Tray-side hot air convection type smart solution-forming electric furnace device and method

Abstract

In order to improve upon the problems associated with conventional aluminum alloy solution treatment devices using electric furnaces—such as poor thermal uniformity resulting in cold and hot spots on the top, bottom, and corners of the aluminum alloy, oxidation of the component surface, or the presence of traces—where the plenum and baffle designs are inadequate and direct airflow is blown directly from the heat source toward the aluminum alloy by fan discharge, causing oxidation and traces on the surface of the part; where the device is configured as a purely batch type, resulting in frequent defects and low production volume due to variations in residence time and temperature history depending on the loading position, load amount, and operator habits; and above all, where the center becomes overcooled or the edges become overheated due to shadow flow, as well as where inadequate insulation and door seals and the absence of exhaust control lead to air leakage and excessive exhaust volume, and where there is significant energy loss due to the constant maximum operation of the fan and heater, the invention comprises an electric furnace main body (100), a lifting and lowering sliding front door section (200), a side wall electric heater bank section (300), a tray side pass-through type hot air convection forming module (400), and a 4-channel By configuring the lifting / lowering lift module (500), the central chamber solution space (600), the 7-channel stackable carrier assembly (700), the floor rail (800), and the smart control unit (900), heat is simultaneously supplied to the front, middle, and rear zones within the internal space of the electric furnace body through the side wall electric heater bank, thereby evenly transmitting hot air convection from the side of the tray to the central chamber solution space, and the temperature difference between the upper and lower trays of the stackable tray can be minimized to ±3~5 °C. Furthermore, by precisely controlling ±1~2 °C through zone division and PID control, the solution conditions for each aluminum alloy plate can be accurately implemented, and a high-quality aluminum alloy plate solution atmosphere can be formed that ensures uniform strength and hardness by heating uniformly from the surface to the interior of the aluminum alloy plate. Additionally, by configuring the tray side pass-through type hot air convection forming module, the central chamber Dispersing discharge across the entire side of the tray of the stacked tray case located in the solution space, and preventing airflow concentration and deviation,A uniform temperature distribution within ±3~5 ℃ is formed across the entire laminated aluminum alloy plate, thereby stabilizing solution treatment quality and improving productivity and energy efficiency by 80% compared to existing standards. With the configuration of a 4-channel lifting / lowering lift module, the first, second, third, and fourth lifting / lowering drive units receive torque simultaneously for 4-point synchronous lifting, allowing the 7-channel laminated carrier assembly to be lifted and lowered without corner sagging or twisting while maintaining its flatness. Furthermore, the 7-channel laminated carrier assembly is lifted and lowered in a completely flat manner via the 4-channel lifting / lowering lift module, and since the gap between the heater and the baffle and the tray side passage are constant, thermal uniformity is improved by 80% compared to existing standards, allowing cold spots at the corners and edges of the aluminum alloy plate to be reduced by less than 40%. Additionally, with the configuration of the 7-channel laminated carrier assembly, the 4-channel bridge grid frame for the 4-channel lifting / lowering lift module By forming the first, second, third, and fourth lifting chains of the lifting / lowering lift module, parallelogram deformation is mechanically suppressed, and the tension of the lifting / lowering chains is averaged at the bridge, thereby reducing the left-right, front-back, and height difference to ≤ ±1.0 mm and improving vibration by 80% compared to the conventional system. Furthermore, by parallelizing input, stacking, heating, and discharge in units of width × layer, the throughput per unit cycle is improved by 5 to 20 times relative to the size of the electric furnace. Additionally, the ladder-level structure geometrically fixes the spacing (pitch) of aluminum alloy plates, ensuring that the convection passages on both sides of each plate are always identical. Consequently, the hot air dispersed from the tray-side passing type hot air convection forming module uniformly penetrates the 7-channel stacked carrier assembly, resulting in an inter-channel air velocity deviation within ±10% and a full-loading thermal uniformity of ±3 to 5 °C (520 to 550°C), thereby improving the surface quality of the aluminum alloy plates compared to the conventional system. It can be improved by 1.5 to 3 times, and with the configuration of a smart control unit, the next zone heater and fan can be preheated or output reduced based on the load and temperature (previous zone log) to be introduced in the next pitch,The purpose is to provide a tray-side hot air convection type smart solution furnace device and method that eliminates temperature step phenomena at the boundaries of the front, middle, and rear zones and maintains a uniform solution atmosphere; automatically adjusts each fan VFD and baffle opening ratio by sensing ΔP and hot air velocity per channel to eliminate cold spots at the corners and edges of aluminum alloy plates and maintains full-surface flow on the side of the tray to produce high-quality solution-treated aluminum alloy plates; and maintains thermal uniformity of ±3~5 °C and low overshoot even in a closed-loop pitch-forward process, and improves energy reduction and quality dispersion by 80% compared to conventional methods, by integrating event synchronization, load adaptation, and flow balancing into a closed loop control.

Description

Technology Field

[0001] The present invention relates to a smart solution treatment electric furnace device and method of tray-side hot air convection type, which is applied to aluminum alloy fields, new materials and metal fields, energy and electrical and electronic industries, bulletproof plates, military vehicles, aerospace components, semiconductors, and secondary batteries. More specifically, it involves stacking aluminum alloy plates one by one to form a stacked structure, closing the door to seal it, forming tray-side hot air convection on the side of the stacked aluminum alloy plates, performing solution treatment on the top, bottom, left, right, rear, and front surfaces of the stacked aluminum alloy plates at a temperature of 520 to 550°C, and, once the solution treatment is completed, lowering them one step at a time to output them one by one along a floor rail. Background Technology

[0003] Aluminum and aluminum alloys are lightweight (specific gravity 2.7) and have good corrosion resistance. Depending on the material, they are high-strength metals comparable to steel and are widely used in industries such as automobiles, aircraft, electrical and electronic manufacturing equipment, semiconductors, and secondary batteries. Recently, as displays such as LCDs and PDPs have become larger, there is a demand for aluminum plates, which are used in large quantities in the equipment for producing them, to have larger and thicker plate shapes and high mechanical properties.

[0004] Unlike steel, heat-treatable aluminum alloy plates have the characteristic of reaching 60-70% of the target strength after solution treatment, which involves heating and rapid cooling, and reaching the target strength only after undergoing age hardening treatment, which involves maintaining a low temperature for an appropriate amount of time.

[0005] Recently, there is a device that performs solution treatment on aluminum alloys using an electric furnace.

[0006] An electric furnace is a device that creates a high-temperature environment using electricity as a heat source, and it operates in the form of an electric arc furnace, electric resistance furnace, or induction heating furnace.

[0007] However, in the case of the conventional aluminum alloy solution treatment device using an electric furnace, the plenum and baffle design were inadequate, and direct airflow was blown from the heat source directly toward the aluminum alloy by fan discharge, resulting in poor thermal uniformity, which caused cold and hot spots to form on the top, bottom, and corners of the aluminum alloy, and caused the surface of the part to oxidize or leave traces.

[0008] In addition, as it is configured as a pure batch type, the residence time and temperature history vary depending on the loading position, load amount, and operator habits, resulting in frequent defects and low production volume. Above all, problems occurred where the center was overcooled or the edges were overheated due to shadow flow.

[0009] In addition, there were problems such as inadequate insulation and door seals, lack of exhaust control, resulting in air leakage and excessive exhaust volume, and high energy loss due to constant maximum operation of the fan and heater. Prior art literature

[0011] Korean Registered Patent Publication No. 10-1780430 The problem to be solved

[0012] To solve the above problems, the present invention supplies heat simultaneously to the front, middle, and rear zones within the internal space of the electric furnace body through the side wall electric heater bank section, thereby evenly transmitting hot air convection along the tray sides to the central chamber solution space section. By configuring a tray side pass-through type hot air convection forming module, the heat is dispersed and discharged across the entire side of the stacked tray case located in the central chamber solution space section, preventing airflow concentration and deviation, and thereby forming a uniform temperature distribution within ±3~5 ℃ across the entire stacked aluminum alloy plate material. Furthermore, by configuring a 4-channel lifting module, the first, second, third, and fourth lifting drive sections receive torque simultaneously to move in a 4-point synchronous lifting motion, thereby lifting and lowering the 7-channel stacked carrier assembly section while maintaining its flatness without corner sagging or twisting, and the 7-channel stacked carrier The purpose is to provide a tray-side hot air convection type smart solution furnace device and method that can form an assembly section so that the ladder-step structure geometrically fixes the spacing (pitch) of aluminum alloy plates, ensuring that the convection passages on both sides of each plate are always the same, so that the hot air dispersed from the tray-side pass-type hot air convection forming module uniformly penetrates the 7-channel stacked carrier assembly section, thereby enabling the formation of a channel-to-channel wind speed deviation within ±10% and full-loading heat uniformity of ±3~5 °C (520~550℃), and can form a smart control section so that the next zone heater and fan can be preheated or output reduced based on the load amount and temperature (previous zone log) to be introduced in the next pitch, thereby eliminating the temperature step phenomenon at the boundaries of the front zone, middle zone, and back zone, and maintaining a uniform solution atmosphere. means of solving the problem

[0014] To achieve the above objective, the tray-side hot air convection type smart solution electric furnace device according to the present invention

[0015] This is achieved by configuring the aluminum alloy plates to be stacked one by one to form a laminated structure, closing the door to seal it, forming a tray side hot air convection on the side of the laminated aluminum alloy plates, and performing solution treatment at a temperature of 520~550℃ on the top, bottom, left, right, rear, and front surfaces of the laminated aluminum alloy plates, and once the solution treatment is completed, lowering them one step at a time to output them one by one along the bottom rail.

[0017] The above tray-side hot air convection type smart solution furnace device is, more specifically,

[0018] An electric furnace body (100) formed in a rectangular box shape to protect and support each device from external pressure, and

[0019] A vertical sliding front door section (200) located on one side of the front of the electric furnace body, which performs the function of a door by sliding up and down with the force of an air cylinder, and

[0020] When viewed from the front, a side wall electric heater bank (300) is located on the inner wall of the internal space of the electric furnace body and is formed with a 4-channel (=4) structure to generate heat of 520~550℃ toward the tray side pass-through type hot air convection forming module, and

[0021] A tray side-passing type hot air convection forming module (400) that forms a convection that causes clockwise hot air to pass from the side wall electric heater bank section within the internal space of the electric furnace body, through the top, toward the side of the tray of a stacked tray case located in the central chamber solution space, and

[0022] A 4-channel lifting / lowering lift module (500) located on one side of the upper outer side of the electric furnace body, which generates a 4-channel lifting / lowering force and transmits it to the 7-channel stacked carrier assembly, and

[0023] A central chamber solution space (600) formed along the longitudinal direction in the central part of the internal space of the electric furnace body, including a stacked tray case, and forming a solution atmosphere over the entire aluminum alloy plate formed stacked in the stacked tray case, and

[0024] A 7-channel stacked carrier assembly (700) that, when viewed from the perspective of the lifting / lowering sliding front door on the central chamber solution space, a horizontal bar is connected between the two vertical chains to form a ladder step structure, and the ladder step structure is formed into 7 channels (=7 pieces), receives lifting force from a 4-channel lifting / lowering lift module to receive aluminum alloy plates and raises them one step at a time to form a stacked structure, and when solution is completed, receives lifting force from the 4-channel lifting / lowering lift module to lower the stacked aluminum alloy plates one step at a time, and

[0025] A bottom rail section (800) in which a plurality of rollers are formed in a rail structure on one side of the bottom of the central chamber solution space to generate a forward output force and output an aluminum alloy plate, which has been lowered step by step through a 7-channel stacked carrier assembly, outwardly, and

[0026] It is characterized by being composed of a smart control unit (900) that controls the overall operation of each device by stacking aluminum alloy plates one by one to form a stacked structure, closing the door to seal it, forming a tray side hot air convection module, a 4-channel lifting module, a central chamber solution treatment space, a 7-channel stacked carrier assembly, and a floor rail, and then forming a tray side hot air convection on the side of the stacked aluminum alloy plates to perform solution treatment on the upper surface, lower surface, left side, right side, rear surface, and front surface of the stacked aluminum alloy plates at a temperature of 520~550℃, and controlling the output one by one along the floor rail by lowering them step by step once the solution treatment is completed. Effects of the invention

[0028] As explained above, in the present invention

[0030] First, through the side wall electric heater bank section, heat is simultaneously supplied to the front, middle, and rear zones within the internal space of the electric furnace body, thereby evenly transmitting hot air convection from the side of the tray to the central chamber solution space section, and the temperature difference between the upper and lower trays of the stacked tray can be minimized to ±3~5 °C. Furthermore, by precisely controlling ±1~2 °C through zone division and PID control, the solution conditions for each aluminum alloy plate can be accurately implemented, and a high-quality aluminum alloy plate solution atmosphere can be formed that ensures uniform strength and hardness by heating uniformly from the surface to the interior of the aluminum alloy plate.

[0032] Second, by configuring a tray side-passing hot air convection forming module, the hot air is dispersed and discharged across the entire side of the tray of the stacked tray case located in the central chamber solution space, preventing airflow concentration and deviation, thereby forming a uniform temperature distribution within ±3 to 5 ℃ across the entire stacked aluminum alloy plate, which stabilizes the solution quality and can improve productivity and energy efficiency by 80% compared to the existing method.

[0034] Third, by configuring a 4-channel lifting and lowering lift module, the first lifting and lowering drive unit, the second lifting and lowering drive unit, the third lifting and lowering drive unit, and the fourth lifting and lowering drive unit move simultaneously by receiving torque, thereby enabling 4-point synchronous lifting. This allows the 7-channel stacked carrier assembly to be lifted and lowered while maintaining a flat plane without corner sagging or twisting. Furthermore, through the 4-channel lifting and lowering lift module, the 7-channel stacked carrier assembly is lifted and lowered in a completely flat plane. Since the gap between the heater and the baffle and the tray side passage are constant, the thermal uniformity is improved by 80% compared to the conventional method, and the cold spots at the corners and edges of the aluminum alloy plate can be reduced to 40% or less.

[0036] Fourth, by configuring a 7-channel stackable carrier assembly, the first, second, third, and fourth lifting chains of the 4-channel lifting module are formed on the bridge grid frame for the 4-channel lifting module. This mechanically suppresses parallelogram deformation and averages the lifting chain tension at the bridge, thereby reducing the left-right, front-back, and height difference to ≤ ±1.0 mm and improving vibration by 80% compared to the conventional system. Furthermore, by parallelizing input, stacking, heating, and discharge in units of width × layer, the throughput per unit cycle is improved by 5 to 20 times relative to the size of the electric furnace. Additionally, the ladder-like structure geometrically fixes the spacing (pitch) of the aluminum alloy plates, ensuring that the convection passages on both sides of each plate are always identical. Consequently, the hot air dispersed from the tray-side passing type hot air convection forming module uniformly penetrates the 7-channel stackable carrier assembly, resulting in a wind speed deviation between channels within ±10% and full-loading thermal uniformity. By setting the temperature to ±3~5 °C (520~550℃), the surface quality of the aluminum alloy sheet can be improved by 1.5 to 3 times compared to the existing one.

