JPH06174346A - Ice containing sterilizing gas and method for manufacturing it - Google Patents

Abstract

PURPOSE:To cool foods in such a manner as that of ice, keep a degree of fresh ness at a certain level, enable the foods to sterilized in such a manner as that offered by ozone or active oxygen and further perform a sterilization process for a long period of time in a continuous manner and keep a certain degree of freshness of the foods. CONSTITUTION:In a process for performing a sterilization and keeping a certain degree of freshness of foods using sterilization gas, water containing ozone acting as sterilization gas or active oxygen resolved in it is changed by an ice making device into ice containing ozone or active oxygen in it. This processing method is carried out in such a way that water having ozone acting sterilization gas or active oxygen resolved in it is changed as by the ice making device into ice containing ozone or active oxygen therein.

Description

Detailed Description of the Invention

[0001]

The present invention relates to sterilization for fisheries, food production, milk distribution, chemistry, medicine, hotels and restaurants,
The present invention relates to ice containing a sterilizing gas used for deodorization and keeping freshness, and a method for producing the ice.

[0002]

2. Description of the Related Art Conventionally, an ozone sterilization method for foods and hygiene products using ozone as a sterilizing gas (Japanese Patent Laid-Open No. 64-39).
976), there is a method of using an aqueous solution containing iodide and diffusing ozone generated at a concentration of 1 to 25 mg / l.

Further, in the ozone sterilization method and its apparatus (Japanese Patent Laid-Open No. 1-137961), a gas containing ozone is circulated, and the granular material in the ozone sterilization chamber is fluidized with the gas to sterilize the granular material. There is a way to do it.

Further, in an ozone sterilizer using ozone gas (Japanese Patent Laid-Open No. 1-137962), powdered food to be sterilized is filled in the drum and rotated, and a sterilizing lamp and an ozone lamp are passed inside the drum. There is an ozone sterilizer that sterilizes the powdered food in the drum by passing the air stream.

[0005] As a result, there is oxidative disinfection) and preservation and restoration of fresh food freshness. (Magazine food worker Listed)

[0006]

Conventionally, ice has not been bactericidal and has been used for keeping foods by keeping foods fresh. In addition, ozone is a colorless gas which has a strong oxidizing power and is sterilized, deodorized and bleached. Although it has a strong effect on action, it decomposes quickly because it is an extremely unstable gas (about 30 minutes in water, half in 10 hours in the air), and it cannot be stored in a cylinder for a long time. When using, it had to be generated continuously and acted directly.

[0007] Since it cannot be done, it was necessary to generate it continuously and to directly act it when using it.

[0008] Therefore, according to the above-mentioned conventional technique, food or the like is kept in the air while generating ozone. It was dissolved in water and foods etc. were temporarily submerged in this dissolved water to sterilize and maintain freshness.

The present invention has been made in view of the above problems of the prior art. The object of the present invention is to cool foods or the like like conventional ice and to maintain freshness. Without, you can also sterilize food etc. at the same time,
Since ozone and activated oxygen decompose quickly and cannot be stored in a cylinder for a long time, when using this, it was necessary to continuously generate and directly act on ozone or activated oxygen. Live It is an object of the present invention to provide ice that can be sterilized and kept fresh for a long period of time (time until ice melts).

[0010]

In order to achieve the above object, the ice according to the present invention uses ozone (O ₃₎ as sterilizing gas in a method of sterilizing and maintaining freshness by using sterilizing gas. ) Is dissolved in water to form ice containing ozone (O ₃ ) in an ice making device.

Further, it is a manufacturing method in which water in which ozone (O ₃ ) is dissolved as a sterilizing gas is made into ice containing ozone (O ₃ ) in an ice making device.

Further, in the method of sterilizing and maintaining freshness by using sterilizing gas, ) Is included in the ice.

[0013]

[0014]

Now, the operation of the ice containing the sterilizing gas (ozone or activated oxygen) having the above-mentioned structure and the method for producing the same will be described. Now, the ice containing the sterilizing gas (ozone or activated oxygen) should be contained. Put ice in a container together with food such as seafood, vegetables, meat, and other fresh foods, lower the temperature of the food, and further disinfect gas (ozone or activated oxygen)
When ice containing ice melts, sterilizing gas (ozone or activated oxygen) in the ice is generated little by little, and sterilization and freshness preservation of food are continued for a long time (ice melts). It is possible to sterilize foods, etc. for a long time and preserve and keep them fresh for storage and transportation.

