WO2009014466A1 - Wood processing device - Google Patents
Wood processing device Download PDFInfo
- Publication number
- WO2009014466A1 WO2009014466A1 PCT/RU2007/000402 RU2007000402W WO2009014466A1 WO 2009014466 A1 WO2009014466 A1 WO 2009014466A1 RU 2007000402 W RU2007000402 W RU 2007000402W WO 2009014466 A1 WO2009014466 A1 WO 2009014466A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chamber
- coolant
- wood
- cavity
- circulation
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
-
- 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
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/022—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure with provisions for changing the drying gas flow pattern, e.g. by reversing gas flow, by moving the materials or objects through subsequent compartments, at least two of which have a different direction of gas flow
-
- 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
- F26B25/06—Chambers, containers, or receptacles
- F26B25/08—Parts thereof
- F26B25/12—Walls or sides; Doors
-
- 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
- the invention relates to a woodworking industry and can be used for heat and moisture treatment of wood, wood materials, as well as various wood products: boards, bars, parquet, blanks and products of various shapes, etc., and are particularly effective for drying and tinting as in the processing of solid wood species such as oak, beech ash, etc. and wood of low value species, such as aspen, pine, etc.
- a device for drying wood containing a drying chamber in which a stack of blanks, supply and exhaust ducts, heaters, a fan and a humidification device are placed (RU 2023963 F 26 V 3/04, 1994).
- the known device is intended for drying hardwood at a maximum coolant temperature (wet steam) of not more than 85 0 C. Therefore, the wood does not heat up above the temperature of its interaction with atmospheric oxygen, at which the wood ignites.
- a device for drying wood comprising a chamber in which nozzles for supplying hot air to a wood stack are installed (SU 94719, F 27 K 5/04, 1960).
- nozzles for supplying hot air to a wood stack are installed (SU 94719, F 27 K 5/04, 1960).
- one of its walls is made of heat-conducting material and is blocked from the outside by folding ceramic pillows.
- there is a non-uniform warming up of the stack wood along its length which is due to the uneven flow of hot air along the length of the stack, due to a decrease in pressure in the nozzles with increasing distance and location from the fan.
- a device for treating wood comprising a chamber having a zone for accommodating a stack of wood, heating elements and a circulation agent for the coolant in the chamber, including an input and an output (RU 2182293, F 26 V 9/06, 2002).
- a container is placed in which racks are made to accommodate workpieces or the container can be provided with gaskets located between the layers of wood forming the stack.
- gaskets located between the layers of wood forming the stack.
- holes are made in the floor and ceiling, the area of which depends on the area of the inlet and outlet openings of the medium for circulating the medium filling the chamber. This ensures a uniform flow rate of the medium filling the chamber through a stack of wood along its length.
- the presence of the walls does not completely equalize the flow rate of the medium filling the chamber during processing of the wood stack, and also increases the resistance of the medium filling the chamber when it circulates inside the chamber.
- the closest in technical essence and the achieved result to the present invention is a wood processing device comprising a chamber having a zone for accommodating a stack of wood, heating elements and a circulation agent for the coolant in the chamber, which is divided by at least one partition into two cavities with the possibility of flow of coolant from one cavity to another cavity through an area intended to accommodate a stack of wood, the inlet of the coolant circulating agent being hydraulically connected to one cavity and the exit to the other (RU 2235636, 27 K 5/00, 09/10/2004).
- the known device allows for wood processing with great efficiency and quality, in particular, it is possible to process wood, the thickness of which is more than 200 mm, the range of tree species whose wood is heat treated is expanded, the average residual moisture of treated wood is reduced, the equilibrium humidity is reduced, the uniformity of wood is increased structure, the uniformity of its density increases and the energy costs of wood processing are reduced.
- the problem to which the present invention is directed is the creation and development of a device for processing wood, providing a wood structure with improved, in in particular, more uniform characteristics.
- At least one of the aforementioned cavity along the longitudinal axis of the chamber is made tapering in the direction of the flow of coolant passing through the cavity connected to the outlet of the coolant circulation stimulator.
- a distinctive feature of the present invention is
- the wood in the chamber is stacked, and the wood layers in the stack are positioned with a gap relative to each other.
- At least one of the aforementioned cavity located along the longitudinal axis of the chamber was made tapering in the direction of the flow of coolant passing through the cavity connected to the outlet of the circulation agent of the coolant by performing the inner cavity of the chamber tapering in the said direction.
- At least one of the aforementioned cavity located along the longitudinal axis of the chamber is made tapering in the direction of the flow of coolant passing through the cavity connected to the outlet of the stimulator of circulation of the coolant by forming an expanding stack of wood in the said direction.
