JP5158851B2 - Drying equipment - Google Patents

Description

  The present invention relates to a drying device, and more particularly, to a drying device used for the purpose of finishing foods and flowers such as vegetables, fruits, marine products, mushrooms, etc. into dried products with high commercial value without impairing their original fresh flavor and color. .

  As such a drying device, a device that performs a drying process at a high temperature in a short time has been frequently used, but particularly when drying vegetables and fruits at a high temperature, its original fresh flavor and color are impaired, In the case of seafood, there is a problem that the corrosion progresses.

For this reason, it has been proposed to perform drying using wind at room temperature (generally about 40 ° C. or less). For example, Patent Document 1 below proposes a drying device that generates random wind that is a random flow at regular time intervals in a drying chamber, and dries a material to be processed disposed in the drying chamber using this convection effect. Yes.
JP 2006-132855 A

  However, as a result of numerous experiments by the inventor, it has been found that even with the drying apparatus described in Patent Document 1, uniformization and efficiency of drying are not sufficiently promoted. In particular, when trying to dry as much food as possible at a time, it is desirable to arrange one or a plurality of tray racks in which trays on which materials to be processed are stacked in multiple stages are placed in the drying chamber. The material to be treated placed on the tray near the top of the tray rack is efficiently dried in a relatively short time, but the material to be treated on the tray from the middle to the bottom, especially near the center of each tray. It has been found that it takes a long time to dry the placed processing material. This is because air with relatively low temperature and high humidity tends to accumulate below the sealed drying room, and even if air is blown from a fan installed on the wall surface, low-temperature and high-humidity air will eventually remain in the lower area of the drying room. It is thought that it is because the effect of taking in high-temperature dry air into the lower region is thin because the stirring is merely performed. In addition, the fan installed on the ceiling moves the high-temperature dry air in the upper area downward, but this eventually promotes drying to the processed food on the tray near the uppermost level, and Even if it moves once to the lower region, it rises immediately due to its high temperature and returns to the upper region, so that the effect of promoting the drying of the material to be processed in the lower region could hardly be expected.

  Therefore, the problem to be solved by the present invention is to circulate the air dried at a relatively high temperature effectively throughout the drying chamber, and to the processing material in the lower area together with the processing material in the upper area of the drying chamber. It is an object of the present invention to provide a drying apparatus having a novel configuration capable of drying substantially uniformly.

  In order to solve this problem, the present invention according to claim 1 is directed to a drying apparatus including a drying chamber that accommodates a material to be processed and a plurality of fans provided on an interior surface of the drying chamber. A drying chamber is provided so that an upper end opening is disposed at a position adjacent to a blower opening of a fan installed nearby and a lower end opening is disposed near the bottom surface of the drying chamber, and an air passage extending from the upper end opening to the lower end opening is provided. A cross flow duct is attached to the wall of the drying chamber, and the temperature and humidity in the drying chamber are made uniform by forcibly moving the high-temperature drying air staying above the drying chamber to the bottom of the drying chamber through the cross flow duct. It is characterized by that.

  According to a second aspect of the present invention, in the drying apparatus according to the first aspect of the present invention, at least one of the side-arranged fans of the drying chamber against high-temperature dry air discharged from the lower end opening of the cross flow duct near the bottom of the drying chamber. The blast directed from the section toward the center of the room serves to prevent the high temperature dry air from moving upward.

  According to a third aspect of the present invention, in the drying apparatus according to the first or second aspect, the lower end opening of the cross flow duct is cut obliquely, and air from the lower end opening is discharged toward the center of the drying chamber. It is characterized by that.

  According to a fourth aspect of the present invention, there is provided the drying apparatus according to any one of the first to third aspects, further comprising an intake means for introducing outside air into the drying chamber and an exhaust means for discharging the air inside the drying chamber to the outside. It is characterized by providing.

  According to a fifth aspect of the present invention, in the drying apparatus according to the fourth aspect, the humidity inside the drying chamber is 10% to 20% lower than the outside air humidity by introducing the outside air by the intake means and exhausting by the exhaust means at the initial stage of the drying process. It is characterized by being lowered to humidity.

