CN105818234A - Multi-cavity multi-port quickly-replacing wood microwave pretreatment device and application method thereof - Google Patents
Multi-cavity multi-port quickly-replacing wood microwave pretreatment device and application method thereof Download PDFInfo
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- CN105818234A CN105818234A CN201610148807.9A CN201610148807A CN105818234A CN 105818234 A CN105818234 A CN 105818234A CN 201610148807 A CN201610148807 A CN 201610148807A CN 105818234 A CN105818234 A CN 105818234A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/003—Treating of wood not provided for in groups B27K1/00, B27K3/00 by using electromagnetic radiation or mechanical waves
- B27K5/0055—Radio-waves, e.g. microwaves
Abstract
The invention discloses a multi-cavity multi-port quickly-replacing wood microwave pretreatment device and an application method thereof. The device comprises a universal working table, temperature detection modules and a plurality of microwave source and resonant cavity modules. The microwave source and resonant cavity modules comprise resonant cavity shells and microwave sources arranged on the peripheral sides of the resonant cavity shells. The resonant cavity shells are internally provided with resonant cavities for containing treated wood. The microwave sources communicate with the corresponding resonant cavities through feed-in waveguides. The temperature detection modules are mounted on the corresponding resonant cavity shells and extend into the corresponding resonant cavities. The resonant cavity shells are mounted on the universal working table. The method comprises the following steps of S1 manufacturing of test pieces, S2 drilling and weighing of the test pieces, S3 mounting of the microwave source and resonant cavity modules, S4 mounting of the test pieces, S5 microwave pretreatment and S6 completion of treatment. The multi-cavity multi-port quickly-replacing wood microwave pretreatment device has the advantages of being simple and reliable in structure, convenient to operate and capable of achieving the controllability and adjustability of pretreatment parameters and wood physical property parameters.
Description
Technical field
The invention mainly relates to timber microwave pretreatment technical field, particularly relate to a kind of multi-opening multi-cavity quick-change type timber microwave pretreatment device and using method thereof.
Background technology
Microwave heating, owing to having the features such as instantaneity, globality, selectivity and high efficiency, has been widely used in the field such as dry materials and heating, chemical reaction and synthesis, biological sterilization and parasite killing.In recent years, high-intensity microwave pretreatment occurs in timber industry as a kind of new Wood Property Improvement, its ultimate principle is to utilize high-intensity microwave that unseasoned lumber is carried out instantaneous process, in making timber, moisture obtains abundant energy at short notice, moisture is made to be become gaseous state by liquid, thus produce phase transformation and air heat pressure effect, effectively destroy wood internal structure, microcosmic or macroscopic cracking is formed at wood internal, thus form new fluid passage, improve the fluid migration ability of wood internal, for being dried of timber later stage, Immersion treatment, extremely advantageous precondition is created in even new material preparation.The Preliminary Results of Univ Melbourne Australia shows, uses high-intensity microwave that timber carries out pretreatment and timber measurement can be made to increase more than 10%, and preservative infiltration capacity increases by 10～14 times, and dry rate improves 5～10 times, the significant improvement of dry mass；Timber is even disassembled and reconstruction processing by the research worker of this university also by this technology, has manufactured experimently out and has had high osmosis, low-density novel timber and have the novel wooden composite of high intensity, high surface hardness.
But further investigation revealed that both at home and abroad, timber is after high intensity microwave pretreatment, its internal microcosmic and macroporosity distribution are the most uneven, and the preparation impregnating modification and high-performance new material to the later stage of timber brings the biggest difficulty, directly results in this technology and cannot realize commercial application.The homogenization problem that timber microwave modification to be solved processes, in addition to optimizing pretreating process, most crucial problem is to develop suitable microwave pretreatment equipment.Therefore, how to develop parameter the most adjustable microwave modification pretreatment unit, for verifying the various microwave pretreatment condition affecting laws to Wooden modifying effect, finally develop scientific and rational microwave pretreatment equipment and have important practical significance.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, it is provided that a kind of simple and reliable for structure, easy to operate, the multi-opening multi-cavity quick-change type timber microwave pretreatment device to pretreatment parameter and the controlled and adjustability of timber physical parameter and using method thereof can be realized.