In addition to sterilization and freshness preservation, ozone also has deodorizing, bleaching, extinguishing, analgesic, detoxifying, and cell activating actions, so that it can deodorize foods, bleach, and restore freshness of vegetables.

In addition to the sterilization and freshness retention, the activated oxygen has a deodorizing effect, a freshness restoring effect and a cell activating effect, so that the freshness of vegetables can be restored.

It is possible to sterilize a part of the excised or cut human and animal bodies used for medical treatment and research in hospitals, cell activation and freshness retention, deodorization, storage and transportation.

Most of the demand (weight ratio) of ice in Japan is for fishing boats, storage and distribution of seafood, and most of the ice is ice cubes, and it is used in small pieces according to the application. It

On the other hand, although automatic ice making is used in fields other than fisheries, and its shape has various shapes such as plates, tubes, shells and flakes, the ice making device for carrying out the method of the present invention is an ice cube making device. It is roughly divided into automatic ice making equipment.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be illustratively described in detail below with reference to the drawings. However, unless otherwise specified, the constituent devices, constituent contents, constituent methods, relative arrangements, and the like described in this embodiment are not intended to limit the scope of the present invention thereto. ,
It is just an example of explanation. The ice containing the sterilizing gas and the method for producing the ice can be modified in various ways within the scope of the patent claims.

(Example 1) In Example 1, a method for producing ice cubes of ice containing ozone will be described with reference to FIG. 1. In the first step, the air blower (1) is compressed by an air compressor (compressor). The cooled air is cooled by a freezing dryer, and the cooled air is blown to the ozone generator (2) through a filter regulator.

In the second step, the blown air is ventilated between the two plate electrodes to which an alternating high voltage is applied in the ozone generator (2) to generate ozone (O ₃ ), which is discharged from the outlet.

Methods for artificially producing ozone include a chemical method, an electrolysis method, an ultraviolet ray method, and a silent discharge method. The silent discharge method includes a plate method (flat plate type) and a glass tube tube method (cylindrical type). In the practice of the present invention, the silent discharge plate method is usually used, but other methods may be used. In addition, the ozone generator (2) can freely adjust the ozone concentration with a dial (voltage regulator),
The operating time can also be set by a timer.

In the third step, water is supplied to the germicidal gas dissolving device (4) by the water supply device (3).

Water is usually tap water, but ground water, distilled water, ion-exchanged water, filtered water or the like can be used. Further, it is also one preferable embodiment to use an aqueous solution containing iodide (particularly potassium iodide). It is also possible to use an aqueous solution containing liquid nitrogen.

In the fourth step, the ozone discharged from the ozone generator (2) is released through pipes into the water which is supplied in a fixed amount into the dissolution water tank of the sterilizing gas dissolving device (4), and is diffused to a specified concentration. Dissolve so that

A ceramic air stone is provided at the bottom of the dissolving water tank, and an ozone pipe is attached to the ceramic air stone so that ozone is made into fine bubbles from the ceramic air stone and diffused into water to dissolve the ozone. Further, a stirring device may be provided in the dissolution water tank to diffuse ozone into water by stirring.

It should be noted that if the dissolved concentration of ozone is increased, the ozone concentration released into the atmosphere exceeds the regulated value and cannot be implemented as it is. Judgment material (AC
According to GIH, 1986-87), the permissible concentration in the ozone atmosphere is 0.1 ppm, so the concentration should be adjusted to be below the regulation value.

In addition, a gas phase ozone concentration meter is installed in the sterilizing dissolution apparatus (4), and the presence or absence of ozone release from water to the atmosphere during operation is monitored. When the concentration becomes high, it is equipped with a mechanism to notify by an alarm.

A liquid phase dissolved ozone meter is used to measure the dissolved concentration of ozone in water.

In the fifth step, ozone-dissolved water is put into the empty ice can (22), and the ozone gas discharge pipe branched from the ozone generator (2) is also put into the ice can.
An ice can is fixed to an iron can grid, and this is suspended by an ice-lifting crane, and immersed in a brine of a brine tank (17) at about -8 ° C to 12 ° C.

The brine is cooled by the cooling device (18), and the brine flows very slowly between the ice cans of the canister grid by the agitator to cool the ozone gas-dissolved water in the ice cans and the ozone gas-dissolved water in the ice cans. Is frozen near the brine.

