JP2018068843A - Drum-type continuous heat treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drum-like continuous heat treatment device which allows a continuous heat treatment while suppressing oxidization of food material, and new use of the food material, and also allows a heat treatment of powdered material.SOLUTION: The present invention includes a tunnel-like outer chamber 11 and an inner cylindrical drum 12 provided along the inside of the outer chamber with rotation of the inner cylinder drum being restricted. The inner cylinder drum has an inlet part 14 of a material to be processed on one side and an outlet part 15 on the other side, and can heat powdered material to be treated. A plurality of heaters H1-H10 are provided between the outer chamber and the inner cylinder drum and along the path from the inlet part of the material to be processed to the outlet part, and an overheat steam supply part extends along the inside of the inner cylinder drum.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rotary drum type continuous heat treatment apparatus, and is particularly suitable for continuously heat-treating food materials under reduction.

Methods for using steam heated to 100 ° C. or higher at normal pressure to heat the food are known, and disclosed in, for example, Patent Documents 1 to 4, respectively.
However, all of them are close to injecting superheated steam toward the ingredients, and the superheated steam is cooled by the ingredients and the surface is in a state where water adheres to it, leading to a reduction in the taste of the ingredients. It was.

Japanese Patent No. 4746706 JP 2008-154576 A JP 2001-120199 A JP 200687641 A

An object of this invention is to provide the drum-type continuous heat processing apparatus which can heat-process continuously, suppressing the oxidation of a foodstuff, and can obtain the utility value as a new foodstuff.
Moreover, the heat processing of the powdery to-be-processed material is also possible.

  A continuous heat treatment apparatus according to the present invention includes a tunnel-type outer chamber portion, and an inner drum that is disposed along the outer chamber portion and is rotationally controlled. Of the input chamber and the discharge portion on the other side, and the powdered material to be processed can also be heat-treated, between the inner side of the outer chamber portion and the inner cylindrical drum, It has a plurality of heaters along the carry-out part from the charging part, and has a superheated steam supply part extending along the inner side of the inner drum.

Here, the inner cylinder drum refers to an inner cylinder having an input portion such as a food material at one of both end portions and an unloading portion from which the heat-treated material is unloaded.
Here, the heat treatment of the powdery material to be treated means that there is no hole or the like for the powder to fall on the outer peripheral wall of the inner drum.
The inner cylinder drum may be one inner cylinder or a plurality of inner cylinders connected to each other.
Since the inner cylinder drum has a high temperature of 500 to 650 ° C., it is possible to absorb the expansion and contraction by connecting the plurality of inner cylinders so as to be slidably fitted.

In the present invention, the tunnel-type outer chamber portion is for separating the periphery of the inner cylindrical drum disposed on the inner side from the surrounding outside world, and between the inner side of the outer chamber portion and the inner cylindrical drum, The reason why the heaters are divided into a plurality of parts from the input part of the material to be processed of the drum along the carry-out part is that the material to be processed passing through the inner side of the inner drum is divided into a plurality of zones to manage the heat treatment. This is to enable continuous heat treatment.
Therefore, the heater is preferably divided into a plurality of zones and controlled for each zone.

In the present invention, the superheated steam supply unit supplies the superheated steam to the inside of the inner cylinder drum so that the inside becomes a reducing atmosphere.
Therefore, it is preferable that the superheated steam supply section has a superheated steam spray pipe and a cover section formed above.

  This is because the cover part is guided in the falling direction because the powdery material to be treated may be swollen by spraying of superheated steam.

Moreover, it is preferable to optimize the amount of superheated steam sprayed according to each stage between the initial stage when it is carried out from the initial stage when it is put into the inner drum, and the thermal treatment conditions differ depending on the foods to be heat-treated.
Therefore, in the present invention, it is preferable that a length of the inner drum is different between the superheated steam spray pipe and the cover portion in the depth direction, and the nozzle pipe is independently controlled.
Here, the nozzle tube having a different length along the depth direction means that the position of the tip portion of the nozzle tube inside the inner drum is different along the longitudinal direction of the inner drum.

Another feature is that the superheated steam generator for supplying superheated steam to the superheated steam supply unit in the present invention can be made compact.
Therefore, the superheated steam generator for supplying superheated steam to the superheated steam supply unit used in the present invention has a water reservoir and a steam superheat space standing from the reservoir, and the water reservoir is steam. The steam overheating space has a superheater for overheating the steam.
Conventional superheated steam generally boiled water with a boiler and heated the generated water vapor to 100 ° C. or higher with another coil heater or the like.
On the other hand, the superheated steam generator according to the present invention has a boilerless structure in which the water reservoir and the superheated space of steam are integrated, so that the structure can be simplified and the size can be reduced.
In addition, it is preferable that the water supply to the water storage section can be automatically supplied only by the difference in water level by the piping communication with another water storage tank without using a pump.

