Heating element for wood drying device and wood drying device using same

Abstract

The present invention relates to a heating element for a wood drying device, and a wood drying device, comprising: a corrugated metal plate interposed between upper and lower stacked wood pieces and having alternating peaks and valleys; a heating cable which generates heat when power is applied; and a plurality of heat transfer pipes which are tightly bonded to the corrugated metal plate between the peaks and valleys of the corrugated metal plate to reinforce the strength of the corrugated metal plate, and into which the heating cable is sequentially inserted to transfer heat generated from the heating cable to the corrugated metal plate. The present invention is capable of uniformly transferring heat to the entire wood piece with a very simple structure, greatly improving the efficiency of heat transfer from the heating cable to the corrugated metal plate, greatly extending the service life of the heating element, and greatly improving the convenience of stacking wood pieces for drying wood.

Description

[Technical field]

[0001] The present invention relates to a heating element for a wood drying device and a wood drying device using the same, and more particularly to a heating element for a wood drying device that can evaporate moisture contained in wood to dry the wood and prevent the wood-based product from being deformed or cracked while being dried, and a wood drying device using the same. [Background technology]

[0002] Generally, wood has a relatively high moisture content, so if wood is used to make products without drying it sufficiently, the product will deform as the wood dries over time. Therefore, wood needs to be dried to evaporate the moisture and dry it before it can be used to make products.

[0003] There are two methods for drying wood: natural drying and heat drying. The natural drying method involves piling wood in a drying area and drying it using the temperature and humidity of the atmosphere, which requires low facility costs and is relatively simple to operate, but has the disadvantages of a long drying time, a large drying area, and the inability to dry wood below its air-dried moisture content. On the other hand, the heat drying method involves artificially adjusting the drying conditions, such as the temperature, humidity, and wind speed of the drying chamber, and has the advantages of a relatively short drying time and the ability to dry wood below its air-dried moisture content.

[0004] Devices used in the heating and drying method include devices that install an electric heater directly in the drying chamber to heat the air inside, devices that inject heated air into the drying chamber through a hot air blower that obtains heat from a combustion device, devices that heat a heat medium in a combustion device and then inject this into the drying chamber to indirectly heat the air in the drying chamber, devices that inject superheated steam into the drying chamber, and high-frequency vacuum drying devices that use high-frequency waves to generate heat and dry wood in a vacuum chamber.

[0005] However, the above-mentioned heat drying method requires excessive costs for purchasing and installing the device, and since a drying chamber must be maintained in a vacuum and a high-power radio frequency must be generated, the operation costs of the radio frequency vacuum drying device are burdensome. In addition, the method is constantly exposed to the risk of electric leakage and fire, and the efficiency of converting electrical energy into thermal energy using a radio frequency generator is low, so that excessive operation costs must be invested.

[0006] As a wood drying device to solve these problems, a "portable wood drying device equipped with a planar heating element, and drying method" was disclosed in Korean Patent Registration No. 10-20622351 (registered on December 27, 2019).

[0007] Such a wood drying device using a conventional sheet heating element as a heat generating means is advantageous in that it can minimize the surface cracking phenomenon in which the surface of the wood cracks because the wood is dried from the inside, and can obtain high energy efficiency with low equipment purchase and installation costs, as well as being able to be manufactured using inexpensive materials and being lightweight.

[0008] However, conventional wood drying devices that use a typical sheet heating element as a heat generating means have problems in that not only is the temperature of the sheet heating element uneven, but there is also a risk of fire if the temperature rises locally in one part of the sheet heating element, and because the sheet heating element and wood are in continuous contact with each other, moisture released from the wood cannot be effectively discharged.

[0009] Other documents disclosing technologies related to wood drying include Korean Patent No. 10-2397995 (2022.05.10.), Korean Patent No. 10-2062351 (2019.12.27.), Korean Patent No. 10-1430031 (2014.08.07.), and Korean Patent No. 10-1434472 (2014.08.20.). Summary of the Invention [Problem to be solved by the invention]

[0010] The object of the present invention is to provide a heating element for a wood drying device which is not only capable of uniformly transferring heat to the entire wood with a very simple structure, but also significantly improves the efficiency of heat conduction from the heating cable to the uneven metal plate, and a wood drying device utilizing the same.

[0011] Another object of the present invention is to provide a heating element for a wood drying device, which can significantly extend the service life of the heating element and significantly improve the convenience of wood stacking work for drying wood, and a wood drying device using the same. [Means for solving the problem]

[0012] In order to achieve the above object, the present invention provides a heating element for a wood drying apparatus, comprising: a corrugated metal plate interposed between vertically stacked wood pieces and having alternating peaks and valleys; a heating cable which generates heat when power is applied; and a plurality of heat transfer pipes which are tightly bonded to the corrugated metal plate between the peaks and valleys of the corrugated metal plate to reinforce the strength of the corrugated metal plate, and into which the heating cable is sequentially inserted to transfer heat generated from the heating cable to the corrugated metal plate.

[0013] For example, the uneven metal plate may be formed with flat tops of peaks and flat bottoms of valleys so as to ensure a large contact area with adjacent wooden pieces stacked one on top of the other.

[0014] In addition, the present invention may further include a temperature detection sensor that detects the temperature of the uneven metal plate as power is applied to the heating cable, and a control unit that can cut off or apply power to the heating cable by comparing the temperature of the uneven metal plate detected by the temperature detection sensor with a preset reference temperature.

