JP4339944B2 - Kneaded product heating method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technique for heating a kneaded product made from a surimi such as fish meat, and more particularly, to a technique for heating a kneaded product that is manufactured by forming it with fish oil after being shaped like a fish paste.
[0002]
[Prior art]
In order to continuously heat a kneaded product such as rice cake, a technique has been developed in which a kneaded product is conveyed between two loop-shaped electrodes as disclosed in Japanese Patent Laid-Open No. 5-137541. . In this technique, a water permeable film is arranged on the surface of the loop electrode, and both the loop electrode and the water permeable film are transported, and the transport mechanism is complicated.
[0003]
[Problems to be solved by the invention]
On the other hand, when heating the kneaded product by generating Joule heat while transporting the kneaded product, the kneaded product can be heated from the inside, compared to when steaming the kneaded product, and heating the entire product However, there is a tendency that the temperature of the electrode itself is higher on the downstream side of the heating device, and the temperature of the surface portion of the kneaded product is higher than that inside. When the temperature of the surface part of the kneaded product is high, a part thereof may spark. Thus, when a spark is generated, a current mainly flows from the portion, and the kneaded product is not heated uniformly as a whole, and temperature unevenness occurs.
[0004]
There are various types of deep-fried kneaded products such as fish cakes, burdock rolls, and squid rolls. Has been. When the kneaded product before being fried in oil is preliminarily heated with Joule heat, as described above, if the fried product is kept in a state where the temperature on the surface side of the kneaded product is high, the kneaded product expands and swells. It has been found. If the kneaded product swells when fried with oil, it cannot be commercialized and the production yield is reduced.
[0005]
An object of the present invention is to convey a kneaded product by a water-permeable film that moves while being in contact with the surface of a fixed electrode, so that the kneaded product can be heated by an apparatus having a simple structure.
[0006]
Another object of the present invention is to enable the entire kneaded product to be heated to a uniform temperature.
[0007]
[Means for Solving the Problems]
The method for heating a kneaded product according to the present invention includes a first water-permeable film made of cloth that moves along the surface of a first fixed electrode made of a plurality of plate members arranged on a support table, and a plurality of sheets arranged on the support table. The kneaded product is sandwiched between a second water-permeable film made of cloth that moves in synchronization with the first water-permeable film along the surface of the second fixed electrode made of a single plate, and the first and first A step of conveying the first and second water-permeable films between the two fixed electrodes, and the first and second fixed electrodes from the first and second fixed electrodes to the kneaded product while conveying the kneaded product. Moisture is applied to each of the water-permeable films under a state where Joule heat is generated in the kneaded product by passing an electric current through the water-permeable film to heat the kneaded product, and the Joule heat is generated in the kneaded product. And supply A step of the first and while cooling the first by cooling the second fixed electrode surface portion of the ground product through a second water-permeable film, raising the internal temperature by Joule heat, A frying step of frying the kneaded product after heating with Joule heat.
[0008]
The apparatus for heating a kneaded product according to the present invention further includes a first frying step in which the kneaded product after being heated by Joule heat is fried in oil to heat the entire kneaded product, and after fried in the first fried step A second frying step of coloring the surface of the kneaded product with oil having a temperature higher than that of the oil in the first frying step.
[0009]
The apparatus for heating a kneaded product of the present invention comprises a first fixed electrode comprising a plurality of metal plates arranged on a support base and having an energization surface, and a plurality of metal plates arranged on the support stand, on the energization surface. On the other hand, a second fixed electrode having a current-carrying surface opposed to each other with a gap substantially corresponding to the thickness of the kneaded product, and a first cloth made of cloth that moves along the current-carrying surface of the first fixed electrode and conveys the kneaded product. The first permeable film and the second fixed electrode are moved along the current-carrying surface of the second permeable film and the kneaded product is sandwiched together with the first permeable film . a second water-permeable film of fabric to be conveyed by the water permeability film, and a driving means for driving in synchronization the first and second water-permeable film, a cooling for cooling the first and second fixed electrodes and means, in each of the water-permeable film Moisture and a spray nozzle for supplying said while cooling the surface portion of the ground product by first and second fixed electrodes, to heat the interior of the ground product by Joule heat, the first and second permeability The kneaded product is conveyed between the first and second fixed electrodes by a conductive film.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0011]
FIG. 1 is a flowchart showing each step of a method for heating a kneaded product, which is an embodiment of the present invention when the present invention is applied to produce fried food. In the molding step 1, surimi such as fish meat is used as a raw material. A kneaded product such as fish cake is formed into a predetermined shape. The formed kneaded product is heated by energization heating using Joule heat in Joule heating step 2, and in this step 2, the surface portion of the kneaded product is cooled, and the surface portion In the cooled state, the internal temperature rises mainly due to Joule heat.
[0012]
Thus, the kneaded product is fried with oil in the first pot as the first frying step 3 in a state where the temperature of the surface portion of the kneaded product is set to a temperature lower than the inside. In the first frying process 3, the entire product including the surface portion of the kneaded product is heated, and then in the second kettle as the second frying process 4, the kneaded product is mainly made of oil having a temperature higher than that of the first frying process. The surface portion is heated to color the surface. The kneaded product that has been colored is commercialized through a cooling process.