The drum-type continuous heat treatment apparatus according to the present invention can manage the heating conditions by dividing the inner drum through which the food or the like passes into a plurality of zones, and therefore can cope with the heat treatment of various foods and the like.
Moreover, since the inner cylinder drum does not have a hole or the like in the outer peripheral wall, powder or the like can be heat-treated.

  It was revealed that the following effects can be obtained by heat-treating various foods in a reducing atmosphere with superheated steam.

When rice (granular) such as brown rice and white rice is heated under moderate superheated steam while adding moderate humidification, the surface of the rice grain is alpha, and 10-40% of the rice grain is alpha alpha.
In this way, when partly pre-gelatinized rice is made into fine powder and made into powder, when water is added and kneaded, the viscosity increases and an emulsifying action is exhibited.
Moreover, it can alphalyize by heat-processing the rice powder which refined | miniaturized rice grain.
In the present invention, since it is alpha in a reducing atmosphere under superheated steam, oxidation is suppressed and storage stability is improved.
The partially pregelatinized rice powder has an emulsifying effect, so it can reduce gluten when it is mixed with flour to make bread.
Conventional ordinary wheat flour bread is made by adding water to kneaded flour, sugar, salt, dry yeast, etc. and kneading it so that glutenin and gliadin present in the endosperm of wheat react with water to become gluten, which increases. It becomes a sticky agent and fermentation proceeds.
However, wheat gluten is an allergenic substance and there is a strong need for gluten-free bread.
In conventional rice bread, alternative gluten is added to rice flour, and it is not gluten-free.
In contrast, when partially pre-gelatinized rice powder is used, it has a viscosity sufficient to produce bread only by adding about 2% of this rice powder to wheat flour.
Furthermore, when the addition ratio of rice powder is increased to 2 to 20%, the feeling of stickiness increases.
Moreover, bread can also be manufactured with rice powder and sugar, salt, yeast, etc., without using wheat flour, and a gluten-free bread is obtained.
Here, fats such as butter are added as necessary.
For the production of bread, after a fermentation process such as primary fermentation or secondary fermentation, a baking process of baking at about 200 ° C. is required. When this baking process is also performed in a reducing atmosphere with superheated steam, oxidation occurs. A rice flour bread that is suppressed and has excellent storage stability is obtained.

When barley is finely pulverized as it is, it is heated in this reducing atmosphere and mixed with the rice powder to increase sweetness.
For example, 2 to 5% is added to rice flour.
In addition, when a material to be treated having a high water content such as okara is heat-treated with the apparatus according to the present invention, a sterilized dry okara with no odor is obtained.

The drum-type continuous heat treatment apparatus according to the present invention can heat various cereals. For example, when beans such as soybeans, red beans, and kidney beans are heat-treated, they are baked like roasted beans.
When these ingredients are made into fine powder, the raw odor is eliminated and the range of use as new ingredients is expanded.
Even if it is the powder which pulverized these beans, it can heat-process continuously.

The structural example of the drum type continuous heat processing apparatus which concerns on this invention is shown. The enlarged view near the input part of a to-be-processed material is shown. The enlarged view near the carrying-out part of a to-be-processed material is shown. (A) schematically shows a cross-sectional view of the apparatus in the vicinity of the superheated steam charging portion, and (b) shows an enlarged view of the vicinity in which the inner cylindrical portion is supported by rollers. The external view of a superheated steam spray tube and a cover part is shown. The structural example of a superheated steam generator is shown.

A structural example of a drum-type continuous heat treatment apparatus according to the present invention will be described below with reference to the drawings.
FIG. 1 schematically shows the structure of the entire apparatus, FIG. 2 shows an input portion for a material to be processed, and FIG. 3 shows an unloading portion for the material to be processed.
FIG. 4A is a cross-sectional view of the device near the charging portion of the inner cylinder drum, and FIG.

The drum-type continuous heat treatment apparatus 10 includes a tunnel-type outer chamber portion 11 having an inlet and an outlet, and an inner cylinder drum 12 formed of a rotating inner cylinder disposed along the tunnel.
As shown in FIG. 4, the inner drum 12 is rotatably supported by rollers 12b and 12c, and as shown in FIGS. 1 and 3, the inner drum 12 is connected to a driving portion 13 such as a motor via a coupling portion 13a such as a coupling. Are connected and controlled in rotation.
One of the inner cylinder drums 12 is a processing material input section 14 and the other is a processing material carry-out section 15.
If the inner cylinder part 12 is rotationally controlled, the structure itself is not limited.
In addition, the inner cylinder drum has no holes in the outer peripheral wall so that the heat treatment of the powdery material can be performed.

