JP2020048471A - System for producing laver - Google Patents

Abstract

To provide a system for producing laver, capable of uniformly drying well a laver dough and preventing dried laver from causing shrinkage and unevenness.SOLUTION: In a system (S) for producing laver including a drying chamber (12) installed inside a building (2) to dry a spread laver dough by heated air while conveying it along a conveying path, a heater (13) for feeding the heated air to the drying chamber (12), and a heating device (16) for heating air outside the building (2) and feeding it to the heater (13), the heating device (16) is controlled so as to be gradually raised in an output in a state (initial operation state) where the laver dough is present only at an upstream side of the conveying path inside the drying chamber (12), then maximized in the output in a state (normal operation state) where the laver dough is present all over the conveying path inside the drying chamber (12), and then gradually lowered in the output in a state (final operation state) where the laver dough is present only at a downstream side of the conveying path inside the drying chamber (12).SELECTED DRAWING: Figure 4

Description

  TECHNICAL FIELD The present invention relates to control of a laver production system for producing a dried laver by drying paper laver dough.

  2. Description of the Related Art Conventionally, edible dried laver has been manufactured by drying laver dough containing a large amount of water into a rectangular sheet shape. For the production of this dried laver, a laver production system including a laver production machine installed inside a building and a heating machine installed outside the building is widely used.

  In this laver production system, a drying chamber installed inside the building and drying the dried laver dough with heated air while transporting it along a transport path, a heating machine for supplying heated air to the drying chamber, and a heating machine And a heater for heating and supplying air outside the building (for example, see Patent Document 1).

  And, in the conventional laver production system, after starting the lamination of the laver dough, the operation of the heating machine is started, the heating machine is operated at a constant output, and after the lamination of the laver dough is completed, The operation of the heater has been stopped.

JP-A-2017-127198

  However, in the above-mentioned conventional laver production system, the state of the temperature and humidity inside the drying chamber is rapidly changed by operating the heating machine at a constant output at a stretch after starting the production of the laver dough. As a result, there is a possibility that the dried seaweed dough may be poorly dried and shrinkage or unevenness of the dried seaweed may occur, thereby impairing the commercial value of the dried seaweed.

  In addition, in the above-mentioned conventional laver production system, since the temperature and humidity of the outside air change depending on the weather condition, when the heating device is operated at a constant output, the inside of the drying chamber is changed due to the change in the temperature and humidity of the outside air. The state changes to the temperature and humidity, etc., which may cause poor drying of the nori dough, resulting in shrinkage or unevenness of the dried nori, thereby impairing the commercial value of the dried nori.

  Furthermore, in the above-mentioned conventional laver production system, even when the heating machine is stopped at a stretch after finishing the laver dough-making, the state such as the temperature and humidity inside the drying chamber suddenly changes, and Poor drying of the dough may cause shrinkage or unevenness of the dried laver, which may impair the commercial value of the dried laver.

  Therefore, in the present invention according to claim 1, a drying chamber that is installed inside a building and that dries the dried laver dough with heated air while being transported along the transport path, and a heating chamber that supplies heated air to the drying chamber. Nori production system that has a heating device and a heating device that heats and supplies air outside the building to the heating device, in a state where the nori dough exists only on the upstream side of the transport path inside the drying chamber ( In the initial operation state), the output of the heater is gradually increased, and then, in a state where the laver dough is present in all of the transport paths inside the drying chamber (normal operation state), the output of the heater is increased. Then, in a state where the laver material is present only on the downstream side of the transport path inside the drying chamber (final operation state), the output of the heater is controlled to be gradually lowered.

  In the invention according to claim 2, in the invention according to claim 1, the maximum value of the output of the heater in the normal operation state is changed according to the outside temperature of the building in the initial operation state. Then, control is performed so that the output of the heater is gradually increased in the initial operation state so as to become the maximum value after the change.

  Further, in the present invention according to claim 3, in the present invention according to claim 1 or 2, the maximum value of the output of the heater in the normal operation state is determined by the temperature outside the building in the normal operation state. , And control is performed such that the output of the heater is gradually decreased in the final operation state so as to have the maximum value after the change.

  The present invention has the following effects.