- the narrowing of the cavities along the longitudinal axis of the chamber in said direction is from 1.6% to 24.1%. It was experimentally established that with a magnitude of narrowing less
- the device It is advisable to provide the device with a source of water vapor, the output of which is connected to the cavity of the chamber, as well as a condensate drainage system. It is preferable to provide the camera with removable heat-insulating mats that are installed at least on part of the outer surface of the camera.
- the circulation agent may be installed inside the chamber or outside the chamber.
- the inlet and outlet of the coolant circulation stimulator are hydraulically connected to the respective cavities by means of a 2-position distributor configured to alternately connect the inlet and outlet to the chamber cavities.
- the device may contain at least one additional inducer of circulation of the coolant that can be installed inside the camera or outside the camera.
- FIG. l schematically shows a General view of the device for wood processing
- figure 2 shows a diagram of the device in plan
- figure 3 shows another variant of the scheme of the device in plan
- figure 4 shows a diagram of the device from the side of the doorway
- figure 5 shows another variant of the device circuit from the door the opening
- Fig.6 shows another variant of the device from the side of the doorway.
- the woodworking device 1 comprises an airtight chamber 2, a chamber having at least one doorway, which is closed by a door 3, which seals the chamber 2. An area is provided inside the chamber for accommodating the wood stack 4. Inside the chamber 2 are placed heating elements 5, which can be located inside the chamber 2 in any known manner. As the heating elements can be used any known device, for example thermo-heating elements.
- the device 1 also contains a motive 6 for circulation of the coolant in the chamber.
- the inducer 6 has an input 7 and an output 8, through which, respectively, the suction and discharge of the coolant.
- the chamber is divided by at least one partition 9 into two cavities 10 with the possibility of flow of the coolant from one cavity 10 to another cavity 10 through an area designed to accommodate a stack of wood 4.
- At least one cavity 10 along the longitudinal axis of the chamber 2 is made tapering in the direction of the coolant flow passing through the cavity 10 connected to the output of the coolant circulation inducer b.
- the inlet 8 of the coolant circulation inducer 6 is hydraulically connected to one cavity 10, and the outlet 8 is connected to another cavity 10. It is advisable that at least one of the aforementioned cavity 10 located along the longitudinal axis of the chamber tapers in the direction of flow of the coolant passing through cavity 10 connected to the output 8 of the coolant circulation inducer 6 by performing the inner cavity of the chamber 2 tapering in the aforementioned direction.
- At least one of the aforementioned cavity 10, located along the longitudinal axis of the chamber 2 is made tapering in the direction of the flow of coolant passing through the cavity 10, connected to the outlet 8 of the coolant circulator 6 by forming an expanding stack of wood 4 said direction (see FIG. 3).
- the device 1 is provided with a source of water vapor 11, the output of which through the valve 12 is connected to the cavity of the chamber 2.
- the device 1 is equipped with a condensate drainage system 13.
- the system 13 operates at almost all stages of processing, and is particularly loaded when exposed to wood with water vapor.
- the chamber 2 can be equipped with removable heat-insulating mats 14, installed at least on a part of the outer surface of the chamber 2.
- the circulation agent 6 is installed inside the chamber 2 and also outside the chamber 2.
- inlet 7 and outlet 8 of the coolant circulation inducer 6 are hydraulically connected to the respective cavities 10 by means of a 2-position distributor 15 configured to alternately connect the input 7 and exit 8 to the cavities 10 of the chamber 2.
- the device may contain,. at least one additional agent 16 of the circulation of the coolant.
- An additional inducer 16 of the coolant circulation can be installed both inside the chamber 2 and outside it.
- the valve 17 is designed to drain from the chamber 2 of the vapor-gas medium.
- the stack is expediently placed on a trolley 18, which can be moved, in particular, on rails 19.
- the device in accordance with the present invention operates as follows. A stack of wood is formed on the cart 18 or directly in the chamber 2 (see FIG. 5, FIG.
- the wood layers in the stack are laid at a distance of 5 mm to 20 mm from each other in height, for example by means of gaskets.
- the chamber 2 is closed with a door 3.
- Heat-insulating mats 14 are hung on the outer surface of the chamber 2, which reduce heat loss to the environment (in principle, the chamber walls can be initially made heat-insulating, which is not requires mats).
- the heating elements 5 are activated and the wood is preheated in the chamber 2 by heating the air in the chamber at a speed of 30 ⁇ 45 deg / h to a temperature of 130 ⁇ 165 0 C. When the wood is heated, the moisture contained in it begins to evaporate. For more efficient heating of the air in the chamber, the coolant is circulated
- the resulting vapor-gas medium is heated in the chamber at a speed of 4 ⁇ 8 deg / h to a temperature of 160 ⁇ 200 0 C, then they are repeatedly exposed to water by steam for 0.5 ⁇
- the coolant passes through the layers of wood stack 4 with a uniform flow rate along the length of the stack 4, providing a more identical treatment of all layers of wood stack 4.