  The present invention according to claim 6 is characterized in that, in the drying apparatus according to claim 5, the outside air introduction by the intake means and the exhaust by the exhaust means are intermittently performed at predetermined intervals to suppress the temperature rise in the drying chamber. To do.

  The present invention according to claim 7 is the drying apparatus according to any one of claims 1 to 6, further comprising heating means and / or cooling means for maintaining the temperature in the drying chamber at a set temperature. .

  According to an eighth aspect of the present invention, in the drying apparatus according to any one of the first to seventh aspects, a tray rack capable of accommodating trays on which a material to be processed is placed in multiple stages is accommodated in the drying chamber. .

  The present invention according to claim 9 is the drying apparatus according to claim 8, wherein the tray has a mesh structure, and the object to be treated is leaned and held on an auxiliary member which can be inserted and attached to the mesh. To do.

  The present invention according to claim 10 is the drying apparatus according to claim 8 or 9, characterized in that a rotating mechanism for rotating the tray rack is attached.

  The present invention according to claim 11 is the drying apparatus according to claim 8 or 9, wherein the tray rack is rotatably installed and air flow having a certain direction is formed in the drying chamber by blowing air from the fan. And the tray rack is rotated.

According to a twelfth aspect of the present invention, in the drying apparatus according to any one of the first to seventh aspects, the rotating drum that stores the material to be processed is stored in the drying chamber.

  According to the present invention, since the crossflow duct having the upper end opening adjacent to the blower opening of the fan installed near or on the ceiling of the drying chamber and having the lower end opening near the bottom surface of the drying chamber is attached, High-temperature dry air that tends to stay above the drying chamber is forcibly moved near the bottom of the drying chamber via the crossflow duct. Thereby, the temperature and humidity in the drying chamber can be made uniform. Therefore, even when trays on which processing materials such as food are placed are accommodated in tray racks in multiple stages and placed in a drying chamber to perform drying processing, the lower region together with the processing materials in the upper region of the drying chamber The material to be treated can also be dried substantially uniformly, and drying unevenness in the drying chamber can be prevented.

  In addition, with respect to the high-temperature drying air released from the lower end opening of the cross flow duct near the bottom surface of the drying chamber, air blown from at least a part of the side-installation fan of the drying chamber toward the center of the room is It acts to prevent the upward movement of air. This further improves the effect of making the temperature and humidity in the drying chamber uniform.

  In addition, since the high-temperature drying air is discharged toward the center of the drying chamber from the lower end opening cut obliquely of the crossflow duct, the effect of making the temperature and humidity in the drying chamber uniform is further improved.

  Further, dehumidifying and drying can be performed more efficiently by using the outside air introduced into the drying chamber by the intake means and the exhaust by the exhaust means. Thereby, in the initial stage of the drying process, the humidity in the drying chamber can be lowered to a humidity that is 10 to 20% lower than the outside air humidity. Further, by intermittently introducing outside air and exhausting air at predetermined intervals, it is possible to enhance the dehumidifying effect while suppressing the temperature rise in the drying chamber.

  FIG. 1 is a front external view of a drying apparatus for producing dried foodstuffs such as vegetables, fruits, seafood and mushrooms as one embodiment of the present invention, FIG. 2 is a front interior view thereof, and FIG. FIG. 4 is a left side room view, FIG. 5 is a back side room view, and FIG. 6 is a ceiling room view.

  The drying apparatus 10 has a substantially cubic housing having doors 11a and 11b that can be opened and closed on the front, and the inside of the housing is a drying chamber 12. An air inlet 13 is further provided on the front of the housing, and a control panel 14 having a control circuit for controlling operations of the stirring fan 30, the exhaust fan 16, the dehumidifier 26, and the like based on a predetermined program is provided. . Various codes from the control panel 14 are wired to each controlled element via the wiring rack 15. Arbitrary numbers (four in the illustrated embodiment) of exhaust fans 16 are attached to an upper portion of one side surface (right side surface in FIG. 1) of the drying apparatus 10.