As the brine, an aqueous solution of calcium chloride, ethylene glycol, sodium chloride or the like is used. And
The refrigerant of the cooling device (18) includes ammonia as an inorganic compound and R11, R12, R13, R as halogen carbon compounds.
21, R22, R113, R114, R5 of azeotropic mixture
00, R502 and the like are used, but other refrigerants may be used. (Use a refrigerant that replaces CFCs if CFCs currently in use are prohibited by law.)

In the sixth step, ozone is discharged from an ozone gas discharge pipe placed in an ice can immersed in brine.

In the seventh step, when the ozone-dissolved water in the ice can is frozen by about 90% to 98%, the release of ozone is stopped and the ozone gas release pipe is pulled out.

In the eighth step, after removing the ozone gas discharge pipe in the ice can, new ozone gas-dissolved water is added.

In the ninth step, the ice can is taken out of the brine tank (17) when the ozone-dissolved water in the ice can completely freezes after about 2 days (about 48 hours).

In the tenth step, the taken ice can is immersed in the ice melting tank (19). Since warm water is contained in the ice melting tank (19), the ice in the ice can is warmed and separated from the ice can.

In the eleventh step, the ice can is taken out from the ice melting tank (19).

In the twelfth step, the ice cans taken out from the ice melting tank (19) are placed on the deicing device (20).

In the thirteenth step, deicing is performed by the deicing device (20).

In the fourteenth step, the deiced ice is immediately put in an ice storage.

In the fifteenth step, the ice-breaking device (21) is used to make small pieces according to the intended use.

The deiced, empty ice cans (22) are filled again with ozone-dissolved water and the operation is repeated.

Further, without using the sterilizing gas dissolving device (4), an ozone gas discharge pipe is inserted into the water which is supplied directly to the empty ice can (22) in a fixed amount from the water supply device (3) to discharge ozone, Dispersing and dissolving to a specified concentration is also one preferable embodiment.

(Example 2) In Example 2, the plate type of the automatic ice making method of ozone containing ozone will be described with reference to Fig. 2. First, the ozone generator (1) is operated by the same blower (1) as in Example 1. The compressed air is blown to 2), and the ozone discharged from the ozone generator (2) is discharged through pipes into the water that has been quantitatively supplied to the dissolution water tank of the sterilizing gas dissolution device (4), and diffused to the specified concentration. Dissolve to become.

In the case of a plate type of ozone-dissolved water, the ozone-dissolved water is made to flow down from the upper part of the cooling plate (23) placed vertically, and the ozone-dissolved water is circulated until a certain thickness of ice is obtained. It is circulated in the device (24) to form ice.

The cooling plate (23) is cooled by the cooling device (18).

The ice formed on the cooling plate (23) is separated from the cooling plate (23) by hot gas or warm water (25) and dropped downward, crushed by the ice crusher (21) and stored in an ice storage. .

One cycle is repeated in about 30 minutes.

A tube type not shown, which is an automatic ice making method for ice containing ozone, will be described. The tube type is a cooling device from the outer surface of the tube in which ozone-dissolved water is made to flow down from inside into a tube having an inner diameter of about 50 mm. Cool in (18), grow an ice layer in a concentric circle, and after reaching a predetermined thickness, heat the outer surface of the tube with hot gas or warm water (25) as in the case of the plate type, and then cool the ice in the tube. Is dropped, crushed by an ice crusher (21), and stored in an ice storage.

The shell type, which is not shown, of the automatic ice making method of ozone containing ozone is explained. The shell type is basically the same as the plate type or the tube type, and ozone is attached to the outer surface of the vertically placed tube. Dissolved water is allowed to flow down to grow an ice layer, hot gas is put inside the tube to remove ice, and shell-shaped ice is obtained from the ice crusher and stored in an ice storage.

(Example 3) In Example 3, an explanation will be given of the flake type of the automatic ice making method of ice containing ozone with reference to Fig. 3, in which the same ozone-dissolved water as in Examples 1 and 2 is cooled by a cylinder (26). ), Ozone-dissolved water is caused to flow on the surface of the cylinder, and one of the surfaces from the inside or the outside of the cylinder is cooled by a cooling device (18) to freeze it to a thickness of about 0.5 mm to 3 mm.
This is scraped by a scraping device (27) to make flaky ice and stored in an ice storage.

The cooling cylinder (26) may rotate and the scraping device (27) may rotate (in this case, the inside of the cooling cylinder is frozen).