[0015] For example, the heat transfer pipe may be made of an aluminum material having high thermal conductivity, which is not corroded by moisture discharged from wood by the heating cable and water condensed from the moisture.

[0016] In order to achieve the above object, the present invention provides a wood drying device that includes at least one heating element interposed between adjacent pieces of wood stacked vertically, so that adjacent pieces of wood stacked vertically can be supported at a predetermined distance from each other to form a space between the adjacent pieces of wood stacked vertically, generate heat, and transfer heat evenly to the adjacent pieces of wood through heat transfer via heated high-temperature air and direct heat transfer by conduction to dry the wood. The heating element includes a corrugated metal plate interposed between the pieces of wood stacked vertically and having alternating peaks and valleys, a heating cable that generates heat when power is applied, and a plurality of heat transfer pipes into which the heating cable is sequentially inserted and which transfer heat generated from the heating cable to the corrugated metal plate while being tightly coupled to the corrugated metal plate between the peaks and valleys of the corrugated metal plate to reinforce the strength of the corrugated metal plate.

[0017] For example, the uneven metal plate may have flat tops of peaks and flat bottoms of valleys so as to ensure a large contact area with adjacent wooden pieces stacked one on top of the other.

[0018] In addition, the heating element may further include a temperature detection sensor that detects a temperature of the uneven metal plate as power is applied to the heating cable, and a control unit that compares the temperature of the uneven metal plate detected by the temperature detection sensor with a preset reference temperature and cuts off or applies power to the heating cable.

[0019] For example, the heat transfer pipe may be made of an aluminum material having high thermal conductivity and is not corroded by moisture discharged from the wood by the heating cable and water condensed from the moisture. Effect of the Invention

[0020] As described above, in the heating element for a wood drying device according to one embodiment of the present invention and the wood drying device using the same, the heating element is manufactured in a structure in which the heating cable is sequentially inserted into a plurality of heat transfer pipes that are closely fixed to the uneven metal plate without any gaps.

[0021] As a result, the freely flexible heating cable does not sag or bend under its own weight, and when the heating element and wood are alternately stacked to dry the wood, interference between the heating cable and the wood does not occur, and the heating cable is not pulled and bent due to interference between the heating cable and the wood.

[0022] Therefore, even if an external force is applied to the corrugated metal plate and the heat transfer pipe into which the heating cable is sequentially inserted, the corrugated metal plate and the heat transfer pipe are always kept in close contact with each other, thereby preventing a decrease in the efficiency of heat transfer to the corrugated metal plate due to the occurrence of gaps, and greatly improving the convenience of work when stacking wood. In addition, as the heating cable is protected by the heat transfer pipe, the service life of the heating cable can be greatly extended even in poor working conditions.

[0023] In addition, the heating element for a wood drying apparatus according to one embodiment of the present invention and the heating element of a wood drying apparatus using the same transfer heat evenly throughout the wood, thereby enabling the entire wood to be dried under uniform thermal environment conditions, thereby preventing phenomena such as cracking or warping of the wood.

[0024] Therefore, since the wood can be dried immediately without a natural drying process for lowering the moisture content when drying the wood, the wood drying time can be significantly shortened.

[0025] In addition, in the heating element for a wood drying device and a wood drying device using the same according to one embodiment of the present invention, the heating element is manufactured in a structure in which a heating cable is sequentially inserted into a plurality of heat transfer pipes that are tightly fixed to an uneven metal plate without any gaps, so that the freely flexible heating cable does not sag or bend under its own weight, and when the heating element and wood are alternately stacked to dry the wood, no interference occurs between the heating cable and the wood, and the heating cable is not pulled and bent due to interference between the heating cable and the wood.

[0026] In other words, the corrugated metal plate and the heat transfer pipe into which the heating cable is sequentially inserted are always kept in close contact even when an external force is applied, thereby preventing the occurrence of gaps that would reduce the efficiency of heat transfer to the corrugated metal plate. This greatly improves the convenience of stacking wood pieces, and also greatly extends the service life of the heating cable even in poor working conditions, as the heating cable is protected by the heat transfer pipe.

[0027] In addition, the heating element for a wood drying apparatus according to one embodiment of the present invention and the heating element of a wood drying apparatus using the same transfer heat evenly throughout the wood, thereby drying the entire wood under uniform thermal environment conditions, thereby preventing phenomena such as cracking or warping of the wood.

[0028] Therefore, since the wood can be dried immediately without a natural drying process for reducing the moisture content when drying the wood, the drying time of the wood can be significantly shortened.

[0029] In other words, if the moisture content of wood is reduced through a natural drying process to prevent the wood from cracking or warping when it is dried, and then the wood is dried using a general wood drying device, it would take about two years to dry the wood. However, the present invention can uniformly transfer heat of the same temperature to the entire front, rear shell and core of the wood, so that the wood does not crack or warp when it is dried even without the natural drying process, and therefore the drying time of the wood can be significantly shortened.

[0030] In addition, the heating element for a wood drying device according to one embodiment of the present invention and the wood drying device using the same do not require any welding work and minimize bolt tightening work, and the assembled main body frame and assembled loop frame that form the framework of the housing can be installed very quickly and easily by sliding fastening work using the first to sixth connecting sockets.

