EP0887606B1 - Vorrichtung zum Trocknen - Google Patents
Vorrichtung zum Trocknen Download PDFInfo
- Publication number
- EP0887606B1 EP0887606B1 EP98110125A EP98110125A EP0887606B1 EP 0887606 B1 EP0887606 B1 EP 0887606B1 EP 98110125 A EP98110125 A EP 98110125A EP 98110125 A EP98110125 A EP 98110125A EP 0887606 B1 EP0887606 B1 EP 0887606B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- drying agent
- heat exchanger
- wood
- compressor
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
-
- 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
- F26B21/08—Humidity
- F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle
-
- 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
- F26B2210/16—Wood, e.g. lumber, timber
Definitions
- Such a device for drying wood with the features (a) to (g) is known from FR-A-1 391 485.
- This device does not work with one Pressure drop in the container.
- a control device controls this Switching the chillers and the external heat exchanger on and off exclusively from the point of view of compliance with a Temperature range from 8 to 30 ° C of the circulated as a desiccant Air.
- a device for drying wood has a container which can be placed under negative pressure (DE-A-35 43 248).
- This device also uses air as a desiccant in one closed circuit circulated. On part of the circulation route heat is added to the air on another part of the circulation path is flowed through from the air by passing water Cooling tubes condensed moisture. A chiller is not available.
- a device for drying paint is known, the a container that can be placed under vacuum and a refrigerator has, the condensation heat exchanger for supplying heat in the Gutfactrmaum is arranged (DE-C-310 352, embodiment 3 and claim 3).
- a vacuum pump continuously draws the vapors formed in the intake area a drain line.
- the evaporation heat exchanger is located in the exhaust line the chiller so that the vapors condense there.
- the condensation liquid is together with Evacuation air drawn off via the vacuum pump. The one from the Vapor-free evacuation air will not dry again Color used.
- DE-C-310 352 there are still more Desiccation devices described with closed Work the desiccant circuit, but not with a vacuum.
- the invention has for its object a device for Drying to specify the genus outlined at the beginning, which the Disadvantages of the open circuits explained does not have and has a significantly improved energy balance.
- this object is achieved in the device for Drying the type shown solved that at the Container a vacuum pump is connected.
- the device according to the invention enables faster drying. In comparison to the drying device according to DE-A-35 43 248 there is considerable energy saving.
- the invention provides a device for drying, where the circulating desiccant, in general Air flowing through the refrigerant circuit, which is too high Humidity is switched on.
- the humid air gets there first cooled in the evaporator, so that the assumed Moisture can be removed as water and then reheated in the condenser of the refrigerant circuit to increase the amount of saturated steam.
- the desiccant circuit and the more closed refrigerant circuit are coupled with each other, and this makes a significant improved efficiency of the entire system.
- the vacuum pump sets the boiling point of the water in the tank down.
- the heat exchanger Chiller in the area of a front end of the container are arranged. This allows a closed one in the container Space for receiving the goods to be dried whose vertical boundary walls have flow openings for the desiccant and with the opposite Walls of the container form a wind tunnel in which the blower is arranged. The damp area is thus on a room limited outside the too dry good.
- the compressor of the refrigerant circuit arranged inside the container is, there is the advantage that the waste heat of the compressor in Vacuum area is used and the construction of the device simplified.
- the evaporator over a sump for condensed from the desiccant Water arranged, which is connected to a collecting container can be.
- This collection container is outside of the container for arranged the inclusion of the goods to be dried.
- a submersible pump can be arranged in the drip pan with which the condensed water is sucked off at intervals can be.
- the one located outside the container Collection container is not required, so this solution is special is frost-proof.
- a spray tube for moistening the material to be dried opens.
- This Spray tube is water in the beginning of the drying process Desiccant circuit sprayed to increase the humidity and gentle drying of the goods, especially wood, bring about.
- the invention is based on a Device for drying wet or damp wood 10 shown, which corresponds to the circuit diagram of Figure 6 a carriage 12 is stacked.
- the carriage 12 is for the Drying process on a track 14 in a closed Room 16 driven a cylindrical container 18, the in Figure 1 right end face then through a cover 20th is closed.
- On the cover 20 opposite The essentially cuboid space 16 is through at the end a vertical partition 22 from an area 24 of the container 18 completed. This area 24 serves inter alia. to record essential parts of a refrigeration machine 26 to be explained.
- the wind tunnel 32 consists of a Pressure channel 32a and in the direction of flow behind the space 16 a suction channel 32b, both through the rear area 24 are interconnected. This makes a closed one Wind tunnel 32 is formed, which encloses the space 16.
