EP0268774A3 - Continuous veneer dryer - Google Patents

Continuous veneer dryer Download PDF

Info

Publication number
EP0268774A3
EP0268774A3 EP87113900A EP87113900A EP0268774A3 EP 0268774 A3 EP0268774 A3 EP 0268774A3 EP 87113900 A EP87113900 A EP 87113900A EP 87113900 A EP87113900 A EP 87113900A EP 0268774 A3 EP0268774 A3 EP 0268774A3
Authority
EP
European Patent Office
Prior art keywords
dryer
zones
veneer
infrared detector
moisture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87113900A
Other languages
German (de)
Other versions
EP0268774A2 (en
EP0268774B1 (en
Inventor
Friedrich Roos
Peter Brod
Wilfried Moller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grenzebach BSH GmbH
Original Assignee
Babcock BSH AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Babcock BSH AG filed Critical Babcock BSH AG
Publication of EP0268774A2 publication Critical patent/EP0268774A2/en
Publication of EP0268774A3 publication Critical patent/EP0268774A3/en
Application granted granted Critical
Publication of EP0268774B1 publication Critical patent/EP0268774B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
    • F26B2210/14—Veneer, i.e. wood in thin sheets

Abstract

The invention relates to a continuous dryer for veneer. In addition to temperature sensors near the inlet and middle zones to determine heat demand and to control heat input in these zones, the dryer also has an infrared detector at the exit end to determine surface temperature and thus to determine residual moisture of the veneer. The signal from this infrared detector is processed to give a control signal for blowers in the drying zones near the exit. By this means, more precise and reliable control in final moisture is achieved. Variations in dryer load, initial moisture, wood density, and sheet thickness can be better tolerated.
EP87113900A 1986-11-22 1987-09-23 Continuous veneer dryer Expired - Lifetime EP0268774B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3639929 1986-11-22
DE19863639929 DE3639929A1 (en) 1986-11-22 1986-11-22 CONTINUOUS DRYER FOR VENEER BLADES

Publications (3)

Publication Number Publication Date
EP0268774A2 EP0268774A2 (en) 1988-06-01
EP0268774A3 true EP0268774A3 (en) 1989-05-24
EP0268774B1 EP0268774B1 (en) 1994-12-07

Family

ID=6314541

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87113900A Expired - Lifetime EP0268774B1 (en) 1986-11-22 1987-09-23 Continuous veneer dryer

Country Status (4)

