JPH11206575A - Heating agitating device for fluid food - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device capable of efficiently/uniformly heating a fluid foodstuff such as jam and various sauces and capable of reducing a cost when heating the fluid foodstuff by carrying an electric current while agitating the foodstuff. SOLUTION: A fluid foodstuff 13 is agitated simultaneously with current- carrying heating by relatively turning agitating electrodes to a vessel while applying voltage between the mutual agitating electrodes by inserting the agitating electrodes 15A and 15B also serving as an agitating member and an electrode by two pieces or more into a cylindrical vessel 11 to house the fluid foodstuff 13. The agiating electrodes are relatively turned to the vessel 11 while applying voltage between the agitating electrodes and a vessel 11 side electrode by inserting one or more agitating electrodes 15A and 15B... into the vessel 11 by forming the electrodes at least on the inner peripheral surface of the cylindrical vessel 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for heating a liquid food material such as a fruit jam, a cooking sauce, or mayonnaise having fluidity in a liquid state or a liquid-solid mixed state while stirring. .

[0002]

2. Description of the Related Art In the production of fruit jams such as strawberry jam, cooking sauces, and fluid food materials such as mayonnaise, a heating step is often required for the purpose of sterilization and cooking. In addition, since fruit jams of this type are relatively viscous and often have non-uniform physical properties, heat them with stirring to uniformly heat the entire fluid food material to be heated. Is often required.

[0003] Conventionally, as an apparatus for heating this kind of fluid food material while stirring it, a fluid food material is accommodated in a container (heating tank) and a stirring blade is inserted into the fluid food material in the container. There is known an apparatus in which a stirring blade is rotated while a container is heated from the outside using a heating source such as a high-temperature steam gas or an electric heater.

However, in such a conventional device,
Since the fluid food material in the heating tank is heated by heat conduction from the outside, it takes a long time to raise the temperature of the entire fluid food material in the heating tank to the required temperature, which results in processing efficiency and productivity. However, there is a problem that the food quality must be lowered and the quality of food may be deteriorated.

In recent years, a heating method called so-called energization heating (Joule heating) has been put to practical use, in which a current is applied to the food material itself and the food material is heated by self-heating due to the electric resistance of the food material. Has been reached. When such an electric heating is applied, the food material generates heat from within itself, so that the temperature of the food material can be increased in a much shorter time than when heating from the outside using a heat source. Thus, it is possible to improve the processing efficiency and the productivity, and to prevent the deterioration of the food quality.
As a device for electrically heating a food material having fluidity, for example, a liquid food material, it has already been disclosed in Japanese Patent Publication No.
No. 33024 proposes a device for continuously energizing and heating a fluid food material flowing continuously in a pipe.

[0006] In the proposed device, at least two or more portions are provided at predetermined intervals from the upstream side to the downstream side of the pipeline, and a portion corresponding to the inner surface of the pipeline is formed of a conductive material. The part is used as an electrode for electric heating, and therefore, in the proposed device, a current flows between an electrode on the upstream side and an electrode on the downstream side of the flowable food in the flowable food flowing in the pipe, so that the current flows. Heat will be applied.

[0007] However, in the case of the above proposed apparatus, it is necessary to continuously flow the fluid food material to be heated into the pipeline, and in this case, when the fluid food material is a highly viscous material such as jam. However, there is a problem that it is difficult to smoothly and continuously flow in the pipeline, and even if the flow can be continuously performed, the pumping means such as a pump must be enlarged. Further, in the proposed apparatus, since the fluid food material is not stirred in the pipeline, it is difficult to uniformly heat the fluid food material, and there is a problem that uneven heating is likely to occur.

[0008] One idea for solving such a problem is to use a batch-type energizing heating vessel and to energize and heat the fluid food material while stirring the fluid food material in the energizing heating vessel with stirring blades. It is conceivable to apply a heating and stirring device. An example of such an electric heating device is shown in FIGS.

In FIG. 13 and FIG. 14, a container 1 for accommodating a fluid food material 7 is made of an insulating material so as to form a rectangular shape as a whole. Has a pair of flat electrodes 3A and 3B provided in parallel. A stirring blade 5 is inserted into the container 1 from above. The fluid food material 7 in the container 1 is stirred by rotating the stirring blade 5, and at the same time, a voltage is applied between the electrodes 3A and 3B. Fluid food material 7
The current is supplied to the heater to carry out current heating.