For solve above-mentioned technical problem, the present invention by the following technical solutions:
A kind of multi-opening multi-cavity quick-change type timber microwave pretreatment device, including universal head, temperature detecting module and multiple microwave source and resonant tank module, described microwave source and resonant tank module include resonator cavity housing and are located at the microwave source of resonator cavity housing week side, described resonator cavity enclosure interior is provided with the resonator cavity for placing processed timber, described microwave source is connected with resonator cavity by feed-in waveguide, described temperature detecting module is installed on resonator cavity housing and extends in resonator cavity, and described resonator cavity housing is installed on universal head.
Further improvement as technique scheme:
Described microwave source includes being connected with each other magnetron and refrigerating module, feed-in waveguide is rectangular waveguide, one end of described rectangular waveguide is connected with refrigerating module, the other end connects with resonator cavity, and the link position of described rectangular waveguide and resonator cavity housing is positioned at the geometric center position of the side of resonator cavity housing.
Described refrigerating module includes that water-filled radiator, water inlet and discharge outlet, described water inlet and discharge outlet are arranged on water-filled radiator.
Described temperature detecting module includes for the infra-red ray detection device to wood surface thermometric with for the optical fibers to wood internal thermometric, described infra-red ray detection device is installed on resonator cavity housing and extends in resonator cavity, and described optical fibers implants wood internal.
Described resonator cavity case top is equiped with the crown cap for hiding resonator cavity, and described crown cap offers the through hole walked for moisture discharge and optical fibers being evenly arranged.
A diameter of 2mm of described through hole, the spacing between each through hole is 20mm.
The plurality of microwave source and resonant tank module include the cylindrical three mouthfuls of resonator cavitys of single microwave source square single port resonator cavity, double microwave source square twoport resonator cavity, three microwave sources and the cylindrical four mouthfuls of resonator cavitys of four microwave sources, the resonator cavity housing week side of described single microwave source square single port resonator cavity is provided with a microwave source, and the resonator cavity of described single microwave source square single port resonator cavity is rectangular structure；The resonator cavity housing week side of described pair of microwave source square twoport resonator cavity is provided with two microwave sources, and the resonator cavity of described pair of microwave source square twoport resonator cavity is rectangular structure；The resonator cavity housing week side of the cylindrical three mouthfuls of resonator cavitys of described three microwave sources is provided with three microwave sources being evenly arranged, and the resonator cavity of the cylindrical three mouthfuls of resonator cavitys of described three microwave sources is cylindrical structure；The resonator cavity housing week side of the cylindrical four mouthfuls of resonator cavitys of described four microwave sources is provided with four microwave sources being evenly arranged, and the resonator cavity of the cylindrical four mouthfuls of resonator cavitys of described four microwave sources is cylindrical structure.
The length and width of the resonator cavity in described single microwave source square single port resonator cavity, double microwave source square twoport resonator cavity between 120～300mm, the degree of depth is between 80～150mm；The diameter of the resonator cavity of the described three cylindrical three mouthfuls of resonator cavitys of microwave sources and the cylindrical four mouthfuls of resonator cavitys of four microwave sources between 120～300mm, the degree of depth is between 80～500mm.
Described universal head includes frame, described resonator cavity housing is installed in frame top, described frame is provided with power module, temperature control display module, output power module and microwave source electric current display module, described power module, output power module and microwave source electric current display module are all coupled by wire with microwave source, described temperature control display module is coupled by wire with temperature detecting module, and described resonator cavity housing is installed in frame top.