Example 4 In Example 4, a method for producing ice cubes of ice containing activated oxygen will be described with reference to FIG. 4. In Example 1, ozone was used, but in Example 4, activated oxygen was used. The rest is almost the same as that of the first embodiment except that it is used. Therefore, the description of the same parts as those of the first embodiment will be omitted.

In the first step, the air compressed by the blower (1) is blown to the activated oxygen generator (29).

In the second step, the blast air is ventilated through the activated oxygen generator (29) to activate the activated oxygen.

[0058] Regarding the method of producing oxygen (O ₂ ) in the air, nitrogen (N) is about 79%, oxygen (O ₂ ) is about 20%, and nitrogen (N ₂ ) is the component in the air. ) And oxygen (O ₂ ) have considerably different atomic sizes (large nitrogen), so that only the oxygen can be selected and reacted by selecting the resonance frequency.

[0059] One of each of + O and-of O is combined with cooperation and stable in the ± zero state, and cannot be easily decomposed.

As a method of decomposing this, there is a catalytic decomposition method, but regeneration of the catalyst is troublesome, and there are also thermal decomposition method and resonance decomposition method, but decomposition efficiency is not good but safety and energy saving, long-term The resonance decomposition method is used in terms of stability.

[0061] By resonating the element (O ₂ ), oxygen atoms are liberated, polymerized and bonded, and ozone (O ₃ ) is generated. At that time, a plasma (strong electric field) reaction is applied to activate the activated acid. As an example, the product name (Biomate) of Tohoku Air Conditioning Management Co., Ltd. is used.

In the third step, water is supplied to the germicidal gas dissolving device by the water supply device (3).

In the fourth step, the activated oxygen generator (2
The activated oxygen discharged from 9) is released through pipes into the water that is supplied in a fixed amount into the dissolution water tank of the sterilizing gas dissolving device (4), diffuses and dissolves to a specified concentration.

In the fifth step, the activated oxygen-dissolved water is put into the empty ice can (22), and the activated oxygen gas release pipe branched from the activated oxygen generator (29) is also put into the ice can. And soak it in the brine in the brine tank (17).

In the sixth step, activated oxygen is released from an activated oxygen gas release tube placed in an ice can immersed in brine.

In the seventh step, when the activated oxygen-dissolved water in the ice can freezes by about 90 to 98%, the release of the activated oxygen is stopped and the activated oxygen release pipe is pulled out.

In the eighth step, after removing the activated oxygen release pipe in the ice can, new activated oxygen-dissolved water is added.

In the ninth step, when the activated oxygen-dissolved water is completely frozen, the ice can is taken out from the brine tank (17).

In the tenth step, the taken ice can is immersed in the ice melting tank (19).

In the eleventh step, the ice can is taken out from the ice melting tank (19).

In the twelfth step, the ice cans taken out from the ice melting tank (19) are placed on the deicing device (20).

In the thirteenth step, deicing is performed by the deicing device (20).

In the fourteenth step, the deiced ice is immediately put in the ice storage.

In the fifteenth step, the ice-crushing device (21) is used to make small pieces according to the intended use.

(Example 5) In Example 5, a plate type of an automatic ice making method of ice containing activated oxygen will be described with reference to Fig. 5. First, the air blower (1) similar to Example 4 was used for activation. Blowing compressed air to the oxygen generator (29),
The activated oxygen discharged from the activated oxygen generating device (29) is released through pipes into the water that is supplied in a fixed amount into the dissolution water tank of the sterilizing gas dissolving device (4), diffuses and dissolves to a specified concentration. .

When the activated oxygen-dissolved water is a plate type, the activated oxygen-dissolved water is made to flow down from the upper part of the cooling plate (23) placed vertically, and activated until a certain thickness of ice is obtained. The oxygen-dissolved water is circulated by the circulation device (24) to freeze the water.

The cooling plate (23) is cooled by the cooling device (18).

In the cooling plate (23), the frozen ice is separated from the cooling plate (23) by hot gas or warm water (25) and dropped downward, crushed by the ice crusher (21) and stored in the ice storage.

A tube type not shown, which is an automatic ice making method of ice containing activated oxygen, will be described. The tube type is a tube having an inner diameter of about 50 mm, in which activated oxygen-dissolved water is caused to flow down from the upper portion of the tube. Cooling device (1
Cool in 8), grow ice layer concentrically, and after reaching a predetermined thickness, heat the outer surface of the tube with hot gas or warm water (25) as in the case of the plate type, It is dropped, crushed by an ice crusher (21), and stored in an ice storage.