[0038] Fifth, by configuring a smart control unit, the next zone heater and fan can be preheated or output reduced based on the load and temperature (previous zone log) to be introduced in the next pitch, thereby eliminating the temperature step phenomenon at the boundaries of the front, middle, and rear zones and maintaining a uniform aging atmosphere. By sensing the ΔP and hot air speed per channel and automatically adjusting the fan VFD and baffle opening ratio, cold spots at the corners and edges of the aluminum alloy sheet can be eliminated, and the flow from the front of the tray side can be maintained to produce high-quality solution-treated aluminum alloy sheet. Furthermore, by integrating event synchronization, load adaptation, and flow rate balancing into a closed loop, a thermal uniformity of ±3 to 5 °C and low overshoot can be maintained even in a closed-state pitch-forward process, and energy reduction and quality dispersion can be improved by 80% compared to the conventional method. Brief explanation of the drawing

[0040] FIG. 1 is a block diagram illustrating the components of a tray-side hot air convection type smart solution furnace device (1) according to the present invention. FIG. 2 is a perspective view illustrating the components of a tray side hot air convection type smart solution furnace device (1) according to the present invention. FIG. 3 is a block diagram illustrating the components of a lifting and lowering sliding front door unit according to the present invention, FIG. 4 is a perspective view illustrating the components of a lifting and lowering sliding front door unit according to the present invention. FIG. 5 is a block diagram illustrating the components of a sidewall electric heater bank section according to the present invention, FIG. 6 is a perspective view illustrating the components of a sidewall electric heater bank portion according to the present invention. FIG. 7 is a block diagram illustrating the components of a tray side-passing type hot air convection forming module according to the present invention, FIG. 8 is an exemplary embodiment illustrating the components of a tray-side passing type hot air convection forming module according to the present invention. FIG. 9 is an embodiment illustrating a clockwise convection structure in which hot air passes over the entire side of the tray through a tray side-passing hot air convection forming module according to the present invention. FIG. 10 is a block diagram illustrating the components of a 4-channel lifting / lowering lift module according to the present invention. FIG. 11 is a cross-sectional view illustrating the components of a 4-channel lifting / lowering lift module according to the present invention. FIG. 12 is a side cross-sectional view illustrating the components of a 4-channel lifting / lowering lift module according to the present invention. FIG. 13 is a block diagram illustrating the components of a third lifting / lowering drive unit according to the present invention, FIG. 14 is a block diagram illustrating the components of a fourth lifting / lowering drive unit according to the present invention, FIG. 15 is an exemplary embodiment illustrating the components of the central chamber solution space according to the present invention. FIG. 16 is an embodiment illustrating an aluminum alloy plate supported by a 7-channel stacked carrier assembly according to the present invention, divided into 7 equal parts, and showing the positions of the 7 division points. FIG. 17 is a block diagram illustrating the components of a 7-channel stacked carrier assembly according to the present invention. FIG. 18 is a perspective view illustrating the components of a 7-channel stacked carrier assembly according to the present invention. FIG. 19 is an embodiment illustrating the components of the first, second, third, fourth, fifth, sixth, and seventh ladder-shaped stacked carrier sections according to the present invention. FIG. 20 is an embodiment illustrating the position of an aluminum alloy plate through the first, second, third, fourth, fifth, sixth, and seventh ladder-shaped stacked carrier parts according to the present invention. FIG. 21 is a block diagram illustrating the components of a floor rail portion according to the present invention, FIG. 22 is a side cross-sectional view illustrating the components of a floor rail portion according to the present invention, FIG. 23 is a circuit diagram illustrating the components of a smart control unit according to the present invention, FIG. 24 is an exemplary diagram illustrating the overall operation process of a tray-side hot air convection type smart solution furnace device according to the present invention. FIG. 25 is an embodiment illustrating the formation of a solution treatment atmosphere over an entire aluminum alloy plate formed in a stacked manner in a 7-channel stacked carrier assembly through a central chamber solution treatment space in a tray-side hot air convection type smart solution treatment electric furnace device according to the present invention. FIG. 26 is an embodiment illustrating the lifting and lowering sliding rear door portion of a side-side hot air convection type smart solution furnace device according to the present invention, in an open state, lowering aluminum alloy plates that have completed solution treatment one step at a time from a 7-channel stacked carrier assembly portion and outputting them one by one to an external cooling process along a bottom rail portion. FIG. 27 is a flowchart illustrating a tray-side hot air convection type smart solution furnace method according to the present invention. FIG. 28 is a flowchart illustrating a specific process of generating a lifting and lowering force of a 4-channel structure through a 4-channel lifting and lowering lift module according to the present invention and transmitting it to a 7-channel stacked carrier assembly. FIG. 29 is a flowchart illustrating a specific process of receiving a lifting force from a 4-channel lifting / lowering lift module through a 7-channel stackable carrier assembly according to the present invention, receiving an aluminum alloy plate, and lifting it step by step to form a stackable structure. FIG. 30 is a flowchart illustrating a specific process of generating heat of 520~550 ℃ through a tray side-passing type hot air convection forming module via a side wall electric heater bank section while the lifting / lowering sliding front door section according to the present invention is lowered and slid to a sealed state. FIG. 31 is a flowchart illustrating a specific process for forming a convection by causing a clockwise hot air to pass through the side wall electric heater bank section of the internal space of the electric furnace body, through the tray side passing type hot air convection forming module according to the present invention, and passing the top of the side wall electric heater bank section of the internal space of the electric furnace body, toward the tray side of the 7-channel stacked carrier assembly section located in the central chamber solution space section. Specific details for implementing the invention

[0042] Hereinafter, preferred embodiments according to the present invention will be described with reference to the accompanying drawings.

[0043] FIG. 1 is a block diagram illustrating the components of a tray-side hot air convection type smart solution furnace device (1) according to the present invention, and FIG. 2 is a perspective view illustrating the components of a tray-side hot air convection type smart solution furnace device (1) according to the present invention. This is configured to form a stacked structure by stacking aluminum alloy plates one by one, sealing the door, and then forming a tray-side hot air convection on the side of the stacked aluminum alloy plates, thereby performing solution treatment at a temperature of 520~550℃ on the upper surface, lower surface, left side, right side, rear surface, and front surface of the stacked aluminum alloy plates, and when the solution treatment is completed, to lower them one step at a time and output them one by one along the bottom rail.

[0045] More specifically, the above-described tray side hot air convection type smart solution electric furnace device (1) is composed of an electric furnace body (100), a lifting / lowering sliding front door section (200), a side wall electric heater bank section (300), a tray side passing type hot air convection forming module (400), a 4-channel lifting / lowering lift module (500), a central chamber solution space section (600), a 7-channel stacked carrier assembly section (700), a floor rail section (800), and a smart control section (900).

[0047] First, the electric furnace body (100) according to the present invention will be described.

[0048] The above electric furnace body (100) is formed in a rectangular box shape and serves to protect and support each device from external pressure.

[0049] As illustrated in FIG. 2, a sliding front door section for lifting and lowering is formed on one side of the front where an aluminum alloy plate is inserted, and the internal space is composed of a double internal space. When viewed from the front, a side wall electric heater bank section is formed on one side of the inner wall of the internal space of the electric furnace body, and a tray side-passing hot air convection forming module is formed on the side of the tray of the 7-channel stacked carrier assembly section located in the central chamber solution space section, passing through the top of the side wall electric heater bank section in the internal space of the electric furnace body. A 4-channel lifting and lowering lift module is formed on one side of the top in the outer direction of the electric furnace body, and a central chamber solution space section is formed along the longitudinal direction in the central part of the internal space of the electric furnace body. A 7-channel stacked carrier assembly section is formed on the central chamber solution space section, and a floor rail section is formed on one side of the bottom of the central chamber solution space section.

[0050] In addition, a smart control unit is formed and configured on one side of the outer side.

[0051] In addition, a lifting and lowering sliding rear door section is formed on one side of the rear where the aluminum alloy plate is discharged, based on the same principle as the lifting and lowering sliding front door section.

[0053] The lifting and lowering sliding rear door portion according to the present invention performs the function of an outlet on one side of the rear.

[0054] In addition, the lifting and lowering sliding rear door section configured on one side of the rear is formed at 50% to 70% of the opening and closing height of the lifting and lowering sliding front door section, and while opened and closed by the force of an air cylinder, the aluminum alloy plate, which is lowered step by step through the 7-channel stacked carrier assembly section, is output to the outside through the bottom rail section.

[0056] Next, the lifting and lowering sliding front door part (200) according to the present invention will be described.

[0057] The above-mentioned vertical sliding front door section (200) is located on one side of the front of the electric furnace body and functions as a door by sliding vertically with the force of an air cylinder.

[0058] As shown in FIGS. 3 and 4, this consists of a door panel (210), an air cylinder type lifting / lowering sliding part (220), and a side guide rail part (230).

[0060] First, a door panel (210) according to the present invention will be described.

[0061] The above door panel (210) is formed in a rectangular shape and receives a lifting and lowering sliding force from an air cylinder-type lifting and lowering sliding part, and performs the function of opening or closing relative to the electric furnace body while sliding up and down.

[0062] Since the inner side is directly exposed to high temperatures, it is composed of refractory bricks, ceramic boards, and a ceramic fiber lining; the outer side is composed of a steel frame (SS400, SUS304) for structural strength; and the intermediate section between the inner and outer sides is filled with insulating material made of ceramic fiber blocks.

[0063] As a result, mechanical strength is secured while maintaining a high temperature inside and a low temperature outside.

[0065] In addition, an expanded graphite seal or a ceramic rope seal is formed on the outer edge of the door panel to prevent heat and gas leakage.

[0067] Second, the air cylinder type lifting and lowering sliding part (220) according to the present invention will be described.

[0068] The above air cylinder type lifting / lowering sliding part (220) has an air cylinder formed in a twin structure on one side of the door panel, and generates the force of the air cylinder to lift / lower and slide, and transmits it toward the door panel.

[0069] This is driven according to the control signal of the smart control unit.

[0071] Third, the side guide rail portion (230) according to the present invention will be described.

[0072] The above-mentioned side guide rail (230) is located on one side of the door panel and serves to guide the up and down along the side line.

[0073] This precisely guides the linear movement of the door panel up and down and prevents shaking and twisting.

[0075] Thus, by configuring the lifting and lowering sliding front door section consisting of a door panel, an air cylinder type lifting and lowering sliding section, and a side guide rail section, external leakage from high-temperature gas is prevented, the internal temperature is maintained uniformly, and heat loss can be reduced to 40% or less compared to conventional methods through an expanded graphite seal or a ceramic rope seal. Furthermore, since it is formed with a lifting and lowering sliding structure, the opening is wide and accessibility is good, allowing for the lamination of square aluminum alloy panels.

[0077] Next, the side wall electric heater bank section (300) according to the present invention will be described.

[0078] The above-mentioned side wall electric heater bank (300) is located on the inner wall of the internal space of the electric furnace body when viewed from the front direction and serves to generate heat of 520~550 ℃ through a tray side-passing hot air convection forming module.

[0079] As shown in FIGS. 5 and 6, this consists of a front zone electric heater section (310), a middle zone electric heater section (320), and a rear zone electric heater section (330).

[0081] The above-mentioned front zone electric heater unit (310) is located on one side of the front zone side wall of the central chamber solution space within the internal space of the electric furnace body, and serves to supply a heat source of 520 to 550°C to the tray side-passing hot air convection forming module.

[0082] Here, the "front zone side walls" refer to the side walls of the front zone formed at the starting point of the internal space of the electric furnace body. When viewed from the front, the front zone electric heater section is formed in a twin structure.

[0083] In addition, supplying a heat source of 520 to 550°C to the tray side-pass type hot air convection forming module means that the internal space of the electric furnace body itself is formed as a double internal space, so the electric heater in the front zone does not supply the heat source directly to the central chamber solution space, but rather supplies the heat source to the plenum space of the tray side-pass type hot air convection forming module as shown in FIG. 6.

[0084] This is composed of a heater element formed by selecting one of a cartridge type, tube type, or coil type, made of a NiCr (nickel-chromium alloy) or FeCrAl (iron-chromium-aluminum alloy) alloy, and a heater support fixed by a ceramic insulator is configured, a heater wiring is connected to one side, and a power supply port is formed in the heater wiring.

[0086] The above-mentioned middle zone electric heater section (320) is located on one side of the middle zone side wall of the central chamber solution space within the internal space of the electric furnace body, and serves to supply a heat source of 520 to 550°C to the tray side-passing hot air convection forming module.

[0087] Here, the term "middle zone side wall" refers to the side walls of the middle zone formed in the central part of the internal space of the electric cell body. When viewed from the front, the middle zone electric heater section is formed in a twin structure. In the present invention, it consists of two electric heater sections.

[0088] This is composed of a heater element formed by selecting one of a cartridge type, tube type, or coil type, made of a NiCr (nickel-chromium alloy) or FeCrAl (iron-chromium-aluminum alloy) alloy, and a heater support fixed by a ceramic insulator is configured, a heater wiring is connected to one side, and a power supply port is formed in the heater wiring.

[0090] The above-mentioned rear zone electric heater section (330) is located on one side of the rear zone side wall of the central chamber solution space within the internal space of the electric furnace body, and serves to supply a heat source of 520 to 550°C to the tray side-passing hot air convection forming module.

[0091] Here, the rear zone side wall refers to the side walls of the rear zone formed at the rear discharge portion of the internal space of the electric foam body. When viewed from the front, the rear zone electric heater section is formed in a twin structure.

[0092] This is composed of a heater element formed by selecting one of a cartridge type, tube type, or coil type, made of a NiCr (nickel-chromium alloy) or FeCrAl (iron-chromium-aluminum alloy) alloy, and a heater support fixed by a ceramic insulator is configured, a heater wiring is connected to one side, and a power supply port is formed in the heater wiring.

[0094] In this way, by configuring a side wall electric heater bank consisting of a front zone electric heater section, a middle zone electric heater section, and a rear zone electric heater section, heat is simultaneously supplied to the front zone, middle zone, and rear zone within the internal space of the electric furnace body, thereby evenly delivering convective hot air to the central chamber solution space section, and the temperature difference between the upper and lower trays of the stacked tray can be minimized to ±3~5 °C. Furthermore, by precisely controlling ±1~2 °C through zone division and PID control, the solution conditions for each aluminum alloy plate (e.g., 6061-T6: 520~550℃, 3~8h) can be accurately realized, and high-quality aluminum alloy plates can be solution heated uniformly from the surface to the interior, thereby ensuring uniform strength and hardness.

[0096] Next, a tray side-passing type hot air convection forming module (400) according to the present invention will be described.

[0097] The above tray side-passing hot air convection forming module (400) serves to form a convection that causes hot air to pass clockwise from the side wall electric heater bank section within the internal space of the electric furnace body, through the top, toward the tray side of the 7-channel stacked carrier assembly section located in the central chamber solution space.