[0010]

FIG. 13 and FIG. 14 described above.
In the heating stirrer using the electric heating shown in FIG. 1, the fluid food material 7 in the container 1 can be stirred by rotating the stirring blade 5, but since the container 1 has a rectangular shape, its four corners 1A １1D is a dead space for the stirring flow, and shows a tendency that the food material in the four corners 1A to 1D stays without stirring. Therefore four corners 1A
There is a strong possibility that the food material staying at ~ 1D is not mixed with the food material of the other portion, resulting in insufficient heating or conversely overheating. Especially when heating fluid food materials with high viscosity and uneven physical properties such as jams, it is difficult for the current to flow through the food material evenly. There is a risk of causing poor heating.

As one method for solving the above-mentioned problem, as shown in FIG. 15, the container 1 is formed in a cylindrical shape so as to have a circular shape in plan view, and its inner peripheral surface is opposed to the cylindrical shape. It is conceivable to dispose the electrodes 3A and 3B in a curved shape on the side to be formed. When the cylindrical container 1 is used as described above,
Unlike the case of a rectangular container, there is no corner portion, that is, there is no dead space for the stirring flow by the stirring blade 5, and the fluid food material in the container 1 is uniformly mixed and stirred as a whole. become. However, in this case, the following problem newly occurs.

That is, since the pair of electrodes 3A and 3B are opposed to each other in a curved state, the interval L1 between the ends of the electrodes 3A and 3B is shorter than the interval L2 between the central portions. When the current is applied to the food material between the electrodes 3A and 3B, the current is concentrated at a position between the ends of the electrodes 3A and 3B, and the current density distribution becomes extremely uneven, thereby deteriorating the heating efficiency. When the rectangular containers shown in FIGS. 13 and 14 are used, the electrodes 3A and 3B are simply flat plates, so that the cost is low.
When the cylindrical container shown in (1) is used, it is necessary to form the electrodes 3A and 3B in a curved shape, and there is also a problem that the molding cost has to increase the manufacturing cost of the apparatus.

Further, the following problems are common to the heating and stirring device using the rectangular container shown in FIGS. 13 and 14 and the heating and stirring device using the cylindrical container shown in FIG. is there. That is, the stirring blade is located at a position between the electrodes 3A and 3B. When the stirring blade is formed of a conductive metal, the conductivity of the stirring blade is generally lower than the conductivity of the fluid food material. Electrode 3
The current between A and 3B concentrates on the stirring blade,
A short circuit path for the current flowing through the flowable food material is formed,
Electric current does not flow through the entire flowable food material in the container, and the heating efficiency is reduced. In order to solve this problem, it is conceivable to form the stirring blade with an electrically insulating resin or the like. In this case, the stirring blade made of an insulating material is located between the electrodes 3A and 3B on both sides. Therefore, there is a problem that the current is interrupted by the stirring blades, thereby lowering the heating efficiency as described above. In addition, in order to provide the stirring blades made of an insulating material with the same strength as that of metal, the cost increases. There is a new problem that cannot be avoided.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is intended to be applied to a method of heating a fluid food material, particularly a fluid food material such as jam having high viscosity and non-uniform physical properties, while stirring the fluid food material. It is an object of the present invention to provide an apparatus capable of efficiently and uniformly heating a material at low cost.

[0015]

Means for Solving the Problems In order to solve the above-mentioned problems, the heating and stirring apparatus of the present invention basically comprises:
The agitating member for agitating the fluid food material in the cylindrical container is also used as an electrode for electric heating. Here, as an electrode for energizing the fluid food material in the container, at least a pair of electrodes is required, but the case where all of the pair or more electrodes are used as a stirring member as a stirring electrode is defined. This is the first aspect of the present invention.

Specifically, the apparatus for heating and stirring a fluid food material according to the first aspect of the present invention is a container for accommodating a fluid food to be heated, and is formed so that at least the inner surface has electrical insulation. A cylindrical container, wherein:
Two or more stirring electrodes inserted at a distance from each other;
A rotating device for rotating the stirring electrode relative to the container in the container; and a power supply device for applying a voltage between the stirring electrodes; By rotating the stirring electrode relative to the container while applying a voltage between the stirring electrodes while the food is contained, the fluid food is stirred while being electrically heated. Things.

