2007Publication date: September 24, 2009Inventor: Hu Jie Bo
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Publication number: 20090211109Abstract: A dryer according to the present invention includes a dry drum for loading the laundry; a driving motor driving the dry drum; and a steam generator installed at a side of the exterior of the dry drum and generating steam.Type: ApplicationFiled: May 22, 2006Publication date: August 27, 2009Applicant: LG ELECTRONICS INC.Inventors: Soung-Bong Choi, Hyeok Deok Kim, Deug Hee Lee, Seong Hae Jeong, Hung Myoung Cho
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Publication number: 20090172969Abstract: A drying apparatus and a controlling method thereof are provided. During an initial phase of drying operation according to a selected drying cycle, a point of terminating the drying operation is calculated based on a moisture level sensed by a moisture sensor and a moisture output quantity stored in the storage. Drying is performed up to the calculated point of drying operation termination.Type: ApplicationFiled: October 26, 2005Publication date: July 9, 2009Inventor: Sang Doo Kim
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Publication number: 20090090018Abstract: The invention refers to a cover, comprising a fleece arranged between a top and a bottom layer which holds a super absorber. At least in one layer a permeability area which is permeable to moisture is provided through which the cover can be moistened in a controlled way.Type: ApplicationFiled: May 12, 2006Publication date: April 9, 2009Inventor: Gabriele Stein
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Publication number: 20090090020Abstract: Dryer and method for controlling a drying time period which enables to indicate an increased remained drying time period to a user. The method includes the steps of re-setting a remained drying time period, and informing user an increased remained drying time period, whereby permitting to prevent the user from misunderstanding that the dryer is out of order.Type: ApplicationFiled: March 14, 2007Publication date: April 9, 2009Inventors: Yeon Sik Choi, Myoung Jong Kim
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Publication number: 20090090022Abstract: 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.Type: ApplicationFiled: October 7, 2008Publication date: April 9, 2009Applicant: HEMEMICS BIOTECHNOLOGIES, INC.Inventors: David H. HO, Stephen P. BRUTTIG
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Publication number: 20090038178Abstract: A clothes drier comprises a dehumidifying unit configured to dehumidify air exhausted from the drum, and to control an amount of water to be supplied thereto according to a drying level of clothes. As an amount of water supplied to the dehumidifying unit is controlled according to a drying level of clothes, a water consumption amount is reduced.Type: ApplicationFiled: July 31, 2008Publication date: February 12, 2009Inventors: Seung-Phyo AHN, Sang-Ik LEE, Byeong-Jo RYOO, Sung-Ho SONG, Jeong-Yun KIM, Yang-Hwan KIM, Jae-Hyuk WEE, Dong-Hyun KIM, Yoon-Seob EOM, Yang-Ho KIM
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Patent number: 7472494Abstract: A dehumidification plant for granular material provided with a compressed air source, control means for controlling the flow rate of the compressed air fed by the source, a heating chamber of compressed air which is in communication with the flow rate control means, a container of granular material to be dehumidified, diffuser means disposed inside the container, temperature sensor means arranged to detect the temperature of air leaving the container, and a programmable control unit. The dehumidification plant utilizes a compressed-air dehumidifying group located downstream of flow rate control means, and a flow rate adjusting group for controlling the dehumidified air coming from the dehumidifying group located upstream of the heating chamber.Type: GrantFiled: October 18, 2005Date of Patent: January 6, 2009Assignee: Moretto S.p.A.Inventor: Renato Moretto
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Publication number: 20080235977Abstract: In a laundry washing/drying machine involving drying by a heat pump cycle, in an initial stage of the drying operation the heat within an air circulation path is deficient and therefore it is impossible to effect quick heating of air on a drum inlet side up to a sufficiently high temperature. According to the present invention there is provided a drying unit capable of raising the drum inlet air temperature quickly up to a sufficiently high temperature in an initial stage of the drying operation and thereby shortening the drying time.Type: ApplicationFiled: March 28, 2008Publication date: October 2, 2008Applicant: Sanyo Electric Co., Ltd.Inventor: Osamu Kuwabara