[0098] As shown in FIGS. 7 and 8, this consists of a 4-channel circulation fan section (410), a ducted air passage section (420), a plenum space section (430), and a side air guide section (440).

[0100] First, the 4-channel circulation fan unit (410) according to the present invention will be described.

[0101] The above 4-channel circulation fan unit (410) is located on one side of the upper outer side of the electric furnace body and is formed with a 4-channel (=4) structure, and plays the role of drawing in hot air from inside and, by the force of the suction, forming an atmosphere that forces the hot air, which is the internal air of the electric furnace body, to convect in a clockwise direction. Here, forming an atmosphere that forces the hot air, which is the internal air, to convect in a clockwise direction means that by drawing in the hot air, which is the internal hot air, with the force of suction, the hot air is formed upward, and when the suction force stops, the hot air flows through the duct-type air passage and the plenum space to form a clockwise forced convection atmosphere toward the side air guide.

[0102] As shown in FIG. 8, this consists of a circulation fan (411) and a circulation motor (412).

[0103] In addition, depending on the purpose and form, it is configured to be selected as 3 channels (3 units), 5 channels (5 units), or 7 channels (7 units) in addition to 4 channels (4 units).

[0104] That is, by creating a clockwise forced convection atmosphere, the heat transfer coefficient is improved by 5 to 10 times compared to natural convection, the temperature difference between the upper and lower parts of the stacked tray and the center is minimized (±3 to 5 ℃), hot air is evenly supplied to the front, middle, and rear zones within the internal space of the electric furnace body, and thanks to the multi-channel fan structure, it is possible to prevent deviations where only specific sections become overheated or underheated.

[0106] In this way, the forced convection structure of the hot air through the 4-channel circulation fan is formed as a clockwise convection structure, thereby creating a uniform temperature distribution within ±3 to 5 ℃ throughout the entire aluminum alloy plate formed in a stacked manner.

[0108] Second, the duct-type air passage section (420) according to the present invention will be described.

[0109] The above-mentioned duct-type air passage (420) is located on one side of the output end of the 4-channel circulation fan and serves to guide hot internal air to flow toward the plenum space along the clockwise forced convection atmosphere generated from the 4-channel circulation fan.

[0110] This is constructed as a sealed structure with insulation.

[0112] Third, the plenum space (430) according to the present invention will be described.

[0113] The above plenum space (430) is formed in a structure that surrounds the central chamber solution space of the internal space when viewed from the front, and receives hot air in a clockwise forced convection atmosphere through a duct-type air passage, temporarily collects it, and transmits it to the side air guide.

[0114] This is configured to form a uniform hot air distribution through positive pressure equalization of the plenum.

[0115] In addition, it is configured to supply a constant flow rate to the side air guide section using the internal pressure difference of the plenum.

[0116] In this way, through the plenum space according to the present invention, hot air of the same flow rate and temperature can be formed across the entire side of the tray of the stacked tray case.

[0118] Fourth, the side air guide part (440) according to the present invention will be described.

[0119] The above-mentioned side air guide (440) is located on one side of both sides of the central chamber solution space of the internal space and serves to disperse and discharge hot air collected in the plenum space through a plurality of side air discharge holes to the entire side of the tray of the stacked tray case located in the central chamber solution space.

[0120] As shown in FIG. 8, a side air discharge hole (441) with a 40mm gap is formed, and a curved air guide bar (442) is formed on one side of the side air discharge hole.

[0121] In addition, the size, spacing, and arrangement of the side air exhaust holes are designed according to the purpose of use and form to control the flow velocity and direction of the hot air.

[0122] In the present invention, the spacing between the horizontal bars is formed to be 40 mm, and the side air discharge holes are also formed to be 40 mm, thereby creating convection that allows hot air to pass uniformly over the entire side of the tray.

[0124] Through the tray side-passing hot air convection forming module according to the present invention, the convection that allows hot air to pass over the entire side of the tray is formed by a clockwise convection structure (400a).

[0125] Here, the clockwise convection structure (400a) refers to a clockwise forced convection atmosphere structure in which, as shown in FIG. 9, when the suction force of the 4-channel circulation fan section is generated, the hot air generated in the left space of the plenum space section is directed upward, then passes through the duct-type air passage section, flows into the right space of the plenum space section, and flows toward the side air guide section located on the right side of the 7-channel stacked carrier assembly section.

[0127] Thus, by configuring a tray side-passing hot air convection forming module consisting of a 4-channel circulation fan section, a duct-type air passage section, a plenum space section, and a side air guide section, the hot air is dispersed and discharged across the entire side of the tray of the stacked tray case located in the central chamber solution space section, preventing airflow concentration and deviation, thereby forming a uniform temperature distribution within ±3~5 ℃ across the entire stacked aluminum alloy plate, and as a result, the solution quality is stabilized, and productivity and energy efficiency can be improved by 80% compared to the existing method.

[0129] Next, a 4-channel lifting / lowering lift module (500) according to the present invention will be described.

[0130] The above 4-channel lifting / lowering lift module (500) is located on one side of the upper outer direction of the electric furnace body and generates a lifting / lowering force of a 4-channel structure and transmits it to the 7-channel stacked carrier assembly.

[0131] As illustrated in FIGS. 10 and 11, this consists of a main rotary motor (510) for a lift, a reduction gear (520) for a lift, a rotary joint bracket (530), a first lift drive unit (540), a second lift drive unit (550), a third lift drive unit (560), and a fourth lift drive unit (570).

[0133] First, the main rotary motor (510) for the lifting lift according to the present invention will be described.

[0134] The main rotary motor (510) for the above-mentioned lifting lift is located on one side of the upper outer direction of the electric furnace body and generates rotational force and transmits it to the reduction gear for the lifting lift.

[0136] Second, a reduction gear (520) for a lifting lift according to the present invention will be described.

[0137] The above-mentioned reduction gear (520) for the lifting / lowering lift converts the rotational force received from the main rotating motor for lifting / lowering sliding into low speed and high torque, and transmits it to the rotating joint bracket.

[0138] This is formed on one side of the output end with a low-speed, high-torque chain belt (521) connected to the rotating gear of the rotating joint bracket.

[0139] Here, the low-speed, high-torque chain belt receives low-speed, high-torque power from the reduction gear for the lifting lift and transmits it to the rotating joint bracket.

[0141] Third, the rotating joint bracket part (530) according to the present invention will be described.

[0142] The above-mentioned rotating joint bracket (530) receives low-speed, high-torque power from a reduction gear for a lifting lift and simultaneously transmits it to the gear-coupled first lifting drive unit and second lifting drive unit.

[0143] As shown in FIG. 11, this is configured such that a rotating gear (531) is formed on one side of a longitudinal rod structure body that contacts a low-speed, high-torque chain belt, a bevel gear (532) for transmitting a first lifting / lowering drive unit is formed on one side of the rotating gear, and a bevel gear (533) for transmitting a second lifting / lowering drive unit is formed on the other side of the rotating gear.

[0145] Fourth, the first lifting / lowering drive unit (540) according to the present invention will be described.

[0146] The above-mentioned first lifting / lowering drive unit (540) is located on the left side of the front end when the electric furnace body is viewed in a plan view, and is connected to the left side of the front end of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly, and serves to transmit lifting / lowering force to the left side of the front end of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly.

[0147] As shown in FIGS. 11 and 12, this consists of a first bevel gear (541), a first chain sprocket (542), a left power transmission rod (543), a first weight (544), and a first lifting / lowering chain (545).

[0149] The first bevel gear (541) is connected to the first bevel gear for transmitting the lifting / lowering drive unit of the rotating joint bracket part, and receives rotational force from the first bevel gear for transmitting the lifting / lowering drive unit and transmits it to the first chain sprocket.

[0151] The first chain sprocket (542) is positioned on one side of the first bevel gear and receives rotational force from the first bevel gear, rotates, rotates the left power transmission rod, and serves to transmit the lifting and lowering force to the first lifting and lowering chain.

[0153] The above-mentioned left power transmission rod (543) is located on one side of the rear end of the first chain sprocket and connects the first chain sprocket and the third chain sprocket, and serves to receive rotational force from the first chain sprocket and transmit it to the third chain sprocket.

[0154] This is located between the first chain sprocket and the third chain sprocket and is configured with a structure that connects the first chain sprocket and the third chain sprocket as a single unit.

[0156] The first weight (544) is positioned on the left side of the first chain sprocket when viewed from the front, and serves to assist the downward sliding force applied to the first lifting / lowering chain to slide slowly, or to assist the upward sliding force applied to the first lifting / lowering chain to slide accelerated by the weight of the weight.

[0158] The first lifting / lowering chain (545) is located on the right side of the first chain sprocket when viewed from the front direction and is connected to the left side of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly, and receives the lifting / lowering sliding force from the first chain sprocket and serves to transmit the lifting / lowering force to the left side of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly.

[0160] Fifth, the second lifting / lowering drive unit (550) according to the present invention will be described.

[0161] The above second lifting / lowering drive unit (550) is located on the front right side when the electric furnace body is viewed in a plan view, and is connected to the front right side of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly, and serves to transmit lifting / lowering force to the front right side of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly.

[0162] As shown in FIGS. 11 and 12, this consists of a second bevel gear (551), a second chain sprocket (552), a right power transmission rod (553), a second weight (554), and a second lifting / lowering chain (555).

[0164] The second bevel gear (551) is connected to the second bevel gear for transmitting the second lifting / lowering drive unit of the rotating joint bracket part, and receives rotational force from the second bevel gear for transmitting the second lifting / lowering drive unit and transmits it to the second chain sprocket.

[0166] The second chain sprocket (552) is located on one side of the second bevel gear and receives rotational force from the second bevel gear and rotates, thereby rotating the right power transmission rod and transmitting the lifting and lowering force to the second lifting and lowering chain.

[0168] The above right power transmission rod (553) is located on one side of the rear end of the second chain sprocket and connects the second chain sprocket and the fourth chain sprocket, and serves to receive rotational force from the second chain sprocket and transmit it to the fourth chain sprocket.

[0169] This is located between the second chain sprocket and the fourth chain sprocket, and is configured with a structure that connects the second chain sprocket and the fourth chain sprocket as a single unit.

[0171] The second weight (554) is positioned on the right side of the second chain sprocket when viewed from the front, and serves to assist the downward sliding force applied to the second lifting / lowering chain to slide slowly, or to assist the upward sliding force applied to the second lifting / lowering chain to slide accelerated by the weight of the weight.

[0173] The second lifting / lowering chain (555) is located on the left side of the second chain sprocket when viewed from the front direction and is connected to the right side of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly, and receives the lifting / lowering sliding force from the second chain sprocket and serves to transmit the lifting / lowering force to the right side of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly.

[0175] Sixth, the third lifting / lowering drive unit (560) according to the present invention will be described.

[0176] The above third lifting / lowering drive unit (560) is located on the left side of the rear end when the electric furnace body is viewed in a plan view, and is connected to the left side of the rear end near the corner of the upper frame of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly, and serves to transmit lifting / lowering force to the left side of the rear end near the corner of the upper frame of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly.

[0177] As shown in FIG. 13, this consists of a third chain sprocket (561), a third weight (562), and a third lifting / lowering chain (563).

[0179] The above third chain sprocket (561) is located on one side opposite the first chain sprocket and receives rotational force from the left power transmission rod of the first lifting / lowering drive unit, rotates, and serves to transmit lifting / lowering force to the third lifting / lowering chain.

[0181] The third weight (562) is positioned on the right side of the third chain sprocket when viewed from the front, and serves to assist the downward sliding force applied to the third lifting / lowering chain to slide slowly, or to assist the upward sliding force applied to the third lifting / lowering chain to slide accelerated by the weight of the weight.

[0183] The third lifting / lowering chain (563) is located on the left side of the third chain sprocket when viewed from the front direction and is connected to the left side of the rear end of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly, and receives the lifting / lowering sliding force from the third chain sprocket and serves to transmit the lifting / lowering force to the left side of the rear end of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly.

[0185] Seventh, the fourth lifting / lowering drive unit (570) according to the present invention will be described.

[0186] The above-mentioned fourth lifting / lowering drive unit (570) is located on the right side of the rear end when the electric furnace body is viewed in a plan view, and is connected to the right side of the rear end near the corner of the upper frame of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly, and serves to transmit lifting / lowering force to the right side of the rear end near the corner of the upper frame of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly.

[0187] As shown in FIG. 14, this consists of a fourth chain sprocket (571), a fourth weight (572), and a fourth lifting chain (573).

[0189] The above-mentioned fourth chain sprocket (571) is located on one side opposite the second chain sprocket and receives rotational force from the right power transmission rod of the second lifting / lowering drive unit, rotates, and serves to transmit lifting / lowering force to the fourth lifting / lowering chain.

[0191] The above-mentioned fourth weight (572) is located on the left side of the fourth chain sprocket when viewed from the front, and serves to assist the downward sliding force applied to the fourth lifting / lowering chain to slide slowly, or to assist the upward sliding force applied to the fourth lifting / lowering chain to slide accelerated by the weight of the weight.

[0193] The above-mentioned fourth lifting / lowering chain (573) is located on the right side of the fourth chain sprocket when viewed from the front direction and is connected to the right side of the rear end of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly, and receives the lifting / lowering sliding force from the fourth chain sprocket and serves to transmit the lifting / lowering force to the right side of the rear end of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly.

[0195] Thus, by configuring a 4-channel lifting / lowering lift module consisting of a main rotary module for the lifting / lowering lift, a reduction gear for the lifting / lowering lift, a rotary joint bracket, a first lifting / lowering drive unit, a second lifting / lowering drive unit, a third lifting / lowering drive unit, and a fourth lifting / lowering drive unit, the first lifting / lowering drive unit, the second lifting / lowering drive unit, the third lifting / lowering drive unit, and the fourth lifting / lowering drive unit move by receiving torque simultaneously in a 4-point synchronous lifting motion, thereby allowing the 7-channel stacked carrier assembly to be lifted / lowered while maintaining a flat plane without corner sagging or twisting. Furthermore, through the 4-channel lifting / lowering lift module, the 7-channel stacked carrier assembly is lifted / lowered in a completely flat plane, and since the gap between the heater and the baffle and the tray side passage are constant, the thermal uniformity is improved by 80% compared to the conventional method, and the cold spots at the corners and edges of the aluminum alloy plate can be reduced to 40% or less.

[0197] Next, the central chamber solution space (600) according to the present invention will be described.

[0198] The above central chamber solution space (600) is formed along the longitudinal direction in the central part of the internal space of the electric furnace body and includes a stacked tray case, and serves to form a solution atmosphere throughout the entire aluminum alloy plate formed stacked in the stacked tray case.

[0199] As shown in FIG. 15, this consists of a front zone solution space (610), a middle zone solution space (620), and a rear zone solution space (630).

[0201] First, the pre-zone solution space (610) according to the present invention will be described.