In the present embodiment, as shown in an enlarged view in FIG. 3, in order to suppress an eccentric load from being applied to the inner drum 12, a drive motor shaft is connected coaxially with the inner drum 12, and an unloading portion for the material to be processed is used. 15 is secured by a plurality of round bars 15b between the flange 15a attached to the end of the cylindrical body of the inner drum 12 and the flange 15a fixed to the motor shaft.
Thereby, a to-be-processed material falls from between the some round bars 15b, and it can receive with the collection | recovery hopper 18 of a to-be-processed material.
As shown in FIG. 4B, the pressing roller 12e is attached downward by a spring 12f via a link 12d so as to easily absorb the radial displacement caused by heating the inner drum 12. It is energized.

In the inner drum 12, a material to be processed such as a food material is input from the input unit 14, and the target material is moved toward the carry-out unit 15 by the rotation of the inner drum 12.
It is preferable that the inner drum 12 is slightly inclined so that the input portion 14 of the inner drum 12 is slightly higher than the carry-out portion 15. In this embodiment, the inner circumference of the inner drum 12 is easily controlled so that the transfer amount can be easily controlled. In this example, a spiral screw 12a is attached along the surface.
2 and 3 are shown in a state where the outer peripheral wall of the inner drum is seen through.

There is no restriction on the method of loading the material to be treated into the loading portion 14 of the inner drum 12.
In this embodiment, as shown in FIG. 2, a hopper 16 and a closing screw 16b are provided at the bottom thereof, and the charging screw 16b is rotationally driven by a motor 16a.

An example of the structure of the superheated steam generator HE that supplies superheated steam to the superheated steam supply unit 20 is shown in FIG.
Applicants called the superheated steam generator a hydro engine and used the abbreviation HE.
The HE is composed of a substantially L-shaped case body 51, and has a water storage part 51b for storing water W on the lower side, and a steam superheated space part 51a standing upward from the water storage part 51b.
A heater 52 is disposed in the water storage section 51b to connect the external cable and the terminals 52a and 52b.
A superheater 53 is disposed in the steam superheat space 51a to connect the external cable and the terminals 53a and 53b.
Water is heated by the heater 52 of the water reservoir 51b, and water vapor is generated.
The generated water vapor is superheated to superheated steam at 300 to 550 ° C. by the superheater 53 in the superheated space 51a.
The supply of water W to the superheated steam generator HE is connected to the water supply port 54 of the water storage section 51b in a state where the water W communicates with the water storage tank 30 provided outside.
Therefore, when the water level of the water storage section 51b is lowered, water is replenished only by the water level difference from the water storage tank 30.
This water level can be confirmed with a water level gauge 40.
Further, the water storage tank 30 is provided with an overflow portion 31 so that the water level is constant, and is connected to a water pipe or the like to adjust the valve.
In addition, if the superheated steam generator which concerns on this invention has a water storage part and the water vapor | steam superheated space part provided above it, it will not be limited to an L-shaped structure.

As shown in FIG. 4A, the heater H is disposed inside the outer chamber 11 and above and below the inner drum 12.
The heater H is in a cantilever state in which a plurality of rod-like sheathed heaters a are built in the panel body and the base side end is fixed to the side wall c of the outer chamber 11.
The terminals b ₁ and b ₂ are connected to the external cable and thermally expand when an electric current is passed. However, since they are fixed in a cantilever state, they absorb thermal displacement.

As shown in FIG. 1, the drum-type continuous heat treatment apparatus 10 according to the present invention includes a heater H having the structure described above on the inner side of the outer chamber 11 and on the outer side of the inner drum 12 and above and below the H _1. divided into 10 sets of to H ₁₀ it has to the examples provided.
For example, the heater (H ₁ , H ₂ ) is set to zone 1, Z ₁ , (H ₃ , H ₄ ) is set to zone 2, Z ₂ , (H ₅ , H ₆ ) is set to zone 3, Z ₃ , (H ₇ , H ₈ ) is zone 4, Z ₄ , and (H ₉ , H ₁₀ ) is zone 5, Z ₅ , and output control is performed in five zones, so that the material to be processed is transferred from the input unit 14 to the unloading unit 15. When heating toward the outside from the inner drum 12, the temperature distribution inside the inner drum 12 can be controlled.
In this way, by performing temperature management in a plurality of zones, it is possible to manage conditions according to various foods.

