JP6231938B2 - Continuous roasting machine - Google Patents

Description

  The present invention relates to a structure of a novel continuous roasting machine that is particularly suitable as a mass production type apparatus for snacking food without using oil.

  The method of snacking vegetables is, for example, potato. (1) A method of slicing vegetables, chopping them and frying them with oil. ) Paste potato, kneaded, roasted, and sprayed with oil are typical techniques currently practiced.

However, in the above-described method, oil is used, so a high-fat, high-calorie snack is obtained, and obesity and metabolic syndrome are easily caused.
Therefore, the present inventor searched for a method for snacking vegetables with a good flavor and taste without using oil, and conducted an experimental trial using a conventional drying apparatus, heating apparatus, roasting apparatus, and the like.
As a result, with regard to flavor and texture, it was found that the roasting processing method is excellent, and the selection of the heat medium and heat transfer conditions used for roasting are extremely important factors for flavor and texture. did.

  The roasting device itself has a variety of forms and structures depending on the difference in heating methods (those that use microwaves, those that are exposed to hot air, those that spray steam, etc.), whether they are continuous or batch type, and other differences. Things are proposed and exist.

The inventors paid attention to a continuous sand frying machine. This is mainly when roasting tea leaves and wheat and processing them into roasted tea and barley tea. As a rare example (although only a batch-type sand roaster actually exists), when roasting peanuts, It is used. It is not heated by irradiating with hot air or microwave, but a large amount of particles with heat are put in, and this is covered with tea leaves and wheat that are to be roasted, or in direct contact with peanuts, It is a device that heats. The granule used at this time is called a heat medium, and sand (ceramic particles) is used as the heat medium in the case of the above-described tea stirrer for tea processing.

JP2009-112223A

The reason why the present inventor paid attention to the sand roaster is that the processed material (vegetable) can be roasted and expanded most.
By roasting, it is possible to obtain a fragrant flavor, that is, a snack feeling. By swelling, it is possible to obtain a crisp feeling, that is, a snack feeling when eating it.
Expansion is a phenomenon in which moisture contained in a raw material is evaporated by heat and the raw material is expanded outward. As a result, the inside of the raw material becomes porous.
The inventor initially roasted vegetables with a drum roasting machine, which is a general roasting machine. Vegetables that had been reduced in water content in advance were used. This is because the purpose is not to fry but to swell and to achieve long-term storage at room temperature as a snack. However, in the drum roasting machine, in order to obtain a flavor as a snack, the roasting time took 6 to 14 minutes depending on the vegetables, and the swelling was poor. Even if the temperature of the roasting drum is set to a high temperature of 200 ° C. or higher and the same vegetable is roasted in a short time and expected to expand, a satisfactory crispness cannot be obtained. However, it was far from the flavor as a snack.
The far-infrared roasting machine is a mechanism in which a burner heats a stainless steel plate directly below it and roasts the material to be roasted with the radiant heat. This is a machine that is also used for roasting roasted tea, and even a tea stem can be expanded. However, when this was used to roast vegetables, the surface hardness increased, but the core of the vegetables became burnt. In addition, Satsuma mochi and the like tend to be tight and are far from crisp.
Then, when I tried to expand by heating from the core of the vegetables in a microwave oven, it did not expand, and it was apt to cause roasting unevenness.
The coffee roaster is a roasting machine with strong heating power that sends hot hot air into the drum and burns the green beans to the core. When I tried this machine for vegetable roasting, I could burn it in a few seconds, and it did not adjust at all. Also, since vegetables are lighter than beans, they are still sucked out by forced exhaust of hot air, and the possibility of production is low.
Therefore, the present inventor has shown that the thermal conductivity of water is 23 times that of air and the specific heat is 3600 times that of air of the same volume. Because of its high conductivity, we thought that heated solid sand would be wrapped around the material to be roasted like a liquid, and if the roasted sand was covered, vegetables could be roasted and expanded like a snack.
As a result of prototyping with roasting sand, the roasting time can be adjusted from tens of seconds to several tens of seconds depending on the vegetables to obtain the desired roasting degree, and it is more food than any of the above roasting machines The feeling of crispness was high.