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Publication number: 20080189978Abstract: Clothes drying and dewrinkling cabinet that comprises a closed and static enclosure (2) that defines an inner space (3) for housing clothes, an air flow generator (4) for circulating air through said inner space (3), heating means (5) for heating said air flow, and control means for controlling a drying and dewrinkling process acting on the air flow generator (4) and the heating means (41). The cabinet of the invention also comprises a sensor (7) that measures the temperature (T) and the humidity (H) of the air flow after said air flow has passed through the inner space (3), so that the control means perform the drying and dewrinkling process as a function of said temperature (T) and said humidity (H).Type: ApplicationFiled: March 13, 2006Publication date: August 14, 2008Inventors: Aitor Aizpuru Borda, Mikel Markotegi Ijurko, Kepa Bengoa Armendariz
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Patent number: 7093374Abstract: A clothes dryer and a method of controlling the clothes dryer. The method detects conditions of clothes using a sensor, and performs at least one of: a complex drying function to perform a drying operation, a deodorizing operation, and a wrinkle removing operation; a wrinkle removing function to perform the wrinkle removing operation and the drying operation; and a drying function to perform the drying operation, according to the detected conditions of the clothes. Accordingly, the clothes dryer is capable of not only drying the clothes, but also deodorizing the clothes and removing wrinkles. Additionally, the clothes dryer is capable of detecting conditions of clothes accommodated in a chamber, and drying and deodorizing the clothes as occasion demands, thus maintaining the clothes for a long period.Type: GrantFiled: March 3, 2004Date of Patent: August 22, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Byoung Yull Yang, Hyung-Gyoon Kim, Sang-Yeon Pyo, Seon-Woo Park, Hye Soon Yang, Seong Min Oak, Jae-Ryong Park, Hyun Sook Kim
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Patent number: 6941674Abstract: In a method and an apparatus for detecting a residual drying time of a clothes dryer, by detecting a quantity of moisture contained in clothes in a clothes dryer and displaying a residual clothes drying time on the basis of the detected moisture quantity, a residual clothes drying time can be displayed accurately.Type: GrantFiled: December 23, 2003Date of Patent: September 13, 2005Assignee: LG Electronics Inc.Inventors: Dae-Yun Park, Kyung-Seop Hong, Young-Hwan Park, In-Cheol Jeong, Soo-Young Oh, Si-Moon Jeon
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Patent number: 6931758Abstract: An apparatus for carrying out a method of controlling the moisture of tobacco material comprises a hollow rotating cylinder (6) having an inlet (4) and an outlet (8) for tobacco material, and a feeding device for supplying a moist air flow into the rotating cylinder (6) such that the moist air flow runs out from the inlet (4) toward the outlet (8) within the rotating cylinder (6). Temperature and relative humidity of the moist air flow supplied into the rotating cylinder (6) are within the range of 40-80° C. and 80-95%, respectively.Type: GrantFiled: August 23, 2004Date of Patent: August 23, 2005Assignee: Japan Tobacco, Inc.Inventors: Koji Sakamoto, Susumu Uchida, Katsuhide Yokota, Takashi Ogawa, Kazuo Yoshimoto
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Patent number: 6694640Abstract: A calender, a system, and a method of regulating the humidity in a calender. The calender includes a housing having at least two side pieces and a roll stack located at least partially between the side pieces, wherein a space is formed by the roll stack and the web between the side pieces, and a fan positioned to blow dry air into the space. The system is for regulating the humidity in a calender, the calender being used to treat a moisture-containing material web and including a housing having at least two side walls and a roll stack, the calender defining a space bounded at least by the roll stack, the web, and the at least two side walls, and includes a device for reducing the humidity of the space, wherein the humidity level in the space is reduced to a level which is below a saturation point. The method includes reducing the humidity of the space, wherein the humidity level in the space is reduced to a level which is below a saturation point.Type: GrantFiled: February 4, 2000Date of Patent: February 24, 2004Assignee: Voith Sulzer Papiertechnik Patent GmbHInventor: Franz Kayser
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Patent number: 6655046Abstract: A device and a process for drying thin layers or films which are manufactured by applying a coating mass, which is produced on an aqueous basis, to a support, the said layer or film being transported through a drying device having at least one drying zone, is characterized in that in at least one drying zone, designated as moisture-compensation zone, air is supplied which has a moisture content corresponding to the constant moisture content of the film to be prepared or the layer to be prepared.Type: GrantFiled: September 14, 2001Date of Patent: December 2, 2003Assignee: LTS Lohmann Therapie-Systeme AGInventors: Wolfgang Schäfer, Peter Schwarz, Rudi Brathuhn, Michael Hoffmann