[0202] The above-mentioned front zone solution space (610) forms a front zone solution space and serves to solution the aluminum alloy plate stacked in the 7-channel stacked carrier assembly at 520 to 550°C. Here, the front zone solution space refers to a space that uniformly solutiones the aluminum alloy plate at 520 to 550°C based on the 1 / 7 to 3 / 7 division point of the aluminum alloy plate, while the aluminum alloy plate is positioned at the 1 / 7 to 3 / 7 division point of the aluminum alloy plate supported in the 7-channel stacked carrier assembly as shown in FIG. 16.

[0203] This is configured such that a temperature sensor part (611) for the solution space of the previous zone is formed on one side in the external direction.

[0204] The temperature sensor unit (611) for the aforementioned zone solution space is located on one side of the zone solution space and serves to sense the temperature of the zone solution space.

[0205] This is connected to the smart control unit and transmits the temperature sensing value sensed in the previous zone solution space to the smart control unit.

[0207] Second, the middle zone solution space (620) according to the present invention will be described.

[0208] The above-mentioned middle zone solution space (620) forms a middle zone solution space and serves to solution the aluminum alloy plate stacked in the 7-channel stacked carrier assembly at 520 to 550°C. Here, the middle zone solution space refers to a space that uniformly solutiones the aluminum alloy plate at 520 to 550°C based on the 4 / 7 to 5 / 7 division point position of the aluminum alloy plate, while the aluminum alloy plate is positioned at the 4 / 7 to 5 / 7 division point position of the aluminum alloy plate supported in the 7-channel stacked carrier assembly as shown in FIG. 16.

[0209] This is configured such that a temperature sensor part (621) for the solution space of the previous zone is formed on one side in the external direction.

[0210] The temperature sensor unit (521) for the middle zone solution space is located on one side of the middle zone solution space and serves to sense the temperature of the middle zone solution space.

[0211] This is connected to the smart control unit and transmits the temperature sensing value sensed in the middle zone solution space to the smart control unit.

[0213] In addition, the above-mentioned middle zone solution space (620) is configured to include a superheat temperature sensor (622) that senses a superheat temperature of 550°C or higher on one side of the temperature sensor (621) for the front zone solution space.

[0214] This is connected to a smart control unit and transmits the overheat temperature sensing value, which senses the overheat temperature, to the smart control unit.

[0216] Third, the post-zone solution space (630) according to the present invention will be described.

[0217] The above-mentioned rear zone solution space (630) forms a rear zone solution space and serves to solution-treat an aluminum alloy plate stacked in a 7-channel stacked carrier assembly at 520 to 550°C. Here, the rear zone solution space refers to a space that uniformly solution-treats an aluminum alloy plate at 520 to 550°C based on the 6 / 7 to 7 / 7 division point position of the aluminum alloy plate, while the aluminum alloy plate is positioned at the 6 / 7 to 7 / 7 division point position of the aluminum alloy plate supported in the 7-channel stacked carrier assembly as shown in FIG. 16.

[0218] This is configured such that a temperature sensor part (631) for the rear zone solution space is formed on one side in the outer direction.

[0219] The temperature sensor unit (531) for the rear zone solution space is located on one side of the rear zone solution space and serves to sense the temperature of the rear zone solution space.

[0220] This is connected to the smart control unit and transmits the temperature sensing value sensed in the rear zone solution space to the smart control unit.

[0222] In this way, by configuring the central chamber solution space consisting of a front zone solution space, a middle zone solution space, and a rear zone solution space, the entire aluminum alloy plate can be treated in a uniform and stable solution atmosphere at 520 to 550°C, and as a result, alloy components (e.g., Mg₂Si, Al₂Cu, etc.) are dispersed and precipitated, thereby improving strength and durability by 80% compared to the existing method and preventing under-aging or over-aging caused by uneven heating.

[0224] Next, a 7-channel stacked carrier assembly (700) according to the present invention will be described.

[0225] The above 7-channel stacked carrier assembly (700) is formed as a ladder step structure by connecting a horizontal bar between two vertical chains when viewed from the central chamber solution space section and the lifting / lowering sliding front door section, and the ladder step structure is formed as 7 channels (=7 pieces), receiving lifting power from a 4-channel lifting / lowering lift module to receive aluminum alloy plates and raise them step by step to form a stacked structure, and when solution is completed, receives lifting power from a 4-channel lifting / lowering lift module to lower the stacked aluminum alloy plates step by step.

[0226] As illustrated in FIGS. 17 and 18, this consists of a bridge grid frame (710) for a 4-channel lifting / lowering lift module, a first ladder-type stackable carrier section (720), a second ladder-type stackable carrier section (730), a third ladder-type stackable carrier section (740), a fourth ladder-type stackable carrier section (750), a fifth ladder-type stackable carrier section (760), a sixth ladder-type stackable carrier section (770), and a seventh ladder-type stackable carrier section (780).

[0227] In addition to 7 channels (=7 units), the present invention is configured with 8 channels (=8 units), 10 channels (=10 units), and 15 channels (=15 units) selected according to the purpose and form of use.

[0229] First, a bridge grid frame (710) for a 4-channel lifting / lowering lift module according to the present invention will be described.

[0230] The bridge grid frame (710) for the above 4-channel lifting / lowering lift module is located on one side of the upper head section when the central chamber solution space is viewed from the side direction, and is formed as a square grid frame structure, so that the first lifting / lowering drive unit, the second lifting / lowering drive unit, the third lifting / lowering drive unit, and the fourth lifting / lowering drive unit of the 4-channel lifting / lowering lift module are connected to the corner of the upper frame, and the first ladder-type stackable carrier unit, the second ladder-type stackable carrier unit, the third ladder-type stackable carrier unit, the fourth ladder-type stackable carrier unit, the fifth ladder-type stackable carrier unit, the sixth ladder-type stackable carrier unit, and the seventh ladder-type stackable carrier unit are connected along the lower floor pit frame, so that the lifting / lowering force transmitted through the first lifting / lowering drive unit, the second lifting / lowering drive unit, the third lifting / lowering drive unit, and the fourth lifting / lowering drive unit of the 4-channel lifting / lowering lift module is, as is, the first ladder-type stackable It performs the role of a bridge that transmits to the carrier section, the second ladder-type stackable carrier section, the third ladder-type stackable carrier section, the fourth ladder-type stackable carrier section, the fifth ladder-type stackable carrier section, the sixth ladder-type stackable carrier section, and the seventh ladder-type stackable carrier section.

[0232] Second, the first ladder-shaped stackable carrier part (720) according to the present invention will be described.

[0233] The first ladder-shaped stacked carrier section (720) is located at the first row point of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed into a ladder-shaped structure by connecting a horizontal bar between two vertical chains to the bottom pit section, passing the bottom roller of the electric furnace body, and receives lifting power from the 4-channel lifting / lowering lift module to support 1 / 7 of the positions of the aluminum alloy plates being fed in, and forms a stacked structure by lifting one step at a time, and when the solution is completed, receives lifting power from the 4-channel lifting / lowering lift module to support 1 / 7 of the positions of the stacked aluminum alloy plates and lowers one step at a time.

[0234] Here, supporting the 1 / 7 position of the aluminum alloy plate means dividing the square-shaped aluminum alloy plate into 7 equal parts as shown in FIG. 20, and supporting the first divided point among the 7 equal parts through the first left vertical chain, the first right vertical chain, and the first horizontal bar.

[0235] This consists of a first left vertical chain (721), a first right vertical chain (722), a first crossbar (723), a first left bottom pit frame (724), and a first right bottom pit frame (725), as illustrated in FIGS. 18 and 19.

[0237] The first left vertical chain (721) is located on the left side when viewed from the first row of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed as a vertical chain structure to support the first horizontal bar in the left direction.

[0238] At this time, the chain portion connected to the first crossbar is connected with a support finger and a spacer so that it does not slip, and the spacing between adjacent first crossbars in the vertical direction is formed to be 25 to 40 mm.

[0239] And, the material is made of heat-resistant steel.

[0241] The first light vertical chain (722) is located on the light side when viewed from the first row of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed as a vertical chain structure to support the first horizontal bar in the direction of the light.

[0242] At this time, the chain portion connected to the first crossbar is connected with a support finger and a spacer so that it does not slip, and the spacing between adjacent first crossbars in the vertical direction is formed to be 25 to 40 mm.

[0243] And, the material is made of heat-resistant steel.

[0245] The first horizontal bar (723) is positioned between the first left vertical chain and the first right vertical chain and is formed in the shape of a horizontal bar. It supports the aluminum alloy plate at 1 / 7 of its position and raises and lowers it step by step to form a stacked structure. When the solution process is complete, it receives a lifting force from the 4-channel lifting and lowering lift module and supports the aluminum alloy plate at 1 / 7 of its position and lowers it step by step.

[0246] This is configured by selecting one of 7 channels (=7), 9 channels (=9), 12 channels (=12), or 15 channels (=15) between the first left vertical chain and the first right vertical chain.

[0247] The present invention consists of 9 channels (=9 items).

[0248] That is, the entire first horizontal bar composed of 9 channels (=9 pieces) supports the aluminum alloy plate at 1 / 7 of its positions and raises and lowers it step by step to form a stacked structure, and when the solution is completed, it receives the lifting force from the 4-channel lifting and lowering lift module and supports the stacked aluminum alloy plate at 1 / 7 of its positions while lowering it step by step.

[0250] The first left bottom pit frame (724) is positioned in alignment with the first left vertical chain and is formed as a vertical frame structure extending to the bottom pit portion of the electric furnace body, serving to guide the first left vertical chain and the first horizontal bar connected to the first left vertical chain downward to the bottom pit portion of the electric furnace body.

[0251] This is composed of an insulating cover structure, which prevents hot heat from being released to the outside during solution treatment in the central chamber's solution treatment space.

[0253] The first light bottom pit frame (725) is positioned in alignment with the first light vertical chain and is formed as a vertical frame structure extending to the bottom pit portion of the electric furnace body, serving to guide the first light vertical chain and the first horizontal bar connected to the first light vertical chain downward to the bottom pit portion of the electric furnace body.

[0254] This is composed of an insulating cover structure, which prevents hot heat from being released to the outside during solution treatment in the central chamber's solution treatment space.

[0255] The above-mentioned first left floor pit frame and first right floor pit frame are composed of a slim box structure connected to each other.

[0257] Third, the second ladder-shaped stackable carrier part (730) according to the present invention will be described.

[0258] The second ladder-type stacked carrier section (730) is located at the second row of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, which is one side of the first ladder-type stacked carrier section. It is formed into a ladder-type structure by connecting a horizontal bar between two vertical chains to the bottom pit section, passing the bottom roller of the electric furnace body. It receives lifting power from the 4-channel lifting / lowering lift module and supports 2 / 7 of the positions of the aluminum alloy plates being fed in, and forms a stacked structure by lifting one step at a time. When the solution is completed, it receives lifting power from the 4-channel lifting / lowering lift module and supports 2 / 7 of the positions of the stacked aluminum alloy plates, and performs the function of lowering one step at a time.

[0259] Here, supporting the 2 / 7 position of the aluminum alloy plate means dividing the square-shaped aluminum alloy plate into 7 equal parts as shown in FIG. 20, and supporting the second divided point among the 7 equal parts through the second left vertical chain, the second right vertical chain, and the second horizontal bar.

[0260] This consists of a second left vertical chain (731), a second right vertical chain (732), a second crossbar (733), a second left bottom pit frame (734), and a second right bottom pit frame (735), as illustrated in FIGS. 18 and 19.

[0262] The above second left vertical chain (731) is located on the left side when viewed from the second row of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed as a vertical chain structure to support the second horizontal bar in the left direction.

[0263] At this time, the chain portion connected to the second crossbar is connected with a support finger and a spacer so that it does not slip, and the spacing between adjacent second crossbars in the vertical direction is formed to be 25 to 40 mm.

[0264] And, the material is made of heat-resistant steel.

[0266] The above second light vertical chain (732) is located on the light side when viewed from the second row point of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed as a vertical chain structure to support the second horizontal bar in the direction of the light.

[0267] At this time, the chain portion connected to the second crossbar is connected with a support finger and a spacer so that it does not slip, and the spacing between adjacent second crossbars in the vertical direction is formed to be 25 to 40 mm.

[0268] And, the material is made of heat-resistant steel.

[0270] The second horizontal bar (733) is positioned between the second left vertical chain and the second right vertical chain and is formed in the shape of a horizontal bar. It supports the aluminum alloy plate at 2 / 7 of its positions and raises and lowers it step by step to form a stacked structure. When the solution process is complete, it receives a lifting force from the 4-channel lifting and lowering lift module and supports the aluminum alloy plate at 2 / 7 of its positions while lowering it step by step.

[0271] This is configured by selecting one of 7 channels (=7), 9 channels (=9), 12 channels (=12), or 15 channels (=15) between the second left vertical chain and the second right vertical chain.

[0272] The present invention consists of 9 channels (=9 items).

[0273] That is, the entire second horizontal bar, consisting of 9 channels (=9 pieces), supports the aluminum alloy plate at 2 / 7 of the positions where it is inserted, and raises and lowers it step by step to form a stacked structure, and when the solution is completed, it receives the lifting force from the 4-channel lifting and lowering lift module, supports the stacked aluminum alloy plate at 2 / 7 of the positions, and lowers it step by step.

[0275] The second left bottom pit frame (734) is positioned in alignment with the second left vertical chain and is formed as a vertical frame structure extending to the bottom pit portion of the electric furnace body, serving to guide the second left vertical chain and the second horizontal bar connected to the second left vertical chain downward to the bottom pit portion of the electric furnace body.

[0276] This is composed of an insulating cover structure, which prevents hot heat from being released to the outside during solution treatment in the central chamber's solution treatment space.

[0278] The above second light bottom pit frame (735) is positioned in alignment with the second light vertical chain and is formed as a vertical frame structure up to the bottom pit portion of the electric furnace body, serving to guide the second light vertical chain and the second horizontal bar connected to the second light vertical chain downward to the bottom pit portion of the electric furnace body.

[0279] This is composed of an insulating cover structure, which prevents hot heat from being released to the outside during solution treatment in the central chamber's solution treatment space.

[0280] The above-mentioned second left floor pit frame and second right floor pit frame are composed of a slim box structure connected to each other.

[0282] Fourth, the third ladder-shaped stacked carrier part (740) according to the present invention will be described.

[0283] The above third ladder-type stacked carrier section (740) is located at the third row point of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, which is one side of the second ladder-type stacked carrier section, and is formed into a ladder-type structure by connecting a horizontal bar between two vertical chains to the bottom pit section, passing the bottom roller of the electric furnace body, and receiving lifting power from the 4-channel lifting / lowering lift module, it supports 3 / 7 of the positions of the aluminum alloy plates being fed in, and forms a stacked structure by lifting one step at a time, and when the solution is completed, it receives lifting power from the 4-channel lifting / lowering lift module, supports 3 / 7 of the positions of the stacked aluminum alloy plates, and plays the role of lowering one step at a time.

