JP6684110B2 - Food processing equipment - Google Patents

Description

  The present invention relates to a heat treatment device that heats foodstuffs under reducing conditions.

Superheated steam refers to steam that has been heated to 100 ° C. or higher under normal pressure, and methods for heat-treating food materials are described in Patent Documents 1 to 4, for example.
However, in each case, the water becomes condensed when the superheated steam is sprayed on the food material, and the characteristics of the superheated steam are not fully utilized.

It is said that foodstuffs have water that is simply contained as free water and bound water that is bound to sugars and proteins in the foodstuffs.
It is also said that when food is heated, it also contains dissolved water that is liberated.
In addition, it is said that if the food is simply heated in the air, it will be oxidized, which will cause deterioration of the taste.
Especially when the food material is granular like grains, the conventional batch processing is inferior in productivity.

Japanese Patent No. 4746706 JP, 2008-154576, A JP, 2001-120199, A JP, 2006-87641, A

  It is an object of the present invention to provide a continuous heat treatment apparatus which can easily set a heating condition suitable for each food material and has excellent productivity.

  The food heat treatment apparatus according to the present invention includes an outer chamber section partitioned by a partition into a plurality of zones, and an inner tube section having a rotation-controlled breathability arranged so as to cross the outer chamber section. Each zone is provided with a superheated steam supply means, a heater and a water sprinkling means.

  In this way, by partitioning the outer chamber into a plurality of zones and providing a superheated steam supply means, a heating heater, and a sprinkling means for each zone, the heating conditions of each zone can be independently controlled, for example, by program control. .

If the superheated steam is simply blown toward the food, it is cooled by the food and becomes condensed water, and the food contains a large amount of water. In addition, a large amount of ambient air remains, and the food is oxidized.
Therefore, in the present invention, a heater is provided in each zone.
As a result, the water whose temperature has been lowered is reheated and the zone is filled with superheated steam, so that the air is expelled, and the reducing condition can be maintained.
In addition, moisture is not condensed on a part of the food, and the food is heated uniformly.
In the present invention, since water sprinkling means is also provided in each zone, it can be used for adding water to foodstuffs, or can be cooled while maintaining a reduced steam state by maintaining a saturated steam state inside the zone when cooling foodstuffs from a high temperature. .

For example, when the food material is grains such as rice, it is said that it is better to sprinkle water at an early stage, preheat with water and pregelatinize.
After that, continuous treatment such as high-temperature heat treatment under reduction and further drying / cooling under reduction is possible.

In the present invention, it is preferable that a plurality of drums are inserted and connected to the inner cylinder portion, the connection portion has a flange portion having a circular outer shape, and the flange portion is rotatably supported by a rotating roller.
With this, the insertion portion can absorb thermal deformation such as thermal expansion and cooling contraction.
Also, maintenance can be done easily because it can be disassembled and assembled at the insertion part.

In the present invention, one end portion of the inner tubular portion is a raw material ingredient input portion and the other is a unloading portion after heat treatment, and the input portion is located at a position slightly higher than the unloading portion, and It is also possible to dispose a conveying screw in the.
By doing so, heat treatment of granular grains and the like can be continuously performed, and the productivity is excellent.
The inner cylinder may be substantially horizontal by providing the conveying screw inside the inner cylinder.

In the present invention, a drying / cooling device for drying and cooling the heat-treated food material under reducing conditions may be provided.
For example, as a dry cooling device, a three-axis parallel stirring screw structure in which a pair of left and right stirring screws and a small stirring screw having an outer shape smaller than that of the stirring screws are provided on the lower central side thereof can be adopted.
Also in this case, it is preferable to carry out stirring and drying under a reducing condition in which air does not flow from the outside, and if necessary, heating means may be provided to perform heating and drying.

  The heat treatment apparatus according to the present invention is capable of setting and changing heating conditions for each zone when continuously injecting foodstuffs into the inner cylinder portion, and can perform continuous treatment suitable for foodstuffs.

The structural example of the foodstuff heat processing apparatus and drying / cooling apparatus concerning this invention is shown. An example of an internal structure of a dry cooling device is shown. The connection structure example of a drum is shown. (A) shows an example of supporting the flange portion by a rotating roller, and (b) shows a side view thereof. The example of setting of the processing zone of a heat processing apparatus is shown. The example of the heat processing pattern of foodstuff is shown.

FIG. 1 shows a structural example of a food heat treatment apparatus and a dry cooling apparatus according to the present invention, and FIG. 2 shows a structural example of a dry cooling apparatus.
The heat treatment apparatus 10 is provided with an outer chamber portion 12 divided into a plurality of treatment zones by a plurality of partitions 12a, and an inner cylinder portion 13 so as to cross the plurality of partitions 12a provided in the outer chamber portion 12. There is.
The inner cylinder portion 13 is supported by a plurality of rotating rollers 18, and in this state, the drive motor 16 and the sprocket 17 connected and fixed to the end portion of the inner cylinder portion are transmission-coupled by a chain 16a.
As a result, the rotation of the inner cylinder portion 13 is controlled.
A caster is attached to the gantry 11 so that it can be moved.

