Temperature Of Gas Or Vapor Regulated By Other Drying Variables Patents (Class 34/495)
  • Patent number: 10443184
    Abstract: A laundry treating apparatus comprises a drum receiving clothes; a fan supplying air to the drum; a heater heating the air supplied to the drum; and a dry level sensing unit determining a dry level of the clothes. A control method comprises setting a dry time; supplying air to the clothes by operating the fan or operating the fan and the heater, and controlled to be performed for the dry time; and resetting the dry time, when the dry level measured by the dry level sensing unit at a time past a preset reference time period from the start of the air supply step is less than a preset reference dry level, wherein resetting the dry time step adds more time to the reference time period.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: October 15, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Simong Park, Ingeon Lee
  • Patent number: 8984768
    Abstract: A method and an apparatus for drying a piece of textile which is impinged upon by an air flow having a varied partial steam pressure to evacuate moisture. The method and apparatus are particularly suitable for drying a piece of textile with a layered structure having a semi-permeable membrane.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: March 24, 2015
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventor: Henrik Volkers
  • Patent number: 8966785
    Abstract: 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: Grant
    Filed: December 13, 2010
    Date of Patent: March 3, 2015
    Assignee: LG Electronics Inc.
    Inventors: Hye Yong Park, Yang Hwan Kim
  • Patent number: 8959794
    Abstract: A control system for dryers in which the rotation speed of the motors are changed through frequent on/off connections to the electric power line. In accordance with the invention this task is solved by interrupting the electric power driving the electric motor for short periods in such a way that the motor does not come to a complete standstill or remains at a constant speed below the maximum speed. The motor power interruption or application is based upon readings of sensors reading dryer parameters other than the actual speed of the motor being controlled.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: February 24, 2015
    Inventor: Roderich W. Graeff
  • Patent number: 8919010
    Abstract: The present invention relates to a dryer which can sense a laundry amount and a dryness, and a method for controlling the same. The dryer includes a drum (3) for holding a drying object, a heater (5a, 5b) for supplying hot air to an inside of the drum (3), a sensing unit (20) for providing a pulse signal depending an contact to the drying object in the drum (3), a microcomputer (60) for determining a load and dryness of the drying object with reference to the pulse signal from the sensing unit (20) to control a general drying course. According to this by providing a new system of sensing means in which the load and the dryness can be determined, not by using a direct contact system with the electrode sensor, but by using a number of contact to the laundry, the present invention permits to provide more accurate and safer system.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: December 30, 2014
    Assignee: LG Electronics Inc.
    Inventor: Young Jin Doh
  • Patent number: 8832966
    Abstract: The invention relates to a method of determining a fluffing state of laundry based on a determined temperature indicative of the surface of the laundry.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: September 16, 2014
    Assignee: Whirpool Corporation
    Inventors: Farhad Ashrafzadeh, James P. Carow, Layne E. Heilman, Shreecharan Kanchanavally
  • Patent number: 8695229
    Abstract: A laundry machine, more particularly, a dryer and a control method of a dryer may be disclosed. A control method of a dryer includes (a) of supplying an additive to a drum in an initial part of a drying cycle for drying a drying object; and (b) of supplying an additive to the drum in a last part of the drying cycle.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: April 15, 2014
    Assignee: LG Electronics Inc.