  In the drying apparatus 10, left and right front panels 17 and 18 are provided on the front surface except for the openings provided with the doors 11 a and 11 b, and further, a right side panel 19, a left side panel 20, a back panel 21, and a ceiling panel 22. The floor panel 23 is provided. The right front panel 18 is provided with the intake port 13 and the control panel 14, and an intake port cover 24 is attached to the indoor side of the intake port 13. Therefore, the air taken in from the intake port 13 by the operation of the exhaust fan 16 is discharged from the one end 24a of the intake port cover 24 along the right front panel 18 and discharged from the other end 24b along the left side panel 20. Then, it is diffused into the drying chamber 12.

  An air conditioner 25 for heating or cooling the temperature in the drying chamber 12 to a set temperature is installed near the ceiling of the left side panel 20. Reference numeral 26 denotes a dehumidifier. Reference numeral 45 is an outside air temperature / humidity sensor, and reference numeral 46 is a temperature / humidity sensor in the drying chamber 12. These sensor detection signals are input to the control circuit of the control panel 14. Reference numeral 47 is a photocatalyst device installed for measures against airborne bacteria in the drying chamber 12, air purification, and deodorization. Note that several layers of metal mesh coated with titanium oxide are also irradiated to the intake port 13 by irradiating an ultraviolet lamp (commercially available germicidal lamp) to sterilize the intake air by the photocatalyst.

  A large number of stirring fans 30 for stirring and flowing the air in the drying chamber 12 are installed on the panels 17 to 22 and the walls 11a and 11b constituting the drying chamber 12. All of these agitating fans 30 have the same structure, and a fan (not shown) is rotated by a motor 31 so that ambient air is taken in and discharged from a blower port 32. A flexible magnet 34 is fixed to the rear surface side of the mounting plate 33 of the stirring fan 30 to facilitate mounting and removal with respect to the metal panels 17 to 22 and the walls 11a and 11b, and the mounting position and mounting direction ( The orientation is freely movable and variable. In this embodiment, three inside the door 11a, five inside the door 11b, three inside the left front panel 17, five inside the right front panel 18 (see FIG. 2 above), a right side panel. 19 inside (see FIG. 3), 4 inside (see FIG. 4) inside the left side panel 20, 4 inside (see FIG. 5) inside the back panel 21, and 9 on the bottom surface of the ceiling panel 22 (see FIG. 3). A stirring fan 30 (see FIG. 6) is installed. Further, on the front side, two agitation fans 30 are also installed on the surface of the air inlet cover 24 (see FIG. 2), and on the right side panel 19 and the back panel 22 side, the cross flow ducts 40 (40a to 40e) are provided. Two stirring fans 30 are also installed in the lower part of the surface (see FIGS. 3 and 5).

  From the stirring fan 30 installed on the four peripheral surfaces (doors 11a and 11b, the inlet cover 24, the left and right front panels 17 and 18, the left and right side panels 19 and 20, the back panel 21 and the cross flow duct 40) surrounding the drying chamber 12 The air is blown in the substantially horizontal direction toward the room. As for the stirring fans installed on these four circumferential surfaces, it is preferable to install a large number of stirring fans in the lower area in the drying chamber 12. By doing in this way, the rise of the high-temperature dry air sent near the floor surface in the drying chamber 12 from the lower end opening 42 of the below-described crossflow duct 40 is horizontally blown from the stirring fan 30 installed in the lower area. The time during which high-temperature dry air stays in the lower region can be lengthened, and the uniformity of the room temperature and humidity can be further promoted.

  Referring to FIG. 7, cross flow duct 40 (40 a to 40 e) includes stirring fan 30 (30 a to 30 e and air blowing port 32) attached to ceiling panel 22 at a location close to right side panel 19 and back panel 22. It is placed below (installed face down). More specifically, the upper end opening 41 is adjacent to the lower air blowing port 32 of the stirring fans 30a to 30e (see FIGS. 3 and 5), and the lower end opening 42 near the floor panel 23 faces the indoor side. The left and right flanges 43 and 43 are fixed to the panels 19 and 21 by screws or the like.