The inner cylinder portion 13 is made of a SUS mesh material or the like so as to be ventilated.
A spiral conveying screw 13d is provided inside.
As shown in FIG. 3 (a), the inner cylinder portion 13 has a divided structure in which a plurality of drums 13a are inserted and connected via insertion portions 13c.
A flange portion 13b having a circular outer shape is formed on both ends of the drum 13a, and the outer peripheral portion of the flange portion 13b is rotatably held by three rotating rollers 18 as shown in FIGS. 4 (a) and 4 (b). ing.
The rotating roller 18 has a groove structure having a groove portion 18a at the center, the flange portion 13b is placed in the groove portion 18a, and the rotating roller 18 is pivotally attached to the support bracket 18b via a shaft portion 18c. .
As a result, dimensional changes due to thermal expansion and cooling shrinkage can be absorbed and split at the insertion portion, and maintenance is easy.
In each zone partitioned by the partition 12a of the outer chamber section 12, as shown in FIG. 5, an overheated steam generator 15 (15a to 15g), a heater 14 (14a to 14g), and a water sprinkling means (water sprinkling valve control) 19 are provided. (V _{1 to} V ₆ ) are provided respectively.
Further, the gas in the outer chamber is exhausted from the exhaust ports 12b and 12c.

When food materials such as rice are charged by a supply screw or the like, they are charged into the inner cylinder portion 13 from the charging hopper 12d.
As shown in FIG. 1, the outer chamber section 12 is divided into a plurality of zones by the partition 12a, and therefore, the processing conditions of each foodstuff that crosses each zone are program-controlled by a computer.
For example, referring to FIG. 5, in the initial S ₁ step, residual heat can be added under the reducing condition by superheated steam while adding water by sprinkling water.
In the next S ₂ step, high temperature heat treatment is performed under reducing conditions.
Then S ₃ reduction in stroke conditions, drying processes, can be in the state of saturated steam at S _4-stroke, cooled under reducing.
These temperature change patterns are shown in FIG. 6 as an example.
The graph of FIG. 6 shows changes in the overall heating conditions in which the food material passes through each zone.
The temperature of the superheated steam is controlled in the range of 300 ° C. to 550 ° C., and the heater plays a role of supporting the superheated steam to be maintained at a predetermined temperature.
Depending on the food, it can also be used to heat the food, and a pair of heating heaters is placed in each zone.

The heat-treated food material is put into the drying and cooling device 20 via the carry-out hopper 12e.
As shown in FIG. 2, the dry cooling device 20 has a three-screw structure example of a pair of left and right stirring screws 22 and 23, and a small stirring screw 24 provided at the lower side of the central portion thereof for stirring and discharging.
The rotation of each screw is controlled by drive motors 22a and 24a.
The upper part includes a top plate 21a and an intermediate member 21b having a plurality of ventilation holes 121b.
In addition, cooling air by a cooling fan 25a is sent to the lower side of the bottom plate portion 26 that serves as the lower partition plate.
When the food is charged from the charging port 21c, the charging port 21c is sealed by the food, water vapor in the food passes between the top plate 21a and the central member 12b, and is discharged to the outside by the exhaust fan 25b. To be done.
As a result, air is prevented from flowing inside, and drying and cooling are performed under reducing conditions.
A heater 26 may be provided to control the drying temperature.
The food material carried out from the carry-out section 24b can be further made into powder by the crusher 30 or the like.

There is no limitation on the food material to be heat-treated in the present invention.
Among them, it is suitable for granular grains such as rice, wheat and beans.

10 Heat Treatment Device 11 Frame 12 Outer Chamber 12a Partition 13 Inner Tube 13a Drum 13b Flange 14 Heater 15 Overheated Steam Generator 16 Drive Motor 17 Sprocket 18 Rotating Roller 19 Water Sprinkler 20 Drying Cooler 30 Crusher

Claims (2)

An outer chamber part partitioned into multiple zones by partition walls,
The inner cylinder portion is disposed so as to cross the outer chamber portion, and has rotation-controlled air permeability,
Wherein each zone, possess a water spray means and supply means of the superheated steam and a heater,
Before Symbol inner cylinder portion is connected plug multiple drum,
The connecting portion has a circular flange portion,
Heat treatment apparatus of the food material, characterized in that are rotating supporting the flange portion by the rotation roller. One of the end portions of the inner cylinder portion is a raw material ingredient input portion and the other is a unloading portion after heat treatment, and the input portion is located at a position slightly higher than the unloading portion, and a conveying screw is placed inside. heat treatment apparatus according to claim 1 Symbol placement ingredients, characterized in that are arranged to.

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