    Inventors: Chul Jin Choi, Sang Hun Bae, Yang Hwan Kim, Min Ji Kim
  • Patent number: 8695231
    Abstract: A control method for drying clothes is disclosed. The method finds a difference in surface temperature between clothes catching air blow and the same clothes catching no air blow, and then determines a degree of dryness in the clothes based on the difference. Based on the degree of dryness, the method determines at what time heating should start.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: April 15, 2014
    Assignee: Panasonic Corporation
    Inventors: Yasuyo Sugimoto, Tsutomu Katou, Tetsuya Ueda, Takuya Kotanagi, Ippei Oda, Kazuhiro Taniguchi
  • Patent number: 8661706
    Abstract: A method for controlling the operation of a clothes dryer by determining a load size estimation based on at least one of a temperature variation of the laundry load and a delay time wherein the delay time is a time it takes for the temperature variation to satisfy a predetermined threshold.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: March 4, 2014
    Assignee: Whirlpool Corporation
    Inventor: Ryan R. Bellinger
  • Patent number: 8650771
    Abstract: A method for operating a household appliance used for taking care of laundry. In the method, a Peltier heat pump of the household appliance is activated and is supplied with electric power for drying the laundry. The power supplied to the Peltier heat pump is varied during the drying process in accordance with a reached process phase of the drying process.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: February 18, 2014
    Assignee: BSH Bosch und Siemens Hausgerate GmbH
    Inventors: Klaus Grunert, G√ľnter Steffens, Andreas Stolze
  • Publication number: 20130219741
    Abstract: A washing machine and a control method therefore are disclosed. The washing machine includes a cabinet (10); a tub (100) fixed to the cabinet (10); a drum (300) rotatably provided in the tub (100); a dry duct (20) which heats air exhausted from the tub (100) a predetermined temperature, to re-supply the heated air to the tub (100); condensation unit (170) which condenses moisture on at least a predetermined area of an inner circumferential surface of the tub (100) by heat-exchanging external air of the cabinet (10) with at least predetermined area of an outer circumferential surface of the tub (100); and sensing unit (410) which senses the amount of condensate generated in the tub (100). A washing machine and a control method thereof are disclosed.
    Type: Application
    Filed: September 30, 2011
    Publication date: August 29, 2013
    Inventor: Sangwook Hong
  • Publication number: 20130086812
    Abstract: An apparatus and method for controlling a drying cycle of a laundry treating appliance by monitoring a temperature of the exhaust air flow.
    Type: Application
    Filed: October 6, 2011
    Publication date: April 11, 2013
    Applicant: WHIRLPOOL CORPORATION
    Inventors: RYAN R. BELLINGER, DAVID J. KMET, PETER J. RICHMOND
  • Patent number: 8250776
    Abstract: A method of operating and managing a laundry room machine that performs a washing operation and a drying operation according to a payment made by customers is provided. The method includes setting information of payments and operating conditions and setting operating conditions according to a payment additionally inserted while a drying operation is performed, receiving information of a payment insertion from the payment device and operating a predetermined operation according to the set operating conditions, and receiving information of an additional payment insertion from the payment device while a drying operation is performed and performing an additional drying operation according to the information of the additional payment insertion based on the setting operating conditions according to the payment additionally inserted while the drying operation is performed.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: August 28, 2012
    Assignee: LG Electronics Inc.
    Inventors: Hea-Kyung Yoo, Tae-Hoon Lim
  • Patent number: 8156660
    Abstract: A method and apparatus for drying clothes by adjusting the heat input into a drying chamber of a clothes dryer based on the airflow rate through the drying chamber.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: April 17, 2012
    Assignee: Whirlpool Corporation
    Inventor: James Phillips Carow
  • Patent number: 7911326
    Abstract: A master generator that updates time data of remote devices comprises an acquisition module, a clock module, an encoding module, and a transmission module. The acquisition module acquires time data representing current time of day. The clock module receives and stores the time data from the acquisition module and periodically updates the time data. The encoding module encodes the time data from the clock module into time messages. The transmission module selectively superimposes the time messages onto a power signal.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: March 22, 2011
    Assignee: Marvell World Trade Ltd.
    Inventor: Sehat Sutardja
  • Patent number: 7900373
    Abstract: The present invention provides a method for conditioning semiconductor wafers and/or hybrids having the steps: preparation of a space (1) which is at least partially enclosed and has a wafer/hybrid holding device (10) which is located therein and has the purpose of holding a semiconductor wafer and/or hybrid; and conduction of a dry fluid through the wafer/hybrid holding device (10) in order to heat-treat the wafer/hybrid holding device (10); wherein at least a portion of the fluid leaving the wafer/hybrid holding device (10) is used to condition the atmosphere within the space (1). The invention also provides a corresponding device for conditioning semiconductor wafers and/or hybrids.
    Type: Grant
    Filed: April 15, 2003
    Date of Patent: March 8, 2011
    Assignee: ERS Electronic GmbH
    Inventor: Erich Reitinger
  • Patent number: 7735239
    Abstract: A drying machine according to the present invention includes an interface unit connected to a separate washing machine with a data communication line for receiving load information from the washing machine, a rotatable drum containing a load of wet clothes which are previously washed by the washing machine, and an air supply system coupled to the drum for supplying dry air into the drum. The machine further includes a heater coupled to the air supply system for heating the dry air, and a dryer controller generating a control signal to the heater in accordance with a set of operation values which are determined based on the load information.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: June 15, 2010
    Assignee: LG Electronics Inc.
