JP6661095B2 - Nori heating equipment - Google Patents

Description

  The present invention relates to a laver heating device that continuously heats laver conveyed by a conveyor.

  2. Description of the Related Art As a device for manufacturing plate laver by heating plate laver, a laver heating device for baking plate laver conveyed by a belt conveyor in a heating chamber is known (see Patent Documents 1 and 2).

  The laver heating device described in Patent Literature 1 includes a heating chamber, a belt conveyor, and a heater (see Patent Literature 1 and FIG. 1). A belt conveyor that conveys plate laver is arranged in the heating chamber, and a plurality of heaters are provided above the belt conveyor. With this heater, the atmospheric temperature in the heating chamber becomes about 200 ° C. to 250 ° C., and the plate temperature is conveyed by the belt conveyor at a high ambient temperature.

  In order to bake laver using this laver heating device, the temperature of the atmosphere in the heating chamber must be raised by a heater to a temperature at which the laver can be grilled. That is, it is necessary to wait for a certain period of time after operating the heater until the ambient temperature rises and the laver can be baked. Therefore, there is a problem that energy loss is large.

  The laver heating device described in Patent Literature 2 reduces the volume of the heating chamber by adding a heat insulating partition to the heating chamber (see Patent Literature 2 and FIG. 3). As a result, the amount of energy required to raise and maintain the ambient temperature is reduced, and an energy saving effect is obtained. However, even in this case, a high ambient temperature is required to heat the seaweed. Therefore, it is necessary to operate the heater until the desired ambient temperature is reached and then wait.

  Further, in the conventional laver heating device, the heater is used to raise the ambient temperature, so if the distance between the transported laver and the heater is short, the grilled laver shrinks or burns. There was also a problem.

JP 2017-108668 A JP 2014-187923 A

  In view of the above problems, an object of the present invention is to provide a laver heating device that can directly heat laver without having to wait for a rise in ambient temperature.

The present invention has been made to solve the above problems, and the invention according to claim 1 is a belt conveyor that conveys laver placed on a conveying surface, and a furnace that insulates around the conveying surface. a lamp heater for heating the seaweed on the transport surface directly, and an auxiliary heater to raise the temperature of the ambient temperature of the furnace, the belt conveyor is made of a resin or a metal having heat resistance which is formed in a mesh shape Endless belt, wherein the lamp heater is disposed adjacent to the thin tube-shaped carbonaceous heating element, a glass inner tube that houses the carbonaceous heating element therein, and the carbonaceous heating element. A reflecting plate for reflecting radiant heat generated by a heating element toward the transport surface; and an outer tube made of glass for housing the inner tube and the reflecting plate therein, wherein the lamp heater includes the belt conveyor. Between the outbound and return trips It is, the auxiliary heater is a laver heating apparatus characterized by being arranged to face the lamp heater sandwiching the conveying surface.

In the invention according to claim 2, the lamp heater and the auxiliary heater are provided in a plurality in a row along a transport direction of the belt conveyor, and a distance between the auxiliary heater and the transport surface is the same. The distance between the auxiliary heaters is longer than the distance between the lamp heater and the transport surface, and the distance between the adjacent auxiliary heaters is longer than the distance between the adjacent lamp heaters .

The invention according to claim 3 is characterized in that the auxiliary heater is a ceramic heater or a sheathed heater .

According to the invention described in claim 1, it is possible to directly heat the conveyed laver, energy can be concentrated on the conveyed laver to efficiently heat the laver, and further, the laver to be heated can be heated. It is possible to provide a space-saving laver heating device that can realize various heating conditions according to the characteristics of the above.

According to the second aspect of the present invention, it is possible to provide a laver heating device in which shrinkage and scorching of the laver to be heated are less likely to occur.

According to the third aspect of the present invention, it is possible to provide a laver heating device that can also be used for heating at ambient temperature .

1 is a schematic front view showing a laver heating device according to a first embodiment of the present invention. It is the schematic which shows the lamp heater of the laver heating apparatus which concerns on 1st embodiment of this invention, (a) is a schematic plan view, (b) is the schematic sectional drawing which shows the AA cross section of (a). It is. It is the schematic which shows the laver heating apparatus which concerns on 2nd embodiment of this invention, Comprising: (a) is a schematic fracture | rupture front view which shows a partly fractured | ruptured, and (b) is the figure which partially fracture | ruptures and shows. It is a fracture | rupture right side view.

  Next, an embodiment of a laver heating device according to the present invention will be described with reference to the drawings. The embodiment described below is a preferred embodiment of the present invention, and thus various technically preferable limitations are added. However, the scope of the present invention particularly limits the present invention in the following description. The embodiment is not limited to these embodiments unless otherwise stated.