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Publication number: 20030217481Abstract: A clothes dryer is provided with control elements which enable a user to set both a drying temperature and the amount of power sent to a main heating element of the dryer during a dryer cycle. In accordance with the most preferred form of the invention, an infinitely variable power supply controller is used to selectively establish the maximum power provided to the main heating element during the dryer cycle. The controller preferably is adjusted by a slider switch mounted on a control panel of the dryer. The switch is preferably provided with indicators to indicate the established power level.Type: ApplicationFiled: May 22, 2002Publication date: November 27, 2003Applicant: Maytag CorporationInventors: Jordan S. Bruntz, Joel L. Herr
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Patent number: 6595008Abstract: A process is provided for the safe storage of sodium percarbonate in a bulk container that is substantially closed to the ambient atmosphere. A temperature is measured at at least one position inside the sodium percarbonate stored in bulk and, with an increase in temperature within the range of 0.5 to 10° C. per day, in particular 1 to 5° C. per day, dry air is passed periodically or continuously through the bulk material until the increase in temperature has fallen to a value of less than 1° C. per day in particular less than 0.5° C. per day.Type: GrantFiled: December 21, 2001Date of Patent: July 22, 2003Assignee: Degussa AGInventors: Michael Scheibe, Dietmar Träumer, Rainer Kohlen, Wolfgang Leonhardt, Lothar Kaiser
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Patent number: 6568249Abstract: A method and apparatus for determining the saturated, surface dry (SSD) condition point of aggregates includes warm air-drying of a water saturated aggregate sample of known initial weight. The sample is rotated in an open mesh screened drum, and heated ambient air is passed radially through the drum and the sample to remove water. Initially surface water is removed, followed by pore water. The loss in water weight and the exit air relative humidity (EAH) is tracked by sensors and recorded. The EAH values change significantly at the SSD point. Following SSD point determination, the test procedure continues until all free water is removed from the sample to determine total moisture content of the sample.Type: GrantFiled: August 7, 2001Date of Patent: May 27, 2003Assignee: Gilson Company, Inc.Inventor: Patrick C. Devine
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Patent number: 6484417Abstract: An improved dryer (10) and drying methods are provided which increase overall dryer efficiency by maintaining substantially constant output air stream adiabatic saturation ratio and temperature values during the course of drying, notwithstanding the occurrence of upset conditions. The dryer (10) includes a dryer body (12), an input air heater assembly (14) including an air heater (32), and a control assembly (18). The dryer body (12) has a drying zone (30), with product inputs and outputs (20, 22) as well as an input (26) for a heated air stream and an output (28) for the cooled, moisture-laden output air stream. The dryer control assembly (18) includes temperature and humidity sensors (48, 50) coupled to controllers (54, 60) and a PLC (66). The controller (54) is coupled with an exhaust fan/damper unit (46) while controller (60) is connected with a fuel valve (36).Type: GrantFiled: February 2, 2001Date of Patent: November 26, 2002Assignee: Wenger Manufacturing, Inc.Inventors: Paul Tedman, Douglas Clark
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Patent number: 6430841Abstract: Liquid is removed from batches of substrates by apparatus and methods for drying substrates that have been wet in an elongated liquid bath. The substrates are moved relative to the bath and an elongated gas-filled volume at rates of movement selected according to the location of the batches of substrates in the bath or the volume. As an example, the substrates and the bath are separated at a controlled rate to form a thin layer of liquid on each substrate as each substrate enters the gas-filled volume. The gas-filled volume is defined by an elongated hot chamber and hot gas directed into the volume and across the substrates and out of the volume continuously transfers thermal energy to the substrates. The flow rate of the gas into the volume is related to introduction of the substrates into the bath to avoid disturbing the liquid in the bath.Type: GrantFiled: May 26, 2000Date of Patent: August 13, 2002Assignee: Lam Research CorporationInventors: Jonathan Borkowski, Oliver David Jones, Kenneth C. McMahon, Scott Petersen, Donald Stephens, Yassin Mehmandoust, James M. Olivas
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Patent number: 6311410Abstract: A method and device for drying a coated web. The coated web is first conveyed through a web heating unit (10, 32, 40), in which the temperature of the coated web is raised, typically to drying temperature, by directing jets of heating air at the coated web, the humidity a1 of the said heating air jets being higher than the humidity a2 of the drying air jets. After this the coated web is conveyed through at least one air dryer (34, 36, 38; 42, 44, 46), in which drying air jets are directed at the coated web for drying the coated web.Type: GrantFiled: January 5, 2001Date of Patent: November 6, 2001Assignee: Metso Paper, Inc.Inventors: Pertti Heikkila, Kari Juppi, Pasi Rajala