[0284] Here, supporting the 3 / 7 position of the aluminum alloy plate means dividing the square-shaped aluminum alloy plate into 7 equal parts as shown in FIG. 20, and supporting the third divided point among the 7 equal parts through the third left vertical chain, the third right vertical chain, and the third horizontal bar.

[0285] This consists of a third left vertical chain (741), a third right vertical chain (742), a third crossbar (743), a third left bottom pit frame (744), and a third right bottom pit frame (745), as illustrated in FIGS. 18 and 19.

[0287] The above third left vertical chain (741) is located on the left side when viewed from the third row of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed as a vertical chain structure to support the third horizontal bar in the left direction.

[0288] At this time, the chain portion connected to the third crossbar is connected with a support finger and a spacer so that it does not slip, and the spacing between adjacent third crossbars in the vertical direction is formed to be 25 to 40 mm.

[0289] And, the material is made of heat-resistant steel.

[0291] The above third light vertical chain (742) is located on the light side when viewed from the third row point of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed as a vertical chain structure to support the third horizontal bar in the direction of the light.

[0292] At this time, the chain portion connected to the third crossbar is connected with a support finger and a spacer so that it does not slip, and the spacing between adjacent third crossbars in the vertical direction is formed to be 25 to 40 mm.

[0293] And, the material is made of heat-resistant steel.

[0295] The third horizontal bar (743) is positioned between the third left vertical chain and the third right vertical chain and is formed in the shape of a horizontal bar. It supports the aluminum alloy plate at 3 / 7 of its positions and raises and lowers it step by step to form a stacked structure. When the solution process is complete, it receives the lifting force from the 4-channel lifting and lowering lift module and supports the aluminum alloy plate at 3 / 7 of its positions while lowering it step by step.

[0296] This is configured by selecting one of 7 channels (=7), 9 channels (=9), 12 channels (=12), or 15 channels (=15) between the 3rd left vertical chain and the 3rd right vertical chain.

[0297] The present invention consists of 9 channels (=9 items).

[0298] That is, the entire third horizontal bar, consisting of 9 channels (=9 pieces), supports the aluminum alloy plate at 3 / 7 of its positions and raises it step by step to form a stacked structure, and when the solution process is completed, it receives the lifting force from the 4-channel lifting / lowering lift module and supports the stacked aluminum alloy plate at 3 / 7 of its positions while lowering it step by step.

[0300] The above third left bottom pit frame (744) is positioned in alignment with the third left vertical chain and is formed as a vertical frame structure extending to the bottom pit portion of the electric furnace body, serving to guide the third left vertical chain and the third horizontal bar connected to the third left vertical chain downward to the bottom pit portion of the electric furnace body.

[0301] This is composed of an insulating cover structure, which prevents hot heat from being released to the outside during solution treatment in the central chamber's solution treatment space.

[0303] The above third light bottom pit frame (745) is positioned in alignment with the third light vertical chain and is formed as a vertical frame structure extending to the bottom pit portion of the electric furnace body, serving to guide the third light vertical chain and the third horizontal bar connected to the third light vertical chain downward to the bottom pit portion of the electric furnace body.

[0304] This is composed of an insulating cover structure, which prevents hot heat from being released to the outside during solution treatment in the central chamber's solution treatment space.

[0305] The above-mentioned third left floor pit frame and third right floor pit frame are composed of a slim box structure connected to each other.

[0307] Fifth, the fourth ladder-shaped stackable carrier part (750) according to the present invention will be described.

[0308] The above-mentioned fourth ladder-type stacked carrier section (750) is located at the fourth row point of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, which is one side of the third ladder-type stacked carrier section, and is formed into a ladder-type structure by connecting a horizontal bar between two vertical chains to the bottom pit section, passing the bottom roller of the electric furnace body, and receiving lifting power from the 4-channel lifting / lowering lift module, it supports the 4 / 7 position of the aluminum alloy plate being fed in, and forms a stacked structure by lifting it one step at a time, and when the solution is completed, it receives lifting power from the 4-channel lifting / lowering lift module, supports the 4 / 7 position of the stacked aluminum alloy plate, and lowers it one step at a time.

[0309] Here, supporting the 4 / 7 position of the aluminum alloy plate means dividing the square-shaped aluminum alloy plate into 7 equal parts as shown in FIG. 20, and supporting the fourth divided point among the 7 equal parts through the 4th left vertical chain, the 4th right vertical chain, and the 4th horizontal bar.

[0310] This consists of a fourth left vertical chain (751), a fourth right vertical chain (752), a fourth crossbar (753), a fourth left bottom pit frame (754), and a fourth right bottom pit frame (755), as illustrated in FIGS. 18 and 19.

[0312] The above-mentioned fourth left vertical chain (751) is located on the left side when viewed from the fourth row of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed as a vertical chain structure to support the fourth horizontal bar in the left direction.

[0313] At this time, the chain portion connected to the fourth crossbar is connected with a support finger and a spacer so that it does not slip, and the spacing between adjacent fourth crossbars in the vertical direction is formed to be 25 to 40 mm.

[0314] And, the material is made of heat-resistant steel.

[0316] The above-mentioned fourth light vertical chain (752) is located on the light side when viewed from the fourth row point of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed as a vertical chain structure to support the fourth horizontal bar in the direction of the light.

[0317] At this time, the chain portion connected to the fourth crossbar is connected with a support finger and a spacer so that it does not slip, and the spacing between adjacent fourth crossbars in the vertical direction is formed to be 25 to 40 mm.

[0318] And, the material is made of heat-resistant steel.

[0320] The above-mentioned fourth horizontal bar (753) is positioned between the fourth left vertical chain and the fourth right vertical chain and is formed in the shape of a horizontal bar. It supports the 4 / 7 position of the aluminum alloy plate being fed in, and is formed in a stacked manner by raising and lowering it step by step. When the solution is completed, it receives the lifting force from the 4-channel lifting and lowering lift module and supports the 4 / 7 position of the stacked aluminum alloy plate while lowering it step by step.

[0321] This is configured by selecting one of 7 channels (=7), 9 channels (=9), 12 channels (=12), or 15 channels (=15) between the 4th left vertical chain and the 4th right vertical chain.

[0322] The present invention consists of 9 channels (=9 items).

[0323] That is, the entire fourth horizontal bar, consisting of 9 channels (=9 pieces), supports the aluminum alloy plate at the 4 / 7 position among the positions into which it is inserted, and raises and lowers it step by step to form a stacked structure, and when the solution is completed, it receives the lifting force from the 4-channel lifting and lowering lift module, supports the 4 / 7 position among the positions of the stacked aluminum alloy plate, and lowers it step by step.

[0325] The above-mentioned fourth left bottom pit frame (754) is positioned in alignment with the fourth left vertical chain and is formed as a vertical frame structure extending to the bottom pit portion of the electric furnace body, serving to guide the fourth left vertical chain and the fourth horizontal bar connected to the fourth left vertical chain downward to the bottom pit portion of the electric furnace body.

[0326] This is composed of an insulating cover structure, which prevents hot heat from being released to the outside during solution treatment in the central chamber's solution treatment space.

[0328] The above-mentioned fourth light bottom pit frame (755) is positioned in alignment with the fourth light vertical chain and is formed as a vertical frame structure extending to the bottom pit portion of the electric furnace body, serving to guide the fourth light vertical chain and the fourth horizontal bar connected to the fourth light vertical chain downward to the bottom pit portion of the electric furnace body.

[0329] This is composed of an insulating cover structure, which prevents hot heat from being released to the outside during solution treatment in the central chamber's solution treatment space.

[0330] The above-mentioned fourth left floor pit frame and fourth right floor pit frame are composed of a slim box structure connected to each other.

[0332] Sixth, the fifth ladder-shaped stackable carrier part (760) according to the present invention will be described.

[0333] The above-mentioned fifth ladder-type stacked carrier section (760) is located at the fifth row point of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, which is one side of the fourth ladder-type stacked carrier section, and is formed into a ladder-type structure by connecting a horizontal bar between two vertical chains from the bottom roller of the electric furnace body to the bottom pit section, and receives lifting power from the 4-channel lifting / lowering lift module to support the 5 / 7 position of the aluminum alloy plate being fed in, and forms a stacked structure by lifting it one step at a time, and when the solution is completed, receives lifting power from the 4-channel lifting / lowering lift module to support the 5 / 7 position of the stacked aluminum alloy plate, and plays the role of lowering it one step at a time.

[0334] Here, supporting the 5 / 7 position of the aluminum alloy plate means dividing the square-shaped aluminum alloy plate into 7 equal parts as shown in FIG. 20, and supporting the fifth divided point among the 7 equal parts through the 5th left vertical chain, the 5th right vertical chain, and the 5th horizontal bar.

[0335] This consists of a fifth left vertical chain (761), a fifth right vertical chain (762), a fifth crossbar (763), a fifth left bottom pit frame (764), and a fifth right bottom pit frame (765), as illustrated in FIGS. 18 and 19.

[0337] The above-mentioned fifth left vertical chain (761) is located on the left side when viewed from the fifth row of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed as a vertical chain structure to support the fifth horizontal bar in the left direction.

[0338] At this time, the chain portion connected to the fifth crossbar is connected with a support finger and a spacer so that it does not slip, and the spacing between adjacent fifth crossbars in the vertical direction is formed to be 25 to 40 mm.

[0339] And, the material is made of heat-resistant steel.

[0341] The above-mentioned fifth light vertical chain (762) is located on the light side when viewed from the fifth row of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed as a vertical chain structure to support the fifth horizontal bar in the direction of the light.

[0342] At this time, the chain portion connected to the fifth crossbar is connected with a support finger and a spacer so that it does not slip, and the spacing between adjacent fifth crossbars in the vertical direction is formed to be 25 to 40 mm.

[0343] And, the material is made of heat-resistant steel.

[0345] The above-mentioned fifth horizontal bar (763) is positioned between the fifth left vertical chain and the fifth right vertical chain and is formed in the shape of a horizontal bar. It supports the aluminum alloy plate at the 5 / 7 position among the positions of the input, and forms a stacked structure by raising and lowering it step by step. When the solution is completed, it receives the lifting force from the 4-channel lifting and lowering lift module and supports the 5 / 7 position among the positions of the stacked aluminum alloy plate, and lowers it step by step.

[0346] This is configured by selecting one of 7 channels (=7), 9 channels (=9), 12 channels (=12), or 15 channels (=15) between the 5th left vertical chain and the 5th right vertical chain.

[0347] The present invention consists of 9 channels (=9 items).

[0348] That is, the entire fifth horizontal bar, consisting of 9 channels (=9 pieces), supports the aluminum alloy plate at the 5 / 7 position among the positions into which it is inserted, and is raised and lowered step by step to form a stacked structure, and when the solution is completed, it receives the lifting force from the 4-channel lifting and lowering lift module, supports the stacked aluminum alloy plate at the 5 / 7 position among its positions, and is lowered step by step.

[0350] The above-mentioned fifth left bottom pit frame (764) is positioned in alignment with the fifth left vertical chain and is formed as a vertical frame structure extending to the bottom pit portion of the electric furnace body, serving to guide the fifth left vertical chain and the fifth horizontal bar connected to the fifth left vertical chain downward to the bottom pit portion of the electric furnace body.

[0351] This is composed of an insulating cover structure, which prevents hot heat from being released to the outside during solution treatment in the central chamber's solution treatment space.

[0353] The above-mentioned fifth light bottom pit frame (765) is positioned in alignment with the fifth light vertical chain and is formed as a vertical frame structure extending to the bottom pit portion of the electric furnace body, serving to guide the fifth light vertical chain and the fifth horizontal bar connected to the fifth light vertical chain downward to the bottom pit portion of the electric furnace body.

[0354] This is composed of an insulating cover structure, which prevents hot heat from being released to the outside during solution treatment in the central chamber's solution treatment space.

[0355] The above-mentioned fifth left floor pit frame and fifth right floor pit frame are composed of a slim box structure connected to each other.

[0357] Seventh, the sixth ladder-shaped stackable carrier part (770) according to the present invention will be described.

[0358] The above-mentioned 6th ladder-type stacked carrier section (770) is located at the sixth row point of the lower floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, which is one side of the 5th ladder-type stacked carrier section, and is formed into a ladder-type structure by connecting a horizontal bar between two vertical chains from the bottom roller of the electric furnace body to the bottom pit section, and receives lifting power from the 4-channel lifting / lowering lift module to support 6 / 7 of the positions of the aluminum alloy plates being fed in, and forms a stacked structure by lifting one step at a time, and when the solution is completed, receives lifting power from the 4-channel lifting / lowering lift module to support 6 / 7 of the positions of the stacked aluminum alloy plates, and plays the role of lowering one step at a time.

[0359] Here, supporting the 6 / 7 position of the aluminum alloy plate means dividing the square-shaped aluminum alloy plate into 7 equal parts as shown in FIG. 20, and supporting the sixth divided point among the 7 equal parts through the 6th left vertical chain, the 6th right vertical chain, and the 6th horizontal bar.

[0360] This consists of a sixth left vertical chain (771), a sixth right vertical chain (772), a sixth crossbar (773), a sixth left bottom pit frame (774), and a sixth right bottom pit frame (775), as illustrated in FIGS. 18 and 19.

[0362] The above-mentioned sixth left vertical chain (771) is located on the left side when viewed from the sixth row of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed as a vertical chain structure to support the sixth horizontal bar in the left direction.

[0363] At this time, the chain portion connected to the 6th crossbar is connected with a support finger and a spacer so that it does not slip, and the spacing between adjacent 6th crossbars in the vertical direction is formed to be 25 to 40 mm.

[0364] And, the material is made of heat-resistant steel.

[0366] The above-mentioned sixth light vertical chain (772) is located on the light side when viewed from the sixth row of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed as a vertical chain structure to support the sixth horizontal bar in the direction of the light.

[0367] At this time, the chain portion connected to the 6th crossbar is connected with a support finger and a spacer so that it does not slip, and the spacing between adjacent 6th crossbars in the vertical direction is formed to be 25 to 40 mm.

[0368] And, the material is made of heat-resistant steel.

[0370] The above-mentioned 6th horizontal bar (773) is positioned between the 6th left vertical chain and the 6th right vertical chain and is formed in the shape of a horizontal bar. It supports the 6th / 7th position of the aluminum alloy plate being fed in, and is formed in a stacked manner by raising and lowering it step by step. When the solution is completed, it receives the lifting force from the 4-channel lifting and lowering lift module and supports the 6th / 7th position of the stacked aluminum alloy plate, and plays the role of lowering it step by step.

[0371] This is configured by selecting one of 7 channels (=7), 9 channels (=9), 12 channels (=12), or 15 channels (=15) between the 6th left vertical chain and the 6th right vertical chain.

[0372] The present invention consists of 9 channels (=9 items).