  A material to be dried is put into the drying chamber 12. In this embodiment, an arbitrary number of tray racks capable of accommodating trays on which the material to be treated are placed in multiple stages are set on the floor panel 23. To do. An example of such a tray rack 50 is shown in FIG. 8, along a pair of opposing side surfaces (these surfaces are preferably also substantially open for better air passage) 51a, 51b. Thus, support pieces 52 are formed to protrude inward at a predetermined height interval. The tray rack 50 is mounted on a cart 53 configured as a single body or as a separate body, and the total height including the cart 53 is the same as that of the ceiling panel 22 when the tray 53 is disposed on the floor panel 23 of the drying chamber 12. The height is set so as not to interfere with the stirring fan 30 or the like.

  In this tray rack 50, the upper and lower adjacent ridges 52, 52 are tray storage stages, and a tray 60 having a configuration as shown in FIG. 9 can be stored in each tray storage stage so as to be drawable. The tray 60 is a flat mesh structure 61 formed of synthetic resin, metal, or the like as a material, and both left and right edges are supported by support pieces 52 and 52 in any tray storage stage of the tray rack 50. Thus, it can be stored in the tray storage stage.

  Since the tray 60 has a mesh structure, it does not hinder the flow of wind in the vertical direction (particularly hot air that is going to rise), and the peripheral edge portion 62 is also flat and has a shape that does not have a rising portion. The flow of wind in the left and right direction is not hindered. Therefore, the material to be treated on the tray 60 is well blown and the drying efficiency can be increased.

  The tray 60 may be used such that the material to be processed is directly placed thereon, but more preferably, an auxiliary member 63 configured as shown in FIG. 10 is used. The auxiliary member 63 is provided with a large number of comb-like protrusions 65 at predetermined intervals in the width direction on the elongated substrate 64 at a predetermined angle α (for example, α = 120 degrees). The mesh structure 61 has a configuration in which a large number of locking projections 66 that can be fitted to the mesh are provided at predetermined intervals. The engaging projection 66 of the auxiliary member 63 is fixed to the tray 60 by fitting it into the tray mesh structure 61, and the material to be treated is arranged so as to lean against the comb-like projection 65 inclined obliquely. , Drying process. Any number of auxiliary members 63 can be mounted on the tray mesh structure 61 in any direction in the vertical and horizontal directions.

  When the material to be treated is placed directly on the tray 60, it is difficult to receive wind from the side especially in the case of flat foods, etc., and the mesh of the tray 60 is blocked, so that the drying efficiency is lowered. However, if the material to be processed is stood diagonally using such an auxiliary member 63, it becomes easier to receive wind from the side, and the blockage to the mesh can be minimized, If a sufficient space is maintained between the auxiliary members 63, the above-described advantage of the mesh structure is not hindered, and sufficient drying efficiency can be ensured.

  An example of the operation of the drying apparatus 10 described above will be described. In order to dry the processed material such as food in the drying chamber 12, the humidity in the drying chamber 12 is preferably about 0 to 20%. Moreover, although the temperature in the drying chamber 12 is influenced also by external temperature, generally it is preferable to set it as about 30-50 degreeC. In these ranges, desired humidity and temperature are input and set on the touch panel of the control panel 14. For example, when the outside air temperature is 20 ° C. and the humidity is 65%, the processing temperature is set to 40 ° C. and the humidity is set to 0%. The temperature / humidity of the outside air is detected by the outside air temperature / humidity sensor 45, the temperature / humidity in the drying chamber 12 is detected by the indoor temperature / humidity sensor 46, and the outside air and the temperature / humidity detected by these sensors are controlled. It is displayed on the display of the board 14.

  Since the set temperature is higher than the outside air temperature and the set humidity is usually lower than the outside air humidity, a heater (built in the air conditioner 25 or dehumidifier 26) is installed to increase the temperature in the drying chamber 12, and the room humidity In order to reduce the temperature, the dehumidifier 26 is installed. Regarding the temperature, the exhaust fan 16, the agitating fan 30, the dehumidifier 26, and the illumination (not shown) are effectively used when they are operating. Since the room temperature can be raised, there is almost no need to operate the heater except when the apparatus is started in the severe cold season when the outside air temperature is 25 ° C. lower than the set temperature.

