JPH10276744A - Device for applying high-voltage feeble current to food material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for applying a high-voltage feeble current to a food material, capable of preserving it for an extended period by preventing it from being deteriorated or decayed. SOLUTION: This device continuously applies a high-voltage feeble current to a food material, wherein the current is obtained by blocking one end of a secondary coil 6 in a transformer 3 which increases voltage of AC current of commercial frequency, and is directed onto the food material via a current- carrying plate. When the current is continuously applied to, e.g. an edible oil for frying, it is prevented from being deteriorated and can be used for an extended period. The device can be provided in a food container to apply the current to a raw food material therein, e.g. fish or meat, in order to prevent growth of miscellaneous bacteria and thereby deterioration or decay of the food material for an extended period, particularly efficiently when the food material is kept cool in a refrigerator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-voltage weak current applying device for foodstuffs.

[0002]

2. Description of the Related Art For the long-term preservation of edible frying oil and the reduction of waste oil discharge, a high-voltage weak current is applied to the edible frying oil, and a high-voltage weak current is applied to foods to suppress deterioration and deterioration. Does not exist.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a high-voltage weak current applying apparatus for food which suppresses deterioration and deterioration of the food and enables long-term storage. And

[0004]

According to the present invention, there is provided a high-voltage weak current applying apparatus for foodstuff according to the present invention, wherein an AC power source having a commercial frequency is connected to a primary side, and a secondary side is closed at one pole. A high-voltage weak current obtained from the vessel is guided to a current-carrying plate insulated from the installation object, and is applied from the current-carrying plate to foodstuffs placed in the installation object.

[0005]

Operation and effect of the present invention A high-voltage weak current obtained by closing the secondary side of a transformer for boosting an AC power supply having a commercial frequency by one pole is constantly applied to foodstuffs from a current-carrying plate. When a high-voltage weak current by the device of the present invention was constantly applied to edible frying oil, deterioration of the edible frying oil was suppressed and long-term use was made possible. Further, when the apparatus of the present invention is installed in a food container, the food container is placed in a refrigerator, and a high voltage weak current is continuously applied to the food such as tuna and raw beef in the food container, thereby suppressing the propagation of various bacteria. No deterioration and deterioration occurred for a long time.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) FIG. 1 is a schematic electric circuit diagram of a high-voltage weak current generator 1. PVC casing 2
Inside, a transformer 3 is installed. The core 4, the primary winding 5, and the secondary winding 6 of the transformer 3 are made of epoxy resin 7
Inserted inside. The terminals 5a of the primary winding 5,
5b is connected to a commercial frequency AC power supply of 100 V via a no-fuse breaker 8 and a choke transformer 9. 10 is a pilot lamp. Between the secondary windings 6 is short-circuited by a short-circuit wire 12 having a resistor 11 interposed therebetween to perform a single pole block. Thereby, the terminal 6a has 5
A high voltage weak current of about 10 kV to 10 kV and 10 mA to 100 mA is generated.

FIG. 2 is a schematic electric circuit diagram of the variable output type high voltage weak current generator 21. As shown in FIG. The high voltage weak current generator 21 is connected to the terminals 5 a and 5 of the primary winding 5 of the transformer 3.
The voltage of the commercial frequency AC power supply connected to b is adjusted by a variable device (slidac) 22 so that the output can be varied. Then, the control circuit 23 controls the high voltage relay 24 to switch the switch 25,
A high voltage weak current generated at the terminal 6a can be automatically supplied.

FIG. 3 is a cross-sectional view of a fryer 31 for applying the high-voltage weak current to edible frying oil.
A plurality of heating pipes 33 extend in parallel in the frying oil tank 32 of the fryer 31. As shown in FIG. 4, an insulating frame 34 made of a rectangular ceramic material is disposed above the heating pipe 33. A conductive plate 36 formed by punching a large number of circular holes 35 is installed in the insulating frame 34, and the upper surface thereof is covered by a Teflon insulating plate 38 formed by punching a large number of rectangular holes 37. The conductive plate 36 and the terminal 6a of the high-voltage weak current generator 1 or 21 are connected by a wire harness 39 provided with a flexible insulating coating. A repeater 40 and an intermediate controller 41 are connected to the wire harness 39 in series. The connection of the wire harness 39 is performed by a plug and a jack of a liquid tight specification. still,
The high-voltage weak current discharged from the current-carrying plate 36 into the frying oil has poor progression, and its reach (electric field formation region) is 10
It is about 200 mm at 10 mA at kV.