[0013]
2 and 3 are diagrams showing the energization heating device used in the Joule heating process 2 described above. A plate-like first fixed electrode 11 is horizontally arranged on a support base 10a installed on a base. The plate-like second fixed electrode 12 is horizontally arranged on the support base 10b attached above and parallel to the support base 10a.
[0014]
Each of the fixed electrodes 11 and 12 can be a single plate-like metal plate as a whole, but in the case of illustration, a plurality of plate materials are disposed on the support bases 10a and 10b, respectively. Thus, the fixed electrodes 11 and 12 are formed of a plurality of metal plates. Insulating members 13a and 13b are provided between the fixed electrodes 11 and 12 and the support bases 10a and 10b.
[0015]
A power source 14 is connected to the fixed electrodes 11 and 12, and a high frequency voltage having a predetermined frequency is supplied from the power source 14, for example.
[0016]
A first water-permeable film 21 is disposed on the energization surface of the lower first fixed electrode 11 so as to move along the contact surface, and the energization surface of the upper second fixed electrode 12 is disposed on the energization surface. The second water-permeable film 22 is arranged so as to move while being in contact therewith. Each of the water permeable films 21 and 22 is endless, that is, endless, and is stretched around a plurality of guide rollers 23a to 26a and 23b to 26b, respectively. For example, the first water-permeable film 21 is passed over and the guide roller 24a and the guide roller 24b over which the second water-permeable film 22 are passed are driven at the same rotational speed by a motor, so that both The synchronous films 21 and 22 are synchronously driven in the directions indicated by the arrows at the same speed.
[0017]
In order to supply moisture to the water permeable films 21 and 22, spray nozzles 27a and 27b are provided on the upstream side in the moving direction of the water permeable films 21 and 22, respectively.
[0018]
As each of the water permeable films 21 and 22, a cloth is used .
[0019]
The kneaded product W is formed into a predetermined shape by a forming device disposed adjacent to the energization heating device shown in FIG. 2 and then supplied to the upstream portion of the lower first fixed electrode 11. The supplied kneaded product W is first transported toward the downstream side by the first water-permeable film 21 that moves along the current-carrying surface of the first fixed electrode 11. When transported for a predetermined distance, the kneaded product W is sandwiched between both water-permeable films 21 and 22 and transported downstream. In this state, when electric power is supplied from the power source 14 to both the fixed electrodes 11 and 12, a current flows through the kneaded product W, and Joule heat is generated in the kneaded product W.
[0020]
Since the kneaded product W is transported by the water permeable films 21 and 22 that move along both the fixed electrodes 11 and 12, the kneaded product W is transported by a transport device having a simple structure that transports only the water permeable films 21 and 22. It becomes possible to generate Joule heat while transporting.
[0021]
In this way, the kneaded product W first generates heat inside and is heated as a whole. In particular, the kneaded product W generates heat and the temperature rises on the downstream side of both the fixed electrodes 11 and 12. Therefore, the temperature is higher than that on the upstream side. When the temperature of the fixed electrodes 11 and 12 itself becomes higher, the temperature is also transmitted to the kneaded product W, and the temperature of the surface portion of the kneaded product W on the downstream side becomes higher than that on the upstream side, and the surface is sparked. May occur.
[0022]
Therefore, in order to cool the fixed electrodes 11 and 12, coolant passages 31 a and 31 b are formed in the fixed electrodes 11 and 12, and flow paths connecting the coolant tank 32 and the respective fixed electrodes 11 and 12. The coolant in the coolant tank 32 flows through the coolant passages 31a and 31b by the pump 34 provided in 33. By providing a cooler in the flow path 33 or the cooling liquid tank 32, the temperature of the cooling liquid entering the cooling liquid passages 31a and 31b may be kept constant, without circulating the cooling liquid, Tap water or the like may be supplied to the coolant passages 31a and 31b.
[0023]
When the fixed electrodes 11 and 12 are cooled in this way, the temperature rise of the surface portion of the kneaded product W is suppressed, and when the kneaded product W is energized and heated while being transported by both water permeable films 21 and 22, the kneaded product is Generation of a spark from the surface of W is prevented. Thereby, the kneaded product W will be heated uniformly uniformly, and generation | occurrence | production of a temperature nonuniformity will be prevented.
[0024]
A kneaded product that is made into a product without being fried in oil like a firewood is taken out from an electric heating device and then transferred to an electric furnace or gas furnace, where the surface is baked and then cooled and packed. It is commercialized after that.
[0025]
When producing a deep-fried kneaded product, the kneaded product W taken out from the energization heating device shown in FIG. 2 is conveyed to the first pot 41 as the first frying step 3 by oil as shown in FIG. Fried. In the first pot 41, the whole including the surface portion of the kneaded product is heated. Thereafter, the surface of the kneaded product W is mainly colored by the oil having a temperature higher than that of the first kettle 41 in the second kettle 42 as the second frying step 4 so that the kneaded product W is colored.