As shown in FIGS. 1 and 4, the superheated steam supply unit 20 has a discharge port 51 c of the superheated steam generator HE having the above-described structure for reducing the inside of the inner drum 12 with the superheated steam. Connected to the superheated steam spray tube 21.
FIG. 5 shows an external view in which only the superheated steam supply unit 20 is taken out.
The superheated steam spray pipe 21 has a plurality of spray holes 21 a corresponding to the zones 1 to 5.
As a result, the inside of the inner cylindrical drum 12 is reduced by superheated steam and touches the material to be treated. The steam whose temperature has been lowered is heated by the heater H to, for example, 500 to 650 ° C. Because it is reheated.
In the present invention, the spray of superheated steam can be varied by dividing into zones.
As the method, the cover part 22 was attached so that the predetermined insertion space part 23 might be formed above the superheated steam spray pipe | tube 21, as an enlarged view is shown in FIG.4 (c).
The cover portion 22 was attached to the superheated steam spray tube 21 with a support member 22a so as to have a gap portion 23a at every predetermined interval.
As shown in FIG. 5, nozzle tubes 24a to 24c having different lengths are respectively inserted into the insertion space portion 23. In this embodiment, three nozzle tubes having different lengths (insertion depth lengths) are inserted. Although it is an example of arrangement, the number is not limited.
The three nozzle tubes 24a to 24c are connected to the discharge ports 51c of the respective superheated steam generators HE.
Thereby, a difference can be provided in the amount of superheated steam discharged to each zone.
The cover portion 22 has a mountain shape, and the powder that has risen by the air flow generated by spraying superheated steam falls along the cover portion and returns to the lower side.

Thereby, as shown in FIG. 1, heating management can be performed for each of the zones Z _{1 to} Z ₅ , and the discharge amount of superheated steam can be managed in accordance with the position and state of the material to be processed passing through the inner drum 12.
The processing conditions for each zone are set on the operation panel 17.
The main purpose of the discharge amount of the superheated steam is to bring the inner cylinder drum 12 into a reduced state. Almost no exhaust gas is generated, but exhaust cylinders 19a and 19b are provided.

With this drum-type continuous heat treatment apparatus 10, granular rice grains such as white rice and brown rice, beans such as soybeans and red beans, or other various foods can be heat-treated.
In addition, food ingredients of various powders such as rice powder obtained by finely pulverizing rice and bean powder obtained by finely pulverizing soybean and the like can be continuously heat-treated.
For example, when “okara” was heat-treated, sterilized and dried powdered “okara” was obtained.
When the soybean bean powder was heat-treated, the raw odor disappeared and the storage stability was improved.
When the rice powder was heat-treated, it became partly pre-gelatinized rice, and the rice flour bread using this was improved in preservability.

DESCRIPTION OF SYMBOLS 10 Drum-type continuous heat processing apparatus 11 Outer chamber part 12 Inner cylinder drum 12a Spiral screw 13 Drive part 13a Connection part 14 Input part 15 Transfer part 20 Superheated steam supply part 21 Superheated steam spray pipe 22 Cover part 24a Nozzle pipe 24b Nozzle pipe 24c Nozzle tube

Claims (5)

A tunnel-type outer chamber, and an inner drum that is disposed along the outer chamber and is rotationally controlled,
The inner drum has one input portion of the material to be processed and a discharge portion on the other side, and the powdered material can also be heat-treated,
Between the inner side of the outer chamber part and the inner cylindrical drum, and having a plurality of heaters along the carry-out part from the input part of the material to be processed, and extends along the inner side of the inner cylindrical drum A drum-type continuous heat treatment apparatus having a superheated steam supply unit.   2. The drum-type continuous heat treatment apparatus according to claim 1, wherein the heater is divided into a plurality of zones and each zone is controlled.   The drum-type continuous heat treatment apparatus according to claim 1 or 2, wherein the superheated steam supply unit includes a superheated steam spray pipe and a cover portion formed above.   4. The drum type according to claim 3, wherein a length of the inner drum is different between the superheated steam spray pipe and the cover portion along a depth direction of the inner drum, and the nozzle pipe is independently controlled. Continuous heat treatment equipment.   The superheated steam generator for supplying superheated steam to the superheated steam supply unit has a water storage part and a steam superheated space part standing from the water storage part, and the water storage part is for generating steam. The drum-type continuous heat treatment apparatus according to any one of claims 1 to 4, further comprising a heater, wherein the steam superheated space includes a superheater for superheating steam.

Images