The using method of a kind of multi-opening multi-cavity quick-change type timber microwave pretreatment device, comprises the following steps:
S1: make test specimen: the timber that moisture content is higher than 10% is processed into square and cylinder specimen, the thickness of square lumber is between 10-120mm, and length and width is between 100-290mm, and the height of cylindrical timber is between 70-490mm, and diameter is between 10-290mm；
The boring of S2: test specimen with weigh: on square and cylinder specimen, process the individual a diameter of 1mm of 4-8, the preformed hole of degree of depth 10-30mm, weigh in the balance and take each timber test specimen initial mass record；
S3: microwave source and resonant tank module are installed: microwave source and the resonant tank module of selection are fixed on universal head, infra-red ray detection device is arranged on resonator cavity housing, connect the power lead of microwave source, circulating water pipe, connect the temperature sensor line of temperature detecting module；
S4: test specimen is installed: be placed in resonator cavity by the timber test specimen of selection, then by optical fibers through the through hole on crown cap, is inserted in the preformed hole in timber test specimen by optical fibers temperature probe, is coupled with universal head by fibre-optic thermometric end；
S5: microwave pretreatment: start universal head, make magnetron, refrigerating module, infra-red ray detection device and optical fibers run and timber test specimen is carried out microwave pretreatment, observing timber surface of test piece and the temperature variations of inside, the temperature of wood internal is less than 220 DEG C；
S6: terminate: close down universal head, takes out the timber test specimen after microwave treatment and weighs it and record.
Compared with prior art, it is an advantage of the current invention that:
The multi-opening multi-cavity quick-change type timber microwave pretreatment device of the present invention, it is simple and reliable for structure, in this structure, temperature detecting module and multiple fast changeable microwave source is controlled by universal head, achieve the controlled of pretreatment parameter and adjustability, and multiple resonator cavity housing fast changeable is arranged on universal head, ensure that the transmutability of resonator cavity shape, can adapt to the timber of difformity size, achieve the transmutability of timber physical parameter, because Wooden modifying effect is had a direct impact by the change of pretreatment parameter and timber physical parameter, therefore by pretreatment parameter and the control of timber physical parameter and adjusting being obtained the microwave pretreatment parameter of optimization.The using method of the multi-opening multi-cavity quick-change type timber microwave pretreatment device of the present invention, utilize universal head and removable microwave source to change microwave pretreatment parameter and carry out repeatedly microwave pretreatment, simultaneously, the physical parameter that removable resonator cavity must also be utilized to change test specimen carries out repeatedly microwave pretreatment, data analysis is carried out according to microwave pretreatment structure repeatedly, sum up microwave radiation, microwave irradiation time, microwave feed-in mode, resonator cavity shape, physical parameter (moisture content, size, shape) etc. factor to Wood temperature be distributed, moisture content, modification effect and the affecting laws of microwave energy utilization ratio, it is simple to operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of multi-opening multi-cavity quick-change type timber microwave pretreatment device of the present invention.
Fig. 2 is the main TV structure schematic diagram of single microwave source square single port resonator cavity in multi-opening multi-cavity quick-change type timber microwave pretreatment device of the present invention.
Fig. 3 is the plan structure schematic diagram of single microwave source square single port resonator cavity in multi-opening multi-cavity quick-change type timber microwave pretreatment device of the present invention.
Fig. 4 is the structural representation of the crown cap of single microwave source square single port resonator cavity in multi-opening multi-cavity quick-change type timber microwave pretreatment device of the present invention.
Fig. 5 is the structural representation of universal head in multi-opening multi-cavity quick-change type timber microwave pretreatment device of the present invention.
Fig. 6 is the structural representation of double microwave source square twoport resonator cavitys in multi-opening multi-cavity quick-change type timber microwave pretreatment device of the present invention.
Fig. 7 is the structural representation of the cylindrical three mouthfuls of resonator cavitys of three microwave sources in multi-opening multi-cavity quick-change type timber microwave pretreatment device of the present invention.
Fig. 8 is the structural representation of the crown cap of the cylindrical three mouthfuls of resonator cavitys of three microwave sources in multi-opening multi-cavity quick-change type timber microwave pretreatment device of the present invention.
Fig. 9 is the structural representation of the cylindrical four mouthfuls of resonator cavitys of four microwave sources in multi-opening multi-cavity quick-change type timber microwave pretreatment device of the present invention.