However, sand (ceramic granules) used in a sand frying machine should not be put into the mouth, not food, even if it is not toxic. Therefore, using sand in the field of food production is a measure that should be avoided. However, it has not been regarded as a problem in the past.
The reason for this is because the extract is put into the mouth, whether it is “hojicha” or “barley tea”, and “sand” never enters the mouth. It is not the effect brought about by the structure, but because it was endowed with the material that was put into the sand fryer or the product that was produced with the sand fryer.
That is, for example, even in the case of the above-mentioned peanuts, it is fried with the shell attached, or the shell is removed and the skin is attached. Hard to do. Therefore, in the case of a shell or skin attached, the sand is not eaten because it is peeled and eaten, and even if it is fried in a peeled state, the sand can be easily removed. In the case of wheat and tea leaves, the extract is consumed, so even if sand grains remain in the tea leaves, they are discarded together with the tea husks, so that they do not enter the mouth.
However, in the case of the snacked vegetables that the inventor seeks, they are eaten as they are, although they are forced to remain. Therefore, “sand” cannot be adopted as a heat medium like a conventional sand fryer.

The inventor considered that this can be achieved by using “edible grains” instead of “sand grains”. “Edible granules” are those that can be taken orally (ie, are not toxic and have little or no loss of texture) and maintain the structure of the granules during device operation (ie, not deliquescent, roasted, It does not melt even when roasted. Typical example is sodium chloride (sodium chloride). Besides this, potassium chloride, magnesium chloride, calcium chloride, ferric chloride, zinc sulfate, calcium carbonate, magnesium hydroxide, magnesium carbonate, biotin, sodium glutamate, calcium glutamate, A single substance or a mixture of tripotassium phosphate, tricalcium phosphate, potassium sulfate, calcium sulfate, magnesium sulfate, riboflavin, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, and the like can be used. These are eventually approved as food additives and, of course, can be taken orally.
Even if these remain in the product and enter the mouth, the taste changes slightly and does not constitute a food safety problem. For example, in the case of salt, the salty taste can be dissolved by saliva, so that the texture is not greatly impaired.

  However, it has been found that if edible granules are used, a good quality processed food cannot be obtained without problems.

  That is, when it is assumed that edible granules are used as a heating medium for roasting, consumers should use the edible granules that have been used when roasting is completed. It was found that the need for efficient removal was significantly higher in the case of “edible granules” than in the case of “sand” that did not have any.

Here, the structure of a mass production type stirrer that is currently on the market and in operation will be described. First, a double roasting cylinder is usually used in the roasting machine, and this double roasting cylinder is also used in the roasting cylinder of the present invention.
The double roasting cylinder has a circular truncated cone shape (one whose circumference is large at both ends) having a horizontal axis as a rotation axis and overlapping the rotation axis, and an outer side of the inner cylinder. The outer cylinder having a truncated cone shape is arranged, and the inclination direction of the inner cylinder peripheral surface is opposite to the inclination direction of the outer cylinder peripheral surface.

With the heat medium (sand) placed inside the inner cylinder, the outer cylinder is heated (by a burner or the like) while rotating the roasting cylinder to heat the heat medium. After that, when the raw material is put inside the inner cylinder, the inner cylinder inner surface is scooped up in a heat medium and roasted while sliding.
The raw material proceeds to the rear end (the end opposite to the charging port) according to the inclination of the inner cylinder while being stirred together with the heat medium. The rear end of the inner cylinder is a net cylinder from the middle. When the raw material and the heat medium that have slid reach here, the heat medium falls through the mesh, the raw material remains on the net, proceeds to the rear end, and is discharged. Is done. The heat medium that has fallen under the net falls to the inner peripheral surface of the outer cylinder surrounding the inner cylinder. Since the inclination of the outer cylinder is provided in a direction opposite to the inclination of the inner cylinder, the outer cylinder moves to the tip of the roasting cylinder (raw material input opening side) while sliding in the rotating cylinder.

Near the tip of the outer peripheral surface of the outer cylinder, a heat medium pumping fin is erected, and the heat medium is scooped by this fin and put into the inner cylinder. Further, since the outer cylinder is heated by the burner, the heat medium spilled from the inner cylinder is heated again.
Thus, the heat medium circulates through the inner cylinder and the outer cylinder, and the raw materials are continuously roasted.

However, the heat medium circulates between the inner cylinder and the outer cylinder while repeating heat absorption and heat dissipation, so that the heat medium can not maintain a predetermined particle size by being lost or worn while rolling in the roasting cylinder, Discoloration / denaturation is caused by long-term heating, which changes the flavor of the manufactured product or makes it look bad.
Therefore, even in the case of the conventional roasting drum (the heat medium is sand), it was necessary to replace the old sand with a new one. However, there is only a method of throwing in a lot of new sand and allowing old sand to overflow from the roasting cylinder, or dismantling and removing the machine once, and it can not be replaced sufficiently, and it is troublesome and time consuming There was a problem that it took.