[0373] That is, the entire 6th horizontal bar, consisting of 9 channels (=9 pieces), supports the 6th / 7th position of the aluminum alloy plate being fed in, and is raised and lowered step by step to form a stacked structure, and when the solution is completed, it receives the lifting force from the 4-channel lifting and lowering lift module, supports the 6th / 7th position of the stacked aluminum alloy plate, and is lowered step by step.

[0375] The above-mentioned 6th left bottom pit frame (774) is positioned in alignment with the 6th left vertical chain and is formed as a vertical frame structure extending to the bottom pit portion of the electric furnace body, serving to guide the 6th left vertical chain and the 6th horizontal bar connected to the 6th left vertical chain downward to the bottom pit portion of the electric furnace body.

[0376] This is composed of an insulating cover structure, which prevents hot heat from being released to the outside during solution treatment in the central chamber's solution treatment space.

[0378] The above-mentioned sixth light bottom pit frame (775) is positioned in alignment with the sixth light vertical chain and is formed as a vertical frame structure extending to the bottom pit portion of the electric furnace body, serving to guide the sixth light vertical chain and the sixth horizontal bar connected to the sixth light vertical chain downward to the bottom pit portion of the electric furnace body.

[0379] This is composed of an insulating cover structure, which prevents hot heat from being released to the outside during solution treatment in the central chamber's solution treatment space.

[0380] The above-mentioned 6th left floor pit frame and 6th right floor pit frame are composed of a slim box structure connected to each other.

[0382] Eighth, the seventh ladder-shaped stackable carrier part (780) according to the present invention will be described.

[0383] The above-mentioned seventh ladder-type stacked carrier section (780) is located at the seventh row point of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, which is one side of the sixth ladder-type stacked carrier section, and is formed into a ladder-type structure by connecting a horizontal bar between two vertical chains to the bottom pit section, passing the bottom roller of the electric furnace body, and receiving lifting power from the 4-channel lifting / lowering lift module, it supports the 7 / 7 position of the aluminum alloy plate being fed in, and forms a stacked structure by lifting it one step at a time, and when the solution is completed, it receives lifting power from the 4-channel lifting / lowering lift module, supports the 7 / 7 position of the stacked aluminum alloy plate, and lowers it one step at a time.

[0384] Here, supporting the 7 / 7 position of the aluminum alloy plate means dividing the square-shaped aluminum alloy plate into 7 equal parts as shown in FIG. 20, and supporting the seventh divided point among the 7 equal parts through the 7th left vertical chain, the 7th right vertical chain, and the 7th horizontal bar.

[0385] This consists of a seventh left vertical chain (781), a seventh right vertical chain (782), a seventh crossbar (783), a seventh left bottom foot frame (784), and a seventh right bottom foot frame (785), as illustrated in FIGS. 18 and 19.

[0387] The above-mentioned 7th left vertical chain (781) is located on the left side when viewed from the seventh row of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed as a vertical chain structure to support the 7th horizontal bar in the left direction.

[0388] At this time, the chain portion connected to the 7th crossbar is connected with a support finger and a spacer so that it does not slip, and the spacing between adjacent 7th crossbars in the vertical direction is formed to be 25 to 40 mm.

[0389] And, the material is made of heat-resistant steel.

[0391] The above-mentioned seventh light vertical chain (782) is located on the light side when viewed from the seventh row point of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed as a vertical chain structure to support the seventh horizontal bar in the direction of the light.

[0392] At this time, the chain portion connected to the 7th crossbar is connected with a support finger and a spacer so that it does not slip, and the spacing between adjacent 7th crossbars in the vertical direction is formed to be 25 to 40 mm.

[0393] And, the material is made of heat-resistant steel.

[0395] The above-mentioned 7th horizontal bar (783) is positioned between the 7th left vertical chain and the 7th right vertical chain and is formed in the shape of a horizontal bar. It supports the 7 / 7 position of the aluminum alloy plate being fed in, and is formed in a stacked manner by raising and lowering it step by step. When the solution is completed, it receives the lifting force from the 4-channel lifting and lowering lift module and supports the 7 / 7 position of the stacked aluminum alloy plate, and plays the role of lowering it step by step.

[0396] This is configured by selecting one of 7 channels (=7), 9 channels (=9), 12 channels (=12), or 15 channels (=15) between the 7th left vertical chain and the 7th right vertical chain.

[0397] The present invention consists of 9 channels (=9 items).

[0398] That is, the entire 7th horizontal bar, consisting of 9 channels (=9 pieces), supports the 7 / 7 position of the aluminum alloy plate being fed in, and is raised and lowered step by step to form a stacked structure, and when the solution is completed, it receives the lifting force from the 4-channel lifting and lowering lift module, supports the 7 / 7 position of the stacked aluminum alloy plate, and is lowered step by step.

[0400] The above-mentioned 7th left bottom pit frame (784) is positioned in alignment with the 7th left vertical chain and is formed as a vertical frame structure extending to the bottom pit portion of the electric furnace body, serving to guide the 7th left vertical chain and the 7th horizontal bar connected to the 7th left vertical chain downward to the bottom pit portion of the electric furnace body.

[0401] This is composed of an insulating cover structure, which prevents hot heat from being released to the outside during solution treatment in the central chamber's solution treatment space.

[0403] The above-mentioned 7th light bottom pit frame (785) is positioned in alignment with the 7th light vertical chain and is formed as a vertical frame structure extending to the bottom pit portion of the electric furnace body, serving to guide the 7th light vertical chain and the 7th horizontal bar connected to the 7th light vertical chain downward to the bottom pit portion of the electric furnace body.

[0404] This is composed of an insulating cover structure, which prevents hot heat from being released to the outside during solution treatment in the central chamber's solution treatment space.

[0405] The above-mentioned 7th left floor pit frame and 7th right floor pit frame are composed of a slim box structure connected to each other.

[0407] Thus, by configuring a 7-channel stacked carrier assembly consisting of a bridge grid frame for a 4-channel lifting / lowering lift module, a first ladder-type stacked carrier section, a second ladder-type stacked carrier section, a third ladder-type stacked carrier section, a fourth ladder-type stacked carrier section, a fifth ladder-type stacked carrier section, a sixth ladder-type stacked carrier section, and a seventh ladder-type stacked carrier section, the first, second, third, and fourth lifting / lowering chains of the 4-channel lifting / lowering lift module are formed on the bridge grid frame for the 4-channel lifting / lowering lift module. This mechanically suppresses parallelogram deformation, averages the lifting / lowering chain tension at the bridge, reduces the left-right, front-back, and rear height difference to ≤ ±1.0 mm, improves shaking by 80% compared to the conventional method, and parallelizes input, stacking, heating, and discharge in units of width × layer, thereby increasing the throughput per unit cycle by 5 to 20 times compared to the same electric furnace size. By improving the ladder-like structure and geometrically fixing the spacing (pitch) of the aluminum alloy plates so that the convection passages on both sides of each plate are always the same, the hot air dispersed from the tray-side passing type hot air convection forming module uniformly penetrates the 7-channel stacked carrier assembly, thereby achieving a wind speed deviation between channels within ±10% and a full-loading thermal uniformity of ±3~5 °C (520~550 °C), the surface quality of the aluminum alloy plates can be improved by 1.5 to 3 times compared to the conventional method.

[0409] Next, the floor rail portion (800) according to the present invention will be described.

[0410] The above-mentioned bottom rail section (800) has a plurality of rollers formed as a rail structure on one side of the bottom of the central chamber solution space section, and generates a forward output force to output an aluminum alloy plate, which has been lowered step by step through the 7-channel stacked carrier assembly section, outward.

[0411] As shown in FIGS. 21 and 22, this consists of a roller section (810), a roller drive section (820), and a position sensor section (830).

[0413] The roller part (810) is formed in a rod shape and plays the role of outputting the aluminum alloy plate outward while in rolling contact with the aluminum alloy plate.

[0414] This consists of a first roller, a second roller, a third roller, a fourth roller, a fifth roller, a sixth roller, a seventh roller, an eighth roller, a ninth roller, and a tenth roller. The roller section is supported by a frame support shaft (711).

[0415] Depending on the purpose of use and form, in addition to 10 channels (=10 units), it is configured with 12 channels (=12 units), 15 channels (=15 units), and 20 channels (=20 units).

[0417] The above roller drive unit (820) is connected between the roller unit and the roller unit by a chain and then serves to transmit rotational force to the chain.

[0418] This is configured with a drive motor connected to one side of the chain, transmitting the rotational force of the drive motor to the chain.

[0420] The above position sensor unit (830) is located on one side of the roller unit and serves to sense the position of the aluminum alloy plate.

[0422] In this way, by configuring the floor rail section consisting of a roller section, a roller drive section, and a position sensor section, the aluminum alloy plate that has completed solution treatment can be accurately moved outward, and the input of a new aluminum alloy plate and the discharge of an existing aluminum alloy plate can be carried out simultaneously.

[0424] Next, a smart control unit (900) according to the present invention will be described.

[0425] The smart control unit (900) is connected to the lifting / lowering sliding front door unit, the side wall electric heater bank unit, the tray side pass-through type hot air convection forming module, the 4-channel lifting / lowering lift module, the central chamber solution treatment space unit, the 7-channel stacked carrier assembly unit, and the floor rail unit, and controls the overall operation of each device, stacks aluminum alloy plates one by one to form a stacked structure, closes the door to seal it, forms a tray side hot air convection on the side of the stacked aluminum alloy plates, performs solution treatment at a temperature of 520~550℃ on the upper surface, lower surface, left side, right side, rear, and front surface of the stacked aluminum alloy plates, and controls the output to be lowered one step at a time along the floor rail when the solution treatment is completed.

[0426] This is configured by selecting one of a PIC one-chip microcontroller, a microcomputer, or a microprocessor.

[0427] The present invention is composed of a microprocessor.

[0429] That is, as illustrated in FIG. 23, a temperature sensor unit (611) for the front zone solution space is connected to one side of an input terminal to input a sensing signal that senses the temperature of the front zone solution space, and a temperature sensor unit (621) for the middle zone solution space is connected to one side of another input terminal to input a sensing signal that senses the temperature of the middle zone solution space, and an overheating temperature sensor unit (622) is connected to one side of another input terminal to input a sensing signal that senses an overheating temperature of 550°C or higher, and a temperature sensor unit (631) for the rear zone solution space is connected to one side of another input terminal to input a sensing signal that senses the temperature of the rear zone solution space, and on one side of another input terminal A position sensor unit (830) is connected to receive a sensing signal that senses the position of a stacked tray case that advances in a pitch shape, and an air cylinder type lifting / lowering sliding unit (220) is connected to one side of an output terminal to generate the force of an air cylinder that lifts / lowers / slides and outputs an output signal that transmits it toward the door panel, and a front zone electric heater unit (310) is connected to one side of another output terminal to output an output signal that supplies a heat source of 520~550 ℃ to a tray side-passing type hot air convection forming module on one side of the front zone side wall of the central chamber solution space in the internal space of the electric furnace body, and a middle zone electric heater unit (320) is connected to one side of another output terminal to supply a tray side-passing type hot air convection forming module on one side of the middle zone side wall of the central chamber solution space in the internal space of the electric furnace body An output signal is output to supply a heat source of 520~550 ℃, and a rear zone electric heater unit (330) is connected to one side of another output terminal, and an output signal is output to supply a heat source of 520~550 ℃ to a tray side-passing hot air convection forming module on one side of the rear zone side wall of the central chamber solution space in the internal space of the electric furnace body.A 4-channel circulation fan unit (410) is connected to one side of another output terminal to draw in hot air from inside, and outputs an output signal that creates an atmosphere of forced convection of the hot air, which is the internal air of the electric furnace body, in a clockwise direction using the force of the suction, and a main rotary motor (510) for a lifting lift is connected to one side of another output terminal to generate rotational force and outputs an output signal that transmits it to the reduction gear for the lifting lift.

[0431] Thus, by configuring the smart control unit, the next zone heater and fan can be preheated or output reduced based on the load and temperature (previous zone log) to be introduced in the next pitch, thereby eliminating the temperature step phenomenon at the boundaries of the front, middle, and rear zones and maintaining a uniform solution treatment atmosphere. By sensing the ΔP and hot air speed per channel and automatically adjusting the fan VFD and baffle opening ratio, cold spots at the corners and edges of the aluminum alloy sheet can be eliminated, and the flow along the front side of the tray can be maintained to produce high-quality solution-treated aluminum alloy sheet. Furthermore, by integrating event synchronization, load adaptation, and flow rate balancing into a closed loop, a thermal uniformity of ±3 to 5 °C and low overshoot can be maintained even in a closed-state pitch-forward process, and energy reduction and quality dispersion can be improved by 80% compared to conventional methods.

[0433] Hereinafter, a specific process of the tray side hot air convection type smart solution furnace method according to the present invention will be described.

[0435] FIG. 27 is a flowchart illustrating a method for a tray-side hot air convection type smart solution furnace according to the present invention.

[0437] First, as shown in FIG. 24, the lifting and lowering sliding front door section is lifted and slid (S10).

[0439] Next, a 4-channel lifting and lowering force is generated through a 4-channel lifting and lowering lift module and transmitted to the 7-channel stacked carrier assembly (S20).

[0440] That is, as shown in FIG. 28, rotational force is generated through the main rotary motor for the lift and transmitted to the reduction gear for the lift (S21).

[0441] Next, the rotational force received from the main rotary motor for the lifting / lowering sliding is converted to low speed and high torque through the reduction gear for the lifting / lowering lift and transmitted to the rotating joint bracket (S22).

[0442] Next, at the rotary joint bracket, a low-speed, high-torque force is received from the reduction gear for the lifting lift and simultaneously transmitted to the gear-coupled first lifting drive unit and second lifting drive unit (S23).

[0443] Next, through the first lifting / lowering drive unit, the lifting / lowering force is transmitted to the left side of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly (S24).

[0444] Next, through the second lifting / lowering drive unit, the lifting / lowering force is transmitted to the front right side of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly (S25).

[0445] Next, through the third lifting / lowering drive unit, the lifting / lowering force is transmitted to one side of the rear left end of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly (S26).

[0446] Next, through the fourth lifting / lowering drive unit, the lifting / lowering force is transmitted to one side of the rear right end of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly (S27).

[0447] Here, the first lifting / lowering drive unit, the second lifting / lowering drive unit, the third lifting / lowering drive unit, and the fourth lifting / lowering drive unit are driven simultaneously to simultaneously transmit the lifting / lowering force to the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly.

[0449] Next, as shown in FIG. 24, the lifting force is transmitted from the 4-channel lifting / lowering lift module through the 7-channel stacked carrier assembly, and the aluminum alloy plate is received and lifted step by step to form a stacked structure (S30).