Figure 10 is the flow chart of the using method of multi-opening multi-cavity quick-change type timber microwave pretreatment device of the present invention.
In figure, each label represents:
1, universal head；11, frame；12, power module；13, temperature control display module；14, output power module；15, microwave source electric current display module；2, temperature detecting module；21, infra-red ray detection device；3, resonator cavity housing；31, resonator cavity；4, microwave source；41, magnetron；42, refrigerating module；421, water-filled radiator；422, water inlet；423, discharge outlet；5, feed-in waveguide；6, crown cap；61, through hole.
Detailed description of the invention
Below with reference to Figure of description and specific embodiment, the present invention is described in further details.
Fig. 1 to Fig. 9 shows a kind of embodiment of multi-opening multi-cavity quick-change type timber microwave pretreatment device of the present invention, this microwave pretreatment device includes universal head 1, temperature detecting module 2 and multiple microwave source and resonant tank module, microwave source and resonant tank module include resonator cavity housing 3 and are located at the microwave source 4 of 3 weeks sides of resonator cavity housing, resonator cavity housing 3 is internal is provided with the resonator cavity 31 for placing processed timber, microwave source 4 is connected with resonator cavity 31 by feed-in waveguide 5, temperature detecting module 2 is installed on resonator cavity housing 3 and extends in resonator cavity 31, resonator cavity housing 3 is installed on universal head 1.It is simple and reliable for structure, in this structure, temperature detecting module 2 and multiple fast changeable microwave source 4 is controlled by universal head 1, achieve the controlled of pretreatment parameter and adjustability, and multiple resonator cavity housing 3 fast changeable is arranged on universal head 1, ensure that the transmutability of resonator cavity 31 shape, can adapt to the timber of difformity size, achieve the transmutability of timber physical parameter, because Wooden modifying effect is had a direct impact by the change of pretreatment parameter and timber physical parameter, therefore by pretreatment parameter and the control of timber physical parameter and adjusting being obtained the microwave pretreatment parameter of optimization.
In the present embodiment, microwave source 4 includes being connected with each other magnetron 41 and refrigerating module 42, feed-in waveguide 5 is rectangular waveguide, one end of rectangular waveguide is connected with refrigerating module 42, the other end connects with resonator cavity 31, and the link position of rectangular waveguide and resonator cavity housing 3 is positioned at the geometric center position of the side of resonator cavity housing 3.In this structure, magnetron 41 exports for microwave, and refrigerating module 42 is for reducing the temperature of magnetron 41 in microwave source 4 work process, it is ensured that equipment properly functioning.
In the present embodiment, refrigerating module 42 includes that water-filled radiator 421, water inlet 422 and discharge outlet 423, water inlet 422 and discharge outlet 423 are arranged on water-filled radiator 421.In this structure, cool down with water-filled radiator 421, water-filled radiator 421 is positioned at the lower end of magnetron 41, the water inlet 422 of water-filled radiator 421 is connected with running water pipe by transparent water pipe, discharge outlet 423 then directly connects with tank, and the heat taking away magnetron 41 by entering draining reaches the effect of cooling.
In the present embodiment, temperature detecting module 2 includes for the infra-red ray detection device 21 to wood surface thermometric with for the optical fibers to wood internal thermometric, infra-red ray detection device 21 is installed on resonator cavity housing 3 and extends in resonator cavity 31, and optical fibers implants wood internal.In this structure, by infra-red ray detection device 21 and fibre-optic with the use of, wood surface and inside can be carried out monitoring temperature, it is ensured that temperature controlled accuracy simultaneously, namely improve to pretreatment parameter control accuracy.
In the present embodiment, resonator cavity housing 3 top is equiped with the crown cap 6 for hiding resonator cavity 31, and crown cap 6 offers the through hole 61 walked for moisture discharge and optical fibers being evenly arranged.Resonator cavity housing 3 top is provided with demountable stainless steel metal lid 6, crown cap 6 is connected with resonator cavity housing 3 by bolt, diameter 2mm is distributed on crown cap 6, the through hole 61 of spacing 20mm, in microwave processing process, get rid of the steam being evaporated, fibre-optic when being the most also to measure wood internal temperature walk passage.