[0031] Meanwhile, by combining a sealing member made of a waterproof material such as a waterproof cloth to surround the prefabricated main body frame and the prefabricated loop frame, the drying chamber can be formed very simply and quickly.

[0032] As described above, the heating element for a wood drying device according to an embodiment of the present invention and the housing of a wood drying device using the same are formed in an assembled form, and are very easy to install and disassemble. In addition, the sealing member can be folded or rolled up for storage and transportation, and the assembled main body frame and assembled loop frame can be separated into a plurality of horizontal support stands, vertical support stands, and connecting sockets, which greatly reduces the volume of the housing package and greatly simplifies the installation work during delivery and relocation. Except for the installation of the vertical support stands, the assembled main body frame and assembled loop frame that form the framework of the housing can be installed very quickly and easily by only sliding fastening using the first to sixth connecting sockets.

[0033] Meanwhile, by combining a sealing member made of a waterproof material such as a waterproof cloth to the prefabricated main body frame and the prefabricated loop frame so as to surround the prefabricated main body frame and the prefabricated loop frame, the drying chamber can be formed very simply and quickly.

[0034] As described above, the heating element for a wood drying apparatus according to one embodiment of the present invention and the housing of a wood drying apparatus using the same are formed in an assembled type, which makes installation and disassembly very easy. In addition, in the case of a sealing member, it can be folded or rolled up for storage and transportation. In the case of an assembled main body frame and an assembled loop frame, it can be separated into a plurality of horizontal support stands, vertical support stands and connecting sockets, which significantly reduces the volume of the housing package and makes delivery, relocation and installation very easy.

[0035] Finally, the heating element for a wood drying device according to an embodiment of the present invention and the wood drying device using the same can minimize heat loss and significantly reduce maintenance costs, can transfer heat uniformly throughout the wood, and can dry the entire wood under uniform thermal environment conditions, and can significantly shorten the wood drying time since the wood does not crack or warp during drying and can be dried immediately without a natural drying process, and can significantly extend the service life of the heating element. In addition, the convenience of stacking wood for drying wood can be significantly improved, and the housing can be easily assembled and disassembled, making installation and relocation very easy, and the volume of the housing package can be minimized during disassembly, greatly improving the convenience of storage and transportation, thereby improving customer satisfaction and product reliability. [Brief description of the drawings]

[0036] [Figure 1] 1 is an exploded perspective view illustrating a wood drying device according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a perspective view of a heating element according to one embodiment of the present invention. [Diagram 3] 1 is a diagram showing a state in which a heating element is interposed between adjacent wooden pieces stacked vertically. [Figure 4] FIG. 2 is a block diagram for explaining a heating element. [Diagram 5] 1 is a diagram for explaining an assembled main body frame and a loop frame. [Figure 6] 1 is a diagram showing a state in which wood and a heating element are layered inside a housing. [Figure 7] 1 is a diagram for explaining a drainage means. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0037] 1 to 7, a wood drying apparatus 100 according to an embodiment of the present invention may include a heating element 110 and a housing 120.

[0038] The heating element 110 generates heat while supporting adjacent pieces of wood W spaced apart from each other by a predetermined distance so that a space S is formed between adjacent pieces of wood W stacked vertically, and at least one heating element 110 may be interposed between adjacent pieces of wood W stacked vertically so that the wood W can be dried by uniformly transferring heat to the adjacent pieces of wood W through heat transfer by heated high-temperature air and direct heat transfer by conduction.

[0039] For example, the heating element 110 may include a corrugated metal plate 111 , a heating cable 112 , and a heat transfer pipe 113 .

[0040] The uneven metal plate 111 may be bent so that a number of peaks and valleys are alternately formed.

[0041] Here, the uneven metal plate 111 is preferably made of a metal such as steel, copper, stainless steel, or aluminum, which has high rigidity and good thermal conductivity.

[0042] Such a concave-convex metal plate 111 can be interposed between wooden pieces W stacked vertically so that the wooden pieces W stacked vertically can be supported with a predetermined distance between them. By interposing the concave-convex metal plate 111 between the wooden pieces W stacked vertically, a space S can be formed between the wooden pieces W stacked vertically by the peaks and valleys of the concave-convex metal plate 111.

[0043] Therefore, when power is applied to the heating cable 112 to generate heat and moisture is generated from the wood W, the moisture generated from the wood W can be discharged through the peaks or valleys, and the heat generated from the heating cable 112 can be uniformly transferred to the wood W.

[0044] Meanwhile, it is preferable that the upper portions of the peaks and the lower portions of the valleys of the uneven metal plate 111, which come into contact with the adjacent wooden pieces W stacked vertically, are formed flat so as to ensure a wide contact area with the wooden pieces W and to be in close contact with the wooden pieces W to improve thermal conductivity.

[0045] For example, it is preferable that the peaks and valleys of the uneven metal plate 111 are formed to have a trapezoidal cross-sectional shape.

[0046] The heating cables 112 are disposed in a plurality of spaces S formed by the peaks and valleys of the corrugated metal plate 111, and can transfer heat evenly to the entire adjacent pieces of wood W through heat transfer by high-temperature air heated to the wood W when power is applied and direct heat transfer through conduction to the corrugated metal plate 111, thereby drying the wood W.

[0047] For example, the heating cable 112 may be a chrome-plated wire surrounded by a stainless steel wire.