- Blower 34 arranged by a motor 36 with horizontal Axis is driven.
- a heater 38 is provided in the area 24, which in the illustrated embodiment of two electrical operated flat tube spiral radiators; Of course can also be used differently designed heaters 38 are, for example, hot water heat exchangers.
- a spray tube 40 In the flow direction behind the heater 38 opens into the container 18 a spray tube 40, via which at the beginning of Drying process water in the pressure area 32a of the wind tunnel 32 can be sprayed.
- the water supply is here controlled by a solenoid valve 42.
- the addition of water in the desiccant cycle is recommended at the beginning of the Process to digest the wood 10, i.e. around the pores of the Open the wood so that the moisture is extracted from the wood can be.
- a heat exchanger 44 is provided, which is above an adjustable limit of the air humidity automatically is switched to the humid air up to one as well selectable degree of moisture to cool down and condensation bring about.
- This heat exchanger 40 is as evaporator 46 of the closed refrigerant circuit 48 the refrigerator 26 is formed.
- the drip pan 52 is over an outwardly leading line 54 with a collecting container 56 connected (see also Figure 3), the outside of the container 18th stands.
- a vacuum pump 58 is connected to the container 18 3 via a water separator 60 with the collecting container 56 is connected. With the help of the vacuum pump 58 can End of the heating phase in the entire system - container 18 and Collection container 56 - a negative pressure can be generated, for example from 0.6 to 0.7 bar by lowering the boiling point to accelerate the evaporation of the water.
- the evaporator 46 After the evaporator 46, it now flows to the temperature t4 cooled air through a further heat exchanger 62, which according to 6 through the condenser 64 of the refrigerant circuit 48 is formed. Behind the condenser 64, the air is at one Temperature t1 of about 65 ° C and is heated by means of Blower 34 pressed by the heater 38, which with the Capacitor 64 forms the heater of the system.
- the evaporator 46 and the condenser form 64 the two heat exchangers of the refrigerant circuit 48
- the compressor 66 is mounted outside of the container 18.
- Figure 6 schematically shows this refrigerant circuit 48, the works as a heat pump and in that behind the compressor 66 some refrigerant compresses its heat in the condenser 64 emits to the air flowing through, causing this to the Temperature t1 is warmed up. Then the refrigerant relaxed in the throttle 68 so that it cools down again and in Evaporator 46 heat from that flowing in the direction of arrow B. Can absorb air, which cools it down to the temperature t4 and condenses.
- Figure 4 shows that the container 18 for controlling the Process by means of a control device 74 shown in Figure 1 Connections 76 for wood moisture sensors, a thermometer 78, a temperature sensor 80 and a pressure switch 82 with Manometer 84 has. Received via an air humidity sensor 88 the control device 74 control commands for switching on or off of the refrigeration cycle 48 depending on the particular Degree of humidity in the air.
- Figure 4 also shows that at the bottom of the Collection container 56 for the condensed water, an outlet 86 is appropriate.
- Figures 7 and 8 show a variant of the device that in particular consists in that the compressor 66 of the Refrigerant circuit 48 not outside of the container 18 is arranged, but in the area 24 of the container 18. So the advantage is achieved that the waste heat of the compressor 66th is used within the vacuum range, so that the Compressor 66 consists of the heating device of the system the capacitor 64 and the heater 38.
- FIG. 8 also shows that in this variant two blowers 34 are provided so that a larger volume of air per unit time can be circulated, reducing the efficiency of the device improved.