In the present embodiment, multiple microwave sources and resonant tank module include the cylindrical three mouthfuls of resonator cavitys of single microwave source square single port resonator cavity, double microwave source square twoport resonator cavity, three microwave sources and the cylindrical four mouthfuls of resonator cavitys of four microwave sources, 3 weeks sides of resonator cavity housing of single microwave source square single port resonator cavity are provided with a microwave source 4, and the resonator cavity 31 of single microwave source square single port resonator cavity is rectangular structure；3 weeks sides of resonator cavity housing of double microwave source square twoport resonator cavitys are provided with two microwave sources 4, and the resonator cavity 31 of double microwave source square twoport resonator cavitys is rectangular structure；3 weeks sides of resonator cavity housing of the cylindrical three mouthfuls of resonator cavitys of three microwave sources are provided with three microwave sources 4 being evenly arranged, and the resonator cavity 31 of the cylindrical three mouthfuls of resonator cavitys of three microwave sources is cylindrical structure；3 weeks sides of resonator cavity housing of the cylindrical four mouthfuls of resonator cavitys of four microwave sources are provided with four microwave sources 4 being evenly arranged, and the resonator cavity 31 of the cylindrical four mouthfuls of resonator cavitys of four microwave sources is cylindrical structure.In this structure, it is provided with four microwave sources and resonant tank module, each microwave source and resonant tank module fast changeable are also arranged on universal head 1, to mate the timber of difformity size, i.e. achieve the controlled of pretreatment parameter and adjustability and the transmutability of timber physical parameter.
In the present embodiment, in single microwave source square single port resonator cavity, a rectangular waveguide opening is positioned at the geometric center position of square 31 1 sides of resonator cavity；In double microwave source square twoport resonator cavitys, two rectangular waveguide openings are positioned at the geometric center position of square 31 two opposite faces of resonator cavity；In the cylindrical three mouthfuls of resonator cavitys of three microwave sources, three rectangular waveguide openings are positioned at the geometric center position of cylindrical cavity 31 side, and are uniformly distributed, and the angle of three rectangular waveguide mouth centrages is 120 °；In the cylindrical four mouthfuls of resonator cavitys of four microwave sources, four rectangular waveguide openings are positioned at the geometric center position of cylindrical cavity 31 side, and are uniformly distributed, and the angle of four rectangular waveguide mouth centrages is 90 °.For single microwave source square single port resonator cavity and double microwave source square twoport resonator cavity, single detachable infra-red ray detection device 21 is arranged in the geometric center position of face, rectangular waveguide opening place adjacent side；Three mouthful resonator cavitys cylindrical for three microwave sources, three detachable infra-red ray detection devices 21 are evenly arranged in the geometric center position of side between each two rectangular waveguide opening；Four mouthful resonator cavitys cylindrical for four microwave sources, four detachable infra-red ray detection devices 21 are evenly arranged in the geometric center position of side between each two rectangular waveguide opening.In timber, temperature measures the optical fibers using 4-8 passage, it is possible to achieve the continuous kinetic measurement of wood internal diverse location 4-8 some temperature value.For single microwave source square single port resonator cavity, the water inlet 422 of water-filled radiator 421 is connected with running water pipe by transparent water pipe, and discharge outlet 423 then directly connects with tank；For double microwave source square twoport resonator cavitys, the cylindrical three mouthfuls of resonator cavitys of three microwave sources and the cylindrical four mouthfuls of resonator cavitys of four microwave sources, first the form being serially connected is taked to be attached water inlet 422 and the discharge outlet 423 of water-filled radiator 421, being connected with running water pipe by transparent water pipe by water inlet 422, discharge outlet 423 directly connects with tank again.