[0048] Meanwhile, both ends of the heating cable 112 are connected to a power source.

[0049] The heat transfer pipes 113 may be arranged at a predetermined interval, be in close contact with the corrugated metal plate 111 without any gaps, and then be fixed to the corrugated metal plate 111 via a plurality of fixing means 113a.

[0050] The heating cable 112 disposed in the space S of the concave-convex metal plate 111 can be inserted into the heat transfer pipe 113 .

[0051] That is, the heating cables 113 may be sequentially inserted into a plurality of heat transfer pipes 112 arranged at predetermined intervals on the uneven metal plate 111 and closely fixed without any gaps.

[0052] A plurality of heat transfer pipes 113 are fixed to the corrugated metal plate 111 at predetermined intervals, so that the strength of the corrugated metal plate 111 can be significantly reinforced.

[0053] In addition, the heating cable 112 is protected from exposure in the space S formed between the wood pieces W stacked vertically by being sequentially inserted into a plurality of heat transfer pipes 113, thereby preventing the heating cable 112 from being damaged when stacking the wood pieces W for drying the wood W or when dismantling the stacked wood pieces W after drying is completed. As a result, the service life of the heating cable 112 is significantly extended, and the stacking and dismantling of the stacked wood pieces W can be performed more easily, thereby significantly improving the work efficiency during the wood drying work.

[0054] In addition, the heat transfer pipe 113 is tightly coupled to the corrugated metal plate 111 without any gaps, so that the efficiency of heat transfer from the heating cable 112 inserted inside to the corrugated metal plate 111 can be significantly improved.

[0055] More specifically, if the heat transfer pipe 113 is not installed on the corrugated metal plate 111 and only the heating cable 112 itself is fixed using a plurality of fixing members 113a, the heating cable 112 will sag or bend under its own weight due to the freely bending characteristic of the heating cable 112. As a result, a gap will be generated between the heating cable 112 and the corrugated metal plate 111, and the efficiency of heat transfer from the heating cable 112 to the corrugated metal plate 111 will be significantly reduced.

[0056] In addition, when the heating elements 110 and the wood W are alternately stacked in the vertical direction to dry the wood W, interference occurs between the wood W and the heating cable 112. When the heating cable 112 is pulled, a larger gap occurs between the uneven metal plate 111 and the heating cable 112, and the heat conduction efficiency is further reduced. As a result, the workability is significantly reduced when stacking the wood W, and many problems occur when stacking the wood.

[0057] In contrast, in the present invention, the heating cable 112 is sequentially inserted into a plurality of heat transfer pipes 113 tightly coupled to the corrugated metal plate 111 without any gaps, thereby significantly improving the efficiency of heat transfer from the heating cable 112 to the corrugated metal plate 111. Also, even when the heating element 110 and the wood W are alternately stacked in the vertical direction to dry the wood W, no interference occurs between the wood W and the heating cable 112. This solves the problem of interference between the wood W and the heating cable 112 that occurs when stacking the wood W, thereby significantly improving the convenience of stacking wood W for drying the wood W.

[0058] In addition, in the present invention, the heating cable 112 is inserted into a plurality of heat transfer pipes 113 in sequence, so that electromagnetic waves generated from the heating cable 112 during drying of the wood W can be blocked.

[0059] It is preferable that the heat transfer pipe 113 is made of an aluminum material having high thermal conductivity and is not corroded by the moisture discharged from the wood W dried by the heating cable 112 and the water condensed from the moisture.

[0060] In addition, the heating element 110 may further include a temperature sensor 114 and a control unit 115 .

[0061] The temperature sensor 114 can detect the heat temperature of the uneven metal plate 111 by applying power to the heating cable 112 .

[0062] The control unit 115 can compare the heating temperature of the uneven metal plate 111 detected by the temperature detection sensor 114 with a preset reference temperature and control the temperature by cutting off or applying power to the heating cable 112.

[0063] For example, when the control unit 115 determines that the heating temperature of the uneven metal plate 111 detected by the temperature detection sensor 114 is higher than a preset reference temperature, it can cut off power to the heating cable 112 to control the heating temperature so that the heating temperature of the uneven metal plate 111 is lower, and when the control unit 115 determines that the heating temperature of the uneven metal plate 111 detected by the temperature detection sensor 114 is lower than a preset reference temperature, it can apply power to the heating cable 112 to control the heating temperature of the heating cable 112 so that the heating temperature is higher.

[0064] In addition, the heating element 110 may further include a display unit (not shown) connected to the control unit 115, which can display the temperature of the uneven metal plate 111 sensed by the temperature sensor 114 and transmitted to the control unit.

[0065] The housing 120 may form a drying chamber C that accommodates the vertically stacked wood pieces W and at least one heating element 110 interposed between the wood pieces W adjacent to each other.

[0066] Such a housing 120 can condense water vapor generated from wood W into water as the heating cable 112 of the heating element 110 is operated to raise the temperature within the drying chamber C formed by the housing.

[0067] Meanwhile, the housing 120 can be assembled and disassembled without welding, and when disassembled, can be manufactured in an assembled form that minimizes volume and is easy to store and transport.

[0068] For example, the housing 120 may include a heat insulating base plate 121 , a prefabricated body frame 122 , a prefabricated loop frame 123 , and a sealing member 124 .