  Accordingly, the present inventor finally made the present invention as a result of diligent research in view of the above-mentioned points, and a feature thereof is a roasting machine equipped with a double cylinder type roasting cylinder, the roasting cylinder Has a mechanism for rotating in both forward and reverse directions, and an opening is provided on the outer circumferential surface of the outer body, and the inner circumferential surface covers the opening, and the tip is erected apart. It is in the point provided with the diagonal fin.

  Here, as described above, the “double cylinder type roasting cylinder” is a truncated cone having a horizontal axis as a rotation axis and a central axis overlapping with this rotation axis (the circumference of both ends is large or small) ) And the frustoconical outer cylinder disposed outside the inner cylinder, the inclination direction of the inner cylinder circumferential surface and the inclination direction of the outer cylinder circumferential surface are opposite to each other. Say things. A heating medium is put into the inner cylinder, and the work material put into the inner cylinder is heated while heating the roasting cylinder. The details of this mechanism are the same as those of the conventional example described above, and the same applies to the present invention.

  The rotation of the roasting cylinder can be changed in both forward and reverse directions. There is no limitation on the structure provided for the change. The forward direction and the reverse direction of rotation refer to the direction in which the heat medium put into the inner cylinder is hardly discharged as “forward direction” and the direction in which it is positively discharged as “reverse direction”. Call and distinguish. It can be said that the present invention includes a mechanism that can easily discharge the entire amount of the heat medium by converting the rotation from the forward direction to the reverse direction.

  The structure proposed by the present inventor as a structure having the property that the heat medium is not discharged in a certain direction (forward direction) by the rotation of the roasting cylinder and is positively discharged in the reverse direction is “the outer circumferential surface” Has an opening, and the inner peripheral surface is provided with an oblique fin covering and covering the opening, and the tip thereof being erected apart ". Note that the number of openings is not limited to one.

  The “opening” provided on the outer circumferential surface of the outer body is a “heat medium outlet”. If there is no structure on the inner circumferential surface of the outer body, the heat medium that slides on the inner circumferential surface is Regardless of which direction the roaster rotates, it will be discharged (discharged to the outside) at this opening.

So, when the heat medium that slides on the outer peripheral surface of the outer body during rotation approaches the opening position, it will be “ridden”, and when it exceeds the opening position, it will be “dismounted” from a position away from the peripheral surface. . However, when the roasting cylinder is rotated in the opposite direction (the heating medium also slides in the opposite direction, the inner surface of the outer cylinder is slid in this direction) Will be discharged. The above function tilts the standing direction of this “lid” from the outer periphery of the outer body to the direction off the axis rather than the direction of the rotation axis (“covering across the opening” means from the periphery of the opening It means that it extends in the circumferential direction, not in the centripetal direction, and "the tip is separated" means that the extending tip extends in the circumferential direction but does not reach the inner peripheral surface of the outer trunk. It means).
Such a “lid” is called “oblique fin”. You may provide the 2nd fin which equalizes the standing direction (angle with a tangent) of this diagonally-arranged fin in the position which crosses opening rather than opening periphery. By doing so, the heat medium existing in the outer body during forward rotation (roasting process) does not reach the opening even if it slides under it without being swept away by the first fin, and is difficult to leak. preferable. However, there is actually a contradiction between the function of preventing wasteful leakage of the heat medium during forward rotation and the function of completing quick and reliable heat medium discharge during reverse rotation. That is, if the shape and size of the opening and the length, height, and inclination angle of the oblique fin are selected appropriately, the heat medium may not reach the opening when rotating in the forward direction without providing a second fin. It has been found by experiment, and in that case, it is better not to attach the second fin, which is an element that hinders discharge of the heat medium during reverse rotation.
Further, the oblique fin is not limited to a flat plate, and may be curved, for example. In addition, it is basic to provide a forward / reverse rotation changeover switch and manually switch it with reference to the appearance, calendar, etc., but if possible, by attaching a timer or color identification sensor and interlocking with the drive device, For example, appropriate control can be performed even when the input of the raw material is stopped and a certain time lag is added and then the forward rotation is automatically switched to the reverse rotation. Further, the type and details of the forward / reverse switch used are not limited at all.