Here, the stirring electrode only needs to rotate relatively to the container.
It is sufficient if one of them is fixed and the other is turned or rotated, and this point is defined by the inventions of claims 2 and 3.

That is, in the apparatus for heating and stirring a fluid food material according to the second aspect of the present invention, the container is fixed, and the turning means is configured to turn the stirring electrode. Is what you do.

On the other hand, the apparatus for heating and stirring a fluid food material according to the third aspect of the present invention is characterized in that the stirring electrode is held in a fixed state, and the swirling means is configured to rotate the container. Things.

According to a fourth aspect of the present invention, in the heating and stirring apparatus for a fluid food material according to the first aspect, at least one of the two or more stirring electrodes is provided on an inner peripheral surface of a container. Characterized in that it is arranged to rotate relative to the container while touching,
In this way, by relatively turning while at least one of the stirring electrodes is in contact with the inner peripheral surface of the container, it becomes possible to scrape off the food material attached to the inner surface of the container.

According to a fifth aspect of the present invention, there is provided a heating and stirring apparatus according to the first aspect,
This defines the position of the stirring electrode.

According to a fifth aspect of the present invention, there is provided the heating and stirring apparatus for a fluid food material according to the first aspect, wherein the two or more stirring electrodes are arranged on an axis with respect to a center axis position of the container. The fluid stirring and heating device for a fluid food material according to the invention of claim 6 is characterized in that the heating and stirring device according to claim 1 is arranged symmetrically. Each stirring electrode is arranged so that the distance from the stirring electrode to each of the stirring electrodes is different from each other.

[0023] On the other hand, the invention of claim 7 provides a method for heating a fluid food material in a container, the method comprising:
One defines the case where it is formed on at least the inner peripheral surface of the container and the other electrode is a stirring electrode which also serves as a stirring member.

More specifically, the apparatus for heating and stirring a fluid food material according to the invention of claim 7 comprises: a cylindrical container for containing the fluid food to be heated; At least one stirring electrode inserted into the container; rotating means for rotating the stirring electrode relative to the container in the container; and the stirring electrode. And a power supply device for applying a voltage between the fixed electrode and the fixed electrode; and stirring while applying a voltage between the stirring electrode and the electrode on the container side in a state where the fluid food is contained in the container. The fluid food is agitated while being electrically heated by rotating the electrode relative to the container.

Also in the case of the present invention, the stirring electrode may be rotated relatively to the container. Therefore, one of the stirring electrode and the container is fixed and the other is rotated. It is the invention of claims 8 and 9 that defines this point.

That is, an apparatus for heating and stirring a fluid food material according to the invention of claim 8 is the heating and stirring apparatus according to claim 7, wherein the container is fixed, and the rotating means comprises:
The stirring electrode is configured to rotate.

According to a ninth aspect of the present invention, in the heating and stirring apparatus for a fluid food material according to the seventh aspect, the stirring electrode is held in a fixed state, and the rotating means rotates the container. It is characterized in that it is configured to cause

According to a tenth aspect of the present invention, in the heating and stirring device for a fluid food material according to the seventh aspect, the heating and stirring device is in contact with the inner peripheral surface of the container and relatively along the inner peripheral surface thereof. It is characterized in that a scraping member that circulates around is provided, and the food material attached to the inner surface of the container is scraped off by the scraping member.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION

[0030]

1 and 2 show a heating and stirring apparatus according to an embodiment of the present invention.

In FIG. 1 and FIG. 2, a container 11 is for containing a fluid food material 13 to be heated.
It is made into a bottomed cylindrical shape as a whole, and the upper side is open. At least the inner surface of the container 11 may be formed of an electrically insulating material such as a synthetic resin. For example, the entire container may be formed of an electrically insulating material, or a synthetic resin may be formed on the entire inner surface of a metal container body. Lining or coating with an electrically insulating material such as 1 and 2, the container 11 is held in a non-rotating state, that is, in a fixed state.