[First embodiment]
A laver heating device according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic front view showing a laver heating device according to the first embodiment of the present invention. Drawing 2 is a schematic diagram showing a lamp heater of a laver heating device concerning a first embodiment of the present invention, (a) is a schematic plan view, (b) is an AA section of (a). FIG.

  First, the structure of the laver heating device according to the first embodiment of the present invention will be described with reference to FIG. The laver heating device 1 according to the present embodiment includes a belt conveyor 10 that transports the laver to be heated, and lamp heaters 20,..., 20 that heat the laver transported by the belt conveyor 10. The laver is placed on the transport surface 10a of the belt conveyor 10 and transported, and is heated by the lamp heater 20 while moving on the transport surface 10a from the left end to the right end in FIG.

  The belt conveyor 10 is configured such that an endless belt 13 is wound around pulleys 11 and 12. When one of the pulleys 11 and 12 is driven and the other is driven, the transport surface 10a, which is the upper surface of the endless belt 13, moves in the transport direction. The endless belt 13 is preferably made of a heat-resistant resin or metal formed in a mesh shape. By forming the mesh, the far-infrared radiation heat emitted from the lamp heater 20 penetrates, reaches the laver on the transport surface 10a, and is heated.

  A plurality of lamp heaters 20 are provided along the transport direction of the belt conveyor 10 and are arranged below the transport surface 10a, that is, between the outward and return paths of the endless belt 13. As described later, the lamp heater 20 emits infrared radiation heat and directly heats the laver on the transport surface 10a.

  Next, the configuration of the lamp heater 20 of the present embodiment will be described with reference to FIG. Drawing 2 is a schematic diagram showing a lamp heater of a laver heating device concerning a first embodiment of the present invention, (a) is a schematic plan view, (b) is an AA section of (a). FIG.

  The lamp heater 20 includes a carbonaceous heating element 21, a glass inner tube 22 that houses the carbonaceous heating element 21, a reflection plate 23 that reflects radiant heat generated by the carbonaceous heating element 21, an inner tube 22, It has a double tube structure including a glass outer tube 24 that houses the reflection plate 23. The lamp heater 20 is a kind of a so-called carbon heater.

  The carbonaceous heating element 21 is in the form of a long thin plate, and a meandering conduction path is formed in the middle portion by a plurality of slits 21a,. Have been. The carbonaceous heating element 21 is sealed in an inner tube 22 together with an inert gas such as an argon gas, and lead wires 25, 25 connected to both ends thereof are drawn out from the closed inner tube 22 to the outside. ing.

  A reflection plate 23 is arranged next to the inner tube 22. As shown in FIG. 2B, the reflection plate 23 is formed of a metal plate that is bent so as to cover the left and right sides of the inner tube 22.

  The outer tube 24 accommodates the inner tube 22 and the reflection plate 23, and the lead wires 25, 25 exiting from the inner tube 22 are drawn out of the outer tube 24. The outer tube 24 may be filled with an inert gas, or may be filled with air as it is.

  The lamp heater 20 can be energized to the carbonaceous heating element 21 through the lead wire 25, and the energization causes the carbonaceous heating element 21 to glow red and generate far-infrared radiation heat. Since the reflection plate 23 is arranged next to the inner tube 22, far-infrared radiation heat is concentrated by the reflection plate 23 in the upward direction in FIG. That is, if the laver is arranged in the upward direction in FIG. 2B with respect to the lamp heater 20, the laver is directly heated by the far-infrared radiation heat. Since an inert gas is sealed in the inner tube 22, oxidation of the carbonaceous heating element 21 is suppressed. Further, since the reflection plate 23 is protected in the outer tube 24, good heating efficiency by the reflection plate 23 is maintained.

  In the laver heating apparatus 1, the direction of the reflector 23 of all the lamp heaters 20 is adjusted such that the radiant heat of the carbonaceous heating element 21 faces the transport surface 10 a. Thereby, while the laver moves from the right end to the left end of the transport surface 10a, it is directly heated by far-infrared radiation heat. Further, the direction of the lamp heater 20 is adjusted so that the plate surface of the carbonaceous heating element 21 is parallel to the transfer surface 10a, whereby a large amount of far-infrared radiation radiated from a large area is transferred. Reach the upper laver and heat the laver directly. Therefore, the laver heating device 1 heats the laver with energy saving.

  Since a plurality of lamp heaters 20 are arranged along the transport direction, it is possible to change the heating intensity at each position on the transport surface 10a by adjusting the output of each lamp heater 20. .