  In the present invention, the exhaust fan 16 is turned on / off in order to more efficiently control the temperature and humidity in the drying chamber 12. That is, in the initial stage of the drying process, the inside of the drying chamber 12 is generally in a humid state than the outside air, and in this state, it is more effective to introduce outside air actively and blow it away with outside air than relying on the dehumidifying effect by the dehumidifier 26. Can be removed. However, if the exhaust fan 16 is kept running, the temperature in the drying chamber 12 is excessively lowered and the drying efficiency is lowered.

  Therefore, for example, in the case of the outside temperature / humidity and the set temperature / humidity described above, when the processing material such as the food to be dried is introduced into the drying chamber 12 and the doors 11a and 11b are tightened and sealed, The temperature gradually increases, and the humidity also increases. Here, when the exhaust fan 16 is turned on for about 1 to 2 minutes and outside air is introduced from the intake port 13 and exhausted from the room, the indoor humidity is about 10 to 20% of the outside air humidity (that is, about 45 to 55% in this example). But at the same time the temperature falls to 32-35 ° C. Therefore, by repeating the ON / OFF of the exhaust fan at intervals of about 1 to 2 minutes, the indoor humidity is finally lowered by about 10 to 20% from the outside air humidity to about 45 to 55% in this example. At the same time, the temperature drop in the room is suppressed.

  More specifically, a humidity condition and a temperature condition for forcibly operating the exhaust fan 16 are set in the control panel 14. The humidity condition here is, for example, 45%, and the temperature condition is set to the above-mentioned drying processing set temperature (40 ° C.) plus about 1-2 ° C. When both the humidity and temperature are above the set values, and when either is above the set values, the exhaust fan 16 is operated to repeat ON / OFF at intervals of 1 to 2 minutes. When it falls below the set value, the exhaust fan 16 is stopped. When the indoor humidity falls to about -20% outside air humidity, the dehumidifying effect by the exhaust fan 16 becomes close to the limit. At this time, the initial drying process by the exhaust fan 16 is finished and the next drying process is performed. Migrate to

  The next drying process is performed by operating the dehumidifier 26 and the stirring fan 30. However, if the dry air from the dehumidifier 26 or the air that is stirred and circulated by the stirring fan 30 remains on the material to be treated, only the surface of the material to be treated is dried and the internal moisture is less likely to be released. In order to prevent this and to exhibit the fumigation effect, it is preferable that the dehumidifier 26 and the stirring fan 30 are turned ON / OFF at predetermined intervals (for example, about several minutes). Further, when the inside of the drying chamber 12 is hermetically sealed, the temperature may rise from the set temperature due to heat radiation from various devices such as the dehumidifier 26 and the stirring fan 30. When this is detected, the exhaust fan By temporarily operating 16, outside air is taken from the inlet 13 and used for cooling. If the temperature does not decrease even when outside air is taken in, such as during the summer, the air conditioner 25 is activated and cooled to maintain the set temperature. In addition, if humid outside air is taken into the place where the indoor humidity is decreasing and drying is proceeding, the indoor humidity will be temporarily increased. However, if the intake air is about 1 to 2 minutes, the dehumidifier 26 will immediately dehumidify it. So it is not a big problem.

  During the drying process at this stage, all the agitation fans 30 may be turned on all the time, but random air is generated by turning the agitation fans 30 on and off at different times for each installation surface. However, it is preferable to make the temperature and humidity uniform throughout the room of the drying chamber 12 and increase the drying efficiency. Further, there is an advantage that the temperature rise due to heat radiation and the operation cost are suppressed. The time difference operation of the agitating fan is described in detail in Patent Document 1, and is not directly related to the subject of the present invention. However, in order to ensure the above-described action of the cross flow duct 40 (40a to 40d), while the stirring fans 30a to 30d installed on the ceiling adjacent to the upper end opening 41 of the cross flow duct 40 are ON, A stirrer fan (position substantially equal to or higher than the height position of the lower end opening 42) that contributes to hindering (lowering the rising speed) the air released from the lower end opening 42 of the flow duct 40 toward the center of the room. It is preferable to control so that the stirring fan installed on the wall is also turned on at the same time.