“Edible granules” are used as the “heat medium”. The properties and materials of edible grains are as described above, but they are listed again.
“Edible granules” are those that can be taken orally (ie, are not toxic and have little or no loss of texture) and maintain the structure of the granules during device operation (ie, not deliquescent, roasted, It does not melt even when roasted. Typical examples are sodium chloride (sodium chloride). In addition, potassium chloride, magnesium chloride, calcium chloride, iron (III) chloride, zinc sulfate, calcium carbonate, magnesium hydroxide, magnesium carbonate, biotin, sodium glutamate, calcium glutamate A simple substance or a mixture of tripotassium phosphate, tricalcium phosphate, potassium sulfate, calcium sulfate, magnesium sulfate, riboflavin, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, and the like can be used. These are eventually approved as food additives and are safe to be taken orally.
The size (average particle diameter) is not particularly limited, and may be approximately the same as sand (ceramic grains) conventionally used in roasting machines.

A typical heat medium is sodium chloride (sodium chloride) as described above. However, when salt is used instead of the conventional sand, the conventional roasting cylinder is made of iron, and therefore, iron rust is accelerated by chloride ions. This rust is mixed with the salt circulating in the roasting cylinder, and if mixed, it moves to the product (roasted vegetables) and adds rust.
Among the edible granules described above, those containing chloride ions include potassium chloride, magnesium chloride, calcium chloride, and iron (III) chloride in addition to sodium chloride (sodium chloride).

  Therefore, when using salt (or the one that promotes the above-mentioned rust formation) as the heat medium, it is preferable to use a roasting drum that has corrosion resistance. Stainless steel is typical, but it can be used if it has corrosion resistance, heat resistance, and wear resistance required for roasting drums. In addition, titanium (para titanium alloy), plating can be used. Treated steel, steel treated with parkerizing (phosphate coating), steel treated with triiron tetroxide coating, and other steel coated with the above properties are suitable.

  The to-be-roasted material put into the roasting machine having such a structure is not particularly limited. Examples of foods that are preferred by roasting include, as far as the present inventors have made trial production, pumpkins, peppers and okra as fruit vegetables, sprout as sprouted vegetables, cabbage and lettuce as leaf vegetables. As stem vegetables, lotus root, asparagus, onion, broccoli and cauliflower as flower vegetables, and carrot, burdock, sweet potato, potato and the like as root vegetables were suitable.

Furthermore, one or a plurality of types of roasting materials as described above are pulverized, and, for example, starch and water are added and kneaded to form a paste, which is then molded into a thin plate or stick. It can also be used as a roasting material. Of course, when the material to be roasted itself contains a lot of starch, it is not necessary to add it.

  The present invention is a roasting machine having a double cylinder type roasting cylinder, the roasting cylinder has a mechanism for rotating in both forward and reverse directions, and an opening is formed on the outer peripheral surface of the outer cylinder. The fluid roasting machine is provided with a slanting fin that is provided and covers the opening across the inner peripheral surface, and the tip is set apart from the opening, and has the following effects This is a very advanced invention.

(1) Vegetables can be made into snack food without using oil.
(2) An opening for discharging the heat medium is provided, which is accompanied by oblique fins that prevent the heat medium from leaking during the roasting operation and promote the discharge of the heat medium during the discharging operation. The operation of removing the heat medium in the roasting cylinder becomes reliable and simple. Therefore, the replacement work becomes simple and takes a short time, and loss is hardly generated.

It is a perspective view which shows the external appearance of the roasting cylinder of the continuous roasting machine which concerns on this invention. It is a schematic perspective view for showing the internal structure of the roasting cylinder shown in FIG. It is a schematic perspective view which shows the state which cut the center of the roasting cylinder shown in FIG. It is a schematic perspective view which shows the state which cut | disconnected the center only about the outer side cylinder of the roasting cylinder shown in FIG. FIG. 2 is a perspective view schematically and schematically showing an arrangement state of an opening provided in an outer cylinder of the roasting cylinder shown in FIG. 1 and oblique fins arranged inside the opening. FIG. 2 is a perspective view schematically and schematically showing an arrangement state of heat medium circulation fins arranged between an inner cylinder and an outer cylinder of the roasting cylinder shown in FIG. 1. (A) And (b) is a schematic front view for showing the function of the oblique fins. FIG. (A) shows a state during forward rotation, and (b) shows a state during reverse rotation. Is.