    Inventors: Hae Deog Jeong, In Haeng Cho, Jae Suk Yang
  • Patent number: 7669350
    Abstract: 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: Grant
    Filed: May 24, 2007
    Date of Patent: March 2, 2010
    Assignee: LG Electronics Inc.
    Inventors: Hea-Kyung Yoo, Tae-Hoon Lim
  • Publication number: 20090320320
    Abstract: The present invention is a method of drying clothing. The method of drying clothing involves providing a dryer, preferably a coin-operated clothes dryer. The dryer contains a heat source in thermal communication with the dryer. Next, a user inserts clothes into the dryer and initiates a drying cycle to reduce the overall moisture within the clothes. To initiate a drying cycle, the user purchases a predetermined period of time that is at least one block of time. The dryer is turned on and the heat source is then operated at a first drying temperature, preferably 160.degree. F., while a sensor detects the level of moisture within the clothes. Once the level of moisture within the clothes is below a predetermined level, the heat source is lowered to a second operating temperature, preferably 100.degree. F. This method of reducing heat conserves energy to operate the dryer and helps avoid over-drying of clothes.
    Type: Application
    Filed: September 10, 2009
    Publication date: December 31, 2009
    Applicant: American Dryer Corp.
    Inventor: Dennis Slutsky
  • Publication number: 20090255146
    Abstract: The invention relates to a method of supplying steam (38) to a fabrics storage compartment (6) of a treatment apparatus (2), in particular a dryer, a refreshment apparatus or a washing machine having drying function, comprising the steps of: flowing air through the storage compartment (6) until a predefined temperature and/or humidity has been effected; and supplying steam (38) at a predefined flow and/or temperature to the storage compartment (6). The invention also relates to a method of supplying steam (38) to a fabrics storage compartment (6) of a treatment apparatus (2), in particular a dryer, a refreshment apparatus or a washing machine having drying function, wherein the steam flow and/or the temperature of the steam (38) supplied into the storage compartment (6) is set in dependency of at least one process parameter.
    Type: Application
    Filed: June 1, 2007
    Publication date: October 15, 2009
    Applicant: Electrolux Home Products Corporation N.V.
    Inventors: Hans-Joachim Klug, Thomas Loy
  • Publication number: 20080184588
    Abstract: A coin-operated dryer includes a tumbler and heating means for providing heated air to the tumbler. One or more sensors are coupled to the dryer and to a controller, which is configured to receive information from the sensor(s). The controller uses the information received from the at least one sensor to control the heating means. Thus, the heating means can be turned off or reduced prior to expiration of a paid for drying time, thereby mitigating energy waste.
    Type: Application
    Filed: June 27, 2006
    Publication date: August 7, 2008
    Inventors: Soren Juul Somod, Gary Brown
  • Patent number: 7313874
    Abstract: A dryer is disclosed. The dryer includes dryer includes a door opening sensing unit sensing an opening of a door, a heater heating air provided in a drum, and a microcomputer determining an error in the heater based on an internal temperature condition of the drum, which changes in accordance with a driving time of the heater, and setting a new driving time of the heater, when the door is open before the driving time of the heater being counted reaches a predetermined driving time.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: January 1, 2008
    Assignee: LG Electronics Inc.
    Inventor: Tae In Park
  • Patent number: 7173538
    Abstract: An apparatus, system, and method provide drying procedure information through a user interface. A monitoring device transmits drying procedure data measured by sensors within a structure undergoing the drying procedure to a server. In response to requests received through a communication network from a user interface, the server transmits the drying procedure information that is presented through the user interface. A variety of information and services related to the drying procedure may be provided through the user interface.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: February 6, 2007
    Assignee: RM2, Inc.