In the present embodiment, the length and width of the resonator cavity 31 in single microwave source square single port resonator cavity, double microwave source square twoport resonator cavity between 120～300mm, the degree of depth is between 80～150mm；The diameter of the resonator cavity 31 of the three cylindrical three mouthfuls of resonator cavitys of microwave sources and the cylindrical four mouthfuls of resonator cavitys of four microwave sources between 120～300mm, the degree of depth is between 80～500mm.In this structure, coordinate the size of resonator cavity 31, the thickness of square lumber is between 10-120mm, length and width is between 100-290mm, the height of cylindrical timber is between 70-490mm, diameter is between 10-290mm, and i.e. in this size range, the timber of change can process in the microwave pretreatment device of the present invention, it is ensured that the transmutability of its physical parameter.
In the present embodiment, universal head 1 includes frame 11, resonator cavity housing 3 is installed in frame 11 top, frame 11 is provided with power module 12, temperature control display module 13, output power module 14 and microwave source electric current display module 15, power module 12, output power module 14 and microwave source electric current display module 15 all couple with microwave source 4, temperature control display module 13 couples with temperature detecting module 2, and described resonator cavity housing 3 is installed in frame 11 top, and frame 11 top is provided with installing hole.In this structure, temperature control display module 13 temperature controllable, output power module 14 can control output, and microwave source electric current can be monitored by microwave source electric current display module 15 in real time, cooperating by these modules, can realize the controlled and adjustable of the pretreatment parameter to pretreatment unit.
Fig. 1 to Figure 10 shows the embodiment of the using method of multi-opening multi-cavity quick-change type timber microwave pretreatment device of the present invention, comprises the following steps:
S1: make test specimen: the timber that moisture content is higher than 10% is processed into square and cylinder specimen, the thickness of square lumber is between 10-120mm, and length and width is between 100-290mm, and the height of cylindrical timber is between 70-490mm, and diameter is between 10-290mm；
The boring of S2: test specimen with weigh: on square and cylinder specimen, process the individual a diameter of 1mm of 4-8, the preformed hole of degree of depth 10-30mm, weigh in the balance and take each timber test specimen initial mass record；
S3: microwave source and resonant tank module are installed: microwave source and the resonant tank module of selection are fixed on universal head 1, infra-red ray detection device 21 is arranged on resonator cavity housing 3, connect the power lead of microwave source 4, circulating water pipe, connect the temperature sensor line of temperature detecting module 2.；
S4: test specimen is installed: be placed in resonator cavity 31 by the timber test specimen of selection, then by optical fibers through the through hole 61 on crown cap 6, optical fibers temperature probe is inserted in the preformed hole in timber test specimen, fibre-optic thermometric end is coupled with universal head 1；
S5: microwave pretreatment: start universal head 1, make magnetron 41, refrigerating module 42, infra-red ray detection device 21 and optical fibers run and timber test specimen is carried out microwave pretreatment, observing timber surface of test piece and the temperature variations of inside, the temperature of wood internal is less than 220 DEG C；
S6: terminate: close down universal head 1, takes out the timber test specimen after microwave treatment and weighs it and record.
In the method, available universal head 1 and removable microwave source 4 change microwave pretreatment parameter and carry out repeatedly microwave pretreatment, simultaneously, the physical parameter that removable resonator cavity 31 must also be utilized to change test specimen carries out repeatedly microwave pretreatment, data analysis is carried out according to microwave pretreatment structure repeatedly, sum up microwave radiation, microwave irradiation time, microwave feed-in mode, resonator cavity shape, physical parameter (moisture content, size, shape) etc. factor to Wood temperature be distributed, moisture content, modification effect and the affecting laws of microwave energy utilization ratio, it is simple to operation.
Although the present invention discloses as above with preferred embodiment, but is not limited to the present invention.Any those of ordinary skill in the art, in the case of without departing from technical solution of the present invention scope, technical solution of the present invention is made many possible variations and modification by the technology contents that all may utilize the disclosure above, or is revised as the Equivalent embodiments of equivalent variations.Therefore, every content without departing from technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should fall in the range of technical solution of the present invention is protected.