- FIG. 9 shows a further variant of the device shown, in which the collecting container 56 for the condensed There is no water. Instead, it is in the underneath the evaporator 46 arranged collecting tray 52 for the condensate 50 a submersible pump 90 used, which via a drain line 92 to the outside leads. The submersible pump 90 can be switched on at intervals to drain the water through the drain line 92. at In this embodiment of the invention, the vacuum pump 58 sucks Via line 54, the air directly from the area 24 of the Container 18 out. Due to the lack of an outside of the Container 18 arranged collecting container 56 is this solution particularly frost-proof because the drip pan 52 is warm Area.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Drying Of Solid Materials (AREA)
- Adjustment And Processing Of Grains (AREA)
Description
Claims (16)
- Vorrichtung zum Trocknen von nassem oder feuchtem Gut, insbesondere Holz, mittels eines umgewälzten Trockenmittels, insbesondere Luft, aufweisend:(a) einen verschließbaren Behälter (18), der einen Raum (16) zur Aufnahme des zu trocknenden Gutes (10) enthält;(b) einen Trockenmittelkreislauf (32);(c) eine Aufheizeinrichtung (38, 64), die strömungsmäßig vor dem Gutaufnahmeraum (16) angeordnet ist;(d) eine Kältemaschine (26) mit einem Verdichter (66), einem Kondensations-Wärmetauscher (64), einem Verdampfungs-Wärmetauscher (46) und einem geschlossenen Kältemittelkreislauf (48), der den Verdichter (66) und die zwei Wärmetauscher (46, 64) verbindet,(e) wobei der Verdampfungs-Wärmetauscher (46) strömungsmäßig hinter dem Gutaufnahmeraum (16) angeordnet und zum Auskondensieren von Feuchtigkeit aus dem Trockenmittel vorgesehen ist,(f) und wobei der Kondensations-Wärmetauscher (64) als Teil der Aufheizeinrichtung (38, 64) vorgesehen ist;(g) und aufweisend ein Gebläse (34) zum Umwälzen des Trockenmittels,
dadurch gekennzeichnet,(h) daß eine Vakuumpumpe (58) an den Behälter (18) angeschlossen ist. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß der Verdichter (66) innerhalb des Behälters (18) angeordnet ist. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß der Verdichter (6) außerhalb des Behälters (18) angeordnet ist. - Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Wärmetauscher (46, 64) der Kältemaschine (26) am Stirnende des Behälters (18) in einem Bereich (24) angeordnet sind, der zusammen mit einem Druckkanal (32a) und einem Sogkanal (32b) einen das zu trocknende Gut (10) einschließenden Windkanal (32) bildet.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Verdichter (66) in diesem Bereich (24) untergebracht ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Verdampfungs-wärmetauscher (46) über einer Auffangwanne (52) für aus dem Trockenmittel kondensiertes Wasser angeordnet ist.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Auffangwanne (52) mit einem Sammelbehälter (56) verbunden ist.
- Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß der Sammelbehälter (56) außerhalb des Behälters (18) für die Aufnahme des zu trocknenden Gutes (10) angeordnet ist.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß in der Auffangwanne (42) eine Tauchpumpe (90) zum Absaugen des kondensierten Wassers angeordnet ist, welche mit einer Ablaufleitung (92) verbunden ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß dem Kondensations-Wärmetauscher (64) in Strömungsrichtung des Trockenmittels eine Heizung (38) nachgeschaltet ist.
- Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß in Strömungsrichtung hinter der Heizung (38) in den Behälter (18) ein Sprührohr (40) zum Befeuchten des zu trocknenden Gutes (10) mündet.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß ein abgeschlossener Gut aufnahmeraum (16) vorgesehen ist, dessen vertikale Begrenzungswände (28) Durchströmöffnungen (30) für das Trockenmittel aufweisen und mit den gegenüberliegenden Wänden des Behälters (18) den Umwälzkanal (32) bilden.
- Vorrichtung nach einem der Ansprüche 1 bis 12,
dadurch gekennzeichnet, daß