    Inventors: Mark A. Pedraza, Richard G. Lubeski, Mark A. O'Connell
  • Patent number: 7080464
    Abstract: A method for detecting the presence of a synthetic fabric load during an automatic drying cycle in an automatic dryer avoids premature termination of the automatic drying cycle and ensures that the synthetic fabric items are dried according to a user's desired dryness level. The presence of the synthetic fabric load is detected by determining a duration of a first heating cycle, determining a duration of a second heating cycle, and determining the presence of the synthetic fabric load based on the durations of the first and the second heating cycles.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: July 25, 2006
    Assignee: Whirlpool Corporation
    Inventors: David L. Tarnowski, Mark F. Kendall
  • Patent number: 7024799
    Abstract: The invention relates to a method for treating products with air in order to enable the conservation, storage and use thereof. Said invention also relates to a device for treating such products and the products obtained using said treatment method. The products (P) to be treated, such as a hay drier or other similar agricultural products, are loaded into a closed space (20) that is connected to a thermodynamic machine (21) which is controlled using a programmable automaton (22) and which is powered by an electrical cabinet (25). Three mass of water in air sensors (Q1, Q2 and Q3) determine the operation of the machine according to the desired treatment objectives both in terms of moisture in relation to the product treated and power consumption. The invention is suitable for treating diverse products such as agricultural products.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: April 11, 2006
    Assignee: Oddeis S.A.
    Inventor: Maurice Perret
  • Patent number: 6931759
    Abstract: An apparatus for sensing a dryness degree in an exhaust type clothes dryer and a control method using the same, includes an electrode sensor for sensing a clothes drying state based on the humidity of the clothes in the drum, and a thermistor for sensing the temperature of the air discharged after drying the clothes. By comparing the clothes drying state and discharged air temperature, the operation of the dryer is controlled, so that the drying of clothes can be accurately performed, thus to improve efficiency and performance of an exhaust type clothes dryer.
    Type: Grant
    Filed: January 21, 2002
    Date of Patent: August 23, 2005
    Assignee: LG Electronics Inc.
    Inventors: Hae-Deog Jeong, Soon-Jo Lee
  • Patent number: 6807750
    Abstract: An apparatus and method for controlling the removal of moisture from seed cotton in a cotton gin. The moisture level and rate of seed cotton entering a seed cotton dryer stage of a cotton gin are measured, and, based on those measurements and the desired moisture level of the seed cotton, the seed cotton dryer stage of the cotton gin is controlled to remove a precise amount of moisture from the seed cotton.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: October 26, 2004
    Assignee: Cotton Moisture, LLC
    Inventors: Gene C. Lewis, Steven E. Lewis, Jerry B. Wright, Jr.
  • Patent number: 6530160
    Abstract: A method for drying grain in a bin is provided. The method includes gathering temperature and moisture data from various points in and around the bin. The data are integrated with a quantitative algorithm of direct differential vapor pressure analysis. The grain is then conditioned in response to results obtained from the quantitative algorithm of differential vapor pressure analysis.
    Type: Grant
    Filed: May 17, 2000
    Date of Patent: March 11, 2003
    Inventor: William L. Gookins
  • Patent number: 6519871
    Abstract: A method and apparatus for operating an automatic cycle of a clothes dryer wherein after initiation of an automatic cycle, a CPU displays the expected time remaining during the current cycle. At various times during the cycle, the expected time remaining is updated by comparing the time required to reach certain moisture levels of the articles contained therein to reference times. The comparison also results in the expected times being updated for future uses of the clothes dryer. Finally, the invention includes a system for updating the amount of time required to reach a desired final temperature during a cooldown sequence.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: February 18, 2003
    Assignee: Maytag Corporation
    Inventors: Douglas W. Gardner, Michael D. Lafrenz, Kim L. Wright
  • Patent number: 6449875
    Abstract: A method for heating bulk materials, especially granular plastic material, in which the bulk material is fed to a vessel and exits the vessel based on the consumption. A heat-transfer gas flow is simultaneously fed to the vessel and conducted either cocurrently with or countercurrently to the flow of granular material. The gas inlet temperature or quantity of gas are thereby varied in such a way that the temperature of the granular material at the outlet corresponds to a target temperature value required for the granular material.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: September 17, 2002
    Assignee: Mann & Hummel Protec GmbH
    Inventors: Achim Becker, Michael Zlotos
  • Patent number: 6446357
    Abstract: A method and apparatus for controlling the drying cycle of a dryer by utilizing fuzzy logic control. Control is accomplished by first monitoring the moisture level of a clothes load in the dryer. From the monitored moisture information, variables such as the elapsed time from the start of the drying cycle to a point when no significant moisture is detected for a specified time period and the number of times higher moisture registrations occur during another specified time period are determined. Based on the determined variables, fuzzy logic is used to determine characteristics particular to the clothes load being dried, such as size of the load. Using the determined characteristics in conjunction with user settings more accurate control of the time of drying heat application, reduced drying heat application and cool down time can be accomplished.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: September 10, 2002
    Assignee: Whirlpool Corporation
    Inventors: Christopher J. Woerdehoff, Patrick J. Glotzbach, Andrew C. Reck, Joseph M. Szynal, Beth A. Maddix
  • Patent number: 6405453
    Abstract: An arrangement for drying material in a selected drying location by a heated and flowing drying stream wherein the temperature and relative humidity levels of the drying stream are sensed upstream and downstream of such selected drying location and are relatively and comparatively controlled to arrive at a selected treated material moisture with comparatively minimal energy input.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: June 18, 2002
    Assignee: Cissell Manufacturing, Inc.