Claims (10)
1. a multi-opening multi-cavity quick-change type timber microwave pretreatment device, it is characterized in that: include universal head (1), temperature detecting module (2) and multiple microwave source and resonant tank module, described microwave source and resonant tank module include resonator cavity housing (3) and are located at the microwave source (4) of resonator cavity housing (3) week side, described resonator cavity housing (3) is internal is provided with the resonator cavity (31) for placing processed timber, described microwave source (4) is connected with resonator cavity (31) by feed-in waveguide (5), described temperature detecting module (2) is installed in resonator cavity housing (3) and above and extends in resonator cavity (31), described resonator cavity housing (3) is installed on universal head (1).
Multi-opening multi-cavity quick-change type timber microwave pretreatment device the most according to claim 1, it is characterized in that: described microwave source (4) includes being connected with each other magnetron (41) and refrigerating module (42), feed-in waveguide (5) is rectangular waveguide, one end of described rectangular waveguide is connected with refrigerating module (42), the other end connects with resonator cavity (31), and the link position of described rectangular waveguide and resonator cavity housing (3) is positioned at the geometric center position of the side of resonator cavity housing (3).
Multi-opening multi-cavity quick-change type timber microwave pretreatment device the most according to claim 2, it is characterized in that: described refrigerating module (42) includes that water-filled radiator (421), water inlet (422) and discharge outlet (423), described water inlet (422) and discharge outlet (423) are arranged on water-filled radiator (421).
Multi-opening multi-cavity quick-change type timber microwave pretreatment device the most according to claim 3, it is characterized in that: described temperature detecting module (2) includes for the infra-red ray detection device (21) to wood surface thermometric with for the optical fibers to wood internal thermometric, described infra-red ray detection device (21) is installed in resonator cavity housing (3) and above and extends in resonator cavity (31), and described optical fibers implants wood internal.
Multi-opening multi-cavity quick-change type timber microwave pretreatment device the most according to claim 4, it is characterized in that: described resonator cavity housing (3) top is equiped with the crown cap (6) for hiding resonator cavity (31), described crown cap (6) offers the through hole (61) walked for moisture discharge and optical fibers being evenly arranged.
Multi-opening multi-cavity quick-change type timber microwave pretreatment device the most according to claim 5, it is characterised in that: a diameter of 2mm of described through hole (61), the spacing between each through hole (61) is 20mm.
Multi-opening multi-cavity quick-change type timber microwave pretreatment device the most according to claim 6, it is characterized in that: the plurality of microwave source and resonant tank module include the cylindrical three mouthfuls of resonator cavitys of single microwave source square single port resonator cavity, double microwave source square twoport resonator cavity, three microwave sources and the cylindrical four mouthfuls of resonator cavitys of four microwave sources, resonator cavity housing (3) the week side of described single microwave source square single port resonator cavity is provided with a microwave source (4), and the resonator cavity (31) of described single microwave source square single port resonator cavity is rectangular structure；Resonator cavity housing (3) the week side of described pair of microwave source square twoport resonator cavity is provided with two microwave sources (4), and the resonator cavity (31) of described pair of microwave source square twoport resonator cavity is rectangular structure；Resonator cavity housing (3) the week side of the cylindrical three mouthfuls of resonator cavitys of described three microwave sources is provided with three microwave sources (4) being evenly arranged, and the resonator cavity (31) of the cylindrical three mouthfuls of resonator cavitys of described three microwave sources is cylindrical structure；Resonator cavity housing (3) the week side of the cylindrical four mouthfuls of resonator cavitys of described four microwave sources is provided with four microwave sources (4) being evenly arranged, and the resonator cavity (31) of the cylindrical four mouthfuls of resonator cavitys of described four microwave sources is cylindrical structure.
Multi-opening multi-cavity quick-change type timber microwave pretreatment device the most according to claim 7, it is characterised in that: the length and width of the resonator cavity (31) in described single microwave source square single port resonator cavity, double microwave source square twoport resonator cavity between 120～300mm, the degree of depth is between 80～150mm；The diameter of the resonator cavity (31) of the described three cylindrical three mouthfuls of resonator cavitys of microwave sources and the cylindrical four mouthfuls of resonator cavitys of four microwave sources between 120～300mm, the degree of depth is between 80～500mm.