  That is, in the present invention, a drying chamber installed inside a building and drying the heated laver dough with heated air while transporting the dried laver dough along a transport path, a heating machine for supplying heated air to the drying chamber, and a heating machine Nori production system having a heating device for heating and supplying the air outside the building to the seaweed in a state where the seaweed dough exists only on the upstream side of the transport path inside the drying chamber (initial operation state) Then, gradually increase the output of the heating device, and then, in a state where the seaweed dough is present in all of the transport paths inside the drying chamber (normal operation state), maximize the output of the heating device, In the state where the laver material is present only on the downstream side of the transport path inside the drying chamber (final operation state), the output of the heating machine is controlled to gradually decrease, so the initial operation Inside the drying room from the state to the final operation state Because the state can be inhibited from changing rapidly, can be satisfactorily homogeneously dry seaweed dough, the occurrence of dry seaweed shrinkage or unevenness can be prevented.

  In particular, the maximum value of the output of the heater in the normal operation state is changed in accordance with the temperature outside the building in the initial operation state, and the heater in the initial operation state is changed to the changed maximum value. If the output is controlled so as to gradually increase, even if the temperature outside the building changes in the middle of the initial operation state, the state inside the drying chamber is prevented from changing rapidly. Therefore, the laver material can be dried uniformly and satisfactorily, and shrinkage and unevenness of the dried laver can be prevented.

  Further, the maximum value of the output of the heater in the normal operation state is changed in accordance with the outside temperature of the building in the normal operation state, and the heater in the final operation state is changed to the changed maximum value. If the output is controlled so as to gradually decrease, even if the temperature outside the building changes during the normal operation state, it is possible to suppress a sudden change in the state inside the drying chamber. Therefore, the laver material can be dried uniformly and satisfactorily, and shrinkage and unevenness of the dried laver can be prevented.

Explanatory drawing which shows a laver manufacturing system. Explanatory drawing which shows a laver manufacturing machine. Explanatory drawing which shows the output of a heater. Explanatory drawing which shows the output of a heater.

  Hereinafter, a specific configuration of the laver production system according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, in the laver production system S, a laver production machine 1 is installed inside a building 2, and the laver fabric is dried by the laver production machine 1 to produce a rectangular sheet-shaped dried laver. It is.

  As shown in FIGS. 1 and 2, the laver production machine 1 has a configuration in which a papermaking device 3 for producing laver dough and a drying device 4 for drying the laver dough are connected in front and back.

  The papermaking apparatus 3 incorporates an endless transport mechanism 7 for transporting a cage frame 6 in which a plurality of laver cages 5 are arranged side by side. A laminating mechanism 8 for laminating laver dough, a suction dehydrating mechanism 9 for dehydrating laver dough by suction, a press dewatering mechanism 10 for dehydrating laver dough by pressing a sponge, and drying from laver cage 5 A peeling mechanism 11 for peeling the laver is arranged in order.

  Then, the papermaking apparatus 3 forms the laver material on the laver cage 5 with the papermaking mechanism 8 while transporting the laver cage 5 together with the cage frame 6 by the transport mechanism 7, and the suction dehydration mechanism 9, the press dehydration mechanism 10, and the like. The dehydration of the laver material is carried out, and then the cage frame 6 is transferred to the drying device 4 and the cage frame 6 after being dried by the drying device 4 is received again. The peeling mechanism 11 peels the dried laver from the laver cage 5. It is configured as follows.

  The drying device 4 is provided with a rectangular box-shaped heater 13 extending in the front-rear direction on the right side of a rectangular box-shaped drying chamber 12 extending in the front-rear direction.

  Inside the drying chamber 12, transport mechanisms 14, 15 for transporting the gantry 6 are housed vertically. The pouring frame 6 (seaweed dough) is delivered from the upper rear end of the transport mechanism 7 of the papermaking apparatus 3 at the upper front end of the upper transport mechanism 14 and is moved from the upper front end to the upper rear end of the upper transport mechanism 14. Transported from the lower rear end to the lower front end, transferred from the upper transport mechanism 14 to the lower transport mechanism 15, and moved from the upper front end of the lower transport mechanism 15 to the upper rear end. After being conveyed to the end, it is conveyed from the lower rear end to the lower front end, and is again delivered to the lower rear end of the conveying mechanism 7 of the papermaking apparatus 3. As a result, a transport path for the pens 6 (seaweed dough) is formed inside the drying chamber 12 (a path through which the pens 6 (seaweed dough) reciprocates two times inside the drying chamber 12).