die Kältemaschine (26) so ausgelegt ist, daß eine Temperatur des Trockenmittels von etwa 65°C nach dem Kondensations-Wärmetauscher (64) erreichbar ist. - Vorrichtung nach einem der Ansprüche 1 bis 13,
dadurch gekennzeichnet, daß
eine Regeleinrichtung (74) des Kältemittelkreislaufs (48) vorgesehen ist, an die ein Trockenmittel-Feuchtefühler (88) zum Zuleiten von Steuerbefehlen zum Zu- und Abschalten des Kältemittelkreislaufs (48) in Abhängigkeizt von dem jeweiligen Feuchtegrad des Trockenmittels angeschlossen ist. - Vorrichtung nach einem der Ansprüche 1 bis 14 zum Trocknen von Holz,
dadurch gekennzeichnet, daß
der Gutaufnahmeraum (16) eine derartige Größe hat, daß ein Holzstapel (10) einbringbar ist. - Vorrichtung nach Anspruch 15,
dadurch gekennzeichnet, daß
der Holzstapel (10) in den Gutaufnahmeraum (16) einfahrbar ist, wenn ein Deckel (20) an einer Stirnseite des Behälters (18) offen ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29711315U | 1997-06-28 | ||
DE29711315U DE29711315U1 (de) | 1997-06-28 | 1997-06-28 | Vorrichtung zum Trocknen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0887606A1 EP0887606A1 (de) | 1998-12-30 |
EP0887606B1 true EP0887606B1 (de) | 2002-03-06 |
EP0887606B2 EP0887606B2 (de) | 2008-01-30 |
Family
ID=8042309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98110125A Expired - Lifetime EP0887606B2 (de) | 1997-06-28 | 1998-06-03 | Vorrichtung zum Trocknen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0887606B2 (de) |
AT (1) | ATE214149T1 (de) |
DE (2) | DE29711315U1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110455068A (zh) * | 2019-08-28 | 2019-11-15 | 浙江大学 | 一种太阳能热泵除湿干燥*** |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SK2272001A3 (en) * | 2001-02-14 | 2002-12-03 | Kvetoslav Nikl | A device for dielectric-vacuum drying and colour tingeing of hard wood |
WO2002090852A1 (en) * | 2001-05-03 | 2002-11-14 | Dragutin Radovanovic | Device for fruit and vegetable drying in vacuum |
EP1748268A3 (de) * | 2005-07-29 | 2011-11-02 | Josef Walderdorff | Verfahren zum Trocknen von Gütern |
CN101487662B (zh) * | 2008-01-16 | 2012-01-04 | 凌建军 | 废热循环利用型高效节能烘干机 |
DE102009014853A1 (de) | 2009-03-30 | 2010-10-07 | Brunner, Reinhard, Dipl.-Ing. | Trocknungsvorrichtung |
DE102009014855A1 (de) | 2009-03-30 | 2010-10-07 | Brunner, Reinhard, Dipl.-Ing. | Vakuum-Trocknungsvorrichtung |
CN102019361B (zh) * | 2009-09-15 | 2012-12-05 | 蔡欲期 | 陶壳快速干燥方法,以及陶壳 |
CN104713313A (zh) * | 2015-03-18 | 2015-06-17 | 马玉光 | 一种常温干燥方法 |
CN109405446B (zh) * | 2018-11-06 | 2020-07-07 | 卡塞尔机械(浙江)有限公司 | 一种热泵干燥*** |
CN112325600B (zh) * | 2020-10-19 | 2021-07-23 | 华中科技大学 | 一种漆渣烘干***及控制方法 |
IT202200010103A1 (it) * | 2022-05-16 | 2023-11-16 | Nest Srl | Macchina per il trattamento di una massa organica e/o biodegradabile e metodo associato |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE310352C (de) * | 1915-12-08 | 1900-01-01 | ||
FR729045A (fr) * | 1931-12-12 | 1932-07-16 | Stand de séchage sous vide par la chaleur de condensation des vapeurs de séchage surpressées | |
DE2721256A1 (de) * | 1976-05-12 | 1977-11-24 | Ernesto Guglielmo Pagnozzi | Verfahren zum trocknen von holz und dafuer geeignete vorrichtung |
DE7730681U1 (de) * | 1977-10-04 | 1978-09-21 | Kernforschungsanlage Juelich Gmbh, 5170 Juelich | Vorrichtung zum trocknen von festgut |
DE2821259A1 (de) * | 1977-05-17 | 1978-11-23 | Vincenzo Pagnozzi | Vakuumtrockenofen |
DE2942651A1 (de) * | 1978-10-26 | 1980-05-08 | Ceaf Spa | Anlage zum trocknen von guetern, insbesondere holz, durch luftzirkulation |
DE7910260U1 (de) * | 1979-04-07 | 1984-11-29 | Kernforschungsanlage Jülich GmbH, 5170 Jülich | Vorrichtung zum abtrennen von verdampfbarer fluessigkeit aus ausgebreitetem stueck- oder schuettgut im vakuum |
DE3416056A1 (de) * | 1982-11-02 | 1985-10-31 | Shonetsugaku Kenkyusho Co. Ltd., Tokio/Tokyo | Trocknungsverfahren unter nutzung eines kaeltekreisprozesses und damit arbeitender trockner |
DE3536595A1 (de) * | 1984-10-15 | 1986-04-17 | Ernesto Guglielmo Campello Sul Clitunno Perugia Pagnozzi | Vakuumtrockner fuer schnitthoelzer |
DD239463A1 (de) * | 1983-05-31 | 1986-09-24 | Eckhold Karl Heinz | Waermepumpenanordnung fuer trockner von natuerlichen guetern |