Table 1 shows the results of a test in which a high-voltage weak current was applied to the frying oil in the frying oil tank 32 with the above-described structure, and the acid value, peroxide value and carbonyl value changed over time. The test method was based on a standard fat and oil analysis test method (carbonyl value: absorbance per 1 g of sample). The test and inspection specifications are as follows. (1) Test oil and fat: soybean salad oil 27 liters / 24.3
kg (2) Fryer: 30 liters intermediate heating direct fire table fryer (3) Applied voltage 10 kV, current 100 mA (4) Surface area: 1,760 cm ² (5) Temperature: 150 ± 2 ° C (6) Water spray amount: 2 hours 300 cc (6.2 g of water /
(Oil kg / Hr) (7) Air contact area: 72 cm ² / oil kg

[0010]

[Table 1] Incidentally, the value of the acid value, which is the reference for changing the frying oil, is 2.0.

By constantly applying a high voltage weak current as described above, it is possible to suppress an increase in the values of acid value, peracid value and cannibonyl value, which indicate deterioration of the frying oil, for a long time. Therefore, since the frying oil can be used for a long time, it is possible to effectively contribute to reduction of the amount of waste oil and improvement of the working environment. In addition, it is possible to cope with a long conveyor-type frying oil tank by arranging a high-voltage weak current applying device for the fryer in the longitudinal direction.

(Second Embodiment) FIG. 5 is a sectional view of a food storage container 51 according to the present invention. This food storage container 51
Is formed by forming insulating materials 54 and 55 made of vinyl chloride on the inner surfaces of the container body 52 and the lid 53 in a lining shape, and further lining conductive materials 56 and 57 such as aluminum foil inside the insulating materials 54 and 55. It is. Then, a spring-like conducting member 58 is provided so that the conducting member 56 of the lid 53 can conduct electricity from the conducting member 56 of the container 52 when the cover is closed. Container 52
A power supply jack 59 is provided on the side surface of.
By depositing aluminum on a synthetic resin plate, an insulating material and a current-carrying material can be integrally formed. Further, the container 52 and the lid 53 may be made of synthetic resin, cardboard or wood.

In this food storage container 51, a plug 59 at the end of the wire harness 39 is connected to a jack 59,
High voltage weak current generator 1 described above for foodstuffs stored inside
Alternatively, a high-voltage weak current generated from 21 is always applied and used in a refrigerator.

Table 2 shows the number of general viable bacteria of various foods when stored in the food storage container 51 and stored in the refrigerator (a) and when stored directly in the refrigerator (b) (using an ordinary agar medium).
Are compared with each other over time. The applied voltage is 1
0 kV and the current was 100 mA. The asterisks (*) indicate those that have been disposed of by corruption.

[0015]

[Table 2] As is clear from the above results, the effect of inhibiting the growth of various bacteria is remarkable in the case of storing in the foodstuff storage container 51 of the present invention and storing in the refrigerator (a) as compared with the case of storing directly in the refrigerator (b). Deterioration and deterioration do not occur, and food can be stored for a long time.
In the above description, the frequency of the high voltage weak current is 25 to 35.
By lowering the frequency to Hz, a more remarkable germ growth inhibiting effect was produced.

[Brief description of the drawings]

FIG. 1 is a schematic electric circuit diagram of a high-voltage weak current generator 1. FIG.

FIG. 2 is a schematic electric circuit diagram of a variable output high-voltage weak current generator 21;

FIG. 3 is a sectional view of a fryer 31 configured to apply the high voltage weak current to edible frying oil.

FIG. 4 is a perspective view of an insulating frame 34, a conductive plate 36, an insulating plate 38, and the like.

FIG. 5 is a sectional view of a food storage container 51.

[Explanation of symbols]

 1,21 ... High voltage weak current generator 5 ... Primary winding 6 ... Secondary winding 12 ... Short wire 23 ... Control circuit 31 ... Flyer 34 ... Insulating frame 36 ... Electric plate 38 ... Insulating plate 39 ... Wire harness 51 ... Food storage container 54,55 ... Insulating material 56,57 ... Electrifying material 58 ... Electrifying tool

Claims (1)

[Claims] An AC power source of a commercial frequency is connected to a primary side, and a high-voltage weak current obtained from a transformer having a secondary side closed at one pole is led to a current-carrying plate insulated from an installation object. A high-voltage weak current applying device for food, wherein the device is applied from a current-carrying plate to food placed in the installation object.