  The heater 13 is provided with a heater 16 for heating and supplying air (outside air) outside (outdoor) of the building 2. The heater 16 has a main body installed outside the building 2 and supplies outside air heated by the main body to the heater 13 from a duct. Thereby, the heater 13 heats the air (inside air) inside (indoor) of the building 2 and the outside air heated by the heater 16 and supplies the air to the drying chamber 12.

  The drying device 4 transports the sea laver 5 together with the cage frame 2 in the drying chamber 12 two times by the transport mechanisms 14 and 15, and uses the heated air supplied from the heating device 13 during this time. The dried seaweed dough is dried.

  In the laver production system S, a control device 17 is provided, and the control device 17 controls each unit. Sensors 18 and 19 for detecting the temperature and humidity of outside air and inside air are connected to the control device 17.

  When the operation of the laver production machine 1 is started by the control device 17, the laver dough produced in the laver cage 5 by the laminating mechanism 8 is sequentially transferred to the inside of the drying chamber 12 after dehydration, and transported inside the drying chamber 12. After being transported along the path, it is transferred to the peeling mechanism 11.

  Therefore, immediately after the start of the operation of the laver production machine 1 (after a lapse of a predetermined time from the start of the papermaking by the papermaking apparatus 3), the laver dough is present only on the upstream side of the transport path inside the drying chamber 12 ( (The initial operation state), and after that, the laver dough is present in all the transport routes inside the drying chamber 12 (normal operation state), and immediately before the end of the operation of the laver manufacturing machine 1 (the papermaking apparatus 3). (After a lapse of a predetermined time from the end of the papermaking by the above), the laver dough is present only on the downstream side of the transport path inside the drying chamber 12 (final operation state). In the normal operation state, the amount of the nori dough is larger than in the initial operation state or the final operation state, and the amount of water inside the drying chamber 12 is larger. Further, in the initial operation state, the moisture content in the drying chamber 12 is smaller than in the final operation state because there is a portion where nori dough is not transported at all.

  In the laver production system S, the control device 17 drives and controls the heating device 16 after the operation of the laver production machine 1 starts. At that time, as shown in FIG. 3, the control device 17 gradually increases the output of the heater 16 in the initial operation state, and thereafter, maximizes the output of the heater 16 in the normal operation state, Thereafter, in the final operation state, the output of the heater 16 is controlled to gradually decrease.

  Then, as shown in FIG. 4, the maximum value of the output of the heater 16 in the normal operation state is determined based on the outside temperature of the building 2 detected by the sensor 18 in advance before the initial operation state. When the outside temperature of the building 2 changes in the operating state, the maximum value is changed accordingly, and the output of the heater 16 is gradually increased in the initial operating state so as to become the changed maximum value. Control. In addition, the maximum value of the output of the heater 16 in the normal operation state is also changed in accordance with the change in the temperature outside the building 2 in the normal operation state, and becomes the maximum value after the change. In the final operation state, the output of the heater 16 is controlled to gradually decrease.

  For example, as shown in FIG. 3, the control device 17 starts the papermaking by the papermaking device 3 from time T0, and at that time, the temperature and humidity inside and outside the building 2 are detected by the sensors 18 and 19 in advance. The maximum value M1 of the output of the heater 16 is determined based on the temperature and the humidity. Then, the control device 17 starts driving the heater 16 at time T1 at which the initial operation state is set. At that time, the control device 17 sets the output of the heater 16 at time T1 at which the initial operation state was set to 0, and the output of the heater 16 at time T2 at which the initial operation state changes to the normal operation state is the maximum. The output of the heater 16 is gradually increased so as to be the value M1. Thereafter, in the normal operation state, the control device 17 maintains the output of the heating device 16 at the maximum value M1, and performs the final operation after a predetermined time has elapsed from the time T3 when the papermaking by the papermaking device 3 was completed. The output of the heater 16 is gradually lowered from the time T4 when the state is changed, and the driving of the heater 16 is stopped so that the output of the heater 16 at the time T5 when the terminal operation state ends is 0. .