[0069] The heat insulating bottom plate 121 may be installed on the upper part of the base frame F. Meanwhile, wood pieces W to be dried may be placed on the upper part of the heat insulating bottom plate 121, the wood pieces W being stacked vertically with a plurality of heating elements 110 interposed therebetween.

[0070] Here, the heat insulating bottom plate 121 is preferably made of heat resistant urethane.

[0071] In the prefabricated main body frame 122, a plurality of first vertical support stands 1221 are detachably installed at corners of the upper surface of the heat-insulating bottom plate 121 by fixing members so that the wood W and the heating element 110 can be accommodated inside, and a first horizontal support stand 1223 can be detachably connected to upper ends of the adjacent first vertical support stands 1221 through a first connection socket 1222. Even if they are detachably connected, a bolt can be fastened and fixed by passing through the first connection socket 1222 and pressing the first vertical support stand 1221 at its end so as to prevent the first connection socket 1222 and the first vertical support stand 1221 from moving relative to each other when the first vertical support stand 1221 is inserted into the first connection socket 1222. The same fixing method can be applied to the connection of the connection socket and the support stand described below.

[0072] In addition, the prefabricated main body frame 122 may further include a second connection socket 1224 .

[0073] The second connecting socket 1224 is used when the first horizontal support base 1223 located at the front and rear of the prefabricated main body frame 122 is formed as a plurality of divided pieces, and is disposed between the plurality of divided first horizontal support bases 1223 so as to detachably connect and extend adjacent first horizontal support bases 1223 to the desired length.

[0074] In addition, the prefabricated main body frame 122 may further include a third connecting socket 1225 and an auxiliary lateral support base 1226 .

[0075] The third connecting socket 1225 is used when the first vertical support base 1221 of the prefabricated main body frame 122 is formed in a plurality of divided parts, and is disposed between the plurality of divided first vertical support bases 1221 to detachably connect and extend adjacent first vertical support bases 1221 by a desired length.

[0076] A plurality of the auxiliary horizontal supports 1226 may be disposed on both sides of the prefabricated main body frame 122, and both ends of the auxiliary horizontal supports 1226 may be detachably connected to the third connection sockets 1225 adjacent to each other.

[0077] Meanwhile, a fixed panel 1227 made of a material such as polycarbonate may be installed on the auxiliary horizontal support 1226, on which a control box B having a control unit 115 and a power connector P connected to the heating element 110 are installed.

[0078] The prefabricated loop frame 123 has a second vertical support base 1231 detachably connected to a first horizontal support base 1223 located at both ends of the upper end of the prefabricated main body frame 122 via a fourth connecting socket 1232, and both ends of a second horizontal support base 1234 are detachably connected to the upper ends of the pair of second vertical support bases 1231 via a fifth connecting socket 1233, and both ends of a diagonal support base 1235 can be detachably connected to the fifth connecting socket 1233 and the first connecting socket 1222 of the prefabricated main body frame 122.

[0079] In addition, the collapsible loop frame 123 may further include a sixth connection socket 1236 and an auxiliary diagonal support 1237 .

[0080] The sixth connecting socket 1236 is used when the second horizontal support base 1234 is formed in a plurality of divided pieces, and is disposed between the plurality of divided second horizontal support bases 1234 so as to detachably connect and extend adjacent second horizontal support bases 1234 to a desired length.

[0081] The auxiliary diagonal support base 1237 can reinforce the assembled loop frame 123 by having both ends detachably connected to the second connecting socket 1224 that connects the first horizontal support base 1223, which is divided into multiple parts, and the sixth connecting socket 1236 that connects the second horizontal support base 1234, which is divided into multiple parts.

[0082] Meanwhile, although not shown, it is preferable that the exterior surfaces of the prefabricated main body frame 122 and the prefabricated loop frame 123 are insulated using an insulating material to prevent heat loss caused by heat generated from the heating element 110 being transferred to the prefabricated main body frame 122 and the prefabricated loop frame 123 or by the prefabricated main body frame 122 and the prefabricated loop frame 123 being cooled by cold air from the outside.

[0083] The sealing member 124 is connected to the prefabricated main body frame 122 and the prefabricated loop frame 123 so as to surround the prefabricated main body frame 122 and the prefabricated loop frame 123, thereby sealing the internal space of the drying chamber C formed by the prefabricated main body frame 122 and the prefabricated loop frame 123, and it is preferable that the sealing member 124 is made of a waterproof material such as a waterproof cloth.

[0084] For example, the sealing member 124 may include a loop sealing portion 1241 , a side sealing portion 1242 , a rear sealing portion 1243 , and a front sealing portion 1244 .

[0085] The loop closure portion 1241 may be coupled to the prefabricated loop frame 123 so as to surround the prefabricated loop frame 123 .

[0086] The side sealing parts 1242 are extended from the lower ends of both sides of the loop sealing part 1241 and are coupled to the prefabricated body frame 122, thereby sealing both sides of the prefabricated body frame 122.

[0087] The rear sealing portion 1243 extends from the lower end of the rear portion of the loop sealing portion 1241 and is connected to the prefabricated main body frame 122 to seal the rear portion of the prefabricated main body frame 122, and can be connected to the pair of side sealing portions 1242 by a detachable connecting means (not shown).