    Inventors: Naom Salameh, Stanley T. Wheeler
  • Patent number: 6286229
    Abstract: The present invention provides a method of treating board-like material with a gaseous treatment agent and an apparatus for implementing the method. According to the method, a gaseous treatment agent is passed through the board-like material being treated. The board-like material is introduced into at least one treatment zone, where the gaseous treatment agent is contacted with at least one side of the board-like material and is caused to pass through the thickness of the material. The properties of the gaseous treatment agent, including its temperature, moisture content and/or composition, are controlled as needed in order to achieve a desired effect on the board-like material being treated. The apparatus includes a chamber and a support for the board-like material in the chamber. When positioned in the chamber, the board-like material forms at least part of a partition separating the chamber into two regions.
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: September 11, 2001
    Assignee: Valmet Panelhandling Oy
    Inventors: Kari Simolin, Erno Tulonen
  • Publication number: 20010015020
    Abstract: 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: Application
    Filed: February 5, 2001
    Publication date: August 23, 2001
    Applicant: Wood Drying Research
    Inventor: Taira Uehara
  • Patent number: 6230419
    Abstract: An apparatus and method for drying small lots of product, for example ear corn. The method includes simultaneously directing air flow through the product while weighing the product from time to time to derive moisture content to the product. Air temperature and flow can be adjusted to desired levels for controlling the drying process. The apparatus includes an air permeable product bin and a docking station for receiving the bin. A scale is associated with the docking station to obtain weight measurements during the drying process. An air plenum supplies controlled air flow to the docking station. The structure allows monitoring of moisture content during drying and control of air flow. The temperature can also be controlled through control of an air gate from a main hot and cold air plenum.
    Type: Grant
    Filed: February 4, 2000
    Date of Patent: May 15, 2001
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: James L. Hinter, Charles G. McBee
  • Patent number: 6223454
    Abstract: A method for drying a moist organic material which is continuously supplied in a stream includes passing hot air through the moist organic material in a part of the stream to absorb an amount of moisture, whereby the moist organic material cools the hot air into warm air. The warm air is reheated after it exits the moist organic material to form reheated air with increased capability of absorbing moisture, and the reheated air is passed through the moist organic material further upstream, which has a greater moisture content. The drying can preferably be performed in five minutes or less. A method for drying moist organic material using hot air includes providing the moist organic material in a continuous material stream, and providing the hot air in a continuous air stream. The air stream flows in a direction generally opposite to that of the material stream.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: May 1, 2001
    Assignee: Heartland Forage, Inc.