  When the temperature and humidity inside and outside the building 2 detected by the sensors 18 and 19 and the difference between inside and outside (the difference between the inside temperature and humidity and the outside temperature and humidity) detected by the sensors 18 and 19 fluctuate within a predetermined range, The above-described control is performed. When the temperature and humidity inside and outside the building 2 and the difference between the inside and outside of the building 2 detected by the sensors 18 and 19 fluctuate beyond a predetermined range, the following control is performed.

  For example, when the temperature and humidity inside and outside the building 2 and the difference between inside and outside of the building 2 detected by the sensors 18 and 19 at time T6 during the initial operation state fluctuate beyond a predetermined range, the control device 17 Once again, the maximum value M2 of the output of the heater 16 is determined again, and from there, the output of the heater 16 is adjusted so that the output of the heater 16 at the time T2 when the normal operation state is changed becomes the maximum value M2. The temperature is gradually increased to maintain the output of the heater 16 at the maximum value M2 in the normal operation state.

  When the temperature and humidity inside and outside the building 2 detected by the sensors 18 and 19 and the difference between the inside and outside detected by the sensors 18 and 19 at a time T7 during the normal operation state fluctuate beyond a predetermined range, the control device 17 Once again, the maximum value M3 of the output of the heater 16 is determined again, and from there, the output of the heater 16 is gradually increased so that the output of the heater 16 becomes the maximum value M3. Then, the output of the heating device 16 is maintained at the maximum value M3, and the heating device 16 is started at a time T4 when a predetermined time elapses from the time T3 when the papermaking by the papermaking device 3 is completed and the terminal device enters the terminal operation state. Is gradually lowered, and the driving of the heater 16 is stopped so that the output of the heater 16 at time T5 at which the final operation state ends is 0.

  In the above description, the output of the heater 16 is increased or decreased linearly, but may be increased or decreased in a curved line. Further, the driving of the heater 16 is started from the time T1 at which the initial operation state is reached, but the invention is not limited to this. The operation of the heating device 16 may be started from the time when the number of sheets has been manufactured). Further, the output of the heater 16 is set to the maximum value M1 (M2) at the time T2 when the normal operation state is set, but the present invention is not limited to this, and a predetermined time has elapsed from the time T0 of the papermaking start ( Alternatively, the output of the heating device 16 may be set to the maximum value M1 (M2) at the time when a predetermined number of sheets are produced by the papermaking apparatus 3). Further, the output of the heating device 16 is decreased from the time T4 when the final operation state is reached, but the invention is not limited to this, and a predetermined time has elapsed from the time T0 of the papermaking start (or a predetermined time The output of the heating device 16 may be lowered from the time when the number of sheets is manufactured). Further, the output of the heater 16 is set to the maximum value M1 (M3) at the time T4 when the normal operation state ends, but is not limited thereto, and a predetermined time has elapsed from the time T0 of the papermaking start ( Alternatively, the output of the heater 16 may be set to the maximum value M1 (M3) at the time when a predetermined number of sheets have been produced by the papermaking apparatus 3). It is also desirable to increase the maximum value of the output of the heater 16 when the temperature outside the building 2 decreases or when the temperature difference between the inside and outside increases. When the temperature rises or when the difference between the inside and outside humidity increases, it is more preferable not to increase the maximum value of the output of the heater 16 or to suppress the increase.

  As described above, the laver manufacturing system S is installed inside the building 2 and includes a drying chamber 12 for drying the dried laver dough with heated air while transporting the produced laver dough along the transport path. It has a configuration in which a heater 13 for supplying heated air and a heater 16 for supplying air to the heater 13 by heating air outside the building 2 are provided.

  Moreover, the laver production system S gradually increases the output of the heating device 16 in a state where the laver material is present only on the upstream side of the transport path inside the drying chamber 12 (initial operation state). In a state where the laver dough is present in all the transport paths inside the drying chamber 12 (normal operation state), the output of the heating device 16 is maximized, and then the downstream side of the transport path inside the drying chamber 12 is used. In a state in which nori dough is present only (final operation state), the output of the heating device 16 is controlled to gradually decrease.