[0088] For example, the rear sealing portion 1243 may be connected to the pair of side sealing portions 1242 by a connecting means such as a Velcro tape so as to be separably connectable thereto.

[0089] The front sealing portion 1244 extends from the lower end of the front portion of the loop sealing portion 1241 and is connected to the prefabricated main body frame 122 to seal the front portion of the prefabricated main body frame 122, and can be connected to the pair of side sealing portions 1242 by a detachable connecting means (not shown).

[0090] For example, the front sealing portion 1244 may be detachably connected to the pair of side sealing portions 1242 as well as the rear sealing portion 1243 by a connecting means such as a Velcro tape.

[0091] Meanwhile, the front sealing part 1244 may be provided with a transparent window 1244a through which the state of the wood being dried inside the drying chamber C can be inspected.

[0092] In addition, the sealing member 124 may further include a fixing member (not shown).

[0093] The fixing member is provided at the lower end of the loop sealing part 124 and can fix the front sealing part 1244 rolled up on the loop sealing part 1241 side to form an entrance / exit for feeding wood W into the drying chamber C or discharging wood W that has completed drying to the outside of the drying chamber C.

[0094] For example, a Velcro tape may be used as the fixing member.

[0095] Additionally, the sealing member 124 may further include a drainage means 1245 .

[0096] The drainage means 1245 is provided at the lower end of the inner surface of the sealing member 124, and enables moisture discharged as the wood W is heated by the heating element 110 to be condensed on the inner surface of the sealing member 124 and for the water flowing along the sealing member 124 to be discharged to the outside of the drying chamber C.

[0097] For example, the drainage means 1245 may include a pocket forming member 1245a and a drain hole 1245b.

[0098] The pocket forming member 1245a is attached to the lower end of the inner surface of the sealing member 124 so as to form a pocket at the lower end of the inner surface of the sealing member 124, thereby allowing water that condenses and flows on the inner surface of the sealing member 124 to accumulate in the pocket.

[0099] The discharge holes 1245b are formed at predetermined intervals in the sealing member 124 so as to be positioned on the lower side of the pocket forming member 1245a, thereby allowing water to be discharged outside the sealing member 124, i.e., outside the drying chamber C, through the discharge holes 1245b when water flows along the inner surface of the sealing member 124 toward the pocket forming member 1245a.

[0100] 1 to 7, the process of installing the housing and the process of drying wood using the wood drying apparatus will be described.

[0101] First, in order to install the housing 120 of the wood drying apparatus 100 according to one embodiment of the present invention, a heat-insulating bottom plate 121 is installed on the top of the base frame F, and then an assembled main body frame 122 is installed on the top of the heat-insulating bottom plate 121.

[0102] More specifically, the first vertical support members 1221 are installed at each corner of the upper surface of the heat insulating bottom plate 121 installed on the upper portion of the base frame F using fixing members.

[0103] At this time, the first vertical support 1221 may be divided into a plurality of parts and detachably connected to the third connection socket 1225 according to a required length.

[0104] Meanwhile, a first horizontal support bar 1223 is detachably connected to the upper ends of the adjacent first vertical support bars 1221 via a first connection socket 1222 .

[0105] Here, the first horizontal support base 1223 located at the front and rear of the prefabricated main body frame 122 may be divided into a plurality of pieces, and the first horizontal support base 1223 formed into a plurality of pieces may be detachably connected to a desired length by the second connecting socket 1224.

[0106] In addition, the third connecting sockets 1225, which are adjacent to each other so as to be located on both sides of the prefabricated main body frame 122, can be detachably connected to both end portions of an auxiliary horizontal support stand 1226, and a fixed panel 1227 on which a control box B including a control unit 115 and a power connection unit P are installed can be installed on the auxiliary horizontal support stand 1226.

[0107] Thereafter, the prefabricated loop frame 123 is detachably connected to the upper part of the prefabricated main body frame 122 and installed.

[0108] More specifically, a second vertical support 1231 is detachably connected to a first horizontal support 1223 located at both ends of the upper end of the prefabricated main frame 122 through a fourth connection socket 1232 .

[0109] In addition, both ends of a second horizontal support bar 1234 are detachably connected to the upper end of the second vertical support bar 1231 via a fifth connection socket 1233 .

[0110] Here, the second horizontal support 1234 may be divided into a plurality of sections, and may be detachably connected to the sixth connection socket 1236 according to a required length.

[0111] In addition, both ends of a diagonal support 1235 are detachably connected to the fifth connecting socket 1233 and the first connecting socket 1222 of the prefabricated main body frame 122 .

[0112] In addition, the assembled loop frame 123 can be reinforced by removably connecting an auxiliary diagonal support base 1237 to the second connecting socket 1224, which connects the multiple divided first horizontal support bases 1223, and the sixth connecting socket 1236, which connects the multiple divided second horizontal support bases 1234.

[0113] As described above, when the assembly of the prefabricated main body frame 122 and the prefabricated loop frame 123 is completed, the assembly of the housing 120 is completed by connecting the sealing member 124 to the prefabricated main body frame 122 and the prefabricated loop frame 123 so as to surround the prefabricated main body frame 122 and the prefabricated loop frame 123.

[0114] As described above, the housing 120 of the wood drying apparatus 100 according to one embodiment of the present invention does not require any welding work, and the housing 120 can be installed very quickly and easily by sliding fastening work using multiple connecting sockets while minimizing bolt tightening work, to form the drying chamber C.