In the container 11, a pair of stirring electrodes 15A and 15B are inserted from above. The pair of stirring electrodes 15A and 15B are made of a conductive material such as a metal in a flat plate shape, and are parallel to each other and in the container 1.
Container 1 so as to be axially symmetric with respect to the center axis O of
1 vertically. The upper ends of the stirring electrodes 15A and 15B have support arms 17A and 1B.
7B and the rotation feeder 19 are connected to the rotation shaft 21. The rotation shaft 21 is configured to be rotated about the axis by a rotation drive source 23 including a motor, a speed reducer, and the like disposed above the container 11. Here, the stirring electrodes 15 </ b> A and 15 </ b> B are arranged such that one edge 16 in the width direction is in contact with the inner peripheral surface of the container 11. These stirring electrodes 15 </ b> A and 15 </ b> B are electrically connected to a power supply 25 via the rotary power supply 19. This power supply device 25 is for applying a voltage for energizing and heating between the stirring electrodes 15A and 15B.
A high-frequency power supply or a commercial AC power supply can be used. Note that the stirring electrodes 15A and 15B are always
The container 11 may be configured to be inserted into or removed from the container 11 by being moved up and down by a suitable elevating means.

In the heating and stirring apparatus shown in FIGS. 1 and 2 as described above, a fluid food material 13 to be heated, such as jam or various sauces, is poured into a container 11, and the fluid food material 13 is poured into the fluid food material 13. When a voltage is applied between the stirring electrodes 15A and 15B by the power supply device 25 in a state where the stirring electrodes 15A and 15B are immersed, a current flows through the fluid food material 13 between the stirring electrodes 15A and 15B, and the fluid food Heat is generated by the electric resistance of the material 13 and the temperature rises. That is, so-called electric heating (Joule heating) is performed. Further, at the same time as the energization and heating as described above, the rotation drive source 23 is operated to move the stirring electrodes 15A and 15B into the container 1.
1 while immersed in the fluid food material 13 in the container 11
Is swirled continuously about the central axis position O of the liquid material 13 to generate a swirling flow in the fluid material 13 in the container 11, and the fluid food material can be stirred. In this way, by heating the flowable food material 13 while energizing while stirring, the temperature of the flowable food material in the container 11 can be raised uniformly. Stirring electrode 1
5A and 15B can be effectively scraped off food material adhering to the inner peripheral surface of the container 11 because one edge 16 of the 5A and 15B rotates while being in contact with the inner peripheral surface of the container 11.

Here, in the examples of FIGS. 1 and 2, the stirring electrodes 15A and 15B are vertically inserted into the container 11, but as shown in FIG.
5B may be inserted into the container 11 at a predetermined angle θ with respect to the vertical direction. In this case, not only the swirling flow but also the vertical stirring A force can also be given, so that the stirring effect can be further enhanced.

1 and 2, the stirring electrodes 15A and 15B made of a conductive material such as a metal are arranged so that one edge 16 in the width direction thereof is in contact with the inner peripheral surface of the container 11. The stirring electrode itself has a function of scraping off food materials attached to the inner peripheral surface of the container 11, but in some cases, as shown in FIG. 4, a stirring electrode made of a conductive material such as a metal. A scraping plate 27 made of an insulating material such as rubber or synthetic resin is attached to one edge in the width direction of 15A (15B) by appropriate fixing means such as a bolt 29, and the scraping plate 27 is 11 may be configured to be in contact with the inner peripheral surface.

Further, in the case of using a flat plate as the stirring electrodes 15A and 15B, as shown in FIG. 5, an appropriate number of through holes 30 penetrating in the thickness direction of the stirring electrodes 15A and 15B are formed. Is also good. If the through holes 30 are formed in the plate-like stirring electrodes 15A and 15B in this manner, a turbulent flow is generated with respect to the flow of the fluid food material 13 when the stirring electrodes 15A and 15B rotate, and the stirring effect is obtained. Can be increased.

In the examples shown in FIGS. 1 and 2, a pair of stirring electrodes 1 are used.
Although 5A and 15B are configured to be inserted into the container 11, three or more arbitrary number of stirring electrodes can be used. For example, FIGS. 6 and 7 show examples using four stirring electrodes 15A to 15D.