Country Link
US (1) US4831747A (en)
EP (1) EP0268774B1 (en)
AT (1) ATE115276T1 (en)
DE (2) DE3639929A1 (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3741876A1 (en) * 1987-12-10 1989-06-22 Brueckner Trockentechnik Gmbh DEVICE FOR THE HEAT TREATMENT OF A WIDE-ENDED TEXTILE TRACK
US5123261A (en) * 1990-08-20 1992-06-23 Valley Grain Products, Inc. Cooling tunnel for food products
FR2674945B1 (en) * 1991-04-04 1993-07-23 Amdes DEVICE FOR CONTROLLING THE CONTINUOUS OPERATION OF A CONVECTIVE DRYER FOR DRYING TAPE PRODUCTS, PARTICULARLY TEXTILE TYPE.
US5603168A (en) * 1994-11-30 1997-02-18 The Coe Manufacturing Company Method and apparatus for controlling a dryer
DE19525545C1 (en) * 1995-07-13 1996-09-26 Babcock Textilmasch Compact drier for high throughput for textile web with heavy borders
US5651192A (en) * 1996-07-01 1997-07-29 White Consolidated Industries, Inc. Infrared temperature sensing for tumble drying control
US5915811A (en) * 1996-09-30 1999-06-29 The Board Of Trustees Of The University Of Arkansas Solar drying process and apparatus
US5992048A (en) * 1996-09-30 1999-11-30 The Board Of Trustees Of University Of Arkansas Solar drying process and apparatus
US5979524A (en) * 1997-06-27 1999-11-09 Danzer North America, Inc. Veneer slicer
FI974466A0 (en) * 1997-12-09 1997-12-09 Stellac Oy Foerfarande Foer reglering av gascirkulation
US20060086421A1 (en) * 1998-08-20 2006-04-27 Hartmut Gruender Drive system for veneer slicer
US6102090A (en) 1998-08-20 2000-08-15 Danzer North America, Inc. Flitch table mounting
DE19922165C2 (en) * 1999-05-12 2001-08-30 Babcock Bsh Gmbh Dryer for band or plate-shaped goods
DE10136966A1 (en) * 2001-07-28 2003-02-27 Brueckner Trockentechnik Gmbh Heat treatment of continuous textiles involves supplying only enough heat in each oven section to satisfy demand to achieve required final dryness
FI114452B (en) 2001-08-10 2004-10-29 Raute Oyj Procedure and plant for the production of uniformly moist veneers
BR0307362A (en) * 2002-02-04 2006-12-26 Danzer North America Inc backplate cutter, and method of converting a log block into backplate sheets
DE102007020837A1 (en) * 2007-05-02 2008-11-06 Hochschule Konstanz, Hochschule für Technik, Wirtschaft und Gestaltung Fluid material e.g. biological material, drying method, involves introducing dry air flow on surface of material for drying material, and measuring temperature at surface of material by thermometer
US20090061752A1 (en) 2007-08-28 2009-03-05 Current Energy Controls, Lp Autonomous Ventilation System
BRPI0917043B1 (en) 2008-12-03 2019-11-26 Oy Halton Group Ltd Method for controlling exhaust air flow in an exhaust ventilation system, and exhaust ventilation system
DE102009059822B4 (en) * 2009-12-21 2015-12-10 Grenzebach Bsh Gmbh Method and apparatus for drying plasterboard
SE537826C2 (en) * 2013-02-21 2015-10-27 Sp Sveriges Tekniska Forskningsinstitut Ab Method of drying hygroscopic material and apparatus for drying hygroscopic material.
US9879908B2 (en) 2013-10-17 2018-01-30 Triglia Technologies, Inc. System and method of removing moisture from fibrous or porous materials using microwave radiation and RF energy
US11384980B2 (en) 2013-10-17 2022-07-12 Joseph P. Triglia, Jr. System and method for reducing moisture in materials or plants using microwave radiation and RF energy
US11143454B2 (en) 2013-10-17 2021-10-12 Joseph P. Triglia, Jr. System and method of removing moisture from fibrous or porous materials using microwave radiation and RF energy
CN105180613A (en) * 2015-09-17 2015-12-23 成都中机盈科科技有限公司 Multi-box type lossless fabric drying system
CN106052349B (en) * 2016-06-07 2018-06-01 浙江冠峰食品机械有限公司 Full-automatic band dryer
CN107178983A (en) * 2017-07-15 2017-09-19 合肥杰源机电科技有限公司 One kind is used for auto parts and components drying unit
US11166482B2 (en) * 2018-09-18 2021-11-09 Packline Technologies, Inc. Modular produce drying tunnel and methods of use
CN112432484A (en) * 2020-11-24 2021-03-02 苏州讯能光电科技有限公司 LED casing processing material quick drying device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3350789A (en) * 1966-11-23 1967-11-07 Crown Zellerbach Canada Ltd Method of determining the moisture content of thin porous materials
US3474544A (en) * 1967-07-07 1969-10-28 Coe Mfg Co The Veneer dryer with plural treating zones
DE3121348A1 (en) * 1981-05-29 1982-12-16 Babcock-BSH AG vormals Büttner-Schilde-Haas AG, 4150 Krefeld Continuous dryer for sliced veneers
WO1985003117A1 (en) * 1984-01-06 1985-07-18 Oy Wilh. Schauman Ab A method for the control of drying of veneer
DE2721965C2 (en) * 1977-05-14 1986-09-11 Babcock-BSH AG vormals Büttner-Schilde-Haas AG, 4150 Krefeld Process for monitoring and controlling the drying of veneer sheets in a continuous process

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3625812A (en) * 1968-12-18 1971-12-07 Beloit Corp Presize moisture control system for a papermaking machine
US3959723A (en) * 1974-09-13 1976-05-25 Wagner Delmer W Lumber moisture measurement apparatus which is less sensitive to lumber movement and spacing
US4183292A (en) * 1977-10-12 1980-01-15 Tree Top, Inc. Continuous flow system for equalizing the moisture content of moisture absorbing fruit products
US4170073A (en) * 1977-12-01 1979-10-09 Kay-Ray, Inc. Wide dynamic range multi-zone drying method and apparatus for controlling product moisture
DE3120917A1 (en) * 1981-05-26 1982-12-23 Babcock-BSH AG vormals Büttner-Schilde-Haas AG, 4150 Krefeld CONTINUOUS DRYER FOR KNIFE VENEER

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3350789A (en) * 1966-11-23 1967-11-07 Crown Zellerbach Canada Ltd Method of determining the moisture content of thin porous materials
US3474544A (en) * 1967-07-07 1969-10-28 Coe Mfg Co The Veneer dryer with plural treating zones
DE2721965C2 (en) * 1977-05-14 1986-09-11 Babcock-BSH AG vormals Büttner-Schilde-Haas AG, 4150 Krefeld Process for monitoring and controlling the drying of veneer sheets in a continuous process
DE3121348A1 (en) * 1981-05-29 1982-12-16 Babcock-BSH AG vormals Büttner-Schilde-Haas AG, 4150 Krefeld Continuous dryer for sliced veneers
WO1985003117A1 (en) * 1984-01-06 1985-07-18 Oy Wilh. Schauman Ab A method for the control of drying of veneer

Also Published As

Publication number Publication date
DE3639929A1 (en) 1988-06-01
ATE115276T1 (en) 1994-12-15
US4831747A (en) 1989-05-23
EP0268774A2 (en) 1988-06-01
EP0268774B1 (en) 1994-12-07
DE3750841D1 (en) 1995-01-19

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