[0115] In order to quickly and easily dry wood using the wood drying apparatus 100 in which the housing 120 is installed and the drying chamber C is formed as described above, first, the front sealing portion 1244 of the sealing member 124 is rolled up and fixed to the lower end of the loop sealing portion 1241 using a plurality of fixing members such as Velcro tape, thereby opening the front portion of the drying chamber C and forming an entrance and exit.

[0116] As described above, after the front part of the drying chamber C formed by the housing 120 is opened to form an entrance, the wood W and the heating element 110 are moved into the inside of the drying chamber C formed by the housing 120 through the entrance and stacked on top of the insulating bottom plate 121.

[0117] Here, it is preferable to stack multiple pieces of wood W vertically on the insulating bottom plate 121 inside the drying chamber C, with a heating element 110 interposed therebetween, so that a space S is formed between adjacent pieces of wood W stacked vertically.

[0118] At this time, the heating element 110 has a plurality of heat transfer pipes 113 arranged at predetermined intervals on the corrugated metal plate 111 and is fixed in close contact with the corrugated metal plate 111 without any gaps, and the heating cable 112 is inserted sequentially into the plurality of heat transfer pipes 113 arranged at predetermined intervals on the corrugated metal plate 111 and is fixed in close contact with the corrugated metal plate 111 without any gaps.

[0119] Therefore, when stacking multiple pieces of wood W and multiple heating elements 110 alternately, the heating cable 112 is not exposed in the space S formed between the pieces of wood W stacked one above the other.

[0120] That is, since the heating cable 112 is surrounded by the heat transfer pipe 113 and is not exposed to the space S formed between the pieces of wood W, the heating cable 112 is prevented from being damaged when stacking the pieces of wood W to dry them or when dismantling the stacked pieces of wood W after drying. This significantly extends the service life of the heating cable 112 and also makes it possible to stack the pieces of wood W or dismantle the stacked pieces of wood W very quickly and easily.

[0121] In addition, when the wooden pieces W are stacked, the heating cable 112 is not pulled and sagged or bent due to interference between the heating cable 112 and the wooden pieces W, and no gap is generated between the uneven metal plate 111 and the heating cable 112, so that the heat conduction efficiency can be significantly improved.

[0122] As described above, after stacking multiple pieces of wood W and heating elements 110 on the insulating bottom plate 121, the front sealing portion 1244, which is rolled up toward the loop sealing portion 1241 and fixed by a fixing member, is released and the front sealing portion 1244 is expanded, and then both sides of the front sealing portion 1244 are connected to a pair of side sealing portions 1242 by a connecting means, thereby sealing the drying chamber C.

[0123] Thereafter, when power is applied to the heating element 110 to heat the heating cable 112, the heat generated from the heating cable 112 is transferred to the heat transfer pipe 113, and the heated air through the heat transfer pipe 113 is uniformly transferred to the upper and lower surfaces of the adjacent wooden pieces W through the spaces S between the wooden pieces W formed by the multiple peaks and valleys of the corrugated metal plate 111 interposed between the adjacent wooden pieces W stacked vertically.

[0124] In addition, the drying of the wood W is promoted by the radiant heat generated by the heating cable 112, the heat transfer pipe 113, and the uneven metal plate 111, so that the drying efficiency of the wood W can be further improved.

[0125] In addition, when power is applied to the heating cable 112 to apply heat to the wood W and moisture is discharged from the wood W, the moisture contained in the air within the drying chamber C is condensed on the inner surface of the sealing member 124 .

[0126] Moisture condensed on the inner surface of the sealing member 124 flows along the sealing member 124 and is collected in the pocket forming member 1245a of the drainage means 1245 provided at the lower end of the inner surface of the sealing member 124, and the water is discharged to the outside of the sealing member 124 through the drainage hole 1245b.

[0127] At this time, the temperature sensor 114 detects the temperature of the uneven metal plate 111 of each heating element 110 interposed between adjacent pieces of wood W stacked vertically, and sends the temperature to the control unit 115. The control unit 115 compares the heat temperature of the uneven metal plate 111 with a preset reference temperature, and if it is determined that the heat temperature of the uneven metal plate 111 is higher than the reference temperature, it cuts off the power supplied to the heating cable 112, and if it is determined that the heat temperature of the uneven metal plate 111 is lower than the reference temperature, it applies power to the heating cable 112, thereby controlling the temperature inside the drying chamber C.

[0128] As described above, in the heating element for wood drying apparatus and the wood drying apparatus 100 using the same according to one embodiment of the present invention, the heating element 110 is manufactured in a structure in which the heating cable 112 is sequentially inserted into a plurality of heat transfer pipes 113 that are closely fixed to the uneven metal plate 111 without any gaps, so that the freely flexible heating cable 112 does not sag or bend under its own weight, and when the heating element and the wood W are alternately stacked to dry the wood W, no interference occurs between the heating cable 112 and the wood W, and the heating cable 112 does not bend due to being pulled due to interference between the heating cable 112 and the wood W.

[0129] That is, the corrugated metal plate 111 and the heat transfer pipe 113 into which the heating cable 112 is sequentially inserted are always kept in close contact even when an external force is applied, thereby preventing a decrease in the efficiency of heat transfer to the corrugated metal plate 111 due to the occurrence of gaps, and greatly improving the convenience of work when stacking the wooden pieces W. In addition, the heating cable 112 is protected by the heat transfer pipe 113, so that the service life of the heating cable 112 can be greatly extended even in poor working conditions.