Multi-opening multi-cavity quick-change type timber microwave pretreatment device the most according to any one of claim 1 to 8, it is characterized in that: described universal head (1) includes frame (11), described resonator cavity housing (3) is installed in frame (11) top, described frame (11) is provided with power module (12), temperature control display module (13), output power module (14) and microwave source electric current display module (15), described power module (12), output power module (14) and microwave source electric current display module (15) are all coupled by wire with microwave source (4), described temperature control display module (13) is coupled by wire with temperature detecting module (2), described resonator cavity housing (3) is installed in frame (11) top.
10. the using method of a multi-opening multi-cavity quick-change type timber microwave pretreatment device, it is characterized in that: comprise the following steps: S1: make test specimen: the timber that moisture content is higher than 10% is processed into square and cylinder specimen, the thickness of square lumber is between 10-120mm, length and width is between 100-290mm, the height of cylindrical timber is between 70-490mm, and diameter is between 10-290mm；
The boring of S2: test specimen with weigh: on square and cylinder specimen, process the individual a diameter of 1mm of 4-8, the preformed hole of degree of depth 10-30mm, weigh in the balance and take each timber test specimen initial mass record；
S3: microwave source and resonant tank module are installed: microwave source and the resonant tank module of selection are fixed on universal head (1), infra-red ray detection device (21) is arranged on resonator cavity housing (3), connect the power lead of microwave source (4), circulating water pipe, connect the temperature sensor line of temperature detecting module (2)；
S4: test specimen is installed: be placed in resonator cavity (31) by the timber test specimen of selection, then by optical fibers through the through hole (61) on crown cap (6), optical fibers temperature probe is inserted in the preformed hole in timber test specimen, fibre-optic thermometric end is coupled with universal head (1)；
S5: microwave pretreatment: start universal head (1), make magnetron (41), refrigerating module (42), infra-red ray detection device (21) and optical fibers run and timber test specimen is carried out microwave pretreatment, observing timber surface of test piece and the temperature variations of inside, the temperature of wood internal is less than 220 DEG C；
S6: terminate: close down universal head (1), takes out the timber test specimen after microwave treatment and weighs it and record.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110000691A (en) * | 2019-04-27 | 2019-07-12 | 林丽芳 | A kind of solid wood board wire-drawing frame that timber processing is wound with electric resonance solution tide |
| CN111251394A (en) * | 2020-03-04 | 2020-06-09 | 南京林业大学 | Method for improving wood permeability |
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| JP2003240443A (en) * | 2002-02-13 | 2003-08-27 | Toshiba Monofrax Co Ltd | Microwave heating furnace for high temperatures |
| CN203077419U (en) * | 2013-02-02 | 2013-07-24 | 中南林业科技大学 | Microwave pretreatment device |
| CN104797029A (en) * | 2015-03-26 | 2015-07-22 | 中南林业科技大学 | Resonant cavity for verifying wood microwave pretreatment temperature distribution |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003240443A (en) * | 2002-02-13 | 2003-08-27 | Toshiba Monofrax Co Ltd | Microwave heating furnace for high temperatures |
| CN203077419U (en) * | 2013-02-02 | 2013-07-24 | 中南林业科技大学 | Microwave pretreatment device |
| CN104797029A (en) * | 2015-03-26 | 2015-07-22 | 中南林业科技大学 | Resonant cavity for verifying wood microwave pretreatment temperature distribution |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110000691A (en) * | 2019-04-27 | 2019-07-12 | 林丽芳 | A kind of solid wood board wire-drawing frame that timber processing is wound with electric resonance solution tide |
| CN111251394A (en) * | 2020-03-04 | 2020-06-09 | 南京林业大学 | Method for improving wood permeability |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105818234B (en) | 2017-08-11 |
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