The shell type for automatic ice making containing activated oxygen (not shown) will be described. The shell type is the same as the plate type or the tube type in principle, and the shell type is placed on the outer surface of the tube placed vertically. Activated oxygen-dissolved water is caused to flow down to grow an ice layer, hot gas is put into the tube to remove ice, and shell-shaped ice is obtained from the ice breaking device and stored in an ice storage.

(Example 6) In Example 6, a flake type of the automatic ice making method of ice containing activated oxygen will be described with reference to FIG. 6, and activated oxygen-dissolved water similar to those in Examples 4 and 5 was used. Flowing activated oxygen-dissolved water on the surface of the cooling cylinder (26),
Either the inner surface or the outer surface of the cylinder is cooled by a cooling device (18) to be frozen to a thickness of about 0.5 mm to 3 mm, and this is scraped by a scraping device (27) to form flakes. Make ice and store in ice storage.

[0082]

Since the present invention is configured as described above, it has the following effects.

Ice has no bactericidal property.
I used it only to maintain freshness, Since it can not be stored for a long time in a container, etc., when using it, generate it continuously, By using it without ice, put it in a container together with foods such as seafood, vegetables, meats, and other fresh foods to lower the temperature of foods, and then add ozone (O ₃ ) or Since it is kept for a long time continuously (time until the ice melts), it is possible to sterilize foods, deodorize them and keep them fresh for storage and transportation. Therefore, the value of food etc. is increased.

In addition to sterilization, deodorization and freshness preservation, ice containing ozone also has bleaching, analgesic, detoxification and cell activating actions, so that bleaching of foods (especially small fish used for boiling and drying) Soaked in ice water containing ozone and processed to make bleached dried sardines, which enhances the added value of dried sardines.) .

Further, ice containing activated oxygen has a sterilizing, deodorizing and freshness-retaining action as well as a freshness-recovering action and a cell-activating action. Increase.

It should be noted that ice containing ozone or activated oxygen is used for medical treatment and research in hospitals and the like, sterilization, cell activation action, freshness retention and deodorization of a part of the excised or cut human body and animal body, Since it can be stored and transported, it can contribute to transplant surgery and the like.

In a factory for fresh foods and the like, it is necessary to install sterilization equipment (heat treatment, ultraviolet ray treatment, sterilizing gas treatment) and the like, which is a great burden in terms of cost, but ozone (O ₃ )
Or The cost will be cheaper.

[0088]

[Brief description of drawings]

FIG. 1 is a block diagram of a method for producing ice cubes of ice containing ozone as a sterilizing gas.

FIG. 2 is a plate-type block diagram of an automatic ice making method of ice containing ozone as a sterilizing gas.

FIG. 3 is a flake type block diagram of an automatic ice making method of ice containing ozone as a sterilizing gas.

FIG. 4 is a block diagram of a method for producing ice cubes of ice containing activated oxygen as a sterilizing gas.

FIG. 5 is a plate type block diagram of an automatic ice making method of ice containing activated oxygen as a sterilizing gas.

FIG. 6 is a flake block diagram of an automatic ice making method for ice containing activated oxygen as a sterilizing gas.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Blower 2 ... Ozone generator 3 ... Water supply device 4 ... Sterilizing gas dissolving device 17 ... Brine tank 18 ... Cooling device 19 ... Ice melting tank 20 ... Deicing device 21 ·· Ice breaker 22 · · Ice can (empty) 23 · · Cooling plate 24 · · Circulating device 25 · · Hot gas or hot water 26 · · Cooling cylinder 27 · · Scraping device 29 · · Activated oxygen generator

Claims (3)

[Claims] 1. A method of sterilizing and maintaining freshness by using sterilizing gas, wherein water in which ozone (O ₃ ) is dissolved as sterilizing gas is made into ice by an ice making device. Ice containing germicidal gas. 2. The method for producing ice containing sterilizing gas according to claim 1, wherein water in which ozone (O ₃ ) is dissolved as sterilizing gas is made into ice by an ice making device. 3. A method of sterilizing and maintaining freshness using a sterilizing gas. Ice containing sterilizing gas, which is characterized by the fact. The method for producing ice containing sterilizing gas according to claim 3, wherein the ice is made by an ice device.