DE9005827U1 (de) * | 1990-05-22 | 1990-08-23 | Kronseder, Josef, 8313 Vilsbiburg | Vorrichtung zum Trocknen von Holz |
WO1996001401A1 (en) * | 1994-07-06 | 1996-01-18 | High Speed Tech Oy Ltd. | A method and an apparatus in vacuum drying of a material, particularly timber or the like |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1421685A (en) * | 1919-01-20 | 1922-07-04 | Charles E Glessner | Vacuum container |
FR1391485A (fr) * | 1964-04-28 | 1965-03-05 | Procédé et installation de séchage de bois | |
IT1194684B (it) * | 1980-09-05 | 1988-09-22 | Ivo Coppa | Procedimento e impianto per l'essiccazione di prodotti e materiali quali il legno |
US4467532A (en) * | 1983-01-06 | 1984-08-28 | Drake Harry W | Apparatus and process for drying lumber |
ES8604347A1 (es) * | 1984-10-18 | 1986-02-01 | Aranguren Ind Sa | Maquina para el secado de la madera. |
FR2573186A1 (fr) * | 1984-11-12 | 1986-05-16 | Guerra Marc | Perfectionnement aux installations pour le sechage et le conditionnement des materiaux, notamment du bois, faisant intervenir alternativement une circulation d'air humide chaud puis une mise sous vide a froid |
DE3543248A1 (de) * | 1985-12-06 | 1987-06-11 | Josef Kronseder | Vorrichtung zum trocknen von holz |
CH667324A5 (de) * | 1986-05-13 | 1988-09-30 | Josef Wild & Co Maschinenfabri | Verfahren zum trocknen von holz und holz-trocknungseinrichtung. |
DE29611521U1 (de) * | 1996-07-02 | 1996-09-12 | Kronseder, Josef, 84137 Vilsbiburg | Vorrichtung zum Trocknen von Holz |
-
1997
- 1997-06-28 DE DE29711315U patent/DE29711315U1/de not_active Ceased
-
1998
- 1998-06-03 EP EP98110125A patent/EP0887606B2/de not_active Expired - Lifetime
- 1998-06-03 DE DE59803248T patent/DE59803248D1/de not_active Expired - Lifetime
- 1998-06-03 AT AT98110125T patent/ATE214149T1/de active
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE310352C (de) * | 1915-12-08 | 1900-01-01 | ||
FR729045A (fr) * | 1931-12-12 | 1932-07-16 | Stand de séchage sous vide par la chaleur de condensation des vapeurs de séchage surpressées | |
DE2721256A1 (de) * | 1976-05-12 | 1977-11-24 | Ernesto Guglielmo Pagnozzi | Verfahren zum trocknen von holz und dafuer geeignete vorrichtung |
DE2821259A1 (de) * | 1977-05-17 | 1978-11-23 | Vincenzo Pagnozzi | Vakuumtrockenofen |
DE7730681U1 (de) * | 1977-10-04 | 1978-09-21 | Kernforschungsanlage Juelich Gmbh, 5170 Juelich | Vorrichtung zum trocknen von festgut |
DE2942651A1 (de) * | 1978-10-26 | 1980-05-08 | Ceaf Spa | Anlage zum trocknen von guetern, insbesondere holz, durch luftzirkulation |
DE7910260U1 (de) * | 1979-04-07 | 1984-11-29 | Kernforschungsanlage Jülich GmbH, 5170 Jülich | Vorrichtung zum abtrennen von verdampfbarer fluessigkeit aus ausgebreitetem stueck- oder schuettgut im vakuum |
DE3416056A1 (de) * | 1982-11-02 | 1985-10-31 | Shonetsugaku Kenkyusho Co. Ltd., Tokio/Tokyo | Trocknungsverfahren unter nutzung eines kaeltekreisprozesses und damit arbeitender trockner |
DD239463A1 (de) * | 1983-05-31 | 1986-09-24 | Eckhold Karl Heinz | Waermepumpenanordnung fuer trockner von natuerlichen guetern |
DE3536595A1 (de) * | 1984-10-15 | 1986-04-17 | Ernesto Guglielmo Campello Sul Clitunno Perugia Pagnozzi | Vakuumtrockner fuer schnitthoelzer |
DE9005827U1 (de) * | 1990-05-22 | 1990-08-23 | Kronseder, Josef, 8313 Vilsbiburg | Vorrichtung zum Trocknen von Holz |
WO1996001401A1 (en) * | 1994-07-06 | 1996-01-18 | High Speed Tech Oy Ltd. | A method and an apparatus in vacuum drying of a material, particularly timber or the like |
Non-Patent Citations (1)
Title |
---|
Ernst Schmidt, Einführung in die technische Thermodynamik, 1958, Seiten 364 bis 372; * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110455068A (zh) * | 2019-08-28 | 2019-11-15 | 浙江大学 | 一种太阳能热泵除湿干燥*** |
CN110455068B (zh) * | 2019-08-28 | 2020-07-24 | 浙江大学 | 一种太阳能热泵除湿干燥*** |
Also Published As
Publication number | Publication date |
---|---|
DE29711315U1 (de) | 1997-08-28 |
ATE214149T1 (de) | 2002-03-15 |
EP0887606A1 (de) | 1998-12-30 |
DE59803248D1 (de) | 2002-04-11 |
EP0887606B2 (de) | 2008-01-30 |
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