[0450] That is, as illustrated in FIG. 29, in the bridge grid frame for the 4-channel lifting / lowering lift module, the lifting / lowering force transmitted through the first lifting / lowering drive unit, the second lifting / lowering drive unit, the third lifting / lowering drive unit, and the fourth lifting / lowering drive unit of the 4-channel lifting / lowering lift module is transmitted as is to the first ladder-type stacked carrier unit, the second ladder-type stacked carrier unit, the third ladder-type stacked carrier unit, the fourth ladder-type stacked carrier unit, the fifth ladder-type stacked carrier unit, the sixth ladder-type stacked carrier unit, and the seventh ladder-type stacked carrier unit (S31).

[0451] Next, in the first ladder-type stacked carrier section, the lifting force is transmitted from the 4-channel lifting / lowering lift module, and while supporting 1 / 7 of the positions of the aluminum alloy plate being fed in, it is lifted step by step to form a stacked structure (S32).

[0452] Next, in the second ladder-type stacked carrier section, the lifting force is transmitted from the 4-channel lifting / lowering lift module, and while supporting 2 / 7 of the positions of the aluminum alloy plate being fed in, it is lifted step by step to form a stacked structure (S33).

[0453] Next, in the third ladder-type stacked carrier section, the lifting force is transmitted from the 4-channel lifting / lowering lift module, and while supporting the 3 / 7 position of the aluminum alloy plate being fed in, it is lifted step by step to form a stacked structure (S34).

[0454] Next, in the fourth ladder-type stacked carrier section, the lifting force is transmitted from the 4-channel lifting / lowering lift module, and while supporting the 4 / 7 position of the aluminum alloy plate being fed in, it is lifted step by step to form a stacked structure (S35).

[0455] Next, in the 5th ladder-type stacked carrier section, the lifting force is transmitted from the 4-channel lifting / lowering lift module, and while supporting the 5 / 7 position of the aluminum alloy plate being fed in, it is lifted step by step to form a stacked structure (S36).

[0456] Next, in the 6th ladder-type stacked carrier section, the lifting force is transmitted from the 4-channel lifting / lowering lift module, and while supporting the 6th / 7th position of the aluminum alloy plate being fed in, it is lifted step by step to form a stacked structure (S37).

[0457] Next, in the 7th ladder-type stacked carrier section, the lifting force is transmitted from the 4-channel lifting / lowering lift module, and while supporting the 7 / 7 position of the aluminum alloy plate being fed in, it is lifted step by step to form a stacked structure (S38).

[0458] Here, the first ladder-type stacked carrier section, the second ladder-type stacked carrier section, the third ladder-type stacked carrier section, the fourth ladder-type stacked carrier section, the fifth ladder-type stacked carrier section, the sixth ladder-type stacked carrier section, and the seventh ladder-type stacked carrier section simultaneously receive lifting force from the 4-channel lifting / lowering lift module to lift the entire aluminum alloy plate material being fed in one step at a time and form it in a stacked manner.

[0460] Next, the lifting and lowering sliding front door section is lowered and closed, and heat of 520~550 ℃ is generated through the side wall electric heater bank section to the tray side pass-through type hot air convection forming module (S40).

[0461] That is, as shown in FIG. 30, a heat source of 520 to 550 ℃ is supplied to a tray side-passing hot air convection forming module through the front zone electric heater section (S41).

[0462] Next, a heat source of 520~550 ℃ is supplied to the tray side-passing hot air convection forming module through the middle zone electric heater section (S42).

[0463] Next, a heat source of 520~550 ℃ is supplied to the tray side pass-through type hot air convection forming module through the rear zone electric heater section (S43).

[0465] Next, as illustrated in FIG. 8, a convection is formed so that hot air passes clockwise through the tray side pass-type hot air convection forming module, passing from the side wall electric heater bank section in the internal space of the electric furnace body, through the top, toward the tray side of the 7-channel stacked carrier assembly section located in the central chamber solution space (S50).

[0466] That is, as illustrated in FIG. 31, hot air inside is sucked in through a 4-channel circulation fan, and by the force of the suction, an atmosphere is formed that forces the hot air inside the electric furnace body to convect clockwise (S51).

[0467] Next, hot internal air is guided to flow toward the plenum space through the ducted air passage, following the clockwise forced convection atmosphere generated from the 4-channel circulation fan section (S52).

[0468] Next, hot air with a clockwise forced convection atmosphere is supplied from the plenum space through the duct-type air passage, temporarily collected, and delivered to the side air guide (S53).

[0469] Next, the hot air collected in the plenum space is dispersed and discharged through a plurality of side air discharge holes to the entire side of the tray of the stacked tray case located in the central chamber solution space through the side air guide section (S54).

[0471] Next, as shown in FIG. 25, a solution atmosphere is formed over the entire aluminum alloy plate formed in a stacked manner in the 7-channel stacked carrier assembly through the central chamber solution space (S60).

[0473] Finally, as shown in FIG. 26, the lifting and lowering sliding rear door section is lifted and slid open, and the aluminum alloy sheet material that has undergone solution treatment is lowered step by step from the 7-channel stacked carrier assembly section and output one by one to an external cooling process along the bottom rail section (S70). Explanation of the symbols

[0475] 1: Tray side hot air convection type smart solution furnace device 100 : Electric furnace main body 200 : Lifting / lowering sliding front door unit 300: Side wall electric heater bank section 400: Tray side-pass type hot air convection forming module 500: Central chamber solution treatment space 600 : Stackable Tray Case 700 : Floor rail section 800 : Smart Control Unit