    Inventors: Conrad F. Fingerson, Donald W. Eickhoff
  • Patent number: 6163979
    Abstract: In a method for controlling a freeze drying process, a frozen product is arranged on temperature controlled surfaces (12) in an air-evacuated chamber (1) and undergoes a main drying and after-drying phase. During the main drying phase, the temperature of the ice surrounding said product is continuously measured. The pressure in the chamber and/or the temperature of the surfaces are modified during transition from the main drying phase to the after-drying phase. In order to avoid longer idle periods between the chamber (1) and the evacuation device (3, 4, 14) and to determine transition from the main drying phase to the after-drying phase, the pressure and/or the temperature of the surfaces during said transition are modified according to changes int he temperature of the ice.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: December 26, 2000
    Assignee: Steris GmbH
    Inventors: Georg-Wilhelm Oetjen, Peter Haseley, Hubert Klutsch, Marion Leineweber
  • Patent number: 6141887
    Abstract: 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: Grant
    Filed: March 13, 1997
    Date of Patent: November 7, 2000
    Assignee: General Electric Company
    Inventors: Yu-To Chen, Mark Edward Dausch, Nicolas Wadih Chbat, Vivek Venugopal Badami
  • Patent number: 6098310
    Abstract: A system and method for predicting the dryness of clothing articles in a clothes dryer. In one embodiment, the clothes dryer uses a temperature sensor, a phase angle sensor, and a humidity sensor to generate signal representations of the temperature of the clothing articles, the motor phase angle, and the humidity of the heated air in the duct, respectively. A controller receives the signal representations and determines a feature vector. A neural network uses the feature vector to predict a percentage of moisture content and a degree of dryness of the clothing articles in the clothes dryer. In another embodiment, the clothes dryer uses a combination of sensors to predict a percentage of moisture content and a degree of dryness of the clothing articles.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: August 8, 2000
    Assignee: General Electric Company
    Inventors: Yu-To Chen, Nicolas Wadih Chbat, Vivek Venugopal Badami
  • Patent number: 6032384
    Abstract: A method for drying a moist organic material which is continuously supplied in a stream includes passing hot air through the moist organic material in a part of the stream to absorb an amount of moisture, whereby the moist organic material cools the hot air into warm air. The warm air is reheated after it exits the moist organic material to form reheated air with increased capability of absorbing moisture, and the reheated air is passed through the moist organic material further upstream, which has a greater moisture content. The drying can preferably be performed in five minutes or less. A method for drying moist organic material using hot air includes providing the moist organic material in a continuous material stream, and providing the hot air in a continuous air stream. The air stream flows in a direction generally opposite to that of the material stream.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: March 7, 2000
    Assignee: Heartland Forage, Inc.
    Inventors: Conrad F. Fingerson, Donald W. Eickhoff
  • Patent number: 5992047
    Abstract: A real-time process and apparatus for controlling conditions in a lumber drying kiln include measuring the shrinkage of a sample of the lumber across the longitudinal axis of the lumber and over time. A slope of the curve is analyzed and can be used to determine when a stress peak and stress reversal occurs in the lumber sample. The detection of the stress peak indicates that the drying schedule of the kiln should be incremented to the next drying step. According to the invention, the schedule is incremented in the fastest possible way without degrading the quality of the lumber.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: November 30, 1999
    Inventor: James J. Fuller
  • Patent number: 5960558
    Abstract: A in-bin grain drying system is the subject of the present invention. A boiler having a variable capacity Btu output heats an ethylene glycol/water heating fluid which is circulated through hydronic coils. Fans move ambient air through the hydronic coils and the dry heated air is circulated to the plenum of the grain bin. The air which enters the bin is less moisture laden than in other drying systems, particularly those which are heated by propane flame. The temperature of the returning fluid is sensed and a fuel supply controller adjusts the amount of fuel supplied to the boiler and thus the Btu output. Accordingly the desired temperature of the air entering the plenum chamber is constant regardless of ambient outside temperature or relative humidity.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: October 5, 1999
    Inventor: Pierre Bourgault
  • Patent number: 5873182
    Abstract: A real-time process and apparatus for controlling conditions in a lumber drying kiln include measuring the shrinkage of a sample of the lumber across the longitudinal axis of the lumber and over time. A slope of the curve is analyzed and can be used to determine when a stress peak and stress reversal occurs in the lumber sample. The detection of the stress peak indicates that the drying schedule of the kiln should be incremented to the next drying step. According to the invention, the schedule is incremented in the fastest possible way without degrading the quality of the lumber.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: February 23, 1999
    Inventor: James J. Fuller
  • Patent number: 5822883
    Abstract: A dryer system comprising a particle counter that measures the level of particulates in the dryer is disclosed. The dryer system is particularly adapted for drying garments to be worn in clean room environments. The dryer system preferably comprises an enclosure having a rotatable drum for receiving and tumbling garments or other clothing, a fan and motor assembly for providing airflow through the drum, an exhaust duct near the drum and in communication with the drum, a sampling tube in the exhaust duct, and a particle counter for measuring the concentration of particles withdrawn through the sampling tube from the drum. A sampling line may optionally be incorporated in the dryer inlet for withdrawing one or more samples of inlet air and transferring to the particle counter. A check may then be made to ensure that the incoming air is sufficiently clean.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: October 20, 1998
    Assignee: White Consolidated Industries, Inc.