In the example shown in FIGS. 6 and 7, each of the four stirring electrodes 15A to 15D is made of a conductive material such as a metal in the shape of a flat plate. And the central axis O of the container 11
Are inserted into the container 11 so as to be axially symmetric with respect to the support arms 17A to 17D and the rotary power supply unit 1
9 to the rotating shaft 21. Of the four stirring electrodes 15A to 15D, the two stirring electrodes 15A and 15D at both ends are disposed such that one edge 16 in the width direction thereof is in contact with the inner peripheral surface of the container 11. . here,
The stirring electrode 15 is supplied from the power supply device 25 via the rotary power supply unit 19.
As a mode of supplying power to A to 15D, a configuration may be adopted in which power is supplied so that the mutually-agitating stirring electrodes are in different phases, and by such a configuration, the fluid food is supplied between the mutually-agitating stirring electrodes. The material 13 can be energized.

When three or more stirring electrodes 15A to 15D are provided as shown in FIGS. 6 and 7, the stirring electrodes 15A to 15D are inclined at a predetermined angle with respect to the vertical direction as described above. The through holes 30 may be formed in the stirring electrodes 15 </ b> A to 15 </ b> D as shown in FIG. 5.
For A and 15D, a scraping plate made of rubber, synthetic resin or the like may be separately attached to the stirring electrode body made of a conductive material such as metal as described with reference to FIG.

On the other hand, the shape of the stirring electrode is not limited to the flat plate as shown in each of the above-mentioned embodiments, but may be various shapes. For example, FIGS. 8 and 9 show examples in which round rod-shaped electrodes are used as the four stirring electrodes 15A to 15D, respectively.

8 and 9, the stirring electrodes 15A to 15A
5D is made of a conductive material such as a metal into a round bar shape, and has support arms 17A to 17D and a rotating power supply unit 1D.
9, and is also electrically connected to a power supply device 25 via a rotation feeder 19. Here, regarding the arrangement of the stirring electrodes 15A to 15D, unlike the above-described examples, the distances L1 to L4 from the position of the center axis O of the container 1 (the center of rotation) to each of the stirring electrodes 15A to 15D are different. They are positioned differently. Further, among the stirring electrodes 15 </ b> A to 15 </ b> D, the outermost stirring electrode 15 </ b> D is set to be in contact with the inner peripheral surface of the container 11. It should be noted that the mode of supplying power to each of the stirring electrodes 15A to 15D may be the same as in the examples of FIGS.

In such an example, since the round rod-shaped stirring electrodes 15A to 15D have different turning radii in the container 11, the fluid food material 13 at all positions in the container 11 is effectively stirred. be able to. In addition, since the outermost stirring electrode 15D rotates while being in contact with the inner peripheral surface of the container 11, the food material attached to the inner peripheral surface of the container 11 can be scraped off.

In each of the above examples, the container 11 is fixed and the stirring electrodes 15A, 15B (15C, 15D) are swirled. However, in some cases, the stirring electrodes 15A, 15B (15C, 15D) may be reversed. ) Is kept in a non-rotating state, that is, in a fixed state, and by rotating the container 11 about the axis, the stirring electrodes 15A and 15B are rotated.
(15C, 15D) may be configured to rotate relatively to the container 11. An example in that case is shown in FIG. 10 corresponding to the example shown in FIG.

In FIG. 10, the container 11 has a rotating base 41.
The rotating base 41 is fixedly held on the upper side.
3 is rotatably held, and a gear train 45 is formed on the outer periphery of the rotation base 41, and a driving gear 47 is meshed with the gear train 45. And driving gear 4
Reference numeral 7 is connected to a rotary drive source 49 including a motor, a speed reducer, and the like. On the other hand, the stirring electrodes 15A and 15B are inserted into the container 11 from above, and are held in a fixed state by supporting means (not shown).

In the example shown in FIG. 10, when the rotary drive source 49 is operated, the container 11 rotates together with the rotary base 41 via the drive gear 47 and the gear train 45. here,
If the viscosity of the fluid food material 13 is high, the fluid food material 13 in the container 11 rotates and flows with the container 11, but since the stirring electrodes 15A and 15B are fixed, the stirring electrodes 15A and 15B The fluid food material 13 can be stirred. Here, the stirring electrodes 15A, 15B
The point that the fluid food material 13 is electrically heated while being stirred by the voltage application during the period is the same as in each of the above-described examples.