  The embodiment described above is not limited, and various modifications can be made without departing from the scope of the present invention.

  For example, instead of placing the material to be processed on the tray 60 and stacking on the tray rack 50 and drying in the drying chamber 12, a rotating drum 70 as shown in FIG. A configuration may be adopted in which the rotating drum 70 containing the material 71 to be processed is supported by the support base 77 and the support legs 78 and rotated by the motor 72 around the rotation shaft 79. In this case, the rotating drum 70 may be continuously rotated in one direction. However, in the rotating mechanism shown in FIG. 11, a servo motor is used as the motor 72, and one end 74a of the belt 74 wound around the output shaft 73 is rotated. By engaging with the first locking projection 75 of the drum 70, wrapping around more than one turn and locking the other end 74b with the second locking projection 76, the rotating drum 70 is rotated forward and backward within a predetermined angle range. I try to let them. According to this illustrated rotating mechanism, the rotating drum 70 has a maximum rotation angle of 252 degrees between the clockwise rotation limit position shown in FIG. 11 (b) and the counterclockwise rotation limit position shown in FIG. 11 (c). Repeat forward and reverse rotation.

  Further, even when the trays 60 on which the materials to be processed are stacked on the tray rack 50 and drying processing is performed in the drying chamber 12 as in the above-described embodiment, if the tray rack 50 is rotated, drying depending on the place is performed. Can be made uniform without variation. For example, as shown in FIG. 12, a mechanism is employed in which the tray rack 50 is mounted on a turntable 54 and the output of a motor 55 is transmitted to the turntable 54 by a belt 56 or the like. In this case as well, the rotary table 54 may be continuously rotated in one direction, but the rotary table similar to the rotary mechanism used for rotating the rotary drum 70 forward and backward within a predetermined angle range in FIG. 11 is used. It can be employed as a rotation mechanism for 54.

  Further, an air flow having a certain direction may be formed in the drying chamber 12 by blowing air from the stirring fan 30, and thereby the tray rack 50 may be rotated. According to this configuration, the tray rack 50 can be rotated by simply placing the tray rack 50 on the turntable 54 so as to be rotatable without having to lay a rotation mechanism. You can go down. For example, by driving the agitating fan 30 provided horizontally in FIG. 6, a horizontal air flow in a certain direction is generated in the drying chamber 12, and the tray rack 50 is rotated in a predetermined direction by this air flow. it can. It is also possible to rotate the tray rack 50 in a predetermined direction using the flow of air discharged from the lower end opening 42 of the cross flow duct 40 toward the center of the room. It can be easily grasped by experimenting under different conditions that the stirring fan 30 at which position can be driven to generate an air flow sufficient to rotate the tray rack 50. Regarding the rotational speed of the tray rack 50, it is possible to experimentally grasp the conditions necessary to give a desired speed. Based on these experimental results, a control condition for giving a required rotation to the tray rack 50 while sufficiently exhibiting the drying effect is determined, and the stirring fan 30 is driven under the control condition.

  Note that when all the stirring fans 30 are stopped to give the fumigation effect described above, the rotation of the tray rack 50 also stops, but the tray rack 50 does not necessarily have to be rotated over the entire time during the drying process. Even when the tray rack 50 is repeatedly rotated / stopped in accordance with the driving / stopping of 30, the effect of drying the material accommodated in the tray rack 50 substantially uniformly can be sufficiently exerted.

  Moreover, although the drying apparatus 10 of the above-mentioned embodiment has the floor surface panel 23, you may omit this and may comprise a drying apparatus.

  Moreover, since the drying apparatus 10 of the above-mentioned embodiment performs dehumidification using a dehumidifier in order to perform a drying process in the temperature range (30-50 degreeC) near normal temperature, the inside of the drying chamber 12 is 60 degreeC, for example. In the case of heating to such a high temperature, the drying process can be performed in a relatively short time without performing dehumidification by the dehumidifier. In this case, the drying process can be performed without operating the dehumidifier. Or a device configuration in which the dehumidifier is omitted.