    Inventor: Steven A. Horwitz
  • Patent number: 5797194
    Abstract: The present invention is an improved method and apparatus for supplying electromagnetic energy to a body having at least one substantially planar surface comprises moving over the planar surface a self-propelled container housing a source of electromagnetic energy and having an open side which is substantially perforate to the electromagnetic energy thereby permitting transmission of the energy from the container to the body while all other surfaces of the container substantially block transmission therethrough. Concurrently with the movement of the container responding within the container to at least one selected parameter to control the movement of the container over the planar surface.
    Type: Grant
    Filed: October 24, 1996
    Date of Patent: August 25, 1998
    Assignee: Microz Sweden AB
    Inventor: Leif Zettergren
  • Patent number: 5755041
    Abstract: Disclosed is a dryer device and a drying control system utilizing an infrared sensor that measures the temperature of garments or items being dried in a drying device. The invention provides significant improvement over conventional techniques using temperature sensors, or such sensors in combination with moisture or humidity sensors. Also disclosed are methods for controlling drying temperatures and methods for determining drying cycle completion.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: May 26, 1998
    Assignee: White Consolidated Industries, Inc.
    Inventor: Steven A. Horwitz
  • Patent number: 5689848
    Abstract: The invention relates to a method of dry cleaning textiles which are washed with solvent and dried by hot air, the solvent being recovered after condensation, the invention being characterised in that the solvent concentration is measured at the point where it is highest and temperature is measured, both being measured continuously throughout the whole of the drying process and the values are processed in a computer, and the concentration in the supply of hot air is controlled as a function of the relationship of concentration, acting as the pilot value, to temperature along a characteristic.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: November 25, 1997
    Assignee: SATEC GmbH
    Inventors: Hans-Udo Saal, Ralf Mathias Saal
  • Patent number: 5682684
    Abstract: Household washer-dryers include a laundry drum having an incoming air inlet and a waste air outlet, a blower in an air conduit, a heating device upstream of the air inlet, temperature and moisture sensors, a memory for measured values and process sequence variants and an electronic program control unit. A method for controlling drying processes in such devices includes measuring a waste air temperature at the air outlet at a starting point of a drying process. At least part of the heating device is periodically turned on and off during at least one time segment at a beginning of the drying process.
    Type: Grant
    Filed: January 2, 1996
    Date of Patent: November 4, 1997
    Assignee: Bosch-Siemens Hausgeraete GmbH
    Inventors: Gunter Wentzlaff, Harald Moschutz, Ulrich Nehring
  • Patent number: 5649372
    Abstract: A drying cycle controller for a garment dryer. The drying cycle is controlled to have a decreasing temperature and humidity profile which avoids the removal of moisture at a rate which will cause shrinkage and wrinkling of the garment. The drying cycle temperature profile is controlled by continuously sensing the humidity within the drying chamber, and decreasing the drying temperature each time the relative humidity drops to one of a plurality of set points. Once the humidity has reached the final set point, the dryer enters a cool down cycle for a predetermined cool down time.
    Type: Grant
    Filed: March 14, 1996
    Date of Patent: July 22, 1997
    Assignee: American Dryer Corporation
    Inventor: William J. Souza
  • Patent number: 5625962
    Abstract: The position of the exhaust air flap of a through-flow dryer, for example, a screen drum dryer, is adjusted to determine the moisture content of the exhaust air. This is advantageously accomplished as a function of the desired drying temperature of the goods or their moisture content when the good leaves the dryer. Provision is made according to the invention to measure the temperature of the air after passing though the web, at least in the vicinity of the outlet of the dryer, to relate it to the temperature of the ambient air and thus to determine the temperature of the goods and hence their moisture content, since in the residual drying range, the moisture content of the goods is a function of the temperature of the goods. The exhaust air moisture content can then be regulated with this measured value.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: May 6, 1997
    Assignee: Fleissner GmbH & Co., KG
    Inventor: Gerold Fleissner