When the container 11 is rotated as described above, the specific configuration of the stirring electrode is
The present invention is not limited to the example shown in FIG. 10, but employs, for example, an inclined configuration as shown in FIG. 3, a configuration in which a scraping plate 27 is provided as shown in FIG. 4, or a configuration in which a through hole is formed as shown in FIG. As shown in the examples of FIGS. 6 and 7 or the examples of FIGS. 8 and 9, three or more stirring electrodes may be provided, and the shape thereof is not limited to a flat plate. , A bar shape as shown in FIG.

Further, in each of the above-mentioned examples, the configuration is shown in which all of a pair or more electrodes for supplying electricity to the fluid food material are agitating electrodes, but one of the electrodes is provided at least on the inner surface of the container 11. It may be formed. Figure 1 shows an example of such a case.
1 and shown in FIG.

11 and 12, the container 11 is entirely formed of a conductive material such as a metal, and the container 11 itself also serves as the electrode 31. The container 11 is formed in a cylindrical shape as a whole, and has a shape in which a lower bottom surface bulges downward in a curved shape. And container 11
Inside, one stirring electrode 15E is inserted from above. The stirring electrode 15E is connected to the shaft member 3 made of a conductive material such as a metal, for example, via the rotation feeder 19 on the rotation shaft 21.
3 may be connected, and a wing-shaped electrode plate 35 made of a conductive material such as metal may be spirally attached on the outer periphery of the shaft member 33. In this case, a voltage is applied between the electrode 31 also serving as the container 11 and the stirring electrode 15E by the power supply device 25, and the fluid food material 13 is energized in the meantime. Further, in the container 11, the container 11
A scraping plate 37 which is in contact with the inner peripheral surface and turns around the inner peripheral surface is inserted. The scraping plate 37 is a long plate made of, for example, rubber or synthetic resin, and is inserted into the container 11 from above, and is driven by a driving unit (not shown) to drive the inner peripheral surface of the container 11. It is configured to go around along.

In the heating and stirring apparatus shown in FIGS. 11 and 12, the flowable food material 13 in the container 11 can be electrically heated while being stirred as described above.
Further, the container 11 is rotated by circling the scraping plate 37.
, That is, the food material adhering to the inner peripheral surface of the electrode 31 can be scraped off.

In the examples shown in FIGS. 11 and 12, the container 11 itself also serves as the electrode 31, but the electrode 31 only needs to be provided at least on the inner peripheral surface of the container 11. Therefore, for example, the container body may be made of an electrically insulating material such as a synthetic resin, and the entire inner surface or the inner peripheral surface may be lined with a conductive material such as a metal.

When the electrode 31 is formed on the side of the container 11, the stirring electrode 15E which is a counter electrode of the electrode 31 is used.
Is not limited to a spiral blade shape as shown in FIGS. 11 and 12, and various shapes can be applied. Further, the number of stirring electrodes 15E in this case is not limited to one, but may be two or more.

Further, even when the electrode 31 is formed on the side of the container 11 as shown in FIGS. 11 and 12, the stirring electrode 15E is held in a fixed state and the container 11 (electrode 31) is rotated. good. In that case, as a specific configuration for rotating the container 11 (electrode 31), for example, a configuration similar to the configuration illustrated in FIG. 10 may be applied.

[0053]

According to the heating / stirring apparatus of the present invention, the fluid food material is electrically heated while being stirred,
Among the fluid food materials, food materials having particularly high viscosity and food materials having non-uniform physical properties can be efficiently and uniformly heated.

In particular, in the heating and stirring apparatus according to the first aspect of the present invention, a pair of electrodes for supplying electricity to the flowable food material is a stirring electrode which also serves as a stirring member, so that it is disposed on the side of the container. There is no need to provide a counter electrode, so that, for example, the cost for forming a curved electrode as shown in FIG. 15 becomes unnecessary, cost reduction can be achieved, and the distance between each stirring electrode is fixed. , The current density between the stirring electrodes can be made uniform, the flowable food material can be efficiently energized and heated, and furthermore, since the electrodes also serve as the stirring members, Is not obstructed by another stirring member, and thus the distribution of the current density can be made uniform, and the current can be efficiently heated.