1 to 6 are all schematic perspective views showing the external appearance or the internal structure of a roasting cylinder 2 of a continuous roasting machine 1 according to the present invention (hereinafter referred to as “the present invention roasting machine 1”). The roasting cylinder 2 is composed of an inner cylinder 3 and an outer cylinder 4, which are connected and co-operated. Further, the inner cylinder 3 and the outer cylinder have a concentric truncated cone-shaped structure (hence “nesting”), and each circumferential surface is a normal line (a straight line on the circumferential surface of the truncated cone). The line passing through the vertex is not parallel to the central axis. This is called “inclined”.
The inclination direction of the inner cylinder and the inclination direction of the outer cylinder are opposite.

A raw material input port 5 is provided at the tip of the roasting cylinder 2, and all the raw materials input from here are introduced into the inner cylinder 3.
The inner cylinder 3 has a mesh cylinder 32 having a fine mesh at the rear end side of about 1/3, and is connected to the cylinder cylinder 31 on the front end side without a seam.
The cylinder body 31 is provided with a plurality of heat medium circulation inlets 311 in the vicinity of the tip, and the heat medium pumping fins 6 are provided radially on the outer surface of each heat medium circulation inlet 311. 4 is reached.
Further, on the inner peripheral surface of the cylinder body 31, a heat medium lifting fin 312 is fixedly provided in the longitudinal direction (rotational axis direction) at a position where it does not interfere with the heat medium circulation inlet 311 and the net body 32.

The outer cylinder 4 has a closed front end and an open rear end, and the rear end circumscribes the rear end of the inner cylinder 3.
Further, a heat medium discharge port 41 is formed in the peripheral surface of the outer body 4, and two oblique fins 411 and 411 ′ are erected on the inner surface side of the periphery of the discharge port 41. The presence of the heat medium discharge port 41 and the oblique fins 411 is the greatest feature of the present invention.
The oblique fins 411 are erected in the axial direction of the roasting cylinder 2 and are inclined in the circumferential direction. In this example, the oblique fins 411 are approximately 30 degrees.
One oblique fin 411 may be provided at a position straddling the heat medium outlet 41. In this example, one sheet is provided on the discharge port 41 and one sheet is provided at a position across the discharge port 41.

Hereinafter, an example of the roasting method by the roasting machine 1 of the present invention equipped with the roasting cylinder 2 will be described.
Prior to the introduction of the raw material A, first, the roasting machine 1 of the present invention is heated and the heat medium B is heated. For this purpose, the roasting cylinder 2 is rotated forward, the outer cylinder 4 is heated by the burner 7, and an appropriate amount of the heat medium B is input from the raw material input port 5.

The heat medium B is occasionally agitated by the heat medium hoisting fins 312 while sliding on the inner surface of the cylindrical body 31 portion of the rotating inner body 3 and reaches the net body 32.
The heat medium B that has passed through the mesh by the mesh cylinder 32 and dropped is guided to the inner surface of the outer cylinder 4. Since the outer cylinder 4 is inclined in the direction opposite to the inner cylinder 3, the heat medium B sliding on the inner surface moves from the rear end side to the front end side. At this time, since the temperature of the outer cylinder 4 is raised by the burner 7, the heat medium B in contact with the outer cylinder 4 is heated.

  The situation when the heat medium B moves on the inner surface of the outer cylinder 4 is not in the form of slipping while accumulating on the bottom portion, depending on the friction coefficient of the inner surface, but is dragged by the rotation and ascends the inner surface, but loses gravity. Move with the image of falling. Therefore, when the heat medium B passes through the heat medium discharge port 41, the heat medium discharge port 41 is in a state in which a thing that cannot run up the inner surface of the outer body 4 falls rather than moving in the longitudinal direction. Will pass through. At that time, the oblique fin 411 covers the discharge port 41, and when it rotates forward, it rides on the oblique fin 411 and passes over the discharge port 41, and is difficult to leak.

  The heat medium B that has passed through the position of the heat medium discharge port 41 continues to be heated, moves to the tip, is scooped by the heat medium pumping fins 6, and flows into the inner cylinder 3 from the heat medium circulation inlet 311. In this way, the heat medium B circulates inside the inner cylinder 3 and the outer cylinder 4.