[0026]
As described above, when joule heating is performed in the energization heating device, the temperature is lowered by suppressing the temperature rise of the surface portion of the kneaded product W, so that the kneaded product is produced by the first kettle 41 and the second kettle 42. When frying W, the kneaded product W is prevented from expanding and causing a blistering phenomenon, and a high-quality kneaded product can be produced with a high yield.
[0027]
It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.
[0028]
For example, each of the water permeable films 21 and 22 is endless, but without being endless, the water permeable film is fed from a supply roll around which the water permeable film is wound, and is conveyed by being wound around a take-up roll. You may do it. In addition, the water is supplied to the water permeable film by spraying water from the spray nozzles 27a and 27b. However, the water permeable film may be supplied by being submerged in the water tank.
[0029]
In the above description, the invention made mainly by the present inventor shows the case where the present invention is applied to heat kneaded products such as salmon and fish cake made from fish meat, but is not limited to this, for example, The present invention can also be applied to heating a kneaded product made of meat or the like or a kneaded product made of cereal or the like.
[0030]
【The invention's effect】
According to the present invention, the electrode for supplying electric power to the kneaded product is used as a fixed electrode, and the kneaded product is conveyed by being sandwiched by the water-permeable film that moves along the surface thereof. Since the fixed electrode for energizing the kneaded product is cooled, generation of sparks from the surface portion of the kneaded product is prevented during energization, and the kneaded product can be heated to a uniform temperature as a whole. When the kneaded product is fried in oil, it is fried in oil in a state where the temperature rise of the surface portion is suppressed in the Joule heating step, and the occurrence of the blistering phenomenon of the kneaded product is prevented.
[Brief description of the drawings]
FIG. 1 is a flowchart showing a heating process of a kneaded product in manufacturing fried food as one embodiment of the present invention.
FIG. 2 is a cross-sectional view showing an energization heating device for heating a kneaded product by Joule heating.
FIG. 3 is a perspective view showing a lower first fixed electrode in FIG. 2;
FIG. 4 is a cross-sectional view showing a frying process in which a kneaded product is fried with oil.
[Explanation of symbols]
10a, 10b Support base 11 First fixed electrode 12 Second fixed electrode 14 Power source 21 First water-permeable film 22 Second water-permeable film 23a-26a Guide roller 23b-26b Guide roller 27a, 27b Spray nozzle 31a, 31b Coolant passage 32 Coolant tank 33 Channel 34 Pump 41 First hook 42 Second hook

Claims (3)

A kneaded product forming process for forming the kneaded product into a predetermined shape;
A first water-permeable film made of cloth that moves along the surface of a first fixed electrode made of a plurality of plates arranged on a support table, and a second fixed electrode made of a plurality of plates arranged on the support table The kneaded product is sandwiched between a second water-permeable film made of cloth that moves in synchronization with the first water-permeable film along the surface of the first, and the first fixed electrode is interposed between the first and second fixed electrodes. A step of transporting the first and second water-permeable films ;
While conveying the kneaded product, a current is passed from the first and second fixed electrodes to the kneaded product through the first and second water-permeable films, thereby generating Joule heat in the kneaded product and heating the kneaded product. And the process of
Under the state where Joule heat is generated in the kneaded product, water is supplied to each of the water permeable films and the first and second fixed electrodes are cooled by cooling the first and second fixed electrodes. A step of increasing the internal temperature by Joule heat while cooling the surface of the kneaded product through a film;
A method of heating a kneaded product, comprising: a frying step of frying the kneaded product after heating with Joule heat.   The heating method of the kneaded product according to claim 1, wherein the kneaded product after being heated by Joule heat is fried in oil to heat the whole kneaded product, and after fried in the first fried step A method for heating a kneaded product comprising: a second frying step for coloring the surface of the kneaded product with oil having a temperature higher than that of the oil in the first frying step. A first fixed electrode made of a plurality of metal plates disposed on a support base and having a current-carrying surface;
A second fixed electrode comprising a plurality of metal plates arranged on a support base and having a current-carrying surface opposed to the current-carrying surface with a gap substantially corresponding to the thickness of the kneaded product;
A first water-permeable film made of cloth that moves along the current-carrying surface of the first fixed electrode and conveys a kneaded product;
It moves along the current-carrying surface of the second fixed electrode, sandwiches the kneaded product together with the first water-permeable film, and between the first and second fixed electrodes by the first water-permeable film A second permeable film made of cloth to be conveyed;
Driving means for driving the first and second water-permeable films synchronously;
Cooling means for cooling the first and second fixed electrodes ;
A spray nozzle for supplying moisture to each of the water-permeable films ,
While the surface portion of the kneaded product is cooled by the first and second fixed electrodes, the inside of the kneaded product is heated by Joule heat, and the kneaded product is moved by the first and second water-permeable films . An apparatus for heating a kneaded product characterized in that it is conveyed between two fixed electrodes .

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