  Therefore, in the laver production system S, it is possible to suppress a sudden change in the state of the inside of the drying chamber 12 from the initial operation state to the final operation state, and thus it is possible to dry the laver dough satisfactorily and uniformly. In addition, shrinkage and unevenness of the dried laver can be prevented.

  Further, the seaweed production system S changes the maximum value of the output of the heating device 16 in the normal operation state according to the outside temperature of the building 2 in the initial operation state, and sets the maximum value to the changed maximum value. In the operating state, the output of the heater 16 is controlled to gradually increase.

  Therefore, in the laver production system S, even if the temperature outside the building 2 changes in the middle of the initial operation state, it is possible to suppress the abrupt change in the state inside the drying chamber 12. Can be satisfactorily and uniformly dried, and the occurrence of shrinkage and unevenness of dried nori can be prevented.

  Further, the laver production system S changes the maximum value of the output of the heating device 16 in the normal operation state according to the temperature outside the building 2 in the normal operation state, and ends the operation so that the maximum value after the change is obtained. In the operating state, the output of the heater 16 is controlled to gradually decrease.

For this reason, in the laver production system S, even if the temperature outside the building 2 changes during the normal operation state, it is possible to suppress a sudden change in the internal state of the drying chamber 12. Can be satisfactorily and uniformly dried, and the occurrence of shrinkage and unevenness of dried nori can be prevented.

S Nori production system 1 Nori production machine 2 Building 3 Paper making device 4 Drying device 5 Seaweed cage 6 Cradle frame 7 Transport mechanism 8 Drawing mechanism 9 Suction dehydration mechanism 10 Press dehydration mechanism
11 Peeling mechanism 12 Drying room
13 Heater 14,15 Transport mechanism
16 Heater 17 Controller
18,19 sensor

Therefore, in the present invention according to claim 1, a drying chamber that is installed inside a building and that dries dried laver dough with heated air while being transported along a transport path, and a heating chamber that supplies heated air to the drying chamber. Nori production system having a heating device and a heating device that heats and supplies air outside the building to the heating device, in a state where the nori dough exists only on the upstream side of the transport path inside the drying chamber ( In the initial operation state), the output of the heater is gradually increased, and then, in a state where the laver dough is present in all the transport paths inside the drying chamber (normal operation state), the output of the heater is increased. After that, in a state where the laver material is present only on the downstream side of the transport path inside the drying chamber (final operation state), the output of the heating machine is gradually lowered, and the heating in the normal operation state is performed. The maximum value of the output of the The temperature of the outside of the building changes when the outside temperature of the building decreases, or when the temperature inside or outside the building changes, according to the outside temperature of the building. when the temperature difference between is increased, if the humidity difference between the inside and outside of or buildings if the external humidity of the building is increased is increased, that to suppress the increase in width or not to increase the maximum value of the output of the heating device Decided to control.

In the present invention according to claim 2 , in the present invention according to claim 1 , the maximum value of the output of the heater in the normal operation state is changed according to the outside temperature of the building in the normal operation state. Then, control is performed such that the output of the heater is gradually decreased in the final operation state so as to have the changed maximum value.

Claims (3)

A drying room installed inside the building and drying the dried seaweed dough with heated air while transporting it along the transport path, a heating device that supplies heated air to the drying room, and air outside the building to the heating device Nori production system having a heating machine for heating and supplying
In a state where nori dough exists only on the upstream side of the transport path inside the drying chamber (initial operation state), gradually increase the output of the heating machine,
Thereafter, in a state where the laver dough is present in all of the transport paths inside the drying chamber (normal operation state), the output of the heating machine is maximized,
Thereafter, in a state where the laver material is present only on the downstream side of the transport path inside the drying chamber (final operation state), the output of the heating machine is controlled to gradually decrease, and the laver production is characterized in that system.   The maximum value of the output of the heater in the normal operation state is changed according to the temperature outside the building in the initial operation state, and the output of the heater in the initial operation state is changed to the changed maximum value. The seaweed production system according to claim 1, wherein the seaweed production system is controlled so as to gradually rise.   The maximum value of the output of the heater in the normal operation state is changed in accordance with the temperature outside the building in the normal operation state, and the output of the heater in the final operation state is changed to the changed maximum value. The nori production system according to claim 1 or 2, wherein the laver is controlled so as to be gradually lowered.

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