[0130] In addition, the heating element for a wood drying apparatus according to one embodiment of the present invention and the heating element 110 of the wood drying apparatus 100 using the same transfer heat uniformly throughout the wood W, thereby drying the entire wood W under uniform thermal environment conditions, thereby preventing phenomena such as cracking or warping of the wood W.

[0131] Therefore, since the wood W can be dried immediately without a natural drying process for lowering the moisture content when drying the wood W, the drying time of the wood W can be significantly shortened.

[0132] In other words, in order to prevent the wood W from cracking or warping during drying, if the wood W is dried using a general wood drying device after the moisture content of the wood W is reduced through a natural drying process, it would take about two years to dry the wood W. However, the present invention can uniformly transfer heat of the same temperature to the entire front, rear shell and core of the wood W, so that the wood W does not crack or warp during drying even without a natural drying process, and the drying time of the wood W can be significantly shortened.

[0133] In addition, the heating element for a wood drying apparatus according to one embodiment of the present invention and the wood drying apparatus 100 using the same can very quickly and easily install the prefabricated main body frame 122 and the prefabricated loop frame 123, which form the framework of the housing, through a sliding fastening operation using multiple connecting sockets, except when installing the first vertical support stand 1221.

[0134] Meanwhile, by combining a sealing member 124 made of a waterproof material such as a waterproof cloth to the prefabricated main body frame 122 and the prefabricated loop frame 123 so as to surround the prefabricated main body frame 122 and the prefabricated loop frame 123, the drying chamber C can be formed very simply and quickly.

[0135] As described above, the heating element for a wood drying apparatus according to one embodiment of the present invention and the housing 120 of the wood drying apparatus 100 using the same are formed in an assembled type, which makes installation and disassembly very easy. In addition, the sealing member 124 can be folded or rolled up for storage and transportation. In the case of the assembled main body frame 122 and the assembled loop frame 123, they can be separated into a plurality of horizontal support bases, vertical support bases and connecting sockets, which has the advantage of greatly reducing the volume of the housing package and making delivery, relocation and installation very easy. [Industrial Applicability]

[0136] It can be used in the field of wood drying technology, in which the moisture contained in wood is evaporated to dry it.

Claims

1. A metal plate with projections and recesses that is sandwiched between stacked pieces of wood and has alternating peaks and valleys; A heating cable that generates heat when power is applied; and a plurality of heat transfer pipes, into which the heating cable is sequentially inserted, and which transfer heat generated from the heating cable to the corrugated metal plate while being tightly bonded to the corrugated metal plate between the peaks and valleys of the corrugated metal plate to reinforce the strength of the corrugated metal plate.

2. The uneven metal plate is 2. The heating element for a wood drying apparatus according to claim 1, wherein the upper portions of the peaks and the lower portions of the valleys are flattened so as to ensure a large contact area between adjacent wood pieces stacked vertically.

3. a temperature sensor that detects the temperature of the uneven metal plate by applying power to the heating cable; and 2. The heating element for a wood drying apparatus according to claim 1, further comprising: a controller for cutting off or applying power to the heating cable by comparing the temperature of the uneven metal plate detected by the temperature detection sensor with a preset reference temperature.

4. The heat transfer pipe is 2. The heating element for a wood drying device according to claim 1, wherein the heating element is made of an aluminum material having high thermal conductivity and is not corroded by moisture discharged from the wood dried by the heating cable and water condensed from the moisture.

5. At least one heating element is interposed between adjacent pieces of wood stacked vertically, so that adjacent pieces of wood are supported at a predetermined distance from each other and a space is formed between the pieces of wood stacked vertically, and heat is generated while the adjacent pieces of wood are supported at a predetermined distance from each other and the wood is dried by uniformly transferring heat to the adjacent pieces of wood through heat transfer by heated high-temperature air and direct heat transfer by conduction; and a housing for forming a drying chamber containing at least one heating element interposed between the stacked wood pieces and the adjacent wood pieces; The heating element is A metal plate with projections and recesses that is sandwiched between stacked pieces of wood and has alternating peaks and valleys; A heating cable that generates heat when power is applied; and a plurality of heat transfer pipes, into which the heating cable is sequentially inserted, and which are tightly bonded to the corrugated metal plate between the peaks and valleys of the corrugated metal plate to reinforce the strength of the corrugated metal plate and transfer the heat generated from the heating cable to the corrugated metal plate.

6. The uneven metal plate is 6. The wood drying apparatus according to claim 5, wherein the tops of the peaks and the bottoms of the valleys are flattened so as to ensure a wide contact area between adjacent wood pieces stacked vertically.

7. The heating element is a temperature sensor that detects the temperature of the uneven metal plate by applying power to the heating cable; and 6. The wood drying apparatus of claim 5, further comprising: a control unit that compares the temperature of the uneven metal plate detected by the temperature detection sensor with a preset reference temperature and cuts off or applies power to the heating cable.

8. The heat transfer pipe is 6. The wood drying device according to claim 5, wherein the wood drying device is made of aluminum material having high thermal conductivity and is not corroded by moisture discharged from the wood dried by the heating cable and water condensed from the moisture.

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