On the other hand, in the heating and stirring device according to the seventh aspect of the present invention, one of a pair or more electrodes for supplying electricity to the fluid food material is formed on the container side, and the other electrode also serves as a stirring member. In this case, since the electrode on the container side is a cylindrical shape that is continuous in the circumferential direction of the container, the molding cost is lower than that of the curved electrode as shown in FIG. In this case as well, cost reduction can be expected, and furthermore, the portion between the electrode on the container side and the stirring electrode is not blocked by another stirring member, as described above, so that the distribution of the current density can be made uniform. Thus, the current-carrying heating efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view showing a heating and stirring device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional plan view taken along the line II-II of FIG.

FIG. 3 is a vertical sectional front view showing a heating and stirring apparatus according to a second embodiment of the present invention.

FIG. 4 is a side view showing an example of a stirring electrode used in the heating and stirring device of the present invention.

FIG. 5 is a side view showing another example of the stirring electrode used in the heating and stirring device of the present invention.

FIG. 6 is a vertical sectional front view showing a heating and stirring device according to a third embodiment of the present invention.

FIG. 7 is a cross-sectional plan view taken along the line VII-VII of FIG. 6;

FIG. 8 is a vertical sectional front view showing a heating and stirring apparatus according to a fourth embodiment of the present invention.

9 is a cross-sectional plan view taken along line IX-IX of FIG.

FIG. 10 is a vertical sectional front view showing a heating and stirring apparatus according to a fifth embodiment of the present invention.

FIG. 11 is a vertical sectional front view showing a heating and stirring apparatus according to a sixth embodiment of the present invention.

FIG. 12 is a cross-sectional plan view taken along line XII-XII of FIG. 11;

FIG. 13 is a vertical sectional front view showing an example of the prior art for the present invention.

14 is a cross-sectional plan view taken along line XIV-XIV in FIG.

FIG. 15 is a cross-sectional plan view showing another example of the prior art for the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Container 13 Fluid food material 15A-15E Stirring electrode 23 Rotation drive source as a turning means 25 Power supply device 27 Scratching plate 31 Container side electrode 37 Scratching plate

Claims (10)

[Claims] 1. A container for containing a flowable food to be heated, said container having at least an inner surface made of an electrically insulating material; Two or more inserted stirring electrodes; turning means for turning the stirring electrode relative to the container in the container; and a power supply device for applying a voltage between the stirring electrodes. The liquid food is energized and heated by rotating the stirring electrode relative to the container while applying a voltage between the stirring electrodes while the liquid food is contained in the container. A heating and stirring device for a fluid food, wherein the stirring is performed while stirring. 2. The heating and stirring device for a fluid food according to claim 1, wherein the container is fixed, and the turning unit is configured to turn the stirring electrode. 3. The heating and stirring device according to claim 1, wherein the stirring electrode is held in a fixed state, and the turning unit includes:
An apparatus for heating and stirring a fluid food, the apparatus being configured to rotate a container. 4. The heating and stirring device according to claim 1, wherein at least one of the two or more stirring electrodes is disposed so as to rotate relatively to the container while being in contact with an inner peripheral surface of the container. Has a fluid food heating stirrer. 5. The heating / stirring apparatus according to claim 1, wherein the two or more stirring electrodes are disposed axially symmetrically with respect to a center axis position of the container. . 6. The heating and stirring device according to claim 1, wherein the stirring electrodes are arranged such that the distance from the center axis position of the container to each of the stirring electrodes is different.
Fluid food stirrer. 7. A cylindrical container for containing a fluid food to be heated; an electrode formed on at least an inner surface of the container so as to be continuous in a circumferential direction; and at least an electrode inserted into the container. One stirring electrode; rotating means for rotating the stirring electrode in the container relative to the container; and a power supply for applying a voltage between the stirring electrode and the fixed electrode. The liquid food is electrically heated by rotating the stirring electrode relative to the container while applying a voltage between the stirring electrode and the electrode on the container side while the liquid food is contained in the container. A heating and stirring device for a fluid food, wherein the stirring is performed while stirring. 8. The heating and stirring device for a fluid food according to claim 7, wherein the container is fixed, and the rotating unit is configured to rotate the stirring electrode. 9. The heating and stirring device according to claim 7, wherein the stirring electrode is held in a fixed state, and the rotating unit includes:
An apparatus for heating and stirring a fluid food, the apparatus being configured to rotate a container. 10. The heating and stirring device according to claim 7, wherein a scraping member is provided, which comes into contact with an inner peripheral surface of the container and relatively circulates along the inner peripheral surface. Fluid food stirrer.