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Patent number: 6289606Abstract: An apparatus and method for control of moisture content of material such as thermoplastic pellets (80) in a hopper (30) is controlled by supplying dehumidified air from a dessicant bed (90) to the hopper (30) and returning air from the hopper (30) to the dessicant bed (90). A dew point sensor (10) in the return air path determines the moisture content of the material (80) in the hopper (30), and when the dew point drops to a pre-set level, a diverter (134) causes the return air flow to bypass the dessicant bed (90) and to be re-supplied to the hopper (30) without dehumidification. Two dessicant beds are provided, one of which is on-process while the dessicant in the other is regenerated.Type: GrantFiled: December 20, 2000Date of Patent: September 18, 2001Assignee: Novatec, Inc.Inventors: W. John Gillette, Paul M. Frank
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Patent number: 6280576Abstract: A method and arrangement for drying a paper to be surface-treated, in particular fine paper, in an after-dryer in a paper machine. The paper web is first dried in a forward dryer section of the paper machine by one or more groups with single-wire draw that are open downward on support of a drying wire, the paper web is then finished in a finishing section, e.g., surface-sized or coated, and thereafter, the paper web is dried by an upwardly open inverted group with single-wire draw. In the inverted group with single-wire draw, the tendency of curling formed in the paper web in the forward dryer section can be substantially eliminated and/or compensated for.Type: GrantFiled: July 31, 1997Date of Patent: August 28, 2001Assignee: Valmet CorporationInventors: Antti Kuhasalo, Pasi Ahonen
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Publication number: 20010015020Abstract: A method of drying wood comprises the step of drying wood in a drying chamber at a controlled temperature and a controlled humidity. The temperature and the moisture content inside the wood while being dried are monitored continuously or intermittently, and the temperature and the humidity in the drying chamber are controlled based on the resulting data.Type: ApplicationFiled: February 5, 2001Publication date: August 23, 2001Applicant: Wood Drying ResearchInventor: Taira Uehara
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Patent number: 6161311Abstract: An apparatus and method for reducing particles in reactors. The apparatus includes an enclosure for processing the semiconductor wafers. The enclosure has a wafer handling chamber connected by an isolation gate valve to a processing chamber. Additionally, the apparatus includes pipes for delivering a purge gas into the wafer handling chamber. The purge gas is used to eliminates particles from the enclosure. The apparatus also includes a pilot operated back pressure regulator for regulating the delivery and removal of the purge gas from the enclosure. The apparatus actuates the isolation gate valve in a controlled rate to reduce disturbances from the purge gas entering into the enclosure. The apparatus also includes a Bernoulli wand for lifting and holding a single semiconductor wafer. A dome loaded regulator is used to control the ramp rates of the gas to the Bernoulli wand. The dome loaded regulator is actuated by a pilot gas.Type: GrantFiled: July 10, 1998Date of Patent: December 19, 2000Assignee: ASM America, Inc.Inventors: Allan Doley, Dennis Goodwin, Kenneth O'Neill, Gerben Vrijburg, David Rodriguez
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Patent number: 6141887Abstract: A system and method for sensing the dryness of clothing articles in a clothes dryer. In one embodiment, the clothes dryer uses a temperature sensor and a phase angle sensor to determine the dryness of the clothing articles as a function of the heated air temperature and the motor phase angle. In another embodiment the clothes dryer uses a humidity sensor to determine the dryness of the clothing articles as a function of the humidity of the heated air temperature. In a third embodiment the clothes dryer uses a temperature sensor, a phase angle sensor, and a humidity sensor to determine the dryness of the clothing articles as a function of the heated air temperature, the motor phase angle, and the humidity of the heated air temperature.Type: GrantFiled: March 13, 1997Date of Patent: November 7, 2000Assignee: General Electric CompanyInventors: Yu-To Chen, Mark Edward Dausch, Nicolas Wadih Chbat, Vivek Venugopal Badami
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Patent number: 6134953Abstract: A process for controlling the water content in products stored in an enclosure wherein the process includes measuring at at least one point within the product a value which represents a partial pressure of water vapor at the point within the product when the product is in a state of equilibrium and comparing the measured value with a range of reference values and thereafter modifying the atmosphere within the enclosure if the measured value falls outside a predetermined range.Type: GrantFiled: February 16, 1999Date of Patent: October 24, 2000Inventor: Eric Verheecke