Claims

Claim 1 In a tray-side hot air convection type smart solution furnace device that forms aluminum alloy plates by stacking them one by one in a stacked manner, seals the door, forms tray-side hot air convection on the side of the stacked aluminum alloy plates, performs solution treatment at a temperature of 520~550℃ on the top, bottom, left, right, rear, and front surfaces of the stacked aluminum alloy plates, and outputs them one by one along a floor rail by lowering them step by step once the solution treatment is completed, the tray-side hot air convection type smart solution furnace device comprises: an electric furnace main body (100) formed in a rectangular box shape to protect and support each device from external pressure; a lifting-down sliding front door part (200) located on one side of the front of the electric furnace main body, which performs the function of a door by sliding up and down with the force of an air cylinder; and a tray-side passing hot air that is located on the inner wall of the internal space of the electric furnace main body when viewed from the front direction and is formed in a 4-channel (=4) structure. A side wall electric heater bank (300) that generates heat of 520~550℃ toward the convection forming module; a tray side-passing type hot air convection forming module (400) that forms a convection by causing clockwise hot air to pass through the side of the tray of a stacked tray case located in the central chamber solution space, passing the top from the side wall electric heater bank in the internal space of the electric furnace body; a 4-channel lifting / lowering lift module (500) located on one side of the upper outer side of the electric furnace body, which generates a lifting / lowering force of a 4-channel structure and transmits it toward the 7-channel stacked carrier assembly; a central chamber solution space (600) formed along the longitudinal direction in the central part of the internal space of the electric furnace body, which includes a stacked tray case and forms a solution atmosphere over the entire aluminum alloy plate formed stackedly in the stacked tray case; and on the central chamber solution space, when viewed from the perspective of the lifting / lowering sliding front door, between the two vertical chains Horizontal bars are connected to form a ladder-like structure, and the ladder-like structure is formed into 7 channels (=7 pieces),A 7-channel stacked carrier assembly (700) that receives lifting force from a 4-channel lifting / lowering lift module, receives aluminum alloy plates, lifts them one step at a time to form a stacked structure, and upon completion of solution treatment, receives lifting force from the 4-channel lifting / lowering lift module to lower the stacked aluminum alloy plates one step at a time; a floor rail section (800) in which a plurality of rollers are formed in a rail structure on one side of the floor of the central chamber solution treatment space, generates a forward output force, and outputs the aluminum alloy plates lowered one step at a time through the 7-channel stacked carrier assembly to the outside; and a lifting / lowering sliding front door section, a side wall electric heater bank section, a tray side pass-through type hot air convection forming module, a 4-channel lifting / lowering lift module, a central chamber solution treatment space, a 7-channel stacked carrier assembly section, and a floor rail section connected to control the overall operation of each device, stacks aluminum alloy plates one by one to form a stacked structure, and closes the door to seal it. A tray side hot air convection type smart solution furnace device characterized by comprising a smart control unit (900) that, after forming tray side hot air convection on the side of the stacked aluminum alloy plates, solution treatment is performed on the upper surface, lower surface, left side, right side, rear surface, and front surface of the stacked aluminum alloy plates at a temperature of 520~550℃, and when the solution treatment is completed, controls to output one by one along the bottom rail by lowering it step by step. Claim 2 delete Claim 3 In claim 1, the above-mentioned lifting and lowering sliding front door section (200) is formed in a rectangular shape and is configured with a door panel (210) that receives lifting and lowering sliding force from an air cylinder type lifting and lowering sliding section and performs the function of opening or closing relative to the electric furnace body while sliding up and down; an air cylinder type lifting and lowering sliding section (220) in which an air cylinder is formed in a twin structure on one side of the door panel to generate the force of the air cylinder that slides up and down and transmits it toward the door panel; and a side guide rail section (230) located on one side of the door panel to guide lifting and lowering along the side line. This characterizes the tray side hot air convection type smart solution electric furnace device. Claim 4 In claim 1, the side wall electric heater bank (300) comprises a front zone electric heater unit (310) located on one side of the front zone side wall of the central chamber solution space within the internal space of the electric furnace body and supplying a heat source of 520~550 ℃ to a tray side-passing type hot air convection forming module, a middle zone electric heater unit (320) located on one side of the middle zone side wall of the central chamber solution space within the internal space of the electric furnace body and supplying a heat source of 520~550 ℃ to a tray side-passing type hot air convection forming module, and a rear zone side wall located on one side of the central chamber solution space within the internal space of the electric furnace body and supplying a heat source of 520~550 ℃ to a tray side-passing type hot air convection forming module. A tray side hot air convection type smart solution electric furnace device characterized by being composed of a rear zone electric heater section (330). Claim 5 In claim 1, the tray side-pass type hot air convection forming module (400) is located on one side of the upper outer direction of the electric furnace body and is formed with a 4-channel (=4) structure, and comprises a 4-channel circulation fan section (410) that sucks in hot air inside and, by the force of the sucking, forms an atmosphere that forcibly convects the hot air, which is the internal air of the electric furnace body, in a clockwise direction; a duct-type air passage section (420) located on one side of the output end of the 4-channel circulation fan section and guides the hot internal air to flow toward the plenum space section along the clockwise forced convection atmosphere generated from the 4-channel circulation fan section; a plenum space section (430) formed with a structure that surrounds the central chamber solution space section of the internal space when viewed from the front direction, receives the hot air of the clockwise forced convection atmosphere through the duct-type air passage section, temporarily collects it, and transmits it toward the side air guide section; and both sides of the central chamber solution space section of the internal space. A tray side hot air convection type smart solution electric furnace device characterized by being composed of a side air guide section (440) located on one side, which disperses and discharges hot air collected in the plenum space section through a plurality of side air discharge holes to the entire side of the tray of a stacked tray case located in the central chamber solution space section. Claim 6 In claim 1, the 4-channel lifting / lowering lift module (500) comprises: a main rotary motor (510) for the lifting / lowering lift that is located on one side of the upper outer direction of the electric furnace body and generates rotational force and transmits it to the reduction gear for the lifting / lowering lift; a reduction gear (520) for the lifting / lowering lift that converts the rotational force received from the main rotary motor for the lifting / lowering sliding into low speed and high torque and transmits it to the rotational joint bracket part; a rotational joint bracket part (530) that receives the low speed and high torque force from the reduction gear for the lifting / lowering lift and simultaneously transmits it to the gear-coupled first lifting / lowering drive part and the second lifting / lowering drive part; and a bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly that is located on one side of the front left when the electric furnace body is viewed in a plan view and is connected to the front left side of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly, thereby transmitting the lifting / lowering force to the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly A first lifting / lowering drive unit (540) that transmits lifting / lowering force to the front left side of the upper frame corner of the bridge grid frame; a second lifting / lowering drive unit (550) located on the front right side when viewing the electric furnace main body in a plan view, connected to the front right side of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly, that transmits lifting / lowering force to the front right side of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly; and a rear left side located on the rear left side when viewing the electric furnace main body in a plan view, connected to the rear left side of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly, that transmits lifting / lowering force to the rear left side of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly. The third lifting / lowering drive unit (560) and the electric furnace main body are located on the right side of the rear end when viewed in a plan view, andA tray side hot air convection type smart solution electric furnace device characterized by being composed of a fourth lifting / lowering drive unit (570) that is connected to one side of the rear right end of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly, and transmits the lifting / lowering force to one side of the rear right end of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly. Claim 7 In claim 6, the first lifting / lowering drive unit (540) is connected to the first lifting / lowering drive unit transmission bevel gear of the rotating joint bracket unit, and comprises a first bevel gear (541) that receives rotational force from the first lifting / lowering drive unit transmission bevel gear and transmits it toward the first chain sprocket, a first chain sprocket (542) located on one side of the first bevel gear, which receives rotational force from the first bevel gear and rotates to rotate the left power transmission rod unit and transmits lifting / lowering force to the first lifting / lowering chain, a left power transmission rod unit (543) located on one side of the rear end of the first chain sprocket and connecting the first chain sprocket and the third chain sprocket, which receives rotational force from the first chain sprocket and transmits it toward the third chain sprocket, and a left power transmission rod unit (543) located on one side of the left side of the first chain sprocket when viewed from the front direction, and the first A tray side hot air convection type smart solution electric furnace device characterized by comprising: a first weight (544) which assists the downward sliding force applied to the lifting / lowering chain to slide slowly or assists the lifting / lowering force applied to the first lifting / lowering chain to slide accelerated by the weight of the weight; and a first lifting / lowering chain (545) which is located on one side of the right of the first chain sprocket when viewed from the front direction, and is connected to one side of the front left of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly, receives the lifting / lowering sliding force from the first chain sprocket, and transmits the lifting / lowering force to one side of the front left of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly. Claim 8 In claim 1, the central chamber solution space (600) is characterized by being composed of a front zone solution space (610) that forms a front zone solution space to solution aluminum alloy plates stacked in a 7-channel stacked carrier assembly to 520~550℃, a middle zone solution space (620) that forms a middle zone solution space to solution aluminum alloy plates stacked in a 7-channel stacked carrier assembly to 520~550℃, and a rear zone solution space (630) that forms a rear zone solution space to solution aluminum alloy plates stacked in a 7-channel stacked carrier assembly to 520~550℃. Claim 9 In claim 1, the 7-channel stackable carrier assembly (700) is located on one side of the upper head portion when the central chamber solution space portion is viewed from the side direction, and is formed with a square grid frame structure, so that the first, second, third, and fourth lifting drive portions of the 4-channel lifting lift module are connected to the corner of the upper frame, and the first ladder-type stackable carrier portion, second ladder-type stackable carrier portion, third ladder-type stackable carrier portion, fourth ladder-type stackable carrier portion, fifth ladder-type stackable carrier portion, sixth ladder-type stackable carrier portion, and seventh ladder-type stackable carrier portion are connected along the lower floor pit frame, so that the lifting and lowering force transmitted through the first, second, third, and fourth lifting drive portions of the 4-channel lifting lift module is, as is, the first ladder-type stackable A bridge grid frame (710) for a 4-channel lifting / lowering lift module that performs the role of a bridge transmitting to the carrier section, the second ladder-type stacked carrier section, the third ladder-type stacked carrier section, the fourth ladder-type stacked carrier section, the fifth ladder-type stacked carrier section, the sixth ladder-type stacked carrier section, and the seventh ladder-type stacked carrier section; and a first ladder-type stacked carrier that is positioned at the first row point of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, and is formed into a single ladder-type structure by connecting a horizontal bar between two vertical chains to the bottom pit section passing the bottom roller of the electric furnace body, and receives lifting force from the 4-channel lifting / lowering lift module to support 1 / 7 of the positions of the input aluminum alloy plate material, and is formed in a stacked manner by lifting one step at a time, and when the solution is completed, receives lifting force from the 4-channel lifting / lowering lift module to support 1 / 7 of the positions of the stacked aluminum alloy plate material, and is lowered one step at a time. Carrier part (720) and,A second ladder-step stackable carrier (730) is positioned at the second row of the lower floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, which is one side of the first ladder-step stackable carrier, and is formed into a single ladder-step structure by connecting a horizontal bar between two vertical chains passing the bottom roller of the electric furnace body to the bottom pit area, receiving lifting force from the 4-channel lifting / lowering lift module to support 2 / 7 of the positions of the input aluminum alloy plates and raising them one step at a time to form a stackable structure, and upon completion of solution, receives lifting force from the 4-channel lifting / lowering lift module to support 2 / 7 of the positions of the stacked aluminum alloy plates and lowers them one step at a time; and a second ladder-step stackable carrier (730) is positioned at the third row of the lower floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, which is one side of the second ladder-step stackable carrier, and is formed into a single ladder-step structure by connecting a horizontal bar between two vertical chains passing the bottom roller of the electric furnace body to the bottom pit area. A third ladder-step stacking carrier section (740) is formed by receiving lifting force from a 4-channel lifting / lowering lift module, supporting 3 / 7 of the positions of the input aluminum alloy plates, and forming a stacked structure by raising and lowering one step at a time, and upon completion of solution treatment, receiving lifting force from the 4-channel lifting / lowering lift module, supporting 3 / 7 of the positions of the stacked aluminum alloy plates, and lowering one step at a time; and a cross bar is connected between two vertical chains to form a single ladder-step structure, which is located at the fourth row point of the lower floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, passing the bottom roller of the electric furnace body to the floor pit area, and receiving lifting force from the 4-channel lifting / lowering lift module, supporting 4 / 7 of the positions of the input aluminum alloy plates, and forming a stacked structure by raising and lowering one step at a time, and upon completion of solution treatment, the lifting force from the 4-channel lifting / lowering lift module Received,A fourth ladder-type stacking carrier section (750) that supports 4 / 7 of the positions of the stacked aluminum alloy plates and lowers them one step at a time; a fifth ladder-type stacking carrier section (760) that is located at the fifth row point of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, which is one side of the fourth ladder-type stacking carrier section, and is formed into a single ladder-type structure by connecting a horizontal bar between two vertical chains passing the bottom roller of the electric furnace body to the bottom pit area, receiving lifting power from the 4-channel lifting / lowering lift module to support 5 / 7 of the positions of the input aluminum alloy plates and raises them one step at a time to form a stacking structure, and upon completion of solution, receives lifting power from the 4-channel lifting / lowering lift module to support 5 / 7 of the positions of the stacked aluminum alloy plates and lowers them one step at a time; and the bottom floor of the bridge grid frame for the 4-channel lifting / lowering lift module, which is one side of the fifth ladder-type stacking carrier section. A sixth ladder-step stacking carrier (770) is positioned at the sixth row of the pit frame, and is formed into a single ladder-step structure by connecting a horizontal bar between two vertical chains passing the bottom roller of the electric furnace body to the bottom pit area, and receives lifting force from a 4-channel lifting / lowering lift module to support 6 / 7 of the positions of the input aluminum alloy plates, and is formed in a stacking manner by lifting one step at a time, and upon completion of solution, receives lifting force from the 4-channel lifting / lowering lift module to support 6 / 7 of the positions of the stacked aluminum alloy plates, and is lowered one step at a time; and a sixth ladder-step stacking carrier (770) is positioned at the seventh row of the lower bottom pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module, which is one side of the sixth ladder-step stacking carrier, and is formed into a single ladder-step structure by connecting a horizontal bar between two vertical chains passing the bottom roller of the electric furnace body to the bottom pit area, and receives lifting force from the 4-channel lifting / lowering lift module, and among the positions of the input aluminum alloy plates While supporting the 7 / 7 position,A tray side hot air convection type smart solution furnace device characterized by being composed of a seventh ladder-shaped stacked carrier part (780) that lowers the stacked aluminum alloy plates one step at a time to form a stacked structure, and when solution is completed, receives lifting force from a 4-channel lifting / lowering lift module to support the 7 / 7 position of the stacked aluminum alloy plates while lowering them one step at a time. Claim 10 In claim 9, the first ladder-shaped stackable carrier part (720) is located on the left side when viewed from the first row point of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module and is formed as a vertical chain structure, and comprises a first left vertical chain (721) that supports the first horizontal bar in the left direction, a first right vertical chain (722) that is located on the right side when viewed from the first row point of the bottom floor pit frame of the bridge grid frame for the 4-channel lifting / lowering lift module and is formed as a vertical chain structure to support the first horizontal bar in the right direction, and is located between the first left vertical chain and the first right vertical chain and is formed in the shape of a horizontal bar, supporting at 1 / 7 of the positions of the aluminum alloy plates being inserted, and is formed as a stackable structure by lifting one step at a time, and when the solution is completed, receives lifting force from the 4-channel lifting / lowering lift module and supports at 1 / 7 of the positions of the stacked aluminum alloy plates, and is formed as a stackable structure by lifting one step at a time A tray side hot air convection type smart solution electric furnace device characterized by being composed of a first horizontal bar (723) that lowers, a first left bottom pit frame (724) that is positioned in alignment with the first left vertical chain and is formed as a vertical frame structure up to the bottom pit portion of the electric furnace body, which guides the first left vertical chain and the first horizontal bar connected to the first left vertical chain to lower to the bottom pit portion of the electric furnace body, and a first right bottom pit frame (725) that is positioned in alignment with the first right vertical chain and is formed as a vertical frame structure up to the bottom pit portion of the electric furnace body, which guides the first right vertical chain and the first horizontal bar connected to the first right vertical chain to lower to the bottom pit portion of the electric furnace body. Claim 11 In claim 1, the smart control unit (900) has a temperature sensor unit (611) for a front zone solution space connected to one side of an input terminal, so that a sensing signal sensing the temperature of the front zone solution space is input, and a temperature sensor unit (621) for a middle zone solution space connected to one side of another input terminal, so that a sensing signal sensing the temperature of the middle zone solution space is input, and an overheating temperature sensor unit (622) connected to one side of another input terminal, so that a sensing signal sensing an overheating temperature of 550°C or higher is input, and a temperature sensor unit (631) for a rear zone solution space connected to one side of another input terminal, so that a sensing signal sensing the temperature of the rear zone solution space is input, and on one side of another input terminal A position sensor unit (830) is connected to receive a sensing signal that senses the position of a stacked tray case that advances in a pitch shape, and an air cylinder type lifting / lowering sliding unit (220) is connected to one side of an output terminal to generate the force of an air cylinder that lifts / lowers / slides and outputs an output signal that transmits it toward the door panel, and a front zone electric heater unit (310) is connected to one side of another output terminal to output an output signal that supplies a heat source of 520~550 ℃ to a tray side-passing type hot air convection forming module on one side of the front zone side wall of the central chamber solution space in the internal space of the electric furnace body, and a middle zone electric heater unit (320) is connected to one side of another output terminal to supply a tray side-passing type hot air convection forming module on one side of the middle zone side wall of the central chamber solution space in the internal space of the electric furnace body An output signal is output to supply a heat source of 520~550 ℃, and a rear zone electric heater unit (330) is connected to one side of another output terminal, and an output signal is output to supply a heat source of 520~550 ℃ to a tray side-passing hot air convection forming module on one side of the rear zone side wall of the central chamber solution space in the internal space of the electric furnace body.A tray-side hot air convection type smart solution electric furnace device characterized by being configured such that a 4-channel circulation fan unit is connected to one side of another output terminal to suck in hot air from inside and, by the force of the sucking, output an output signal to form an atmosphere that forcibly convects the hot air, which is the internal air of the electric furnace body, in a clockwise direction, and a main rotary motor (510) for a lifting lift is connected to one side of another output terminal to generate rotational force and output an output signal to transmit it to a reduction gear for the lifting lift. Claim 12 A step of raising and lowering the front door section by sliding it up and down (S10); a step of generating a lifting and lowering force of a 4-channel structure through a 4-channel lifting and lowering lift module and transmitting it toward the 7-channel stacked carrier assembly section (S20); a step of receiving the lifting force from the 4-channel lifting and lowering lift module through the 7-channel stacked carrier assembly section, receiving the aluminum alloy plate material, and raising it step by step to form a stacked structure (S30); a step of lowering and lowering the front door section by sliding it down to seal it, and generating heat of 520~550 ℃ through a tray side-passing hot air convection forming module via a side wall electric heater bank section (S40); and a step of forming convection through a tray side-passing hot air convection forming module so that hot air passes clockwise from the side wall electric heater bank section within the internal space of the electric furnace body, through the top, toward the tray side of the 7-channel stacked carrier assembly section located in the central chamber solution space section. In a method for a tray-side hot air convection type smart solution furnace comprising: a step (S50); a step (S60) of forming a solution atmosphere over the entire aluminum alloy plate formed in a stacked manner in a 7-channel stacked carrier assembly through a central chamber solution space; and a step (S70) of lowering the aluminum alloy plate, which has completed solution treatment, one step at a time from the 7-channel stacked carrier assembly and outputting it one by one to an external cooling process along a floor rail, while the lifting / lowering sliding rear door is lifted and slid open; wherein the step (S20) comprises: a step (S21) of generating rotational force through a main rotary motor for a lifting / lowering lift and transmitting it to a reduction gear for a lifting / lowering lift; a step (S22) of converting the rotational force received from the main rotary motor for the lifting / lowering sliding through a reduction gear for a lifting / lowering lift into low speed and high torque and transmitting it to a rotating joint bracket; and at the rotating joint bracket, the low speed and high torque from the reduction gear for the lifting / lowering lift A step (S23) of receiving power and simultaneously transmitting it to the first lifting / lowering drive unit and the second lifting / lowering drive unit that are gear-coupled, andA tray side hot air convection type characterized by comprising: a step (S24) of transmitting the lifting / lowering force to one side of the front left end of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly unit through a first lifting / lowering drive unit; a step (S25) of transmitting the lifting / lowering force to one side of the front right end of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly unit through a second lifting / lowering drive unit; a step (S26) of transmitting the lifting / lowering force to one side of the rear left end of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly unit through a third lifting / lowering drive unit; and a step (S27) of transmitting the lifting / lowering force to one side of the rear right end of the upper frame corner of the bridge grid frame for the 4-channel lifting / lowering lift module of the 7-channel stacked carrier assembly unit through a fourth lifting / lowering drive unit. Smart solution furnace method. Claim 13 delete Claim 14 In claim 12, the above step (S30) comprises: a step (S31) of transmitting the lifting and lowering force transmitted through the first lifting and lowering drive unit, the second lifting and lowering drive unit, the third lifting and lowering drive unit, and the fourth lifting and lowering drive unit of the 4-channel lifting and lowering lift module in the bridge grid frame for the 4-channel lifting and lowering lift module, as is, toward the first ladder-type stackable carrier unit, the second ladder-type stackable carrier unit, the third ladder-type stackable carrier unit, the fourth ladder-type stackable carrier unit, the fifth ladder-type stackable carrier unit, the sixth ladder-type stackable carrier unit, and the seventh ladder-type stackable carrier unit; a step (S32) of receiving the lifting and lowering force from the 4-channel lifting and lowering lift module in the first ladder-type stackable carrier unit, supporting 1 / 7 of the positions of the input aluminum alloy plate material, and lifting and lowering it step by step to form a stackable structure; and a step (S32) of receiving from the 4-channel lifting and lowering lift module in the second ladder-type stackable carrier unit A step (S33) of receiving lifting force to support 2 / 7 of the positions of the input aluminum alloy plate and raising it step by step to form a stacked structure; a step (S34) of receiving lifting force from a 4-channel lifting / lowering lift module in the third ladder-type stacked carrier section to support 3 / 7 of the positions of the input aluminum alloy plate and raising it step by step to form a stacked structure; a step (S35) of receiving lifting force from a 4-channel lifting / lowering lift module in the fourth ladder-type stacked carrier section to support 4 / 7 of the positions of the input aluminum alloy plate and raising it step by step to form a stacked structure; a step (S36) of receiving lifting force from a 4-channel lifting / lowering lift module in the fifth ladder-type stacked carrier section to support 5 / 7 of the positions of the input aluminum alloy plate and raising it step by step to form a stacked structure; and a step (S6) of a 6 ladder-type stacked carrier section, 4-channel Receiving lifting force from the lift module, it supports the 6 / 7 position of the input aluminum alloy plate, whileA tray side hot air convection type smart solution electric furnace method characterized by comprising: a step (S37) of forming a stacked structure by raising and lowering one step at a time; and a step (S38) of forming a stacked structure by raising and lowering one step at a time while receiving a lifting force from a 4-channel lifting / lowering lift module in the 7th ladder-type stacked carrier part, supporting the 7 / 7 position of the input aluminum alloy plate material. Claim 15 In claim 12, the above step (S40) is characterized by comprising: a step (S41) of supplying a heat source of 520~550 ℃ to a tray side-passing hot air convection forming module through a front zone electric heater section; a step (S42) of supplying a heat source of 520~550 ℃ to a tray side-passing hot air convection forming module through a middle zone electric heater section; and a step (S43) of supplying a heat source of 520~550 ℃ to a tray side-passing hot air convection forming module through a rear zone electric heater section. Claim 16 In claim 12, the above step (S50) is characterized by comprising: a step (S51) of forming an atmosphere that forces hot air, which is the internal air of the electric furnace body, to flow clockwise through a 4-channel circulation fan section by means of the suction force; a step (S52) of guiding the hot internal air to flow toward the plenum space section along the clockwise forced convection atmosphere generated from the 4-channel circulation fan section through a duct-type air passage section; a step (S53) of receiving the hot air of the clockwise forced convection atmosphere through the duct-type air passage section in the plenum space section, temporarily collecting it, and delivering it toward the side air guide section; and a step (S54) of dispersing and discharging the hot air collected in the plenum space section through a plurality of side air discharge holes to the entire side of the tray of a stacked tray case located in the central chamber solution space section through the side air guide section.

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