1 is a front external view of a drying device according to an embodiment of the present invention. It is a front room view of this drying device. It is a right side room interior view of this drying apparatus. It is a left side room interior view of this drying apparatus. It is a back room interior view of this drying apparatus. It is a ceiling room figure of this drying device. It is the front view (a) and side view (b) which show the installation state of the cross flow duct in this drying apparatus. It is a front view of the tray rack used suitably in this drying apparatus. It is a top view of the tray used for the tray rack of FIG. It is the front view (a) and side view (b) of the auxiliary member used in order to place a processed material on the tray of FIG. It is a schematic block diagram in the case of accommodating a to-be-processed material in a rotating drum and performing a drying process as other embodiment of this invention. It is a schematic block diagram in the case of performing a drying process by mounting a tray rack on a turntable as still another embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Drying apparatus 12 Drying room 13 Inlet 14 Control panel 16 Exhaust fan 17, 18 Front panel 19, 20 Side panel 21 Rear panel 22 Ceiling panel 23 Floor panel 25 Air conditioner 26 Dehumidifier 30 Stirring fan 40 Cross flow duct 45 Outside temperature Humidity sensor 46 Indoor temperature / humidity sensor 47 Photocatalytic device 50 Tray rack 54 Rotating table 60 Tray 70 Rotating drum 71 Material 72 Motor (servo motor)
74 Belt 75, 76 Belt end locking projection

Claims (12)

In a drying apparatus comprising a drying chamber for storing a material to be processed and a plurality of fans provided on the interior surface of the drying chamber, the upper end is located at a position adjacent to the fan blower installed at or near the ceiling of the drying chamber. An opening is arranged and a lower end opening is arranged near the bottom of the drying chamber, and a cross flow duct is attached to the wall of the drying chamber so as to provide an air passage from the upper end opening to the lower end opening, and stays above the drying chamber. A drying apparatus characterized in that the temperature and humidity in a drying chamber are made uniform by forcibly moving high-temperature drying air to the vicinity of the bottom surface of the drying chamber through a cross flow duct. With respect to the high-temperature dry air released from the lower end opening of the cross flow duct near the bottom of the drying chamber, the air blown from at least a part of the side-arranged fan of the drying chamber toward the center of the room rises and moves. The drying apparatus according to claim 1, wherein the drying apparatus has an effect of preventing the above. The drying apparatus according to claim 1 or 2, wherein the lower end opening of the cross flow duct is cut obliquely, and air from the lower end opening is discharged toward the center of the drying chamber. The drying apparatus according to any one of claims 1 to 3, further comprising an intake means for introducing outside air into the drying chamber and an exhaust means for discharging the air in the drying chamber to the outside. 5. The drying apparatus according to claim 4, wherein in the initial stage of the drying process, outside air is introduced by the intake means and exhausted by the exhaust means, and the humidity in the drying chamber is lowered to 10-20% lower than the outside air humidity. 6. The drying apparatus according to claim 5, wherein an outside air introduction by the intake means and an exhaust by the exhaust means are intermittently performed at predetermined intervals to suppress a temperature rise in the drying chamber. The drying apparatus according to claim 1, further comprising a heating unit and / or a cooling unit for maintaining the temperature in the drying chamber at a set temperature. The drying apparatus according to any one of claims 1 to 7, wherein a tray rack capable of accommodating trays on which processing objects are placed in multiple stages is accommodated in the drying chamber. 9. The drying apparatus according to claim 8, wherein the tray has a mesh structure, and the material to be treated is stood and held on an auxiliary member that can be inserted and attached to the mesh. The drying apparatus according to claim 8 or 9, further comprising a rotation mechanism for rotating the tray rack. The drying system according to claim 8 or 9, wherein the tray rack is rotatably installed, and the tray rack is rotated by a flow of air having a certain direction formed in the drying chamber by blowing air from a fan. apparatus. The drying apparatus according to any one of claims 1 to 7, wherein a rotating drum that accommodates a material to be treated is accommodated in a drying chamber.

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