[Second embodiment]
Next, a laver heating device according to a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a schematic view showing a laver heating apparatus according to a second embodiment of the present invention, in which (a) is a schematic cutaway front view showing a partly broken part, and (b) is a partly brokenaway view. It is a general | schematic fracture | rupture right side view shown in FIG.

  First, the structure of the laver heating device according to the second embodiment of the present invention will be described. The laver heating device 2 according to the present embodiment includes a belt conveyor 10 that transports the laver, lamp heaters 20,..., 20 that heat the laver transported by the belt conveyor 10, and an auxiliary heater 30 that controls the ambient temperature. ,..., 30 are provided. A furnace 40 that accommodates the lamp heater 20 and the auxiliary heater 30 and that insulates the periphery of the transport surface 10a is provided. Since the belt conveyor 10 and the lamp heater 20 are the same as in the first embodiment, the description will be omitted.

  The laver heating device 2 includes a plurality of auxiliary heaters 30 and is disposed to face the lamp heater 20 with the transport surface 10a interposed therebetween. The auxiliary heater 30 is used for increasing the temperature of the atmosphere in the furnace 40. Although any heater can be used as the auxiliary heater 30, a ceramic heater, a sheath heater, or the like is preferably used.

  The furnace 40 includes six heat-insulating wall surfaces 41, 42, 43, 44, 45, and 46. While the belt conveyor 10 is housed therein, both ends of the transfer surface 10a are respectively opened from openings 40a, 40b. It protrudes out of the furnace 40. Therefore, the laver placed on the left end of the transport surface 10a enters the furnace 40 through the opening 40a and is heated. After the heating is completed, the seaweed leaves the furnace 40 through the opening 40b.

  Here, the arrangement of the lamp heater 20 and the auxiliary heater 30 in the furnace 40 will be described. A plurality of the lamp heaters 20 and the auxiliary heaters 30 are arranged parallel to the transport surface 10a along the transport direction. While the distance between the lamp heater 20 and the transfer surface 10a is d1, the distance between the auxiliary heater 30 and the transfer surface 10a is d2, and d1 <d2. Further, while the lamp heaters 20 are arranged at intervals of s1 along the transport direction, the auxiliary heaters 30 are arranged at intervals of s2 along the transport direction, and s1 <s2.

  The lamp heater 20 directly heats the seaweed conveyed on the conveying surface 10a, while the auxiliary heater 30 raises the ambient temperature in the furnace 40. Since the heater 30 does not directly heat the laver from a short distance, the risk of shrinking or burning of the laver is reduced.

  Since a plurality of auxiliary heaters 30 are arranged along the transport direction, the ambient temperature distribution in the furnace 40 can be changed by adjusting the output of each of the auxiliary heaters 30, whereby the transport surface 10 a It becomes possible to change the intensity of heating for each upper position. Further, by combining the output adjustments of the respective lamp heaters 20, various heating methods and heating intensities can be set.

1, 2 Nori heating device 10 Belt conveyor 10a Conveying surface 11 Pulley 12 Pulley 13 Endless belt 20 Lamp heater 21 Carbonaceous heating element 21a Slit 22 Inner tube 23 Reflector 24 Outer tube 25 Lead wire 30 Auxiliary heater 40 Furnace 40a Opening 40b Opening 41, 42, 43, 44, 45, 46 wall surface

Claims (3)

A belt conveyor for transporting the laver placed on the transport surface,
A furnace that insulates the periphery of the transfer surface,
A lamp heater for directly heating the laver on the transport surface ,
An auxiliary heater for raising the ambient temperature in the furnace ,
The belt conveyor has a heat-resistant resin or metal endless belt formed in a mesh shape,
The lamp heater is:
A sheet-like carbonaceous heating element,
A glass inner tube containing the carbonaceous heating element therein ,
A reflector disposed next to the inner tube and reflecting radiant heat generated by the carbonaceous heating element toward the transfer surface,
Having a glass outer tube that houses the inner tube and the reflector inside,
The lamp heater is disposed between a forward path and a return path of the belt conveyor,
The seaweed heating device , wherein the auxiliary heater is disposed so as to face the lamp heater with the conveyance surface interposed therebetween . A plurality of the lamp heaters and the auxiliary heaters are respectively provided in a line along a conveying direction of the belt conveyor;
The distance between the auxiliary heater and the transfer surface is longer than the distance between the lamp heater and the transfer surface,
The seaweed heating device according to claim 1 , wherein a distance between the adjacent auxiliary heaters is longer than a distance between the adjacent lamp heaters . 3. The laver heating apparatus according to claim 1 , wherein the auxiliary heater is a ceramic heater or a sheath heater .

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