- the heat-insulating mats 14 are removed from the outer surface of the chamber 2, if necessary, thereby increasing the cooling rate of the wood stack by increasing the heat removal from the chamber 2 to the environment. After the cooling of the wood in the chamber below 60 0 C is completed, the door 3 is opened and the stack 4 is taken out of the chamber 2, where the final cooling of the wood takes place.
- All stages of the heat treatment are carried out during the circulation of the gas-vapor medium in the chamber, which is carried out by the motivators of the circulation.
- this circulation inducer it is possible to reverse the coolant by means of a 2-position distributor 15.
- the presence of at least one additional circulation inducer 16 also allows the wood to be processed in reverse mode coolant circulation.
- the input of the main driver 6 of the coolant circulation is connected to one of the cavities 10, and the input of the additional driver 16 to the other cavity 10. Accordingly, the outputs of the drivers 6 and 16 are connected (Fig. 6). Studies have shown that the residual moisture of the wood in all processing intervals does not exceed 6.2%.
- heat-treated wood due to the beautiful appearance and unique properties of heat-treated wood, it can be used in many areas, including for interior decoration of rooms, for example, baths and saunas, for external cladding of buildings, flooring, furniture, musical instruments, etc.
- the device in accordance with the present invention is industrially applicable for the heat-moisture treatment of wood, wood materials, as well as various wood products: boards, bars, parquet, blanks and products of various shapes, etc.
- the device in accordance with the present invention does not require the creation of special equipment and accessories .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/RU2007/000402 WO2009014466A1 (en) | 2007-07-20 | 2007-07-20 | Wood processing device |
EP07866913A EP2182313A1 (en) | 2007-07-20 | 2007-07-20 | Wood processing device |
EA201000230A EA201000230A1 (en) | 2007-07-20 | 2007-07-20 | WOOD TREATMENT DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/RU2007/000402 WO2009014466A1 (en) | 2007-07-20 | 2007-07-20 | Wood processing device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009014466A1 true WO2009014466A1 (en) | 2009-01-29 |
Family
ID=40281578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/RU2007/000402 WO2009014466A1 (en) | 2007-07-20 | 2007-07-20 | Wood processing device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2182313A1 (en) |
EA (1) | EA201000230A1 (en) |
WO (1) | WO2009014466A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111267196B (en) * | 2020-04-09 | 2021-02-19 | 广东生博有害生物防治科技发展有限公司 | High-efficient protection against insects equipment of cooking of bamboo timber |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU94719A1 (en) * | 1950-10-06 | 1951-11-30 | И.В. Кречетов | Method of chamber thermal diffusion drying of piece lumber |
DE3206348A1 (en) * | 1981-11-03 | 1983-05-11 | Josef 2164 Neuruppersdorf Leisser | Drying chamber for wood |
SU1437652A1 (en) * | 1987-02-20 | 1988-11-15 | Архангельский лесотехнический институт им.В.В.Куйбышева | Aerodynamic drying chamber for lumber |
RU2105254C1 (en) * | 1996-02-28 | 1998-02-20 | Товарищество с ограниченной ответственностью "ИНСИКО" | Method and device for drying stacked wood |
RU2192590C2 (en) * | 2001-01-10 | 2002-11-10 | Ковальский Вадим Адольфович | Lumber drying unit |
-
2007
- 2007-07-20 EP EP07866913A patent/EP2182313A1/en not_active Withdrawn
- 2007-07-20 WO PCT/RU2007/000402 patent/WO2009014466A1/en active Application Filing
- 2007-07-20 EA EA201000230A patent/EA201000230A1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU94719A1 (en) * | 1950-10-06 | 1951-11-30 | И.В. Кречетов | Method of chamber thermal diffusion drying of piece lumber |
DE3206348A1 (en) * | 1981-11-03 | 1983-05-11 | Josef 2164 Neuruppersdorf Leisser | Drying chamber for wood |
SU1437652A1 (en) * | 1987-02-20 | 1988-11-15 | Архангельский лесотехнический институт им.В.В.Куйбышева | Aerodynamic drying chamber for lumber |
RU2105254C1 (en) * | 1996-02-28 | 1998-02-20 | Товарищество с ограниченной ответственностью "ИНСИКО" | Method and device for drying stacked wood |
RU2192590C2 (en) * | 2001-01-10 | 2002-11-10 | Ковальский Вадим Адольфович | Lumber drying unit |
Also Published As
Publication number | Publication date |
---|---|
EA201000230A1 (en) | 2010-06-30 |
EP2182313A1 (en) | 2010-05-05 |
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