In this state, the raw material A is input from the raw material input port 5. Immediately, the raw material A moves to the rear end side while repeating the motion of being dragged by the rotation of the inner cylinder 3 together with the heat medium B, rushing up the inner surface, and dropping at a stage where it ran up to some extent. The heat medium lifting fin 312 also contributes to the operation of “running up the inner surface”.
During this operation, the heat medium B covers the surface of the raw material A and heats the raw material A rapidly. The moisture in the raw material A is vaporized by rapid heating, and a large number of pores are generated inside the raw material by the expansion force (this is called expansion).
This is the principle of roasting by the roasting machine 1 of the present invention. For the roasting, it is a condition that the raw material A contains water. However, if the amount of water is too large, the temperature cannot be increased rapidly, and the raw material A does not expand or is insufficient. Therefore, the moisture content is adjusted by pre-drying according to the type and shape of the raw material A (for example, the thickness in the case of slicing), the rotational speed of the roasting drum 2 is adjusted, etc. It is necessary to have a proper roasting time.

In this way, the raw material A is roasted and reaches the net cylinder 32 portion. Since the net cylinder 32 also rotates, the raw material A moves to the rear end opening while rotating in the net cylinder 32 together with the heat medium B.
At that time, the heat medium B is spilled from the mesh of the mesh cylinder 32. At this time, since the roasting cylinder 2 is rotating forward, the spilled heat medium B returns to the inner cylinder 3 as described above.
On the other hand, the roasted raw material A passes through the net cylinder 32 and is discharged from the roasting cylinder 2.

The above is an example of the processing method of the raw material A by the roasting machine 1 of the present invention, and the processing is continuously performed.
However, after a long period of operation, the heat medium B gradually deteriorates (odor, discoloration, wear, etc.). In that case, in the present invention, the discharge of the deteriorated heat medium B is achieved by a really simple method.

That is, the operation is temporarily suspended and the roasting cylinder 2 is rotated in the reverse direction. When reversely rotated, the heat medium B spilling from the net cylinder 32 and moving in the outer cylinder 4 is scooped up by the oblique fins 411 and automatically discharged from the heat medium discharge port 41. There is no need to adjust the apparatus or add a new member for discharging, and the roasting cylinder 2 is simply rotated in the opposite direction.
Thereafter, a new heat medium B is introduced, and an initial state is obtained.

FIG. 7A shows a state where the oblique fins 411 prevent leakage of the heat medium during forward rotation, and FIG. 7B shows the state where the oblique fins 411 assist the discharge of the heat medium during reverse rotation. It shows the state of being.
In the figure, two oblique fins 411 are provided. Among these, the regular oblique fins 411 standing at the peripheral edge of the opening of the heat medium discharge port 41 are the regular oblique fins 411, and the oblique fins 411 ′ standing in the opening are regular when rotating in the forward direction. This is to prevent the heat medium B that could not be removed by the oblique fins 411 from being discharged. However, when the inventor made a prototype experiment, if the heat medium discharge port 41 has a size of 30 × 60 (mm), for example, and the oblique fin 411 has a length and blade length of 155 × 80 (mm), It has been confirmed that the installation fin 411 alone functions properly.

DESCRIPTION OF SYMBOLS 1 Continuous roaster according to the present invention 2 Roasting cylinder 3 Inner cylinder 31 Tube cylinder 311 Heat medium circulation inlet 312 Heat medium lifting fin 32 Net cylinder 4 Outer cylinder 41 Heat medium discharge port 411 Slanting fin 411 'oblique installation Fin (second piece)
5 Raw material inlet 6 Heating medium pumping fin 7 Burner A Raw material B Heating medium

Claims (3)

  A roasting machine having a double cylinder type roasting cylinder and using edible granules as a heat medium, the roasting cylinder having a mechanism for rotating in both forward and reverse directions, and an outer cylinder A fluid roast characterized in that an opening is provided in the peripheral surface, and an inner peripheral surface is provided with an oblique fin that covers and covers the opening, and a tip is provided to stand apart. Machine.   The edible granules are sodium chloride, potassium chloride, magnesium chloride, calcium chloride, iron (III) chloride, zinc sulfate, calcium carbonate, magnesium hydroxide, magnesium carbonate, biotin, sodium glutamate, calcium glutamate, tripotassium phosphate. The fluid roasting machine according to claim 1, which is a simple substance or a mixture selected from tricalcium phosphate, potassium sulfate, calcium sulfate, magnesium sulfate, riboflavin, dipotassium hydrogen phosphate, and potassium dihydrogen phosphate. The heat medium put into the inner cylinder is sodium chloride, and the roasting cylinder is made of stainless steel, titanium (para titanium alloy), plated steel, and parkerizing steel (phosphate coating treatment). The fluid roasting machine according to claim 1, wherein the steel is made of any one of steels treated with triiron tetraoxide coating.

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